EX-99.1 5 d286478dex991.htm REPORT DATED FEBRUARY 15, 2012

Exhibit 99.1

TAX INFORMATION

2011

This booklet contains tax information relevant to ownership of

Units of Sabine Royalty Trust and should be retained.

(This page intentionally left blank.)

SABINE ROYALTY TRUST

February 15, 2012

To Unit Holders:

This booklet provides 2011 tax information, which will allow you to determine your pro rata share of income and deductions attributable to your investment in Sabine Royalty Trust (the “Trust”). Each Unit holder is encouraged to read the entire booklet very carefully.

The material included in this booklet enables you to compute the information to be included in your federal and state income tax returns, and the items of income, deduction, and any other information shown in this booklet must be taken into account in computing your taxable income and credits on your federal income tax return and any state tax returns. This booklet, as well as any Forms 1099-MISC received from the Trust relating to backup withholding (discussed on page 3) and any IRS Forms 1099 and written tax statements issued by certain middlemen (discussed in more detail on pg. A-1) that hold Trust Units on your behalf, are the only information sources for Unit holders to determine their share of the items of income and expense of the Trust for the entire 2011 calendar year. Unit holders should retain this booklet and any Forms 1099 and written tax statements received from middlemen and any Forms 1099-MISC received from the Trust as part of their tax records.

The material herein is not intended and should not be construed as professional tax or legal advice. Each Unit holder should consult the Unit holder’s own tax advisor regarding all tax compliance matters relating to the Units.

To ensure compliance with Treasury Department Circular 230, Unit holders are hereby notified that any discussion of U.S. federal income tax issues in this booklet is not intended or written to be relied upon, and cannot be relied upon, by Unit holders for the purpose of avoiding penalties that may be imposed on such Unit holders under the Internal Revenue Code of 1986.

For your convenience, simple revenue/expense and cost depletion calculators are now available on the Sabine Royalty Trust website at: www.sbr-sabineroyalty.com, on both the “Home” page and “Tax Information” page.

Very truly yours,

Sabine Royalty Trust,

By U.S. Trust, Bank of America Private Wealth Management, Trustee

1-800-365-6541

901 Main St. 17th Floor,

Dallas, TX 75202

EIN 75-6297143

CUSIP 78568810

SABINE ROYALTY TRUST

TABLE OF CONTENTS

|  | Page |
2011 TAX INFORMATION |  |  |  |
• Reading the Income and Expense Schedules |  |  | 1 |
• Identifying Which Income and Expense Schedules to Use |  |  | 1 |
• Applying the Data From the Income and Expense Schedules |  |  | 1 |
• Computing Depletion |  |  | 2 |
• Asset Sales and Dispositions |  |  | 3 |
• Redemptions |  |  | 3 |
• Sale or Exchange of Units |  |  | 3 |
• Classification of Investment |  |  | 3 |
• Nonresident Foreign Unit Holders |  |  | 3 |
• Unrelated Business Taxable Income |  |  | 3 |
• Backup Withholding |  |  | 3 |
• State Tax |  |  | 4 |
• Table of 2011 Monthly Record Dates and Cash Distributions Per Unit |  |  | 4 |
• Tax Information Schedules |  |  | 5 |
• • Form 1041, Grantor Trust for Calendar Year 2011 |  |  | 5 |
• • Supplemental Tax Table I—Gross Royalty Income Federal |  |  | 6 |
• • Supplemental Tax Table II—Severance Tax Federal |  |  | 6 |
• • Supplemental Tax Table III—Interest Income Federal |  |  | 7 |
• • Supplemental Tax Table IV—Trust Administrative Expense Federal |  |  | 7 |
• • Supplemental Tax Tables A through D Texas |  |  | 8 |
• • Supplemental Tax Tables A through C Oklahoma |  |  | 9 |
• • Supplemental Tax Tables A through C Florida |  |  | 10 |
• • Supplemental Tax Tables A through C Louisiana |  |  | 11 |
• • Supplemental Tax Tables A through C Mississippi |  |  | 12 |
• • Supplemental Tax Tables A through C New Mexico |  |  | 13 |
• • Depletion Schedule D-I |  |  | 14 |
• • Depletion Schedule D-II |  |  | 14 |
• • Depletion Schedule D-III |  |  | 15 |
• • Depletion Schedule D-IV |  |  | 16 |
• Sample Tax Forms for Individual Unit Holders |  |  | 17 |
• Tax Computation Worksheets |  |  | 21 |
• Comprehensive Examples |  |  | 22 |
• Sabine Royalty Trust Historical Tax Worksheet |  |  | 25 |
DISCUSSION OF TAX CONSIDERATIONS PERTAINING TO THE OWNERSHIP OF UNITS IN SABINE ROYALTY TRUST |  |  |  |
• Tax Background and WHFIT Information |  |  | A-1 |
• • Effect of Escrow Arrangement |  |  | A-2 |
• Depletion |  |  | A-2 |
• • Cost Depletion |  |  | A-2 |
• • Percentage Depletion |  |  | A-3 |
• Adjustment to Basis |  |  | A-3 |
• Non-Passive Activity Income, Credits and Loss |  |  | A-3 |
• Revenue/Expense and Depletion Calculators |  |  | A-3 |
• Nonresident Foreign Unit Holders |  |  | A-3 |
• Sale or Exchange of Units |  |  | A-4 |
• Backup Withholding |  |  | A-5 |
• State Tax |  |  | A-5 |
• List of states’ contact information |  |  | A-7 |
(SRT 2011 TAX) |  |  |  |

SABINE ROYALTY TRUST

2011 TAX INFORMATION

Reading the Income and Expense Schedules

The accompanying income and expense schedule and tables reflect tax information attributable to Sabine Royalty Trust (the “Trust”) for 2011. This information has been assembled on a per Unit basis and is expressed in decimal fractions of one dollar. A cumulative schedule for the twelve months ended December 31, 2011 and separate cumulative tables at the federal level as well as tables for each of the states in which the Trust has properties are included. Separate depletion schedules are enclosed that provide the necessary information for Unit holders to compute cost and percentage depletion with respect to their interests in the Trust.

Identifying Which Income and Expense Schedules to Use

Pursuant to the terms of the Trust agreement and the escrow agreement, the Trust receives income and incurs expenses only on Monthly Record Dates. Furthermore, only Unit holders of record on Monthly Record Dates are entitled to cash distributions. On the basis of these agreements, both cash and accrual basis Unit holders should be considered as realizing income and incurring expenses only on Monthly Record Dates. Therefore, if you were not the Unit holder of record on a specified Monthly Record Date, you should not use the tax information for the month in which that Monthly Record Date falls. A table of Monthly Record Dates and cash distributions per Unit is included on page 4.

The appropriate schedules to be used by a Unit holder will depend upon (i) the date the Unit holder became a holder of record of the Units, (ii) if applicable, the date the Unit holder ceased to be the holder of record of the Units, and (iii) the tax year-end of the Unit holder. For instance, a Unit holder reporting on the calendar year basis who acquired Units and became a Unit holder of record on June 15, 2011 and who still owned only those Units on December 15, 2011 must use the federal and individual state, where applicable, tables to determine their proportionate income and expenses (located on pages 6-13), and Depletion Schedules D-I and D-II or Depletion Schedule D-IV, as appropriate (located on pages 14 and 16, respectively) for such Units. However, Unit holders reporting on a calendar year basis who became Unit holders of record prior to January 18, 2011 and who continued to own only those Units on December 15, 2011, can use either the cumulative schedule for calendar year 2011 (located on page 5) or the tables (located on pages 6-13) and Depletion Schedule D-III (located on page 15) or Depletion Schedule D-IV (located on page 16), as appropriate. As discussed in more detail herein, Unit holders may be entitled to a deduction for either cost depletion or percentage depletion (but not both), depending upon each Unit holder’s individual facts relating to the ownership of Trust Units.

Applying the Data From the Income and Expense Schedules

Unit holders who must use the separate income and expense tables should read the tables in the following manner: the months on the left-hand side of each table denote the month in which a Unit holder first became a Unit holder of record in 2011. Reading across from that month, choose the last month in 2011 in which the Unit holder was a holder of record with respect to those Units. Multiply that factor by the number of Units held for that specific period of time. For example, if Units were purchased on May 1, 2011 and held until December 31, 2011, a Unit holder would choose May from the left-hand side of the table and then choose the factor located under “December” from that row. For a worksheet approach to computing a Unit holder’s income and expense amounts, see the Tax Computation Worksheet on page 21.

(SRT 2011 TAX)

1

Computing Depletion

Depletion schedules are included that provide information for Unit holders to compute cost depletion and percentage depletion deductions with respect to their interests in the Trust. To compute cost depletion for any taxable period, Unit holders should multiply the cost depletion factor indicated on the relevant schedule times their original tax basis in the respective Unit(s) as reduced by the cost depletion and percentage depletion that was allowable as a deduction (whether or not deducted) in prior calendar years during which they owned the Units.

For your convenience, a simple cost depletion calculator is now available on the Sabine Royalty Trust website at: www.sbr-sabineroyalty.com, on both the “Home” page and “Tax Information” page.

A factor for percentage depletion is also included on Depletion Schedule D-IV. A Unit holder may be entitled to a percentage depletion deduction, in lieu of a cost depletion deduction, if percentage depletion exceeds cost depletion for any taxable period. To compute percentage depletion for any taxable period, Unit holders should multiply the appropriate percentage depletion factor indicated on Depletion Schedule D-IV by the number of Units owned by such Unit holder. Unlike cost depletion, percentage depletion is not limited to a Unit holder’s depletable tax basis in the Units. Rather, a Unit holder is entitled to a percentage depletion deduction as long as the applicable Trust properties generate gross income.

As discussed at page A-2 in the back portion of this booklet, the composite cost depletion factors are determined on the basis of a weighted average ratio of current production from each Trust property to the estimated future production from such property. This method of weighting the cost depletion factors permits the presentation of a single cost depletion factor for all Unit holders acquiring Units during a period in which there is no substantial change in the relative fair market values of the Trust properties. Primarily as a result of the decline in oil prices that occurred during 1986, there was a change in the relative fair market values of the Trust properties. Accordingly, two mutually exclusive cost depletion computations are included herein reflecting the composite cost depletion factors required to compute cost depletion for Units acquired in 1986.

The proper cost depletion schedule to use in computing 2011 cost depletion depends on the date when the Units were acquired, as described below. Therefore, Unit holders are encouraged to maintain records indicating the date of acquisition and the acquisition price for each Unit or lot of Units acquired.

Unit holders taking a cost depletion deduction who acquired Units before 2011 use Depletion Schedule D-III (located on page 15). The federal cost depletion factors in Depletion Schedule D-III are presented on a cumulative basis for 2011. Depletion Schedule D-III contains no state-specific cost depletion factors. Unit holders should refer to Depletion Schedule D-II (located on page 14) for the state-specific cost depletion factors.

Unit holders who acquired Units in 2011 use Depletion Schedule D-I (located on page 14). The federal cost depletion factors in Depletion Schedule D-I are presented on a cumulative and noncumulative basis for 2011. Depletion Schedule D-I contains no state-specific cost depletion factors. Unit holders should refer to Depletion Schedule D-II (located on page 14) for the state-specific cost depletion factors.

Depletion Schedule D-II (located on page 14) contains state-specific cost depletion factors, which are presented on a noncumulative basis for all years. These factors are appropriate for use in calculating the 2011 cost depletion allowance for Units purchased in all years. You may calculate state cost depletion by either (a) calculating the amount of state depletion for each month and adding together the monthly depletion amounts or (b) adding together the applicable monthly depletion factors for the

(SRT 2011 TAX)

2

relevant state to create a composite depletion factor for such state and, in both cases, multiplying that factor by the adjusted basis of your Units. Both methods should produce the same result.

Asset Sales and Dispositions

There have been no sales or dispositions of Trust assets during the year.

Redemptions

There have been no redemptions of Trust interests during the year.

Sale or Exchange of Units

A discussion concerning the tax consequences associated with the sale or exchange of Units is presented on page A-4 in the back portion of this booklet.

Classification of Investment

Tax reform measures enacted in 1986 and 1987 require items of income and expense to be categorized as “passive,” “active” or “portfolio” in nature. An explanation of how these rules apply to the items of income and expense reported by the Trust is on page A-1 in the back portion of this booklet.

Nonresident Foreign Unit Holders

Nonresident alien individual and foreign corporation Unit holders (“Foreign Taxpayer(s)”) are subject to special tax rules with respect to their investments in the Trust. These rules are outlined on page A-3 in the back portion of this booklet.

Unrelated Business Taxable Income

Certain organizations that are generally exempt from federal income tax under Internal Revenue Code Section 501 are subject to federal income tax on certain types of business income defined in Section 512 as unrelated business taxable income (“UBTI”). The income of the Trust as to any tax-exempt organization should not be UBTI so long as the Trust Units are not “debt-financed property” within the meaning of Section 514(b) of the Internal Revenue Code. In general, a Trust Unit would be debt-financed if the Trust incurs debt or if the tax-exempt organization that is a Trust Unit holder incurs debt to acquire a Trust Unit or otherwise incurs or maintains a debt that would not have been incurred or maintained if the Trust Unit had not been acquired. A real property exception applies to the debt-financed property rules for certain types of exempt organizations. Consult your tax advisor if applicable.

Backup Withholding

Unit holders, other than Foreign Taxpayers, who have had amounts withheld in 2011 pursuant to the federal backup withholding provisions should have received a Form 1099-MISC from the Trust. The Form 1099-MISC reflects the total federal income tax withheld from distributions. Unlike other Forms 1099 that you may receive, the amount reported on the Form 1099-MISC received from the Trust should not be included as additional income in computing taxable income, as such amount is already included in the per Unit income items on the income and expense schedules included herein. The federal income tax withheld, as reported on the Form 1099-MISC, should be considered as a credit by the Unit holder in computing any federal income tax liability. Individual Unit holders should include the amount of backup withholding in the Payment section of the Unit holder’s 2011 Form 1040. For a further discussion of backup withholding, see page A-5 in the back portion of this booklet. For amounts withheld from Foreign Taxpayers, see page A-3 in the back portion of this booklet.

(SRT 2011 TAX)

3

State Tax

Because the Trust holds royalty interests and receives income that is attributable to properties located in various states, Unit holders may be obligated to file a return and may have a tax liability in those states in addition to their state of residence. The accompanying tables have been prepared in such a manner that income and deductions attributable to the various states may be determined by each Unit holder. State tax matters are more fully discussed on page A-5 in the back portion of this booklet.

Table of 2011 Monthly Record Dates and Cash Distributions Per Unit

Unit holders, as reflected in the transfer books of the Trust on a Monthly Record Date, received the following per Unit cash distributions for 2011. The per Unit cash distributions reflected below have not been reduced by any taxes that may have been withheld from distributions to Foreign Taxpayers or from distributions to Unit holders subject to the federal backup withholding rules. The distribution checks were dated and mailed on the corresponding Date Payable.

Monthly Record Date |  | Date Payable |  | Distribution Per Unit
January 18, 2011 |  | January 31, 2011 |  | 0.31296
February 15, 2011 |  | February 28, 2011 |  | 0.26797
March 15, 2011 |  | March 29, 2011 |  | 0.20103
April 15, 2011 |  | April 29, 2011 |  | 0.43461
May 16, 2011 |  | May 31, 2011 |  | 0.34503
June 15, 2011 |  | June 29, 2011 |  | 0.32191
July 15, 2011 |  | July 29, 2011 |  | 0.40925
August 15, 2011 |  | August 29, 2011 |  | 0.40115
September 15, 2011 |  | September 29, 2011 |  | 0.39187
October 17, 2011 |  | October 31, 2011 |  | 0.35272
November 15, 2011 |  | November 29, 2011 |  | 0.22847
December 15, 2011 |  | December 29, 2011 |  | 0.29920

(SRT 2011 TAX)

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Cumulative 2011

SABINE ROYALTY TRUST

EIN 75-6297143

FORM 1041, GRANTOR TRUST

Federal and State Income Tax Information

See Instructions for Use

SECTION I

INCOME AND EXPENSE PER UNIT

|  | ROYALTY INCOME AND EXPENSE |  |  | OTHER INCOME AND EXPENSE |
Source |  | Gross Income |  |  | Severance Tax |  |  | Net Royalty Payments |  |  | Interest Income |  |  | Administrative Expense |
Florida |  | $ | .006574 |  |  | $ | 0.000351 |  |  | $ | .006223 |  |  | $ | * |  |  | $ | .000200 |
Louisiana |  |  | .089734 |  |  |  | 0.007584 |  |  |  | .082150 |  |  |  | * |  |  |  | .002868 |
Mississippi |  |  | .142755 |  |  |  | 0.009076 |  |  |  | .133679 |  |  |  | * |  |  |  | .004615 |
New Mexico |  |  | .316689 |  |  |  | 0.047040 |  |  |  | .269649 |  |  |  | * |  |  |  | .010217 |
Oklahoma |  |  | .609875 |  |  |  | 0.067665 |  |  |  | .542210 |  |  |  | * |  |  |  | .020543 |
Texas |  |  | 3.270419 |  |  |  | 0.193894 |  |  |  | 3.076525 |  |  |  | .000442 |  |  |  | .106219 |
TOTAL |  | $ | 4.436046 |  |  | $ | 0.325610 |  |  | $ | 4.110436 |  |  | $ | .000442 |  |  | $ | .144662 |

SECTION II

RECONCILIATION OF CASH DISTRIBUTIONS PER UNIT

Item |  | AMOUNT |
1. |  | Total Net Royalty Payments |  | $ | 4.110436 |
2. |  | Interest Income |  |  | .000442 |
3. |  | Administrative Expense |  |  | (.144662 | )
4. |  | Cash Distribution Per Unit** |  | $ | 3.966216 |

* | Revenue attributable to these states was invested and earned interest income. Because the investments were made in Dallas, Texas, and the interest was paid there, such interest is included in the Texas interest income.

