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Income Taxes | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes The provision for income taxes consists of the following:
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Current: |  |  |  |  |  |
Federal |  | $ | 151,532 |  |  | $ | 115,610 |  |  | $ | 126,358 |
State |  | 42,769 |  |  | 34,586 |  |  | 37,038 |
Deferred: |  |  |  |  |  |
Federal |  | (13,289) |  |  | (2,195) |  |  | 138 |
State |  | (4,227) |  |  | (745) |  |  | (999) |
Income tax expense |  | $ | 176,785 |  |  | $ | 147,256 |  |  | $ | 162,535 |
Deferred income taxes on our consolidated balance sheets were comprised of the following:
|  | December 31,
|  | 2020 |  | 2019
Deferred tax assets: |  |  |  |
Other accrued expenses and contract land deposit reserve |  | $ | 67,520 |  |  | $ | 52,726 |
Deferred compensation |  | 4,608 |  |  | 4,635 |
Equity-based compensation expense |  | 41,839 |  |  | 42,043 |
Inventory |  | 13,118 |  |  | 10,530 |
Unrecognized tax benefit |  | 11,705 |  |  | 12,355 |
Other |  | 8,639 |  |  | 8,289 |
Total deferred tax assets |  | 147,429 |  |  | 130,578 |
Less: Deferred tax liabilities |  | 7,184 |  |  | 7,902 |
Net deferred tax asset |  | $ | 140,245 |  |  | $ | 122,676 |
Deferred tax assets arise principally as a result of various accruals required for financial reporting purposes and equity-based compensation expense, which are not currently deductible for tax return purposes. Management believes that we will have sufficient future taxable income to make it more likely than not that the net deferred tax assets will be realized. Federal taxable income is estimated to be approximately $768,700 for the year ended December 31, 2020, and was $640,243 for the year ended December 31, 2019. A reconciliation of income taxes computed at the federal statutory rate (21%) to income tax expense is as follows:
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Income taxes computed at the federal statutory rate |  | $ | 226,387 |  |  | $ | 215,417 |  |  | $ | 201,544 |
State income taxes, net of federal income tax benefit (1) |  | 47,469 |  |  | 45,770 |  |  | 42,944 |
Excess tax benefits from equity-based compensation |  | (92,234) |  |  | (101,466) |  |  | (77,478) |
Remeasurement of net deferred tax assets due to enactment of Tax Cut and Jobs Act |  | — |  |  | — |  |  | (497) |
Other, net (2) |  | (4,837) |  |  | (12,465) |  |  | (3,978) |
Income tax expense |  | $ | 176,785 |  |  | $ | 147,256 |  |  | $ | 162,535 |
(1)Excludes state excess tax benefits from equity-based compensation included in the line below. (2) Primarily attributable to tax benefits from certain energy credits for the years ended December 31, 2020 and 2019. Our effective tax rate in 2020, 2019 and 2018 was 16.40%, 14.36% and 16.94%, respectively. We file a consolidated U.S. federal income tax return, as well as state and local tax returns in all jurisdictions where we maintain operations. With few exceptions, we are no longer subject to income tax examinations by tax authorities for years prior to 2017. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
|  | Year Ended December 31,
|  | 2020 |  | 2019
Balance at beginning of year |  | $ | 39,356 |  |  | $ | 43,418 |
Additions based on tax positions related to the current year |  | 3,155 |  |  | 2,941 |
Reductions for tax positions of prior years |  | (5,694) |  |  | (7,003) |
Settlements |  | — |  |  | — |
Balance at end of year |  | $ | 36,817 |  |  | $ | 39,356 |
If recognized, the total amount of unrecognized tax benefits that would affect the effective tax rate (net of the federal tax benefit) is $29,085 as of December 31, 2020. We recognize interest related to unrecognized tax benefits as a component of income tax expense. For the years ended December 31, 2020, 2019, and 2018, we recognized a net decrease in accrued interest on unrecognized tax benefits in the amount of $420, $1,467 and $1,384, respectively. As of December 31, 2020 and 2019, we had a total of $15,304 and $15,724, respectively, of accrued interest on unrecognized tax benefits which are included in “Accrued expenses and other liabilities” on the accompanying consolidated balance sheets. We believe that within the next 12 months, it is reasonably possible that the unrecognized tax benefits as of December 31, 2020 will be reduced by approximately $7,700 due to statute expiration and effectively settled positions in various state jurisdictions.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 + Details
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