** | Includes amounts withheld by the Trust from distributions to nonresident alien individuals and foreign corporations and remitted directly to the United States Treasury. This also includes amounts withheld pursuant to the backup withholding provisions.

(SRT 2011 TAX)

5

SABINE ROYALTY TRUST FEDERAL

Table I: 2011 Gross Royalty Income (Cumulative $ per Unit)

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.354182 |  |  |  | 0.658185 |  |  |  | 0.889760 |  |  |  | 1.366909 |  |  |  | 1.758249 |  |  |  | 2.119642 |  |  |  | 2.568190 |  |  |  | 3.010812 |  |  |  | 3.436261 |  |  |  | 3.832064 |  |  |  | 4.096886 |  |  |  | 4.436046 |
February |  |  | — |  |  |  | 0.304003 |  |  |  | 0.535578 |  |  |  | 1.012727 |  |  |  | 1.404067 |  |  |  | 1.765460 |  |  |  | 2.214008 |  |  |  | 2.656630 |  |  |  | 3.082079 |  |  |  | 3.477882 |  |  |  | 3.742704 |  |  |  | 4.081864 |
March |  |  | — |  |  |  | — |  |  |  | 0.231575 |  |  |  | 0.708724 |  |  |  | 1.100064 |  |  |  | 1.461457 |  |  |  | 1.910005 |  |  |  | 2.352627 |  |  |  | 2.778076 |  |  |  | 3.173879 |  |  |  | 3.438701 |  |  |  | 3.777861 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.477149 |  |  |  | 0.868489 |  |  |  | 1.229882 |  |  |  | 1.678430 |  |  |  | 2.121052 |  |  |  | 2.546501 |  |  |  | 2.942304 |  |  |  | 3.207126 |  |  |  | 3.546286 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.391340 |  |  |  | 0.752733 |  |  |  | 1.201281 |  |  |  | 1.643903 |  |  |  | 2.069352 |  |  |  | 2.465155 |  |  |  | 2.729977 |  |  |  | 3.069137 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.361393 |  |  |  | 0.809941 |  |  |  | 1.252563 |  |  |  | 1.678012 |  |  |  | 2.073815 |  |  |  | 2.338637 |  |  |  | 2.677797 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.448548 |  |  |  | 0.891170 |  |  |  | 1.316619 |  |  |  | 1.712422 |  |  |  | 1.977244 |  |  |  | 2.316404 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.442622 |  |  |  | 0.868071 |  |  |  | 1.263874 |  |  |  | 1.528696 |  |  |  | 1.867856 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.425449 |  |  |  | 0.821252 |  |  |  | 1.086074 |  |  |  | 1.425234 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.395803 |  |  |  | 0.660625 |  |  |  | 0.999785 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.264822 |  |  |  | 0.603982 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.339160 |
Table II: 2011 Severance Tax (Cumulative $ per Unit) |
FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.029063 |  |  |  | 0.055581 |  |  |  | 0.073282 |  |  |  | 0.103673 |  |  |  | 0.125095 |  |  |  | 0.152716 |  |  |  | 0.182088 |  |  |  | 0.214430 |  |  |  | 0.238095 |  |  |  | 0.269577 |  |  |  | 0.295529 |  |  |  | 0.325610 |
February |  |  | — |  |  |  | 0.026518 |  |  |  | 0.044219 |  |  |  | 0.074610 |  |  |  | 0.096032 |  |  |  | 0.123653 |  |  |  | 0.153025 |  |  |  | 0.185367 |  |  |  | 0.209032 |  |  |  | 0.240514 |  |  |  | 0.266466 |  |  |  | 0.296547 |
March |  |  | — |  |  |  | — |  |  |  | 0.017701 |  |  |  | 0.048092 |  |  |  | 0.069514 |  |  |  | 0.097135 |  |  |  | 0.126507 |  |  |  | 0.158849 |  |  |  | 0.182514 |  |  |  | 0.213996 |  |  |  | 0.239948 |  |  |  | 0.270029 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.030391 |  |  |  | 0.051813 |  |  |  | 0.079434 |  |  |  | 0.108806 |  |  |  | 0.141148 |  |  |  | 0.164813 |  |  |  | 0.196295 |  |  |  | 0.222247 |  |  |  | 0.252328 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.021422 |  |  |  | 0.049043 |  |  |  | 0.078415 |  |  |  | 0.110757 |  |  |  | 0.134422 |  |  |  | 0.165904 |  |  |  | 0.191856 |  |  |  | 0.221937 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.027621 |  |  |  | 0.056993 |  |  |  | 0.089335 |  |  |  | 0.113000 |  |  |  | 0.144482 |  |  |  | 0.170434 |  |  |  | 0.200515 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.029372 |  |  |  | 0.061714 |  |  |  | 0.085379 |  |  |  | 0.116861 |  |  |  | 0.142813 |  |  |  | 0.172894 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.032342 |  |  |  | 0.056007 |  |  |  | 0.087489 |  |  |  | 0.113441 |  |  |  | 0.143522 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.023665 |  |  |  | 0.055147 |  |  |  | 0.081099 |  |  |  | 0.111180 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.031482 |  |  |  | 0.057434 |  |  |  | 0.087515 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.025952 |  |  |  | 0.056033 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.030081 |

(SRT 2011 TAX)

6

SABINE ROYALTY TRUST FEDERAL

Table III: 2011 Interest Income (Cumulative $ per Unit)

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
JANUARY |  |  | 0.000052 |  |  |  | 0.000077 |  |  |  | 0.000098 |  |  |  | 0.000146 |  |  |  | 0.000191 |  |  |  | 0.000217 |  |  |  | 0.000245 |  |  |  | 0.000280 |  |  |  | 0.000317 |  |  |  | 0.000360 |  |  |  | 0.000400 |  |  |  | 0.000442 |
FEBRUARY |  |  | — |  |  |  | 0.000025 |  |  |  | 0.000046 |  |  |  | 0.000094 |  |  |  | 0.000139 |  |  |  | 0.000165 |  |  |  | 0.000193 |  |  |  | 0.000228 |  |  |  | 0.000265 |  |  |  | 0.000308 |  |  |  | 0.000348 |  |  |  | 0.000390 |
MARCH |  |  | — |  |  |  | — |  |  |  | 0.000021 |  |  |  | 0.000069 |  |  |  | 0.000114 |  |  |  | 0.000140 |  |  |  | 0.000168 |  |  |  | 0.000203 |  |  |  | 0.000240 |  |  |  | 0.000283 |  |  |  | 0.000323 |  |  |  | 0.000365 |
APRIL |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000048 |  |  |  | 0.000093 |  |  |  | 0.000119 |  |  |  | 0.000147 |  |  |  | 0.000182 |  |  |  | 0.000219 |  |  |  | 0.000262 |  |  |  | 0.000302 |  |  |  | 0.000344 |
MAY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000045 |  |  |  | 0.000071 |  |  |  | 0.000099 |  |  |  | 0.000134 |  |  |  | 0.000171 |  |  |  | 0.000214 |  |  |  | 0.000254 |  |  |  | 0.000296 |
JUNE |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000026 |  |  |  | 0.000054 |  |  |  | 0.000089 |  |  |  | 0.000126 |  |  |  | 0.000169 |  |  |  | 0.000209 |  |  |  | 0.000251 |
JULY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000028 |  |  |  | 0.000063 |  |  |  | 0.000100 |  |  |  | 0.000143 |  |  |  | 0.000183 |  |  |  | 0.000225 |
AUGUST |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000035 |  |  |  | 0.000072 |  |  |  | 0.000115 |  |  |  | 0.000155 |  |  |  | 0.000197 |
SEPTEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000037 |  |  |  | 0.000080 |  |  |  | 0.000120 |  |  |  | 0.000162 |
OCTOBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000043 |  |  |  | 0.000083 |  |  |  | 0.000125 |
NOVEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000040 |  |  |  | 0.000082 |
DECEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000042 |

Table IV: 2011 Trust Administrative Expense (Cumulative $ per Unit)

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
JANUARY |  |  | 0.012210 |  |  |  | 0.021745 |  |  |  | 0.034608 |  |  |  | 0.046797 |  |  |  | 0.071729 |  |  |  | 0.083615 |  |  |  | 0.093567 |  |  |  | 0.102729 |  |  |  | 0.112673 |  |  |  | 0.124315 |  |  |  | 0.134750 |  |  |  | 0.144662 |
FEBRUARY |  |  | — |  |  |  | 0.009535 |  |  |  | 0.022398 |  |  |  | 0.034587 |  |  |  | 0.059519 |  |  |  | 0.071405 |  |  |  | 0.081357 |  |  |  | 0.090519 |  |  |  | 0.100463 |  |  |  | 0.112105 |  |  |  | 0.122540 |  |  |  | 0.132452 |
MARCH |  |  | — |  |  |  | — |  |  |  | 0.012863 |  |  |  | 0.025052 |  |  |  | 0.049984 |  |  |  | 0.061870 |  |  |  | 0.071822 |  |  |  | 0.080984 |  |  |  | 0.090928 |  |  |  | 0.102570 |  |  |  | 0.113005 |  |  |  | 0.122917 |
APRIL |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.012189 |  |  |  | 0.037121 |  |  |  | 0.049007 |  |  |  | 0.058959 |  |  |  | 0.068121 |  |  |  | 0.078065 |  |  |  | 0.089707 |  |  |  | 0.100142 |  |  |  | 0.110054 |
MAY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.024932 |  |  |  | 0.036818 |  |  |  | 0.046770 |  |  |  | 0.055932 |  |  |  | 0.065876 |  |  |  | 0.077518 |  |  |  | 0.087953 |  |  |  | 0.097865 |
JUNE |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.011886 |  |  |  | 0.021838 |  |  |  | 0.031000 |  |  |  | 0.040944 |  |  |  | 0.052586 |  |  |  | 0.063021 |  |  |  | 0.072933 |
JULY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009952 |  |  |  | 0.019114 |  |  |  | 0.029058 |  |  |  | 0.040700 |  |  |  | 0.051135 |  |  |  | 0.061047 |
AUGUST |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009162 |  |  |  | 0.019106 |  |  |  | 0.030748 |  |  |  | 0.041183 |  |  |  | 0.051095 |
SEPTEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009944 |  |  |  | 0.021586 |  |  |  | 0.032021 |  |  |  | 0.041933 |
OCTOBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.011642 |  |  |  | 0.022077 |  |  |  | 0.031989 |
NOVEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.010435 |  |  |  | 0.020347 |
DECEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009912 |

(SRT 2011 TAX)

7

SABINE ROYALTY TRUST TEXAS

TABLE A TEXAS: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.254729 |  |  |  | 0.479173 |  |  |  | 0.650455 |  |  |  | 1.025190 |  |  |  | 1.313670 |  |  |  | 1.576208 |  |  |  | 1.914727 |  |  |  | 2.249761 |  |  |  | 2.557020 |  |  |  | 2.840714 |  |  |  | 3.015340 |  |  |  | 3.270419 |
February |  |  | — |  |  |  | 0.224444 |  |  |  | 0.395726 |  |  |  | 0.770461 |  |  |  | 1.058941 |  |  |  | 1.321479 |  |  |  | 1.659998 |  |  |  | 1.995032 |  |  |  | 2.302291 |  |  |  | 2.585985 |  |  |  | 2.760611 |  |  |  | 3.015690 |
March |  |  | — |  |  |  | — |  |  |  | 0.171282 |  |  |  | 0.546017 |  |  |  | 0.834497 |  |  |  | 1.097035 |  |  |  | 1.435554 |  |  |  | 1.770588 |  |  |  | 2.077847 |  |  |  | 2.361541 |  |  |  | 2.536167 |  |  |  | 2.791246 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.374735 |  |  |  | 0.663215 |  |  |  | 0.925753 |  |  |  | 1.264272 |  |  |  | 1.599306 |  |  |  | 1.906565 |  |  |  | 2.190259 |  |  |  | 2.364885 |  |  |  | 2.619964 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.288480 |  |  |  | 0.551018 |  |  |  | 0.889537 |  |  |  | 1.224571 |  |  |  | 1.531830 |  |  |  | 1.815524 |  |  |  | 1.990150 |  |  |  | 2.245229 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.262538 |  |  |  | 0.601057 |  |  |  | 0.936091 |  |  |  | 1.243350 |  |  |  | 1.527044 |  |  |  | 1.701670 |  |  |  | 1.956749 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.338519 |  |  |  | 0.673553 |  |  |  | 0.980812 |  |  |  | 1.264506 |  |  |  | 1.439132 |  |  |  | 1.694211 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.335034 |  |  |  | 0.642293 |  |  |  | 0.925987 |  |  |  | 1.100613 |  |  |  | 1.355692 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.307259 |  |  |  | 0.590953 |  |  |  | 0.765579 |  |  |  | 1.020658 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.283694 |  |  |  | 0.458320 |  |  |  | 0.713399 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.174626 |  |  |  | 0.429705 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.255079 |

TABLE B TEXAS: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.018251 |  |  |  | 0.035673 |  |  |  | 0.046085 |  |  |  | 0.063740 |  |  |  | 0.073324 |  |  |  | 0.089739 |  |  |  | 0.108233 |  |  |  | 0.128113 |  |  |  | 0.138415 |  |  |  | 0.157705 |  |  |  | 0.173121 |  |  |  | 0.193894 |
February |  |  | — |  |  |  | 0.017422 |  |  |  | 0.027834 |  |  |  | 0.045489 |  |  |  | 0.055073 |  |  |  | 0.071488 |  |  |  | 0.089982 |  |  |  | 0.109862 |  |  |  | 0.120164 |  |  |  | 0.139454 |  |  |  | 0.154870 |  |  |  | 0.175643 |
March |  |  | — |  |  |  | — |  |  |  | 0.010412 |  |  |  | 0.028067 |  |  |  | 0.037651 |  |  |  | 0.054066 |  |  |  | 0.072560 |  |  |  | 0.092440 |  |  |  | 0.102742 |  |  |  | 0.122032 |  |  |  | 0.137448 |  |  |  | 0.158221 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.017655 |  |  |  | 0.027239 |  |  |  | 0.043654 |  |  |  | 0.062148 |  |  |  | 0.082028 |  |  |  | 0.092330 |  |  |  | 0.111620 |  |  |  | 0.127036 |  |  |  | 0.147809 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009584 |  |  |  | 0.025999 |  |  |  | 0.044493 |  |  |  | 0.064373 |  |  |  | 0.074675 |  |  |  | 0.093965 |  |  |  | 0.109381 |  |  |  | 0.130154 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.016415 |  |  |  | 0.034909 |  |  |  | 0.054789 |  |  |  | 0.065091 |  |  |  | 0.084381 |  |  |  | 0.099797 |  |  |  | 0.120570 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.018494 |  |  |  | 0.038374 |  |  |  | 0.048676 |  |  |  | 0.067966 |  |  |  | 0.083382 |  |  |  | 0.104155 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.019880 |  |  |  | 0.030182 |  |  |  | 0.049472 |  |  |  | 0.064888 |  |  |  | 0.085661 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.010302 |  |  |  | 0.029592 |  |  |  | 0.045008 |  |  |  | 0.065781 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.019290 |  |  |  | 0.034706 |  |  |  | 0.055479 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.015416 |  |  |  | 0.036189 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.020773 |

TABLE C TEXAS: Interest Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000052 |  |  |  | 0.000077 |  |  |  | 0.000098 |  |  |  | 0.000146 |  |  |  | 0.000191 |  |  |  | 0.000217 |  |  |  | 0.000245 |  |  |  | 0.000280 |  |  |  | 0.000317 |  |  |  | 0.000360 |  |  |  | 0.000400 |  |  |  | 0.000442 |
February |  |  | — |  |  |  | 0.000025 |  |  |  | 0.000046 |  |  |  | 0.000094 |  |  |  | 0.000139 |  |  |  | 0.000165 |  |  |  | 0.000193 |  |  |  | 0.000228 |  |  |  | 0.000265 |  |  |  | 0.000308 |  |  |  | 0.000348 |  |  |  | 0.000390 |
March |  |  | — |  |  |  | — |  |  |  | 0.000021 |  |  |  | 0.000069 |  |  |  | 0.000114 |  |  |  | 0.000140 |  |  |  | 0.000168 |  |  |  | 0.000203 |  |  |  | 0.000240 |  |  |  | 0.000283 |  |  |  | 0.000323 |  |  |  | 0.000365 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000048 |  |  |  | 0.000093 |  |  |  | 0.000119 |  |  |  | 0.000147 |  |  |  | 0.000182 |  |  |  | 0.000219 |  |  |  | 0.000262 |  |  |  | 0.000302 |  |  |  | 0.000344 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000045 |  |  |  | 0.000071 |  |  |  | 0.000099 |  |  |  | 0.000134 |  |  |  | 0.000171 |  |  |  | 0.000214 |  |  |  | 0.000254 |  |  |  | 0.000296 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000026 |  |  |  | 0.000054 |  |  |  | 0.000089 |  |  |  | 0.000126 |  |  |  | 0.000169 |  |  |  | 0.000209 |  |  |  | 0.000251 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000028 |  |  |  | 0.000063 |  |  |  | 0.000100 |  |  |  | 0.000143 |  |  |  | 0.000183 |  |  |  | 0.000225 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000035 |  |  |  | 0.000072 |  |  |  | 0.000115 |  |  |  | 0.000155 |  |  |  | 0.000197 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000037 |  |  |  | 0.000080 |  |  |  | 0.000120 |  |  |  | 0.000162 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000043 |  |  |  | 0.000083 |  |  |  | 0.000125 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000040 |  |  |  | 0.000082 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000042 |

TABLE D TEXAS: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.008783 |  |  |  | 0.015821 |  |  |  | 0.025334 |  |  |  | 0.034906 |  |  |  | 0.053283 |  |  |  | 0.061918 |  |  |  | 0.069428 |  |  |  | 0.076363 |  |  |  | 0.083543 |  |  |  | 0.091888 |  |  |  | 0.098767 |  |  |  | 0.106219 |
February |  |  | — |  |  |  | 0.007038 |  |  |  | 0.016551 |  |  |  | 0.026123 |  |  |  | 0.044500 |  |  |  | 0.053135 |  |  |  | 0.060645 |  |  |  | 0.067580 |  |  |  | 0.074760 |  |  |  | 0.083105 |  |  |  | 0.089984 |  |  |  | 0.097436 |
March |  |  | — |  |  |  | — |  |  |  | 0.009513 |  |  |  | 0.019085 |  |  |  | 0.037462 |  |  |  | 0.046097 |  |  |  | 0.053607 |  |  |  | 0.060542 |  |  |  | 0.067722 |  |  |  | 0.076067 |  |  |  | 0.082946 |  |  |  | 0.090398 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009572 |  |  |  | 0.027949 |  |  |  | 0.036584 |  |  |  | 0.044094 |  |  |  | 0.051029 |  |  |  | 0.058209 |  |  |  | 0.066554 |  |  |  | 0.073433 |  |  |  | 0.080885 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.018377 |  |  |  | 0.027012 |  |  |  | 0.034522 |  |  |  | 0.041457 |  |  |  | 0.048637 |  |  |  | 0.056982 |  |  |  | 0.063861 |  |  |  | 0.071313 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.008635 |  |  |  | 0.016145 |  |  |  | 0.023080 |  |  |  | 0.030260 |  |  |  | 0.038605 |  |  |  | 0.045484 |  |  |  | 0.052936 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007510 |  |  |  | 0.014445 |  |  |  | 0.021625 |  |  |  | 0.029970 |  |  |  | 0.036849 |  |  |  | 0.044301 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006935 |  |  |  | 0.014115 |  |  |  | 0.022460 |  |  |  | 0.029339 |  |  |  | 0.036791 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007180 |  |  |  | 0.015525 |  |  |  | 0.022404 |  |  |  | 0.029856 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.008345 |  |  |  | 0.015224 |  |  |  | 0.022676 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006879 |  |  |  | 0.014331 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007452 |

(SRT 2011 TAX)

8

SABINE ROYALTY TRUST OKLAHOMA

TABLE A OKLAHOMA: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.044334 |  |  |  | 0.080819 |  |  |  | 0.114264 |  |  |  | 0.164489 |  |  |  | 0.229889 |  |  |  | 0.281665 |  |  |  | 0.336510 |  |  |  | 0.390516 |  |  |  | 0.458454 |  |  |  | 0.523874 |  |  |  | 0.572371 |  |  |  | 0.609875 |
February |  |  | — |  |  |  | 0.036485 |  |  |  | 0.069930 |  |  |  | 0.120155 |  |  |  | 0.185555 |  |  |  | 0.237331 |  |  |  | 0.292176 |  |  |  | 0.346182 |  |  |  | 0.414120 |  |  |  | 0.479540 |  |  |  | 0.528037 |  |  |  | 0.565541 |
March |  |  | — |  |  |  | — |  |  |  | 0.033445 |  |  |  | 0.083670 |  |  |  | 0.149070 |  |  |  | 0.200846 |  |  |  | 0.255691 |  |  |  | 0.309697 |  |  |  | 0.377635 |  |  |  | 0.443055 |  |  |  | 0.491552 |  |  |  | 0.529056 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.050225 |  |  |  | 0.115625 |  |  |  | 0.167401 |  |  |  | 0.222246 |  |  |  | 0.276252 |  |  |  | 0.344190 |  |  |  | 0.409610 |  |  |  | 0.458107 |  |  |  | 0.495611 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.065400 |  |  |  | 0.117176 |  |  |  | 0.172021 |  |  |  | 0.226027 |  |  |  | 0.293965 |  |  |  | 0.359385 |  |  |  | 0.407882 |  |  |  | 0.445386 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.051776 |  |  |  | 0.106621 |  |  |  | 0.160627 |  |  |  | 0.228565 |  |  |  | 0.293985 |  |  |  | 0.342482 |  |  |  | 0.379986 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.054845 |  |  |  | 0.108851 |  |  |  | 0.176789 |  |  |  | 0.242209 |  |  |  | 0.290706 |  |  |  | 0.328210 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.054006 |  |  |  | 0.121944 |  |  |  | 0.187364 |  |  |  | 0.235861 |  |  |  | 0.273365 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.067938 |  |  |  | 0.133358 |  |  |  | 0.181855 |  |  |  | 0.219359 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.065420 |  |  |  | 0.113917 |  |  |  | 0.151421 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.048497 |  |  |  | 0.086001 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.037504 |

TABLE B OKLAHOMA: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.005203 |  |  |  | 0.008310 |  |  |  | 0.012183 |  |  |  | 0.018687 |  |  |  | 0.026289 |  |  |  | 0.032401 |  |  |  | 0.037196 |  |  |  | 0.043586 |  |  |  | 0.051358 |  |  |  | 0.058144 |  |  |  | 0.063745 |  |  |  | 0.067665 |
February |  |  | — |  |  |  | 0.003107 |  |  |  | 0.006980 |  |  |  | 0.013484 |  |  |  | 0.021086 |  |  |  | 0.027198 |  |  |  | 0.031993 |  |  |  | 0.038383 |  |  |  | 0.046155 |  |  |  | 0.052941 |  |  |  | 0.058542 |  |  |  | 0.062462 |
March |  |  | — |  |  |  | — |  |  |  | 0.003873 |  |  |  | 0.010377 |  |  |  | 0.017979 |  |  |  | 0.024091 |  |  |  | 0.028886 |  |  |  | 0.035276 |  |  |  | 0.043048 |  |  |  | 0.049834 |  |  |  | 0.055435 |  |  |  | 0.059355 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006504 |  |  |  | 0.014106 |  |  |  | 0.020218 |  |  |  | 0.025013 |  |  |  | 0.031403 |  |  |  | 0.039175 |  |  |  | 0.045961 |  |  |  | 0.051562 |  |  |  | 0.055482 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007602 |  |  |  | 0.013714 |  |  |  | 0.018509 |  |  |  | 0.024899 |  |  |  | 0.032671 |  |  |  | 0.039457 |  |  |  | 0.045058 |  |  |  | 0.048978 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006112 |  |  |  | 0.010907 |  |  |  | 0.017297 |  |  |  | 0.025069 |  |  |  | 0.031855 |  |  |  | 0.037456 |  |  |  | 0.041376 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004795 |  |  |  | 0.011185 |  |  |  | 0.018957 |  |  |  | 0.025743 |  |  |  | 0.031344 |  |  |  | 0.035264 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006390 |  |  |  | 0.014162 |  |  |  | 0.020948 |  |  |  | 0.026549 |  |  |  | 0.030469 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007772 |  |  |  | 0.014558 |  |  |  | 0.020159 |  |  |  | 0.024079 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006786 |  |  |  | 0.012387 |  |  |  | 0.016307 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.005601 |  |  |  | 0.009521 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.003920 |

TABLE C OKLAHOMA: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.001528 |  |  |  | 0.002673 |  |  |  | 0.004531 |  |  |  | 0.005815 |  |  |  | 0.009982 |  |  |  | 0.011685 |  |  |  | 0.012902 |  |  |  | 0.014020 |  |  |  | 0.015609 |  |  |  | 0.017534 |  |  |  | 0.019446 |  |  |  | 0.020543 |
February |  |  | — |  |  |  | 0.001145 |  |  |  | 0.003003 |  |  |  | 0.004287 |  |  |  | 0.008454 |  |  |  | 0.010157 |  |  |  | 0.011374 |  |  |  | 0.012492 |  |  |  | 0.014081 |  |  |  | 0.016006 |  |  |  | 0.017918 |  |  |  | 0.019015 |
March |  |  | — |  |  |  | — |  |  |  | 0.001858 |  |  |  | 0.003142 |  |  |  | 0.007309 |  |  |  | 0.009012 |  |  |  | 0.010229 |  |  |  | 0.011347 |  |  |  | 0.012936 |  |  |  | 0.014861 |  |  |  | 0.016773 |  |  |  | 0.017870 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001284 |  |  |  | 0.005451 |  |  |  | 0.007154 |  |  |  | 0.008371 |  |  |  | 0.009489 |  |  |  | 0.011078 |  |  |  | 0.013003 |  |  |  | 0.014915 |  |  |  | 0.016012 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004167 |  |  |  | 0.005870 |  |  |  | 0.007087 |  |  |  | 0.008205 |  |  |  | 0.009794 |  |  |  | 0.011719 |  |  |  | 0.013631 |  |  |  | 0.014728 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001703 |  |  |  | 0.002920 |  |  |  | 0.004038 |  |  |  | 0.005627 |  |  |  | 0.007552 |  |  |  | 0.009464 |  |  |  | 0.010561 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001217 |  |  |  | 0.002335 |  |  |  | 0.003924 |  |  |  | 0.005849 |  |  |  | 0.007761 |  |  |  | 0.008858 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001118 |  |  |  | 0.002707 |  |  |  | 0.004632 |  |  |  | 0.006544 |  |  |  | 0.007641 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001589 |  |  |  | 0.003514 |  |  |  | 0.005426 |  |  |  | 0.006523 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001925 |  |  |  | 0.003837 |  |  |  | 0.004934 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001912 |  |  |  | 0.003009 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001097 |

(SRT 2011 TAX)

9

SABINE ROYALTY TRUST FLORIDA

TABLE A FLORIDA: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000417 |  |  |  | 0.000832 |  |  |  | 0.000999 |  |  |  | 0.001913 |  |  |  | 0.002380 |  |  |  | 0.002419 |  |  |  | 0.003662 |  |  |  | 0.004357 |  |  |  | 0.004561 |  |  |  | 0.005556 |  |  |  | 0.005993 |  |  |  | 0.006574 |
February |  |  | — |  |  |  | 0.000415 |  |  |  | 0.000582 |  |  |  | 0.001496 |  |  |  | 0.001963 |  |  |  | 0.002002 |  |  |  | 0.003245 |  |  |  | 0.003940 |  |  |  | 0.004144 |  |  |  | 0.005139 |  |  |  | 0.005576 |  |  |  | 0.006157 |
March |  |  | — |  |  |  | — |  |  |  | 0.000167 |  |  |  | 0.001081 |  |  |  | 0.001548 |  |  |  | 0.001587 |  |  |  | 0.002830 |  |  |  | 0.003525 |  |  |  | 0.003729 |  |  |  | 0.004724 |  |  |  | 0.005161 |  |  |  | 0.005742 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000914 |  |  |  | 0.001381 |  |  |  | 0.001420 |  |  |  | 0.002663 |  |  |  | 0.003358 |  |  |  | 0.003562 |  |  |  | 0.004557 |  |  |  | 0.004994 |  |  |  | 0.005575 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000467 |  |  |  | 0.000506 |  |  |  | 0.001749 |  |  |  | 0.002444 |  |  |  | 0.002648 |  |  |  | 0.003643 |  |  |  | 0.004080 |  |  |  | 0.004661 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000039 |  |  |  | 0.001282 |  |  |  | 0.001977 |  |  |  | 0.002181 |  |  |  | 0.003176 |  |  |  | 0.003613 |  |  |  | 0.004194 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001243 |  |  |  | 0.001938 |  |  |  | 0.002142 |  |  |  | 0.003137 |  |  |  | 0.003574 |  |  |  | 0.004155 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000695 |  |  |  | 0.000899 |  |  |  | 0.001894 |  |  |  | 0.002331 |  |  |  | 0.002912 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000204 |  |  |  | 0.001199 |  |  |  | 0.001636 |  |  |  | 0.002217 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000995 |  |  |  | 0.001432 |  |  |  | 0.002013 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000437 |  |  |  | 0.001018 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000581 |

TABLE B FLORIDA: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000019 |  |  |  | 0.000039 |  |  |  | 0.000066 |  |  |  | 0.000104 |  |  |  | 0.000128 |  |  |  | 0.000148 |  |  |  | 0.000175 |  |  |  | 0.000216 |  |  |  | 0.000225 |  |  |  | 0.000302 |  |  |  | 0.000316 |  |  |  | 0.000351 |
February |  |  | — |  |  |  | 0.000020 |  |  |  | 0.000047 |  |  |  | 0.000085 |  |  |  | 0.000109 |  |  |  | 0.000129 |  |  |  | 0.000156 |  |  |  | 0.000197 |  |  |  | 0.000206 |  |  |  | 0.000283 |  |  |  | 0.000297 |  |  |  | 0.000332 |
March |  |  | — |  |  |  | — |  |  |  | 0.000027 |  |  |  | 0.000065 |  |  |  | 0.000089 |  |  |  | 0.000109 |  |  |  | 0.000136 |  |  |  | 0.000177 |  |  |  | 0.000186 |  |  |  | 0.000263 |  |  |  | 0.000277 |  |  |  | 0.000312 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000038 |  |  |  | 0.000062 |  |  |  | 0.000082 |  |  |  | 0.000109 |  |  |  | 0.000150 |  |  |  | 0.000159 |  |  |  | 0.000236 |  |  |  | 0.000250 |  |  |  | 0.000285 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000024 |  |  |  | 0.000044 |  |  |  | 0.000071 |  |  |  | 0.000112 |  |  |  | 0.000121 |  |  |  | 0.000198 |  |  |  | 0.000212 |  |  |  | 0.000247 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000020 |  |  |  | 0.000047 |  |  |  | 0.000088 |  |  |  | 0.000097 |  |  |  | 0.000174 |  |  |  | 0.000188 |  |  |  | 0.000223 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000027 |  |  |  | 0.000068 |  |  |  | 0.000077 |  |  |  | 0.000154 |  |  |  | 0.000168 |  |  |  | 0.000203 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000041 |  |  |  | 0.000050 |  |  |  | 0.000127 |  |  |  | 0.000141 |  |  |  | 0.000176 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000009 |  |  |  | 0.000086 |  |  |  | 0.000100 |  |  |  | 0.000135 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000077 |  |  |  | 0.000091 |  |  |  | 0.000126 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000014 |  |  |  | 0.000049 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000035 |

TABLE C FLORIDA: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000014 |  |  |  | 0.000027 |  |  |  | 0.000036 |  |  |  | 0.000059 |  |  |  | 0.000089 |  |  |  | 0.000090 |  |  |  | 0.000118 |  |  |  | 0.000132 |  |  |  | 0.000137 |  |  |  | 0.000166 |  |  |  | 0.000183 |  |  |  | 0.000200 |
February |  |  | — |  |  |  | 0.000013 |  |  |  | 0.000022 |  |  |  | 0.000045 |  |  |  | 0.000075 |  |  |  | 0.000076 |  |  |  | 0.000104 |  |  |  | 0.000118 |  |  |  | 0.000123 |  |  |  | 0.000152 |  |  |  | 0.000169 |  |  |  | 0.000186 |
March |  |  | — |  |  |  | — |  |  |  | 0.000009 |  |  |  | 0.000032 |  |  |  | 0.000062 |  |  |  | 0.000063 |  |  |  | 0.000091 |  |  |  | 0.000105 |  |  |  | 0.000110 |  |  |  | 0.000139 |  |  |  | 0.000156 |  |  |  | 0.000173 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000023 |  |  |  | 0.000053 |  |  |  | 0.000054 |  |  |  | 0.000082 |  |  |  | 0.000096 |  |  |  | 0.000101 |  |  |  | 0.000130 |  |  |  | 0.000147 |  |  |  | 0.000164 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000030 |  |  |  | 0.000031 |  |  |  | 0.000059 |  |  |  | 0.000073 |  |  |  | 0.000078 |  |  |  | 0.000107 |  |  |  | 0.000124 |  |  |  | 0.000141 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000001 |  |  |  | 0.000029 |  |  |  | 0.000043 |  |  |  | 0.000048 |  |  |  | 0.000077 |  |  |  | 0.000094 |  |  |  | 0.000111 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000028 |  |  |  | 0.000042 |  |  |  | 0.000047 |  |  |  | 0.000076 |  |  |  | 0.000093 |  |  |  | 0.000110 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000014 |  |  |  | 0.000019 |  |  |  | 0.000048 |  |  |  | 0.000065 |  |  |  | 0.000082 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000005 |  |  |  | 0.000034 |  |  |  | 0.000051 |  |  |  | 0.000068 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000029 |  |  |  | 0.000046 |  |  |  | 0.000063 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000017 |  |  |  | 0.000034 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000017 |

(SRT 2011 TAX)

10

SABINE ROYALTY TRUST LOUISIANA

TABLE A LOUISIANA: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.008073 |  |  |  | 0.015656 |  |  |  | 0.019918 |  |  |  | 0.029283 |  |  |  | 0.035305 |  |  |  | 0.042627 |  |  |  | 0.049833 |  |  |  | 0.061060 |  |  |  | 0.068720 |  |  |  | 0.075024 |  |  |  | 0.081393 |  |  |  | 0.089734 |
February |  |  | — |  |  |  | 0.007583 |  |  |  | 0.011845 |  |  |  | 0.021210 |  |  |  | 0.027232 |  |  |  | 0.034554 |  |  |  | 0.041760 |  |  |  | 0.052987 |  |  |  | 0.060647 |  |  |  | 0.066951 |  |  |  | 0.073320 |  |  |  | 0.081661 |
March |  |  | — |  |  |  | — |  |  |  | 0.004262 |  |  |  | 0.013627 |  |  |  | 0.019649 |  |  |  | 0.026971 |  |  |  | 0.034177 |  |  |  | 0.045404 |  |  |  | 0.053064 |  |  |  | 0.059368 |  |  |  | 0.065737 |  |  |  | 0.074078 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009365 |  |  |  | 0.015387 |  |  |  | 0.022709 |  |  |  | 0.029915 |  |  |  | 0.041142 |  |  |  | 0.048802 |  |  |  | 0.055106 |  |  |  | 0.061475 |  |  |  | 0.069816 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006022 |  |  |  | 0.013344 |  |  |  | 0.020550 |  |  |  | 0.031777 |  |  |  | 0.039437 |  |  |  | 0.045741 |  |  |  | 0.052110 |  |  |  | 0.060451 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007322 |  |  |  | 0.014528 |  |  |  | 0.025755 |  |  |  | 0.033415 |  |  |  | 0.039719 |  |  |  | 0.046088 |  |  |  | 0.054429 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007206 |  |  |  | 0.018433 |  |  |  | 0.026093 |  |  |  | 0.032397 |  |  |  | 0.038766 |  |  |  | 0.047107 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.011227 |  |  |  | 0.018887 |  |  |  | 0.025191 |  |  |  | 0.031560 |  |  |  | 0.039901 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.007660 |  |  |  | 0.013964 |  |  |  | 0.020333 |  |  |  | 0.028674 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006304 |  |  |  | 0.012673 |  |  |  | 0.021014 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.006369 |  |  |  | 0.014710 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.008341 |

TABLE B LOUISIANA: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000622 |  |  |  | 0.002217 |  |  |  | 0.002518 |  |  |  | 0.003323 |  |  |  | 0.003780 |  |  |  | 0.004300 |  |  |  | 0.004802 |  |  |  | 0.005637 |  |  |  | 0.006132 |  |  |  | 0.006552 |  |  |  | 0.006978 |  |  |  | 0.007584 |
February |  |  | — |  |  |  | 0.001595 |  |  |  | 0.001896 |  |  |  | 0.002701 |  |  |  | 0.003158 |  |  |  | 0.003678 |  |  |  | 0.004180 |  |  |  | 0.005015 |  |  |  | 0.005510 |  |  |  | 0.005930 |  |  |  | 0.006356 |  |  |  | 0.006962 |
March |  |  | — |  |  |  | — |  |  |  | 0.000301 |  |  |  | 0.001106 |  |  |  | 0.001563 |  |  |  | 0.002083 |  |  |  | 0.002585 |  |  |  | 0.003420 |  |  |  | 0.003915 |  |  |  | 0.004335 |  |  |  | 0.004761 |  |  |  | 0.005367 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000805 |  |  |  | 0.001262 |  |  |  | 0.001782 |  |  |  | 0.002284 |  |  |  | 0.003119 |  |  |  | 0.003614 |  |  |  | 0.004034 |  |  |  | 0.004460 |  |  |  | 0.005066 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000457 |  |  |  | 0.000977 |  |  |  | 0.001479 |  |  |  | 0.002314 |  |  |  | 0.002809 |  |  |  | 0.003229 |  |  |  | 0.003655 |  |  |  | 0.004261 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000520 |  |  |  | 0.001022 |  |  |  | 0.001857 |  |  |  | 0.002352 |  |  |  | 0.002772 |  |  |  | 0.003198 |  |  |  | 0.003804 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000502 |  |  |  | 0.001337 |  |  |  | 0.001832 |  |  |  | 0.002252 |  |  |  | 0.002678 |  |  |  | 0.003284 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000835 |  |  |  | 0.001330 |  |  |  | 0.001750 |  |  |  | 0.002176 |  |  |  | 0.002782 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000495 |  |  |  | 0.000915 |  |  |  | 0.001341 |  |  |  | 0.001947 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000420 |  |  |  | 0.000846 |  |  |  | 0.001452 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000426 |  |  |  | 0.001032 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000606 |

TABLE C LOUISIANA: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000278 |  |  |  | 0.000516 |  |  |  | 0.000753 |  |  |  | 0.000992 |  |  |  | 0.001376 |  |  |  | 0.001617 |  |  |  | 0.001777 |  |  |  | 0.002009 |  |  |  | 0.002188 |  |  |  | 0.002373 |  |  |  | 0.002624 |  |  |  | 0.002868 |
February |  |  | — |  |  |  | 0.000238 |  |  |  | 0.000475 |  |  |  | 0.000714 |  |  |  | 0.001098 |  |  |  | 0.001339 |  |  |  | 0.001499 |  |  |  | 0.001731 |  |  |  | 0.001910 |  |  |  | 0.002095 |  |  |  | 0.002346 |  |  |  | 0.002590 |
March |  |  | — |  |  |  | — |  |  |  | 0.000237 |  |  |  | 0.000476 |  |  |  | 0.000860 |  |  |  | 0.001101 |  |  |  | 0.001261 |  |  |  | 0.001493 |  |  |  | 0.001672 |  |  |  | 0.001857 |  |  |  | 0.002108 |  |  |  | 0.002352 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000239 |  |  |  | 0.000623 |  |  |  | 0.000864 |  |  |  | 0.001024 |  |  |  | 0.001256 |  |  |  | 0.001435 |  |  |  | 0.001620 |  |  |  | 0.001871 |  |  |  | 0.002115 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000384 |  |  |  | 0.000625 |  |  |  | 0.000785 |  |  |  | 0.001017 |  |  |  | 0.001196 |  |  |  | 0.001381 |  |  |  | 0.001632 |  |  |  | 0.001876 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000241 |  |  |  | 0.000401 |  |  |  | 0.000633 |  |  |  | 0.000812 |  |  |  | 0.000997 |  |  |  | 0.001248 |  |  |  | 0.001492 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000160 |  |  |  | 0.000392 |  |  |  | 0.000571 |  |  |  | 0.000756 |  |  |  | 0.001007 |  |  |  | 0.001251 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000232 |  |  |  | 0.000411 |  |  |  | 0.000596 |  |  |  | 0.000847 |  |  |  | 0.001091 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000179 |  |  |  | 0.000364 |  |  |  | 0.000615 |  |  |  | 0.000859 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000185 |  |  |  | 0.000436 |  |  |  | 0.000680 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000251 |  |  |  | 0.000495 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000244 |

(SRT 2011 TAX)

11

SABINE ROYALTY TRUST MISSISSIPPI

TABLE A MISSISSIPPI: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.016719 |  |  |  | 0.028282 |  |  |  | 0.032746 |  |  |  | 0.046090 |  |  |  | 0.057322 |  |  |  | 0.070980 |  |  |  | 0.083617 |  |  |  | 0.097285 |  |  |  | 0.109680 |  |  |  | 0.121793 |  |  |  | 0.131546 |  |  |  | 0.142755 |
February |  |  | — |  |  |  | 0.011563 |  |  |  | 0.016027 |  |  |  | 0.029371 |  |  |  | 0.040603 |  |  |  | 0.054261 |  |  |  | 0.066898 |  |  |  | 0.080566 |  |  |  | 0.092961 |  |  |  | 0.105074 |  |  |  | 0.114827 |  |  |  | 0.126036 |
March |  |  | — |  |  |  | — |  |  |  | 0.004464 |  |  |  | 0.017808 |  |  |  | 0.029040 |  |  |  | 0.042698 |  |  |  | 0.055335 |  |  |  | 0.069003 |  |  |  | 0.081398 |  |  |  | 0.093511 |  |  |  | 0.103264 |  |  |  | 0.114473 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.013344 |  |  |  | 0.024576 |  |  |  | 0.038234 |  |  |  | 0.050871 |  |  |  | 0.064539 |  |  |  | 0.076934 |  |  |  | 0.089047 |  |  |  | 0.098800 |  |  |  | 0.110009 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.011232 |  |  |  | 0.024890 |  |  |  | 0.037527 |  |  |  | 0.051195 |  |  |  | 0.063590 |  |  |  | 0.075703 |  |  |  | 0.085456 |  |  |  | 0.096665 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.013658 |  |  |  | 0.026295 |  |  |  | 0.039963 |  |  |  | 0.052358 |  |  |  | 0.064471 |  |  |  | 0.074224 |  |  |  | 0.085433 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.012637 |  |  |  | 0.026305 |  |  |  | 0.038700 |  |  |  | 0.050813 |  |  |  | 0.060566 |  |  |  | 0.071775 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.013668 |  |  |  | 0.026063 |  |  |  | 0.038176 |  |  |  | 0.047929 |  |  |  | 0.059138 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.012395 |  |  |  | 0.024508 |  |  |  | 0.034261 |  |  |  | 0.045470 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.012113 |  |  |  | 0.021866 |  |  |  | 0.033075 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.009753 |  |  |  | 0.020962 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.011209 |

TABLE B MISSISSIPPI: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.001097 |  |  |  | 0.001905 |  |  |  | 0.002223 |  |  |  | 0.003226 |  |  |  | 0.003924 |  |  |  | 0.004665 |  |  |  | 0.005508 |  |  |  | 0.006344 |  |  |  | 0.007118 |  |  |  | 0.007867 |  |  |  | 0.008376 |  |  |  | 0.009076 |
February |  |  | — |  |  |  | 0.000808 |  |  |  | 0.001126 |  |  |  | 0.002129 |  |  |  | 0.002827 |  |  |  | 0.003568 |  |  |  | 0.004411 |  |  |  | 0.005247 |  |  |  | 0.006021 |  |  |  | 0.006770 |  |  |  | 0.007279 |  |  |  | 0.007979 |
March |  |  | — |  |  |  | — |  |  |  | 0.000318 |  |  |  | 0.001321 |  |  |  | 0.002019 |  |  |  | 0.002760 |  |  |  | 0.003603 |  |  |  | 0.004439 |  |  |  | 0.005213 |  |  |  | 0.005962 |  |  |  | 0.006471 |  |  |  | 0.007171 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001003 |  |  |  | 0.001701 |  |  |  | 0.002442 |  |  |  | 0.003285 |  |  |  | 0.004121 |  |  |  | 0.004895 |  |  |  | 0.005644 |  |  |  | 0.006153 |  |  |  | 0.006853 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000698 |  |  |  | 0.001439 |  |  |  | 0.002282 |  |  |  | 0.003118 |  |  |  | 0.003892 |  |  |  | 0.004641 |  |  |  | 0.005150 |  |  |  | 0.005850 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000741 |  |  |  | 0.001584 |  |  |  | 0.002420 |  |  |  | 0.003194 |  |  |  | 0.003943 |  |  |  | 0.004452 |  |  |  | 0.005152 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000843 |  |  |  | 0.001679 |  |  |  | 0.002453 |  |  |  | 0.003202 |  |  |  | 0.003711 |  |  |  | 0.004411 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000836 |  |  |  | 0.001610 |  |  |  | 0.002359 |  |  |  | 0.002868 |  |  |  | 0.003568 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000774 |  |  |  | 0.001523 |  |  |  | 0.002032 |  |  |  | 0.002732 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000749 |  |  |  | 0.001258 |  |  |  | 0.001958 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000509 |  |  |  | 0.001209 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000700 |

TABLE C MISSISSIPPI: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.000576 |  |  |  | 0.000939 |  |  |  | 0.001187 |  |  |  | 0.001528 |  |  |  | 0.002244 |  |  |  | 0.002693 |  |  |  | 0.002973 |  |  |  | 0.003256 |  |  |  | 0.003546 |  |  |  | 0.003902 |  |  |  | 0.004287 |  |  |  | 0.004615 |
February |  |  | — |  |  |  | 0.000363 |  |  |  | 0.000611 |  |  |  | 0.000952 |  |  |  | 0.001668 |  |  |  | 0.002117 |  |  |  | 0.002397 |  |  |  | 0.002680 |  |  |  | 0.002970 |  |  |  | 0.003326 |  |  |  | 0.003711 |  |  |  | 0.004039 |
March |  |  | — |  |  |  | — |  |  |  | 0.000248 |  |  |  | 0.000589 |  |  |  | 0.001305 |  |  |  | 0.001754 |  |  |  | 0.002034 |  |  |  | 0.002317 |  |  |  | 0.002607 |  |  |  | 0.002963 |  |  |  | 0.003348 |  |  |  | 0.003676 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000341 |  |  |  | 0.001057 |  |  |  | 0.001506 |  |  |  | 0.001786 |  |  |  | 0.002069 |  |  |  | 0.002359 |  |  |  | 0.002715 |  |  |  | 0.003100 |  |  |  | 0.003428 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000716 |  |  |  | 0.001165 |  |  |  | 0.001445 |  |  |  | 0.001728 |  |  |  | 0.002018 |  |  |  | 0.002374 |  |  |  | 0.002759 |  |  |  | 0.003087 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000449 |  |  |  | 0.000729 |  |  |  | 0.001012 |  |  |  | 0.001302 |  |  |  | 0.001658 |  |  |  | 0.002043 |  |  |  | 0.002371 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000280 |  |  |  | 0.000563 |  |  |  | 0.000853 |  |  |  | 0.001209 |  |  |  | 0.001594 |  |  |  | 0.001922 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000283 |  |  |  | 0.000573 |  |  |  | 0.000929 |  |  |  | 0.001314 |  |  |  | 0.001642 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000290 |  |  |  | 0.000646 |  |  |  | 0.001031 |  |  |  | 0.001359 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000356 |  |  |  | 0.000741 |  |  |  | 0.001069 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000385 |  |  |  | 0.000713 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000328 |

(SRT 2011 TAX)

12

SABINE ROYALTY TRUST NEW MEXICO

TABLE A NEW MEXICO: Gross Royalty Income

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.029910 |  |  |  | 0.053423 |  |  |  | 0.071378 |  |  |  | 0.099944 |  |  |  | 0.119683 |  |  |  | 0.145743 |  |  |  | 0.179841 |  |  |  | 0.207833 |  |  |  | 0.237826 |  |  |  | 0.265103 |  |  |  | 0.290243 |  |  |  | 0.316689 |
February |  |  | — |  |  |  | 0.023513 |  |  |  | 0.041468 |  |  |  | 0.070034 |  |  |  | 0.089773 |  |  |  | 0.115833 |  |  |  | 0.149931 |  |  |  | 0.177923 |  |  |  | 0.207916 |  |  |  | 0.235193 |  |  |  | 0.260333 |  |  |  | 0.286779 |
March |  |  | — |  |  |  | — |  |  |  | 0.017955 |  |  |  | 0.046521 |  |  |  | 0.066260 |  |  |  | 0.092320 |  |  |  | 0.126418 |  |  |  | 0.154410 |  |  |  | 0.184403 |  |  |  | 0.211680 |  |  |  | 0.236820 |  |  |  | 0.263266 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.028566 |  |  |  | 0.048305 |  |  |  | 0.074365 |  |  |  | 0.108463 |  |  |  | 0.136455 |  |  |  | 0.166448 |  |  |  | 0.193725 |  |  |  | 0.218865 |  |  |  | 0.245311 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.019739 |  |  |  | 0.045799 |  |  |  | 0.079897 |  |  |  | 0.107889 |  |  |  | 0.137882 |  |  |  | 0.165159 |  |  |  | 0.190299 |  |  |  | 0.216745 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.026060 |  |  |  | 0.060158 |  |  |  | 0.088150 |  |  |  | 0.118143 |  |  |  | 0.145420 |  |  |  | 0.170560 |  |  |  | 0.197006 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.034098 |  |  |  | 0.062090 |  |  |  | 0.092083 |  |  |  | 0.119360 |  |  |  | 0.144500 |  |  |  | 0.170946 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.027992 |  |  |  | 0.057985 |  |  |  | 0.085262 |  |  |  | 0.110402 |  |  |  | 0.136848 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.029993 |  |  |  | 0.057270 |  |  |  | 0.082410 |  |  |  | 0.108856 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.027277 |  |  |  | 0.052417 |  |  |  | 0.078863 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.025140 |  |  |  | 0.051586 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.026446 |

TABLE B NEW MEXICO: Severance Tax

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.003871 |  |  |  | 0.007437 |  |  |  | 0.010207 |  |  |  | 0.014593 |  |  |  | 0.017650 |  |  |  | 0.021463 |  |  |  | 0.026174 |  |  |  | 0.030534 |  |  |  | 0.034847 |  |  |  | 0.039007 |  |  |  | 0.042993 |  |  |  | 0.047040 |
February |  |  | — |  |  |  | 0.003566 |  |  |  | 0.006336 |  |  |  | 0.010722 |  |  |  | 0.013779 |  |  |  | 0.017592 |  |  |  | 0.022303 |  |  |  | 0.026663 |  |  |  | 0.030976 |  |  |  | 0.035136 |  |  |  | 0.039122 |  |  |  | 0.043169 |
March |  |  | — |  |  |  | — |  |  |  | 0.002770 |  |  |  | 0.007156 |  |  |  | 0.010213 |  |  |  | 0.014026 |  |  |  | 0.018737 |  |  |  | 0.023097 |  |  |  | 0.027410 |  |  |  | 0.031570 |  |  |  | 0.035556 |  |  |  | 0.039603 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004386 |  |  |  | 0.007443 |  |  |  | 0.011256 |  |  |  | 0.015967 |  |  |  | 0.020327 |  |  |  | 0.024640 |  |  |  | 0.028800 |  |  |  | 0.032786 |  |  |  | 0.036833 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.003057 |  |  |  | 0.006870 |  |  |  | 0.011581 |  |  |  | 0.015941 |  |  |  | 0.020254 |  |  |  | 0.024414 |  |  |  | 0.028400 |  |  |  | 0.032447 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.003813 |  |  |  | 0.008524 |  |  |  | 0.012884 |  |  |  | 0.017197 |  |  |  | 0.021357 |  |  |  | 0.025343 |  |  |  | 0.029390 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004711 |  |  |  | 0.009071 |  |  |  | 0.013384 |  |  |  | 0.017544 |  |  |  | 0.021530 |  |  |  | 0.025577 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004360 |  |  |  | 0.008673 |  |  |  | 0.012833 |  |  |  | 0.016819 |  |  |  | 0.020866 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004313 |  |  |  | 0.008473 |  |  |  | 0.012459 |  |  |  | 0.016506 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004160 |  |  |  | 0.008146 |  |  |  | 0.012193 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.003986 |  |  |  | 0.008033 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.004047 |

TABLE C NEW MEXICO: Administrative Expense

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
| 2011 |
| January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | 0.001031 |  |  |  | 0.001769 |  |  |  | 0.002767 |  |  |  | 0.003497 |  |  |  | 0.004755 |  |  |  | 0.005612 |  |  |  | 0.006369 |  |  |  | 0.006949 |  |  |  | 0.007650 |  |  |  | 0.008452 |  |  |  | 0.009443 |  |  |  | 0.010217 |
February |  |  | — |  |  |  | 0.000738 |  |  |  | 0.001736 |  |  |  | 0.002466 |  |  |  | 0.003724 |  |  |  | 0.004581 |  |  |  | 0.005338 |  |  |  | 0.005918 |  |  |  | 0.006619 |  |  |  | 0.007421 |  |  |  | 0.008412 |  |  |  | 0.009186 |
March |  |  | — |  |  |  | — |  |  |  | 0.000998 |  |  |  | 0.001728 |  |  |  | 0.002986 |  |  |  | 0.003843 |  |  |  | 0.004600 |  |  |  | 0.005180 |  |  |  | 0.005881 |  |  |  | 0.006683 |  |  |  | 0.007674 |  |  |  | 0.008448 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000730 |  |  |  | 0.001988 |  |  |  | 0.002845 |  |  |  | 0.003602 |  |  |  | 0.004182 |  |  |  | 0.004883 |  |  |  | 0.005685 |  |  |  | 0.006676 |  |  |  | 0.007450 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.001258 |  |  |  | 0.002115 |  |  |  | 0.002872 |  |  |  | 0.003452 |  |  |  | 0.004153 |  |  |  | 0.004955 |  |  |  | 0.005946 |  |  |  | 0.006720 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000857 |  |  |  | 0.001614 |  |  |  | 0.002194 |  |  |  | 0.002895 |  |  |  | 0.003697 |  |  |  | 0.004688 |  |  |  | 0.005462 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000757 |  |  |  | 0.001337 |  |  |  | 0.002038 |  |  |  | 0.002840 |  |  |  | 0.003831 |  |  |  | 0.004605 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000580 |  |  |  | 0.001281 |  |  |  | 0.002083 |  |  |  | 0.003074 |  |  |  | 0.003848 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000701 |  |  |  | 0.001503 |  |  |  | 0.002494 |  |  |  | 0.003268 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000802 |  |  |  | 0.001793 |  |  |  | 0.002567 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000991 |  |  |  | 0.001765 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.000774 |

(SRT 2011 TAX)

13

SABINE ROYALTY TRUST

Depletion Schedule D-I

The cumulative and noncumulative cost depletion factors reflected in Depletion Schedule D-I should be used to compute 2011 federal depletion amounts attributable to Units purchased for which the Unit holder initially became entitled to distributions in 2011. This schedule should not be used to compute depletion for any other Units owned. (See accompanying information for computation instructions.)

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  | January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
January |  |  | .012353 |  |  |  | .022668 |  |  |  | .030219 |  |  |  | .045036 |  |  |  | .057028 |  |  |  | .067517 |  |  |  | .079477 |  |  |  | .091804 |  |  |  | .103843 |  |  |  | .115252 |  |  |  | .124760 |  |  |  | .136832 |
February |  |  | — |  |  |  | .010315 |  |  |  | .017866 |  |  |  | .032683 |  |  |  | .044675 |  |  |  | .055164 |  |  |  | .067124 |  |  |  | .079451 |  |  |  | .091490 |  |  |  | .102899 |  |  |  | .112407 |  |  |  | .124479 |
March |  |  | — |  |  |  | — |  |  |  | .007551 |  |  |  | .022368 |  |  |  | .034360 |  |  |  | .044849 |  |  |  | .056809 |  |  |  | .069136 |  |  |  | .081175 |  |  |  | .092584 |  |  |  | .102092 |  |  |  | .114164 |
April |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .014817 |  |  |  | .026809 |  |  |  | .037298 |  |  |  | .049258 |  |  |  | .061585 |  |  |  | .073624 |  |  |  | .085033 |  |  |  | .094541 |  |  |  | .106613 |
May |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .011992 |  |  |  | .022481 |  |  |  | .034441 |  |  |  | .046768 |  |  |  | .058807 |  |  |  | .070216 |  |  |  | .079724 |  |  |  | .091796 |
June |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .010489 |  |  |  | .022449 |  |  |  | .034776 |  |  |  | .046815 |  |  |  | .058224 |  |  |  | .067732 |  |  |  | .079804 |
July |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .011960 |  |  |  | .024287 |  |  |  | .036326 |  |  |  | .047735 |  |  |  | .057243 |  |  |  | .069315 |
August |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .012327 |  |  |  | .024366 |  |  |  | .035775 |  |  |  | .045283 |  |  |  | .057355 |
September |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .012039 |  |  |  | .023448 |  |  |  | .032956 |  |  |  | .045028 |
October |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .011409 |  |  |  | .020917 |  |  |  | .032989 |
November |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .009508 |  |  |  | .021580 |
December |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | .012072 |

Depletion Schedule D-II

The non-cumulative cost depletion factors reflected in Depletion Schedule D-II should be used to compute 2011 state cost depletion amounts attributable to Units purchased for which the Unit holder initially became entitled to distributions in any year. The applicable number to use is the number related to the last month in which the units were owned in 2011. (See accompanying information for computation instructions.)

STATE DEPLETION FACTORS |  | January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
Florida |  |  | .000017 |  |  |  | .000016 |  |  |  | .000006 |  |  |  | .000037 |  |  |  | .000019 |  |  |  | .000005 |  |  |  | .000040 |  |  |  | .000025 |  |  |  | .000010 |  |  |  | .000042 |  |  |  | .000016 |  |  |  | .000022 |
Louisiana |  |  | .000260 |  |  |  | .000229 |  |  |  | .000134 |  |  |  | .000276 |  |  |  | .000169 |  |  |  | .000209 |  |  |  | .000171 |  |  |  | .000260 |  |  |  | .000219 |  |  |  | .000156 |  |  |  | .000187 |  |  |  | .000214 |
Mississippi |  |  | .000531 |  |  |  | .000388 |  |  |  | .000165 |  |  |  | .000413 |  |  |  | .000280 |  |  |  | .000338 |  |  |  | .000285 |  |  |  | .000347 |  |  |  | .000302 |  |  |  | .000287 |  |  |  | .000225 |  |  |  | .000298 |
New Mexico |  |  | .000791 |  |  |  | .000690 |  |  |  | .000484 |  |  |  | .000817 |  |  |  | .000533 |  |  |  | .000542 |  |  |  | .000800 |  |  |  | .000713 |  |  |  | .000755 |  |  |  | .000677 |  |  |  | .000708 |  |  |  | .000695 |
Oklahoma |  |  | .001265 |  |  |  | .001013 |  |  |  | .000884 |  |  |  | .001310 |  |  |  | .001963 |  |  |  | .001475 |  |  |  | .001328 |  |  |  | .001379 |  |  |  | .002048 |  |  |  | .001434 |  |  |  | .001277 |  |  |  | .000924 |
Texas |  |  | .009489 |  |  |  | .007979 |  |  |  | .005878 |  |  |  | .011964 |  |  |  | .009028 |  |  |  | .007920 |  |  |  | .009336 |  |  |  | .009603 |  |  |  | .008705 |  |  |  | .008813 |  |  |  | .007095 |  |  |  | .009919 |
TOTAL |  |  | .012353 |  |  |  | .010315 |  |  |  | .007551 |  |  |  | .014817 |  |  |  | .011992 |  |  |  | .010489 |  |  |  | .011960 |  |  |  | .012327 |  |  |  | .012039 |  |  |  | .011409 |  |  |  | .009508 |  |  |  | .012072 |

(SRT 2011 TAX)

14

SABINE ROYALTY TRUST

Depletion Schedule D-III

The cumulative federal cost depletion factors reflected in Depletion Schedule D-III should be used to compute 2011 federal cost depletion amounts attributable to Units purchased for which the Unit holder initially became entitled to distributions in the year stated. For depletion factors relating to the individual states, please use Depletion Schedule D-II on page 14. (See accompanying information for computation instructions.)

FOR A UNIT ACQUIRED OF RECORD DURING THE YEAR OF: |  | LAST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |
|  | 2011 |
|  | January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
Original Distribution |  |  | .013125 |  |  |  | .024013 |  |  |  | .031978 |  |  |  | .047679 |  |  |  | .060600 |  |  |  | .071834 |  |  |  | .084436 |  |  |  | .097483 |  |  |  | .110275 |  |  |  | .122389 |  |  |  | .132346 |  |  |  | .145098 |
1983 |  |  | .011977 |  |  |  | .022004 |  |  |  | .029441 |  |  |  | .044235 |  |  |  | .056021 |  |  |  | .066242 |  |  |  | .078017 |  |  |  | .090131 |  |  |  | .101670 |  |  |  | .112893 |  |  |  | .122051 |  |  |  | .134197 |
1984 |  |  | .007527 |  |  |  | .013831 |  |  |  | .018503 |  |  |  | .027817 |  |  |  | .035216 |  |  |  | .041634 |  |  |  | .049031 |  |  |  | .056647 |  |  |  | .063875 |  |  |  | .070924 |  |  |  | .076666 |  |  |  | .084317 |
1985 |  |  | .010166 |  |  |  | .018676 |  |  |  | .024975 |  |  |  | .037541 |  |  |  | .047484 |  |  |  | .056125 |  |  |  | .066103 |  |  |  | .076369 |  |  |  | .086094 |  |  |  | .095595 |  |  |  | .103337 |  |  |  | .113662 |
Before March 17, 1986 |  |  | .008027 |  |  |  | .014752 |  |  |  | .019731 |  |  |  | .029668 |  |  |  | .037513 |  |  |  | .044332 |  |  |  | .052222 |  |  |  | .060334 |  |  |  | .068003 |  |  |  | .075508 |  |  |  | .081623 |  |  |  | .089796 |
After March 17, 1986 |  |  | .006165 |  |  |  | .011330 |  |  |  | .015152 |  |  |  | .022776 |  |  |  | .028792 |  |  |  | .034023 |  |  |  | .040078 |  |  |  | .046304 |  |  |  | .052190 |  |  |  | .057950 |  |  |  | .062646 |  |  |  | .068917 |
1987 |  |  | .008498 |  |  |  | .015617 |  |  |  | .020889 |  |  |  | .031407 |  |  |  | .039720 |  |  |  | .046942 |  |  |  | .055299 |  |  |  | .063890 |  |  |  | .072020 |  |  |  | .079973 |  |  |  | .086453 |  |  |  | .095102 |
1988 |  |  | .009162 |  |  |  | .016835 |  |  |  | .022532 |  |  |  | .033856 |  |  |  | .042886 |  |  |  | .050709 |  |  |  | .059733 |  |  |  | .069008 |  |  |  | .077850 |  |  |  | .086451 |  |  |  | .093469 |  |  |  | .102767 |
1989 |  |  | .008753 |  |  |  | .016075 |  |  |  | .021519 |  |  |  | .032293 |  |  |  | .040997 |  |  |  | .048512 |  |  |  | .057129 |  |  |  | .065992 |  |  |  | .074530 |  |  |  | .082769 |  |  |  | .089502 |  |  |  | .098325 |
1990 |  |  | .008275 |  |  |  | .015200 |  |  |  | .020349 |  |  |  | .030531 |  |  |  | .038752 |  |  |  | .045851 |  |  |  | .054009 |  |  |  | .062387 |  |  |  | .070466 |  |  |  | .078260 |  |  |  | .084637 |  |  |  | .092977 |
1991 |  |  | .007699 |  |  |  | .014146 |  |  |  | .018942 |  |  |  | .028359 |  |  |  | .035998 |  |  |  | .042598 |  |  |  | .050203 |  |  |  | .057985 |  |  |  | .065560 |  |  |  | .072816 |  |  |  | .078799 |  |  |  | .086504 |
1992 |  |  | .009021 |  |  |  | .016563 |  |  |  | .022207 |  |  |  | .033171 |  |  |  | .042283 |  |  |  | .050106 |  |  |  | .059033 |  |  |  | .068171 |  |  |  | .077245 |  |  |  | .085796 |  |  |  | .092882 |  |  |  | .101822 |
1993 |  |  | .009186 |  |  |  | .016871 |  |  |  | .022612 |  |  |  | .033776 |  |  |  | .043019 |  |  |  | .050959 |  |  |  | .060060 |  |  |  | .069360 |  |  |  | .078577 |  |  |  | .087289 |  |  |  | .094510 |  |  |  | .103610 |
1994 |  |  | .008013 |  |  |  | .014711 |  |  |  | .019717 |  |  |  | .029463 |  |  |  | .037590 |  |  |  | .044547 |  |  |  | .052497 |  |  |  | .060625 |  |  |  | .068706 |  |  |  | .076339 |  |  |  | .082639 |  |  |  | .090563 |
1995 |  |  | .008527 |  |  |  | .015651 |  |  |  | .020971 |  |  |  | .031333 |  |  |  | .040023 |  |  |  | .047434 |  |  |  | .055918 |  |  |  | .064574 |  |  |  | .073210 |  |  |  | .081375 |  |  |  | .088095 |  |  |  | .096496 |
1996 |  |  | .008131 |  |  |  | .014917 |  |  |  | .020025 |  |  |  | .029834 |  |  |  | .038316 |  |  |  | .045495 |  |  |  | .053616 |  |  |  | .061901 |  |  |  | .070379 |  |  |  | .078235 |  |  |  | .084744 |  |  |  | .092660 |
1997 |  |  | .011404 |  |  |  | .020931 |  |  |  | .028061 |  |  |  | .041899 |  |  |  | .053592 |  |  |  | .063547 |  |  |  | .074902 |  |  |  | .086495 |  |  |  | .098129 |  |  |  | .109072 |  |  |  | .118095 |  |  |  | .129306 |
1998 |  |  | .012337 |  |  |  | .022626 |  |  |  | .030302 |  |  |  | .045201 |  |  |  | .057807 |  |  |  | .068564 |  |  |  | .080771 |  |  |  | .093263 |  |  |  | .105813 |  |  |  | .117583 |  |  |  | .127296 |  |  |  | .139356 |
1999 |  |  | .012749 |  |  |  | .023375 |  |  |  | .031240 |  |  |  | .046556 |  |  |  | .059352 |  |  |  | .070368 |  |  |  | .088984 |  |  |  | .101803 |  |  |  | .114585 |  |  |  | .126590 |  |  |  | .136533 |  |  |  | .148948 |
2000 |  |  | .012649 |  |  |  | .023168 |  |  |  | .030890 |  |  |  | .045949 |  |  |  | .058485 |  |  |  | .069334 |  |  |  | .081618 |  |  |  | .094231 |  |  |  | .106803 |  |  |  | .118607 |  |  |  | .128399 |  |  |  | .140589 |
2001 |  |  | .012290 |  |  |  | .022481 |  |  |  | .029973 |  |  |  | .044228 |  |  |  | .056624 |  |  |  | .067310 |  |  |  | .079186 |  |  |  | .091390 |  |  |  | .104078 |  |  |  | .115559 |  |  |  | .125275 |  |  |  | .136695 |
2002 |  |  | .012375 |  |  |  | .022689 |  |  |  | .030286 |  |  |  | .044949 |  |  |  | .057310 |  |  |  | .067962 |  |  |  | .080093 |  |  |  | .092473 |  |  |  | .105009 |  |  |  | .116668 |  |  |  | .126422 |  |  |  | .138253 |
2003 |  |  | .012452 |  |  |  | .022703 |  |  |  | .030348 |  |  |  | .045096 |  |  |  | .057608 |  |  |  | .068374 |  |  |  | .080541 |  |  |  | .092994 |  |  |  | .105634 |  |  |  | .117353 |  |  |  | .127137 |  |  |  | .139036 |
2004 |  |  | .012438 |  |  |  | .022802 |  |  |  | .030420 |  |  |  | .045257 |  |  |  | .057571 |  |  |  | .068224 |  |  |  | .080366 |  |  |  | .092796 |  |  |  | .105185 |  |  |  | .116831 |  |  |  | .126516 |  |  |  | .138534 |
2005 |  |  | .012440 |  |  |  | .022796 |  |  |  | .030435 |  |  |  | .045239 |  |  |  | .057717 |  |  |  | .068454 |  |  |  | .080629 |  |  |  | .093089 |  |  |  | .105649 |  |  |  | .117371 |  |  |  | .127119 |  |  |  | .139070 |
2006 |  |  | .012386 |  |  |  | .022713 |  |  |  | .030325 |  |  |  | .045086 |  |  |  | .057412 |  |  |  | .068060 |  |  |  | .080175 |  |  |  | .092576 |  |  |  | .105008 |  |  |  | .116633 |  |  |  | .126332 |  |  |  | .138281 |
2007 |  |  | .012095 |  |  |  | .022203 |  |  |  | .029657 |  |  |  | .044245 |  |  |  | .056191 |  |  |  | .066529 |  |  |  | .078412 |  |  |  | .090549 |  |  |  | .102563 |  |  |  | .113928 |  |  |  | .123380 |  |  |  | .135188 |
2008 |  |  | .011851 |  |  |  | .021747 |  |  |  | .029031 |  |  |  | .043276 |  |  |  | .054945 |  |  |  | .065061 |  |  |  | .076658 |  |  |  | .088532 |  |  |  | .100234 |  |  |  | .111325 |  |  |  | .120534 |  |  |  | .132112 |
2009 |  |  | .011892 |  |  |  | .021798 |  |  |  | .029088 |  |  |  | .043286 |  |  |  | .055075 |  |  |  | .065290 |  |  |  | .076848 |  |  |  | .088741 |  |  |  | .100575 |  |  |  | .111667 |  |  |  | .120898 |  |  |  | .132409 |
2010 |  |  | .012254 |  |  |  | .022477 |  |  |  | .029980 |  |  |  | .044671 |  |  |  | .056692 |  |  |  | .067160 |  |  |  | .079044 |  |  |  | .091298 |  |  |  | .103348 |  |  |  | .114721 |  |  |  | .124182 |  |  |  | .136122 |

(SRT 2011 TAX)

15

SABINE ROYALTY TRUST

Depletion Schedule D-IV

The noncumulative and cumulative depletion factors reflected in Depletion Schedule D-IV should be used to compute 2011 federal percentage depletion amounts attributable to Units purchased for which the Unit holder initially became entitled to distributions in any year. (See accompanying information for computation instructions.)

FIRST MONTH IN WHICH UNITS WERE OWNED ON THE MONTHLY RECORD DATE IN 2011 |  | January |  |  | February |  |  | March |  |  | April |  |  | May |  |  | June |  |  | July |  |  | August |  |  | September |  |  | October |  |  | November |  |  | December |
JANUARY |  |  | 0.053127 |  |  |  | 0.098727 |  |  |  | 0.133463 |  |  |  | 0.205035 |  |  |  | 0.263736 |  |  |  | 0.317945 |  |  |  | 0.385227 |  |  |  | 0.451620 |  |  |  | 0.515437 |  |  |  | 0.574807 |  |  |  | 0.614530 |  |  |  | 0.665404 |
FEBRUARY |  |  | — |  |  |  | 0.045600 |  |  |  | 0.080336 |  |  |  | 0.151908 |  |  |  | 0.210609 |  |  |  | 0.264818 |  |  |  | 0.332100 |  |  |  | 0.398493 |  |  |  | 0.462310 |  |  |  | 0.521680 |  |  |  | 0.561403 |  |  |  | 0.612277 |
MARCH |  |  | — |  |  |  | — |  |  |  | 0.034736 |  |  |  | 0.106308 |  |  |  | 0.165009 |  |  |  | 0.219218 |  |  |  | 0.286500 |  |  |  | 0.352893 |  |  |  | 0.416710 |  |  |  | 0.476080 |  |  |  | 0.515803 |  |  |  | 0.566677 |
APRIL |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.071572 |  |  |  | 0.130273 |  |  |  | 0.184482 |  |  |  | 0.251764 |  |  |  | 0.318157 |  |  |  | 0.381974 |  |  |  | 0.441344 |  |  |  | 0.481067 |  |  |  | 0.531941 |
MAY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.058701 |  |  |  | 0.112910 |  |  |  | 0.180192 |  |  |  | 0.246585 |  |  |  | 0.310402 |  |  |  | 0.369772 |  |  |  | 0.409495 |  |  |  | 0.460369 |
JUNE |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.054209 |  |  |  | 0.121491 |  |  |  | 0.187884 |  |  |  | 0.251701 |  |  |  | 0.311071 |  |  |  | 0.350794 |  |  |  | 0.401668 |
JULY |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.067282 |  |  |  | 0.133675 |  |  |  | 0.197492 |  |  |  | 0.256862 |  |  |  | 0.296585 |  |  |  | 0.347459 |
AUGUST |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.066393 |  |  |  | 0.130210 |  |  |  | 0.189580 |  |  |  | 0.229303 |  |  |  | 0.280177 |
SEPTEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.063817 |  |  |  | 0.123187 |  |  |  | 0.162910 |  |  |  | 0.213784 |
OCTOBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.059370 |  |  |  | 0.099093 |  |  |  | 0.149967 |
NOVEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.039723 |  |  |  | 0.090597 |
DECEMBER |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.050874 |

(SRT 2011 TAX)

16

SABINE ROYALTY TRUST

TAX COMPUTATION WORKSHEET

2011

(RETAIN THIS WORKPAPER AS PART OF YOUR PERMANENT TAX RECORDS)

Part I

INCOME AND EXPENSE

Item |  |  |  | A Number of Units Owned (Note 1) |  |  |  | B Income/Expense Per Unit from Appropriate Schedule(s) (Note 2) |  |  |  | C Totals |  |  |  | Where to Reflect on 2011 Form 1040 (Note 3)
Gross Royalty Income |  |  |  |  |  | X |  |  |  | = |  |  |  |  |  | Line 3b, Part I, Schedule E
Severance Tax |  |  |  |  |  | X |  |  |  | = |  |  |  |  |  | Line 16, Part I, Schedule E
Interest Income |  |  |  |  |  | X |  |  |  | = |  |  |  |  |  | Line 1, Part I, Schedule B
Administrative Expense |  |  |  |  |  | X |  |  |  | = |  |  |  |  |  | Line 19, Part I, Schedule E

Part II

COST DEPLETION (Note 4)

Original Basis |  |  |  | Cost Depletion Allowable in Prior Calendar Years (Note 5) |  |  |  | Adjusted Basis for Cost Depletion Purposes |  |  |  | Appropriate 2011 Cost Depletion Factor (Note 4) |  |  |  | 2011 Cost Depletion
|  | – |  |  |  | = |  |  |  | X |  |  |  | = |  |

* | Reflect cost depletion on 2011 Form 1040, line 18, Part 1, Schedule E (Note 3).

Part III

COMPUTATION OF GAIN OR (LOSS) FOR UNITS SOLD

Net Sales Price |  |  |  | Adjusted Basis (Note 6) |  |  |  | Gain (Loss) |  | Where to Reflect on 2011 Form 1040 (Note 3)
|  | – |  |  |  | = |  |  |  | Form 4797 Part III, Lines 19-24 and Schedule D

Notes

(1) | In order to correctly calculate total income and expense to be reported on your 2011 federal and, if applicable, state tax returns, it is recommended that you reproduce and complete a separate Tax Computation Worksheet for each block of Units acquired at different times, as different factors apply depending on when units were acquired. If more than one Tax Computation Worksheet is required, the separate amounts from each Tax Computation Worksheet should be added together and those aggregate numbers reported on your 2011 income tax returns.

(2) | If you did not become a Unit holder of record of any Unit(s) or did not cease to be a Unit holder of record of any Unit(s) during the period from January 18, 2011 through December 15, 2011, then the amounts reflected on the cumulative schedule for 2011 (located on page 5) should be used to complete Part I. See Comprehensive Example 1 on page 22. If any Units were held of record for only part of the period defined above, then the appropriate federal income and expense factors for Part I can be determined by using Tables I-IV (on pages 6 and 7) by locating the factor at the intersection of the first and last month in which the Units were owned by the Unit holder on the Monthly Record Date in 2011. See Comprehensive Examples 2 and 3 on pages 23 and 24 for further explanation. The appropriate state income and expense factors can be determined by using the state tables in the same manner, which are located on pages 8 through 13.

(3) | The Trustee believes that individual Unit holders owning the Units as an investment should report the amounts determined in this manner. See Sample Tax Forms on pages 17-20. The U.S. Corporation Income Tax Return (Form 1120) does not require that royalty income and related expenses be separately identified on any specific schedules. See “Sale or Exchange of Units” on page A-4 for a discussion of the tax consequences resulting from the sale of a Unit.

(4) | The appropriate depletion schedule(s) to be utilized depends on when the Units were acquired. See “Computing Depletion” on page 2 to determine the proper schedule(s) to be used. This worksheet assumes a Unit holder will take the cost depletion deduction. Some Unit holders may be entitled to a percentage depletion deduction in lieu of a cost depletion deduction, in which case Depletion Schedule D-IV (on page 16) should be used to compute such Unit holder’s depletion deduction for purposes of Part II of this worksheet. See pages 2 and A-2—A-3 of this booklet for additional information regarding depletion deductions.

(5) | Cost depletion allowable in prior calendar years cannot be computed from the schedules contained in this booklet. Depletion schedules contained in Sabine Royalty Trust Tax Information Booklet(s) from prior years should be used to determine the appropriate cost depletion amount(s) allowable in prior calendar years.

(6) | The adjusted basis is equal to the cost or other basis of the Unit(s) less the cost depletion allowable from the date of acquisition through the date of sale (whether or not deducted).

(SRT 2011 TAX)

21

COMPREHENSIVE EXAMPLE 1

The following example illustrates the computations necessary for an individual to determine income and expense attributable to Units acquired in March of 1984 and held throughout 2011.

COMPUTATION OF INCOME AND EXPENSE FOR UNITS OWNED ON ALL MONTHLY RECORD

DATES IN 2011

SABINE ROYALTY TRUST

TAX COMPUTATION WORKSHEET

2011

(RETAIN THIS WORKPAPER AS PART OF YOUR PERMANENT TAX RECORDS)

Part I

INCOME AND EXPENSE

Item |  |  |  | A Number of Units Owned (Note 1) |  |  |  | B Income/Expense Per Unit from Appropriate Schedule(s) (Note 2) |  |  |  |  | C Totals |  |  |  |  | Where to Reflect on 2011 Form 1040 (Note 3)
Gross Royalty Income |  |  |  | 100 |  | X |  | $ | 4.436046 |  |  | = |  | $ | 443.60 |  |  |  |  | Line 3b, Part I, Schedule E
Severance Tax |  |  |  | 100 |  | X |  | $ | .325610 |  |  | = |  | $ | 32.56 |  |  |  |  | Line 16, Part I, Schedule E
Interest Income |  |  |  | 100 |  | X |  | $ | .000442 |  |  | = |  | $ | .04 |  |  |  |  | Line 1, Part I, Schedule B
Administrative Expense |  |  |  | 100 |  | X |  | $ | .144662 |  |  | = |  | $ | 14.47 |  |  |  |  | Line 19, Part I, Schedule E

Part II

COST DEPLETION (Note 4)

Assumed Original Basis* |  |  |  | Cost Depletion Allowable in Prior Calendar Years (Notes 4 and 5) |  |  |  | Adjusted Basis for Cost Depletion Purposes |  |  |  | Appropriate 2011 Cost Depletion Factor per Depletion Schedule D-III |  |  |  | 2011 Cost Depletion**
$2,100.00 |  | – |  | $2,026.79 |  | = |  | $73.21 |  | X |  | .084317 |  | = |  | $6.17

* | This number is used for example purposes only. Each Unit holder’s basis is unique to that specific Unit holder.

** | Reflect cost depletion on 2011 Form 1040, line 18, Part 1, Schedule E (Note 3).

See Page 21 for Applicable Notes.

(SRT 2011 TAX)

22

COMPREHENSIVE EXAMPLE 2

The following example illustrates the computations necessary for an individual to determine income and expenses and gain or loss on Units acquired in 1984 and disposed of during 2011. The factors in this example are located at the intersection of January and March on the appropriate tables (i.e., the first and last month of 2011 in which Units were owned on Monthly Record Dates).

|  | Acquisition Date |  | Acquisition Date |  | Acquisition Date |  | Acquisition Date |  | Acquisition Date
Acquisition Date |  | Units Acquired |  | Original Basis |  | Sales Date |  | Units Sold |  | Sales Price
03-21-84 |  | 100 |  | $2,100.00 |  | 04-2-11 |  | 100 |  | $5,075.00

COMPUTATION OF INCOME AND EXPENSE FOR UNITS SOLD IN 2011

SABINE ROYALTY TRUST

TAX COMPUTATION WORKSHEET

2011

(RETAIN THIS WORKPAPER AS PART OF YOUR PERMANENT TAX RECORDS)

Part I

INCOME AND EXPENSE

Item |  |  |  | A Number of Units Owned (Note 1) |  |  |  |  | B Income/Expense Per Unit from Appropriate Schedule(s) (Note 2) |  |  |  |  |  | C Totals |  |  |  |  | Where to Reflect on 2011 Form 1040 (Note 3)
Gross Royalty Income |  |  |  |  | 100 |  |  | X |  | $ | .889760 |  |  |  | = |  |  | $ | 88.98 |  |  |  |  | Line 3b, Part I, Schedule E
Severance Tax |  |  |  |  | 100 |  |  | X |  | $ | .073282 |  |  |  | = |  |  | $ | 7.33 |  |  |  |  | Line 16, Part I, Schedule E
Interest Income |  |  |  |  | 100 |  |  | X |  | $ | .000098 |  |  |  | = |  |  | $ | 0.01 |  |  |  |  | Line 1, Part I, Schedule B
Administrative Expense |  |  |  |  | 100 |  |  | X |  | $ | .034608 |  |  |  | = |  |  | $ | 3.46 |  |  |  |  | Line 19, Part I, Schedule E

Part II

COST DEPLETION (Notes 4 and 5)

Assumed Original Basis* |  |  |  | Cost Depletion Allowable in Prior Calendar Years (Note 5) |  |  |  | Adjusted Basis for Cost Depletion Purposes |  |  |  | Appropriate 2011 Cost Depletion Factor per Depletion Schedule III |  |  |  | 2011 Cost Depletion**
$2,100.00 |  | – |  | $2,026.79 |  | = |  | $73.21 |  | X |  | .018503 |  | = |  | $1.35

* | This number is used for example purposes only. Each Unit holder’s basis is unique to that specific Unit holder.

** | Reflect cost depletion on 2011 Form 1040, line 18, Part 1, Schedule E (Note 3).

Part III

COMPUTATION OF GAIN OR (LOSS) FOR UNITS SOLD

Net Sales Price |  |  |  | Adjusted Basis (Note 6) |  |  |  | Gain (Loss) |  | Where to Reflect on 2011 Form 1040 (Note 3)
$5,075.00 |  | – |  | $71.86 |  | = |  | $5,003.14 |  | Form 4797, Part III, Lines 19-24 and Schedule D

See Page 21 for Applicable Notes.

(SRT 2011 TAX)

23

COMPREHENSIVE EXAMPLE 3

The following example illustrates the computations necessary for an individual to determine income and expenses and gain or loss on Units acquired and disposed of during 2011. The factors in this example are located at the intersection of April and September on the appropriate tables (i.e., the first and last month of 2011 in which Units were owned on monthly Record Dates).

|  | Acquisition Date |  | Acquisition Date |  | Acquisition Date |  | Acquisition Date |  | Acquisition Date
Acquisition Date |  | Units Acquired |  | Original Basis |  | Sales Date |  | Units Sold |  | Sales Price
03-30-11 |  | 100 |  | $2,100.00 |  | 10-01-11 |  | 100 |  | $3,000.00

COMPUTATION OF INCOME AND EXPENSE FOR UNITS SOLD IN 2011

SABINE ROYALTY TRUST

TAX COMPUTATION WORKSHEET

2011

(RETAIN THIS WORKPAPER AS PART OF YOUR PERMANENT TAX RECORDS)

Part I

INCOME AND EXPENSE

Item |  |  |  | A Number of Units Owned (Note 1) |  |  |  |  | B Income/Expense Per Unit from Appropriate Schedule(s) (Note 2) |  |  |  |  |  | C Totals |  |  |  |  | Where to Reflect on 2011 Form 1040 (Note 3)
Gross Royalty Income |  |  |  |  | 100 |  |  | X |  | $ | 2.546501 |  |  |  | = |  |  | $ | 254.65 |  |  |  |  | Line 3b, Part I, Schedule E
Severance Tax |  |  |  |  | 100 |  |  | X |  | $ | .164813 |  |  |  | = |  |  | $ | 16.48 |  |  |  |  | Line 16, Part I, Schedule E
Interest Income |  |  |  |  | 100 |  |  | X |  | $ | .000219 |  |  |  | = |  |  | $ | .02 |  |  |  |  | Line 1, Part I, Schedule B
Administrative Expense |  |  |  |  | 100 |  |  | X |  | $ | .078065 |  |  |  | = |  |  | $ | 7.81 |  |  |  |  | Line 19, Part I, Schedule E

Part II

COST DEPLETION (Notes 4 and 5)

Assumed Original Basis* |  |  |  | Cost Depletion Allowable in Prior Calendar Years (Note 5) |  |  |  | Adjusted Basis for Cost Depletion Purposes |  |  |  | Appropriate 2011 Cost Depletion Factor per Depletion Schedule D-I |  |  |  | 2011 Cost Depletion**
$2,100.00 |  | – |  | $0.00 |  | = |  | $2,100.00 |  | X |  | .073624 |  | = |  | $154.61

* | This number is used for example purposes only. Each Unit holder’s basis is unique to that specific Unit holder.

** | Reflect cost depletion on 2011 Form 1040, line 18, Part 1, Schedule E (Notes 4 and 5).

Part III

COMPUTATION OF GAIN OR (LOSS) FOR UNITS SOLD

Net Sales Price |  |  |  | Adjusted Basis (Note 6) |  |  |  | Gain (Loss) |  | Where to Reflect on 2011 Form 1040 (Note 3)
$3,000.00 |  | – |  | $1,945.39 |  | = |  | $1,054.61 |  | Form 4797, Part III, Lines 19-24 and Schedule D

See Page 21 for Applicable Notes.

(SRT 2011 TAX)

24

SABINE ROYALTY TRUST HISTORICAL TAX WORKSHEET

|  | GROSS INCOME |  | WINDFALL PROFIT TAX |  | SEVERANCE TAX |  | NET ROYALTY PMTS |  | INTEREST INCOME |  | ADMIN. EXPENSE |  | MISC. INCOME/ EXPENSE |  | NET CASH DISTRIB
1983 |  |  |  | 2.721361 |  |  |  |  | 0.316613 |  |  |  |  | 0.155445 |  |  |  |  | 2.249303 |  |  |  |  | 0.019377 |  |  |  |  | 0.086800 |  |  |  |  | 0.000000 |  |  |  |  | 2.181880 |
1984 |  |  |  | 3.496106 |  |  |  |  | 0.323679 |  |  |  |  | 0.196022 |  |  |  |  | 2.976405 |  |  |  |  | 0.031846 |  |  |  |  | 0.155652 |  |  |  |  | 0.000000 |  |  |  |  | 2.852599 |
1985 |  |  |  | 2.853378 |  |  |  |  | 0.190767 |  |  |  |  | 0.171256 |  |  |  |  | 2.491355 |  |  |  |  | 0.021277 |  |  |  |  | 0.169099 |  |  |  |  | -0.005487 |  |  |  |  | 2.338046 |
1986 |  |  |  | 1.807003 |  |  |  |  | 0.041149 |  |  |  |  | 0.114513 |  |  |  |  | 1.651341 |  |  |  |  | 0.012242 |  |  |  |  | 0.184580 |  |  |  |  | 0.005487 |  |  |  |  | 1.484490 |
1987 |  |  |  | 1.648950 |  |  |  |  | 0.000209 |  |  |  |  | 0.095558 |  |  |  |  | 1.553183 |  |  |  |  | 0.010601 |  |  |  |  | 0.127094 |  |  |  |  | 0.000000 |  |  |  |  | 1.436690 |
1988 |  |  |  | 1.556021 |  |  |  |  | 0.000077 |  |  |  |  | 0.101561 |  |  |  |  | 1.454383 |  |  |  |  | 0.010753 |  |  |  |  | 0.098526 |  |  |  |  | 0.000000 |  |  |  |  | 1.366610 |
1989 |  |  |  | 1.594196 |  |  |  |  | 0.000028 |  |  |  |  | 0.131330 |  |  |  |  | 1.462838 |  |  |  |  | 0.013627 |  |  |  |  | 0.096295 |  |  |  |  | 0.000000 |  |  |  |  | 1.380170 |
1990 |  |  |  | 1.748059 |  |  |  |  | 0.000000 |  |  |  |  | 0.155821 |  |  |  |  | 1.592238 |  |  |  |  | 0.014058 |  |  |  |  | 0.075026 |  |  |  |  | 0.000000 |  |  |  |  | 1.531270 |
1991 |  |  |  | 1.810596 |  |  |  |  | 0.000000 |  |  |  |  | 0.188955 |  |  |  |  | 1.621641 |  |  |  |  | 0.010622 |  |  |  |  | 0.084643 |  |  |  |  | 0.000000 |  |  |  |  | 1.547620 |
1992 |  |  |  | 1.556025 |  |  |  |  | 0.000000 |  |  |  |  | 0.132087 |  |  |  |  | 1.423938 |  |  |  |  | 0.005520 |  |  |  |  | 0.135228 |  |  |  |  | 0.000000 |  |  |  |  | 1.294230 |
1993 |  |  |  | 1.751674 |  |  |  |  | 0.000000 |  |  |  |  | 0.126197 |  |  |  |  | 1.625477 |  |  |  |  | 0.005316 |  |  |  |  | 0.169163 |  |  |  |  | 0.000000 |  |  |  |  | 1.461630 |
1994 |  |  |  | 1.422338 |  |  |  |  | 0.000000 |  |  |  |  | 0.094300 |  |  |  |  | 1.328038 |  |  |  |  | 0.005172 |  |  |  |  | 0.135390 |  |  |  |  | 0.000000 |  |  |  |  | 1.197820 |
1995 |  |  |  | 1.257833 |  |  |  |  | 0.000000 |  |  |  |  | 0.086219 |  |  |  |  | 1.171614 |  |  |  |  | 0.007424 |  |  |  |  | 0.151878 |  |  |  |  | 0.000000 |  |  |  |  | 1.027160 |
1996 |  |  |  | 1.650891 |  |  |  |  | 0.000000 |  |  |  |  | 0.102044 |  |  |  |  | 1.548847 |  |  |  |  | 0.009748 |  |  |  |  | 0.187465 |  |  |  |  | 0.000000 |  |  |  |  | 1.371130 |
1997 |  |  |  | 1.955335 |  |  |  |  | 0.000000 |  |  |  |  | 0.144324 |  |  |  |  | 1.811011 |  |  |  |  | 0.010812 |  |  |  |  | 0.177263 |  |  |  |  | 0.000000 |  |  |  |  | 1.644560 |
1998 |  |  |  | 1.937789 |  |  |  |  | 0.000000 |  |  |  |  | 0.123769 |  |  |  |  | 1.814020 |  |  |  |  | 0.011159 |  |  |  |  | 0.171521 |  |  |  |  | 0.000000 |  |  |  |  | 1.653658 |
1999 |  |  |  | 1.663391 |  |  |  |  | 0.000000 |  |  |  |  | 0.115700 |  |  |  |  | 1.547691 |  |  |  |  | 0.008112 |  |  |  |  | 0.148838 |  |  |  |  | 0.000000 |  |  |  |  | 1.406965 |
2000 |  |  |  | 2.586743 |  |  |  |  | 0.000000 |  |  |  |  | 0.157354 |  |  |  |  | 2.429389 |  |  |  |  | 0.016044 |  |  |  |  | 0.170794 |  |  |  |  | 0.000000 |  |  |  |  | 2.274639 |
2001 |  |  |  | 3.240755 |  |  |  |  | 0.000000 |  |  |  |  | 0.210965 |  |  |  |  | 3.029790 |  |  |  |  | 0.014627 |  |  |  |  | 0.183788 |  |  |  |  | 0.000000 |  |  |  |  | 2.860629 |
2002 |  |  |  | 2.175093 |  |  |  |  | 0.000000 |  |  |  |  | 0.125845 |  |  |  |  | 2.049248 |  |  |  |  | 0.003150 |  |  |  |  | 0.173568 |  |  |  |  | 0.000000 |  |  |  |  | 1.878830 |
2003 |  |  |  | 2.930078 |  |  |  |  | 0.000000 |  |  |  |  | 0.214244 |  |  |  |  | 2.715834 |  |  |  |  | 0.003272 |  |  |  |  | 0.196541 |  |  |  |  | 0.000000 |  |  |  |  | 2.522565 |
2004 |  |  |  | 3.277066 |  |  |  |  | 0.000000 |  |  |  |  | 0.271605 |  |  |  |  | 3.005461 |  |  |  |  | 0.003421 |  |  |  |  | 0.222941 |  |  |  |  | 0.000000 |  |  |  |  | 2.785941 |
2005 |  |  |  | 3.874801 |  |  |  |  | 0.000000 |  |  |  |  | 0.304563 |  |  |  |  | 3.570238 |  |  |  |  | 0.011804 |  |  |  |  | 0.150250 |  |  |  |  | 0.000000 |  |  |  |  | 3.431792 |
2006 |  |  |  | 4.733425 |  |  |  |  | 0.000000 |  |  |  |  | 0.376823 |  |  |  |  | 4.356602 |  |  |  |  | 0.024294 |  |  |  |  | 0.144170 |  |  |  |  | 0.000000 |  |  |  |  | 4.236726 |
2007 |  |  |  | 4.334040 |  |  |  |  | 0.000000 |  |  |  |  | 0.361711 |  |  |  |  | 3.972329 |  |  |  |  | 0.023849 |  |  |  |  | 0.145689 |  |  |  |  | 0.000000 |  |  |  |  | 3.850489 |
2008 |  |  |  | 6.587048 |  |  |  |  | 0.000000 |  |  |  |  | 0.421450 |  |  |  |  | 6.165598 |  |  |  |  | 0.020735 |  |  |  |  | 0.150146 |  |  |  |  | 0.000000 |  |  |  |  | 6.036187 |
2009 |  |  |  | 3.162408 |  |  |  |  | 0.000000 |  |  |  |  | 0.218949 |  |  |  |  | 2.943459 |  |  |  |  | 0.001744 |  |  |  |  | 0.153550 |  |  |  |  | 0.000000 |  |  |  |  | 2.791653 |
2010 |  |  |  | 4.153492 |  |  |  |  | 0.000000 |  |  |  |  | 0.308146 |  |  |  |  | 3.845346 |  |  |  |  | 0.000306 |  |  |  |  | 0.141111 |  |  |  |  | 0.000000 |  |  |  |  | 3.704541 |
2011 |  |  |  | 4.436046 |  |  |  |  | 0.000000 |  |  |  |  | 0.325610 |  |  |  |  | 4.110436 |  |  |  |  | 0.000442 |  |  |  |  | 0.144662 |  |  |  |  | 0.000000 |  |  |  |  | 3.966216 |

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SABINE ROYALTY TRUST

DISCUSSION OF TAX CONSIDERATIONS PERTAINING TO THE

OWNERSHIP OF UNITS IN SABINE ROYALTY TRUST

The tax law requires individuals, estates, trusts, closely held C corporations and personal service corporations to categorize income and expense into one of three classes, “active,” “portfolio” or “passive,” based upon the nature of the activity and the involvement of the taxpayer in such activity. Because the Trust is a grantor trust, the Unit holders are deemed to hold the investment in the royalty interests directly and the proper classification of the Trust income and expense will be dependent upon the relevant facts and circumstances of each Unit holder. Generally, income or loss resulting from an interest in the Trust is properly classified as portfolio income and as such can be reported as directed on the tax computation worksheet (page 21). However, under certain limited circumstances a different tax classification may be appropriate. Accordingly, Unit holders should consult their own tax advisor regarding all tax compliance matters related to the Units.

Tax Background and WHFIT Information

The Trust was established by the Sabine Corporation Royalty Trust Agreement (the “Trust Agreement”), made and entered into effective as of December 31, 1982, to receive a distribution from Sabine Corporation (“Sabine”) of royalty and mineral interests, including landowner’s royalties, overriding royalty interests, minerals (other than executive rights, bonuses and delay rentals), production payments and any other similar, nonparticipatory interests, in certain producing and proved undeveloped oil and gas properties located in Florida, Louisiana, Mississippi, New Mexico, Oklahoma and Texas.

Sabine received a private letter ruling from the Internal Revenue Service, dated May 2, 1983 (the “Ruling”), concerning certain tax considerations relevant to the creation and continued existence of the Trust. Pursuant to the Ruling, the Trust is classified for federal income tax purposes as a “grantor trust” and not as an association taxable as a corporation. A grantor trust is not subject to federal income tax. Instead, its beneficiaries (the Unit holders in the case of the Trust) are generally considered to own the trust’s income and principal as though no trust were in existence. A grantor trust simply files an information return reflecting all items of income and/or deductions that will be included in the returns of the beneficiaries. Accordingly, each Unit holder of the Trust is taxable on his pro rata share of the Trust’s income and/or deductions.

The income received or accrued and the deductions paid or incurred by the Trust are deemed to be received or accrued and paid or incurred, respectively, by each Unit holder at the same time as the Trust, which is on each Monthly Record Date. On the basis of both the Trust Agreement and the escrow agreement (discussed below), both cash and accrual basis Unit holders should be considered as realizing income and incurring expenses only on the Monthly Record Dates.

Some Trust Units are held by middlemen, as such term is broadly defined in U.S. Treasury Regulations (and includes custodians, nominees, certain joint owners, and brokers holding an interest for a customer in street name, referred to herein collectively as “middlemen”). Therefore, the Trustee considers the Trust to be a non-mortgage widely held fixed investment trust (“WHFIT”) for U.S. federal income tax purposes. U.S. Trust, Bank of America Private Wealth Management, EIN: 56-0906609, 901 Main Street, 17th Floor, Dallas, Texas 75202, telephone number (214) 209-2400, is the representative of the Trust that will provide tax information in accordance with applicable U.S. Treasury Regulations governing the information reporting requirements of the Trust as a WHFIT. Tax information is also posted by the Trustee at www.sbr-sabineroyalty.com. Notwithstanding the foregoing, the middlemen holding Trust Units on behalf of Unit holders, and not the Trustee of the Trust, are solely responsible for complying with the information reporting requirements under the U. S. Treasury Regulations with respect

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to such Trust Units, including the issuance of IRS Forms 1099 and certain written tax statements. Unit holders whose Trust Units are held by middlemen should consult with such middlemen regarding the information that will be reported to them by the middlemen with respect to the Trust Units.

Effect of Escrow Arrangement

The assets of the Trust include royalty and mineral interests in certain producing and proved undeveloped oil and gas properties (the “Properties”), which constitute economic interests in gross production of oil, gas and other minerals free of the costs of production. The Properties are located in six states and were not carved out of any of Sabine’s working interests in effecting the distribution. In order to facilitate the creation of the Trust and to avoid the administrative expense and inconvenience of daily reporting to Unit holders, the conveyances by Sabine of the Properties located in all states except Louisiana provided for the execution of an escrow agreement by Sabine. The Trustee now serves as escrow agent. The conveyances by Sabine of the Properties located in Louisiana provided for the execution of a substantially identical escrow agreement by Sabine. Sabine Louisiana Royalty Trust, the sole beneficiary of which is the Trust, was established in order to avoid uncertainty under Louisiana law as to the legality of the Trustee’s holding record title to the Properties located in Louisiana.

Pursuant to the terms of the escrow agreement and the conveyances of the Properties by Sabine, the proceeds of production from the Properties for each calendar month, and interest thereon, are collected by the escrow agent and are paid to and received by the Trust only on the next Monthly Record Date. The escrow agent has agreed to endeavor to assure that it incurs and pays expenses for each calendar month only on the Monthly Record Date. The Trust Agreement also provides that the Trustee is to endeavor to assure that income of the Trust will be accrued and received and that expenses of the Trust will be incurred and paid only on each Monthly Record Date. Assuming the escrow arrangement is respected for federal income tax purposes and the Trustee, as escrow agent, is able to control the timing of income and expenses, as stated above, both cash and accrual basis Unit holders will be treated as realizing income and incurring expenses only on each Monthly Record Date. The Trustee is treating the escrow arrangement as effective for tax purposes and the accompanying tax information has been presented accordingly.

If the escrow arrangement is not respected for federal income tax purposes, a mismatching of income and deductions could occur between a transferor and a transferee upon the sale or exchange of Units. In addition, the Trustee would be required to report the proceeds from production, interest income thereon, and any deductions to the Unit holders on a daily basis, resulting in a substantial increase in the administrative expenses of the Trust.

Depletion

Cost Depletion

Pursuant to the Ruling, each Unit holder is entitled to deduct cost depletion with respect to his pro rata interest in the Properties. A Unit holder’s cost depletion deduction is computed by reference to the Unit holder’s adjusted basis in each of his Units.

The deduction for cost depletion must be computed by a Unit holder with respect to each separate property in the Trust. A Unit holder’s tax basis in each separate property generally must be determined at the time each Unit is acquired by allocating such Unit holder’s cost in each Unit among all properties in the Trust based on their relative fair market values. However, a corporate Unit holder that acquired Units in the distribution from Sabine must determine its tax basis in each separate property in the Trust at the time of the distribution by reference to Sabine’s tax basis in each separate property included in the distribution. The cost depletion deduction attributable to each separate property is calculated for a taxable year by multiplying the tax basis of the property times the appropriate factor reported herein. The

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factors are derived by dividing total estimated equivalent units of production (barrels of oil and MCF’s of gas) expected to be recovered from the property as of the beginning of the taxable year by the number of equivalent units produced and sold from such property during the taxable year. The resulting deduction for cost depletion cannot exceed the adjusted tax basis in the property. The composite depletion factors presented herein were derived in a manner that encompasses this separate property concept.

Percentage Depletion

The Revenue Reconciliation Act of 1990 repealed the rules denying percentage depletion to a transferee of a proven oil or gas property for transfers after October 11, 1990. Since substantially all of the properties were “proven properties” on the date of the original distribution, the percentage depletion deduction has limited applicability to Unit holders who became Unit holders prior to October 12, 1990.

A computation of percentage depletion has been made with respect to the post October 11, 1990 transfers. For some Unit holders, percentage depletion may exceed cost depletion. In such case, a Unit holder is entitled to a percentage depletion deduction in lieu of a cost depletion deduction. Percentage depletion will continue to be computed and compared to cost depletion on an annual basis for applicable transfers occurring after October 11, 1990.

Adjustment to Basis

Each Unit holder should reduce his tax basis (but not below zero) in the Properties (and correspondingly, his Units) by the amount of cost depletion and percentage depletion allowable with respect to the Properties and by the amount of any return of capital.

Non-Passive Activity Income, Credits and Loss

The income and expenses of the Trust will not be taken into account in computing the passive activity losses and income under Section 469 of the Code for a Unit holder who acquires and holds Units as an investment and not in the ordinary course of a trade or business.

Revenue/Expense and Depletion Calculators

For your convenience, simple revenue/expense and cost depletion calculators are now available on the Sabine Royalty Trust website at: www.sbr-sabineroyalty.com, on both the “Home” page and the “Tax Information” page.

Nonresident Foreign Unit Holders

Nonresident alien individual and foreign corporation Unit holders (“Foreign Taxpayer(s)”), in general, are subject to tax on the gross income attributable to the Trust at a rate equal to 30 percent (or the lower rate under any applicable treaty) without any deductions. This 30 percent tax applies to U.S. source income that is not effectively connected with a U.S. trade or business. Different tax rates and rules apply to income effectively connected with a U.S. trade or business, and those rules are not discussed herein. The 30 percent tax is withheld by the Trust and remitted directly to the United States Treasury. Foreign Taxpayers who have had tax withheld in 2011 should have received a Form 1042-S from the Trust. The Form 1042-S will reflect the total federal income tax withheld from distributions. To avoid double inclusion, the amount reported on the Form 1042-S should not be included as additional income in computing taxable income, as such amount is already included in the per Unit income items on the income and expense schedules. The federal income tax withheld, as reported on the Form 1042-S, should be considered as a credit by the Unit holder in computing any federal income tax liability.

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A Foreign Taxpayer holding income producing real property may elect to treat the income from such real property as effectively connected with the conduct of a United States trade or business. As discussed above, different tax rates and rules apply to Foreign Taxpayers with income effectively connected with a U.S. trade or business and those rules are not discussed in detail herein. The income attributable to the Properties is considered income produced from real property. Therefore, this election should be available to Foreign Taxpayers with respect to the taxable income resulting from the ownership of Units. A Unit holder so electing is entitled to claim all deductions with respect to such income but must file a United States income tax return to claim such deductions. In the case of a Foreign Taxpayer that is a foreign corporation, a “branch profits tax” may be imposed at a 30 percent rate (or a lower rate under an applicable treaty). This election, once made, is generally irrevocable unless an application for revocation is approved by the Internal Revenue Service or an applicable treaty allows the election to be made periodically.

Pursuant to the Foreign Investment in Real Property Tax Act of 1980, as amended (“FIRPTA”), a foreign taxpayer is subject to U.S. income tax with respect to the sale, transfer, or disposition of a United States real property interest. FIRPTA generally treats interests in trusts owning United States real property as United States real property interests. However, Foreign Taxpayers with a 5% or less interest in the Trust are not considered to hold U.S. real property interests with respect to the Units since the Units are publicly traded. If the FIRPTA provisions apply because a Foreign Taxpayer holds a greater than 5% interest in the Trust, income tax is required to be withheld from any proceeds distributed to Foreign Taxpayers at the rate of 10% of the amount realized by Foreign Taxpayers upon the sale, exchange or other disposition of a Unit. In addition, distributions, if any, that represent the Foreign Taxpayer’s allocable share of gain realized upon the sale, exchange or other disposition of United States real property interest by the Trust will generally be subject to withholding tax at a 35% rate. The federal income tax withheld under FIRPTA should be considered a credit by the Foreign Taxpayer in computing any federal income tax liabilities.

In order to avoid withholding under FIRPTA, Foreign Taxpayers will be required to furnish the applicable withholding agent with an exemption certificate certifying why such withholding is not required.

Foreign Taxpayers are encouraged to consult their own tax advisors concerning the tax consequences of their investment in the Trust.

Sale or Exchange of Units

Generally, a Unit holder realizes gain or loss upon the sale or exchange of any Unit measured by the difference between the amount realized from the sale or exchange and the adjusted tax basis of such Unit. The adjusted tax basis of a Unit is the original basis of such Unit reduced by depletion deductions allowable (whether deducted or not) with respect to such Unit and by any purchase price adjustment that constitutes a return of capital. Trust income allocable to such Unit to the date of sale is taxable to the selling Unit holder. The purchaser of a Unit is taxable on Trust income allocable to such Unit from the date of purchase forward. For federal income tax purposes, Trust income should generally be allocable only to the holder of record of a Unit on each Monthly Record Date.

For federal income tax purposes, the sale of a Unit will be treated as a sale by a Unit holder of his interest in a royalty interest. Gain or loss on the sale of Units by a Unit holder who is not a dealer with respect to such Units and who has a holding period for the Units of more than one year will be treated as long-term capital gain or loss except to the extent of the depletion recapture amount. The depletion recapture amount is ordinary income and equals the lesser of (1) the gain on such sale attributable to the disposition of the royalty interest, or (2) the sum of the prior depletion deductions taken with respect to the royalty interests (but not in excess of the initial basis of such Units allocated to the royalty interests).

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Backup Withholding

A payor is required under specified circumstances to withhold tax at the rate of 28 percent on “reportable interest or dividend payments” and “other reportable payments” (including certain oil and gas royalty payments). Generally, this “backup withholding” is required on payments if the payee has failed to furnish the payor a taxpayer identification number or if the payor is notified by the Secretary of the Treasury to withhold taxes on such payments with respect to the payee.

Amounts withheld by payors pursuant to the backup withholding provisions are remitted to the Internal Revenue Service and are considered a credit against the payee’s federal income tax liability. If the payee does not incur a federal income tax liability for the year in which the taxes are withheld, the payee will be required to file the appropriate income tax return to claim a refund of the taxes withheld.

State Tax

Unit holders may be required to file state tax returns and may be liable for state tax as a result of their ownership of Trust Units. The Properties are located in Florida, Louisiana, Mississippi, New Mexico, Oklahoma and Texas. The tax information included in this booklet is presented in a manner to enable Unit holders to compute the income and deductions of the Trust attributable to each of these states. Unit holders will need this information to comply with the state tax filing requirements in those states imposing a tax. The laws pertaining to tax in any given state may vary from those of another state and from those applicable to federal income tax. Accordingly, Unit holders should consult their own tax advisors concerning state tax compliance matters relating to ownership of Units.

The Trustee has been informed that certain states have contacted Unit holders regarding underpayments of the state tax imposed on the Unit holders’ income from the Trust. Failure by Unit holders to report their state tax liability properly could result in the direct withholding of state taxes from Trust distributions. Accordingly, Unit holders are urged to review carefully the various filing requirements of the states in which the Properties are located to determine if a state tax liability exists as a result of the ownership of Units in the Trust.

Florida does not have a personal income tax. Florida imposes an income tax on resident and nonresident corporations (except for S corporations not subject to the built-in-gains tax or passive investment income tax), which will be applicable to royalty income allocable to a corporate Unit holder from Properties located within Florida.

Louisiana, Mississippi, New Mexico, and Oklahoma each impose taxes applicable to both resident and nonresident individuals and/or corporations (subject to certain exceptions for S corporations and limited liability companies, depending on their treatment for federal tax purposes), which will be applicable to royalty income allocable to a Unit holder from Properties located within those states. Even though there are variances from state to state, taxable income for state tax purposes is often computed in a manner similar to the computation of taxable income for federal income tax purposes.

New Mexico and Oklahoma impose a withholding tax on payments of oil and gas proceeds derived from royalty interests. To reduce the administrative burden imposed by these rules, the Trustee has opted to allow the payors of oil and gas proceeds to withhold on royalty payments made to the Trust. The Trust will then file New Mexico and Oklahoma tax returns, obtain a refund, and distribute that refund to Unit holders. Unit holders who transfer their Units before either the New Mexico or Oklahoma tax refunds are received by the Trust or after the refunds are received but before the next Monthly Record Date will not receive any portion of the refund. As a result, such Unit holders may incur a double tax — first, through the reduced distribution received from the Trust as withholding at the Trust level reduces the amount of cash available for distribution; and second, by the tax payment made directly to New Mexico or Oklahoma with the filing of their New Mexico or Oklahoma income tax returns.

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Texas imposes a franchise tax on generally all entity types providing limited liability protection at a rate of 1% on gross revenues less certain deductions, as specifically set forth in the Texas franchise tax statute. Entities subject to tax generally include trusts unless otherwise exempt. Trusts that receive at least 90% of their federal gross income from designated passive sources, including royalties from mineral properties and other non-operated mineral interest income, and that do not receive more than 10% of their income from operating an active trade or business generally are exempt from the Texas franchise tax as “passive entities.” The Trust should be exempt from Texas franchise tax as a passive entity. Because the Trust should be exempt from Texas franchise tax at the Trust level as a passive entity, each Unit holder that is considered a taxable entity under the Texas franchise tax will generally be required to include its portion of Trust revenues in its own Texas franchise tax computation. This revenue is sourced to Texas under provisions of the Texas Administrative Code sourcing such income according to the principal place of business of the Trust, which is Texas.

All states have not adopted federal law with respect to the percentage method of computing depletion nor are such methods consistent among the various states. It should be noted, however, that cost depletion generally is allowed by those states in which the properties are located (Unit holders should note that a special depletion rule applies in Oklahoma). Information is included previously within this booklet to assist you in determining the respective allowable cost depletion deductions by state.

Unit holders should consult their own tax advisors concerning the type of state tax returns that may be required and their applicable due dates.

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Following is a list of names and addresses of the various state taxing authorities from which you may obtain additional information:

Florida |  |  |  | Florida Department of Revenue 5050 W. Tennessee Street Tallahassee, Florida 32399-0100 (800) 352-3671 www.myflorida.com/dor/taxes
New Mexico |  | Individuals: |  | State of New Mexico
|  |  |  | Taxation and Revenue Department
|  |  |  | 1100 South Saint Francis Drive
|  |  |  | P.O. Box 630
|  |  |  | Santa Fe, New Mexico 87504-0630
|  |  |  | (505) 827-0700, (505) 827-0822
|  |  |  | www.tax.state.nm.us
|  | Corporations: |  | New Mexico Taxation and Revenue Department
|  |  |  | Attention: Corporate Income and Franchise Tax
|  |  |  | P.O Box 25127
|  |  |  | Santa Fe, New Mexico 87504-5127
|  |  |  | (505) 827-0825
|  |  |  | www.tax.state.nm.us
Mississippi |  |  |  | Mississippi Department of Revenue
|  |  |  | P.O. Box 1033
|  |  |  | Jackson, Mississippi 39215-1033
|  |  |  | (601) 923-7000
|  |  |  | www.dor.ms.gov
Louisiana |  | Individuals: |  | Department of Revenue and Taxation
|  |  |  | State of Louisiana
|  |  |  | P.O Box 201
|  |  |  | Baton Rouge, Louisiana 70821
|  |  |  | (225) 219-0102
|  |  |  | www.rev.state.la.us
|  | Corporations: |  | Secretary of Revenue and Taxation
|  |  |  | State of Louisiana
|  |  |  | P.O. Box 201
|  |  |  | Baton Rouge, Louisiana 70821
|  |  |  | (225) 219-7462
|  |  |  | www.rev.state.la.us
Oklahoma |  | Individuals: |  | Oklahoma Tax Commission
|  |  |  | P.O. Box 26800
|  |  |  | Oklahoma City, OK 73126-0800
|  |  |  | (405) 521-3160
|  |  |  | www.oktax.state.ok.us
|  | Corporations: |  | Oklahoma Tax Commission
|  |  |  | P.O. Box 26800
|  |  |  | Oklahoma City, Oklahoma 73126-0800
|  |  |  | (405) 521-3126
|  |  |  | www.oktax.state.ok.us
Texas |  |  |  | Texas Comptroller of Public Accounts
|  |  |  | P.O. Box 13528, Capitol Station
|  |  |  | Austin, Texas 78711-3528
|  |  |  | (800) 252-5555
|  |  |  | www.window.state.tx.us

(SRT 2011 TAX)

A-7

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TAX INFORMATION

2011

Sabine Royalty Trust

P.O. Box 830650

Dallas, Texas 75283-0650

U.S. Trust, Bank of America Private Wealth Management, Trustee

1-800-365-6541

fax 214-209-2431

www.sbr-sabineroyalty.com