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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Summary of Tax Reform Adjustments | The adjustments to deferred income taxes resulting from completion of the Company’s analysis, which resulted primarily from differences between the estimated amounts recorded as of December 31, 2017 and the actual amounts reflected in the Company’s 2017 tax return filing, including adjustments resulting from additional guidance and interpretations to the Tax Act issued in 2018 related to bonus depreciation, certain incentive compensation, and other items are presented below:
|  | PNM |  | TNMP |  | Corporate and Other |  | Consolidated
|  | (In thousands)
Net increase (decrease) in regulatory liabilities |  | $ | 11,244 |  |  | $ | (4,069) |  |  | $ | — |  |  | $ | 7,175 |
Net decrease in deferred income tax liabilities (deferred income tax assets) |  | (2,175) |  |  | (9,784) |  |  | 13,869 |  |  | 1,910 |
Net increase in affiliate receivables (affiliate payables) |  | 12,300 |  |  | 4,042 |  |  | (16,342) |  |  | — |
Net deferred income tax expense |  | $ | 1,119 |  |  | $ | 1,673 |  |  | $ | 2,473 |  |  | $ | 5,265 |
Schedule of Components of Income Tax Expense (Benefit) | PNMR’s income taxes (benefits) consist of the following components:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Current federal income tax | $ | — |  |  | $ | 60 |  |  | $ | — |
Current state income tax | 231 |  |  | 43 |  |  | (244) |
Deferred federal income tax | 17,574 |  |  | (20,372) |  |  | 7,716 |
Deferred state income tax | 3,721 |  |  | (4,491) |  |  | 648 |
Amortization of accumulated investment tax credits | (890) |  |  | (522) |  |  | (345) |
Total income taxes (benefits) | $ | 20,636 |  |  | $ | (25,282) |  |  | $ | 7,775 |
PNM’s income taxes (benefit) consist of the following components:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Current federal income tax | $ | — |  |  | $ | (6,266) |  |  | $ | (6,644) |
Current state income tax | (585) |  |  | 449 |  |  | (2,661) |
Deferred federal income tax | 20,125 |  |  | (12,308) |  |  | 5,661 |
Deferred state income tax | 2,560 |  |  | (7,590) |  |  | (2,080) |
Amortization of accumulated investment tax credits | (243) |  |  | (247) |  |  | (247) |
Total income taxes (benefit) | $ | 21,857 |  |  | $ | (25,962) |  |  | $ | (5,971) |
TNMP’s income taxes consist of the following components:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Current federal income tax | $ | 12,048 |  |  | $ | 10,792 |  |  | $ | 13,347 |
Current state income tax | 2,033 |  |  | 1,904 |  |  | 1,753 |
Deferred federal income tax | (7,744) |  |  | (7,621) |  |  | (540) |
Deferred state income tax | (29) |  |  | (29) |  |  | 2,320 |
Total income taxes | $ | 6,308 |  |  | $ | 5,046 |  |  | $ | 16,880 |
Schedule of Effective Income Tax Rate Reconciliation | PNMR’s provision for income taxes (benefits) differed from the federal income tax computed at the statutory rate for each of the years shown. The differences are attributable to the following factors:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Federal income tax at statutory rates | $ | 43,670 |  |  | $ | 14,038 |  |  | $ | 22,902 |
Amortization of accumulated investment tax credits | (890) |  |  | (522) |  |  | (345) |
Amortization of excess deferred income tax (Note 17) | (30,723) |  |  | (37,799) |  |  | (19,779) |
Flow-through of depreciation items | 1,368 |  |  | 1,136 |  |  | 712 |
Earnings attributable to non-controlling interest in Valencia | (2,943) |  |  | (2,991) |  |  | (3,173) |
State income tax, net of federal benefit | 6,961 |  |  | 298 |  |  | 1,358 |
Impairment of state net operating loss carryforwards | — |  |  | — |  |  | — |
Allowance for equity funds used during construction | (2,363) |  |  | (1,990) |  |  | (2,185) |
Impairment of charitable contribution carryforward | — |  |  | — |  |  | — |
Regulatory recovery of prior year impairments of state net operating loss carryforward, including amortization | 1,367 |  |  | 1,367 |  |  | 1,367 |
Federal income tax rate change | — |  |  | — |  |  | 2,914 |
Tax expense (benefit) related to stock compensation awards | (392) |  |  | (795) |  |  | 4,647 |
Non-deductible compensation | 2,630 |  |  | 1,156 |  |  | 891 |
Other | 1,951 |  |  | 820 |  |  | (1,534) |
Total income taxes (benefits) | $ | 20,636 |  |  | $ | (25,282) |  |  | $ | 7,775 |
Effective tax rate | 9.92 | % |  | (37.82) | % |  | 7.13 | %
The differences are attributable to the following factors:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Federal income tax at statutory rates | $ | 38,193 |  |  | $ | 6,187 |  |  | $ | 13,514 |
Amortization of accumulated investment tax credits | (243) |  |  | (247) |  |  | (247) |
Amortization of excess deferred income tax (Note 17) | (21,609) |  |  | (28,923) |  |  | (19,779) |
Flow-through of depreciation items | 1,279 |  |  | 1,077 |  |  | 674 |
Earnings attributable to non-controlling interest in Valencia | (2,943) |  |  | (2,991) |  |  | (3,173) |
State income tax, net of federal benefit | 7,111 |  |  | 92 |  |  | 1,323 |
Impairment of state net operating loss carryforwards | — |  |  | — |  |  | — |
Allowance for equity funds used during construction | (1,461) |  |  | (1,398) |  |  | (1,716) |
Regulatory recovery of prior year impairment of state net operating loss carryforward, net of amortization | 1,367 |  |  | 1,367 |  |  | 1,367 |
Federal income tax rate change | — |  |  | — |  |  | (683) |
Allocation of tax expense (benefit) related to stock compensation awards | (279) |  |  | (559) |  |  | 3,967 |
Non-deductible compensation | 1,554 |  |  | 683 |  |  | 612 |
Other | (1,112) |  |  | (1,250) |  |  | (1,830) |
Total income taxes (benefit) | $ | 21,857 |  |  | $ | (25,962) |  |  | $ | (5,971) |
Effective tax rate | 12.02 | % |  | (88.13) | % |  | (9.28) | %
The differences are attributable to the following factors:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In thousands)
Federal income tax at statutory rates | $ | 13,628 |  |  | $ | 12,778 |  |  | $ | 14,379 |
Amortization of excess deferred income tax | (9,113) |  |  | (8,876) |  |  | — |
State income tax, net of federal benefit | 1,625 |  |  | 1,532 |  |  | 1,454 |
Allocation of tax expense (benefit) related to stock compensation awards | (112) |  |  | (236) |  |  | 735 |
Officer compensation | 1,071 |  |  | 471 |  |  | 277 |
Other | (791) |  |  | (623) |  |  | 35 |
Total income taxes | $ | 6,308 |  |  | $ | 5,046 |  |  | $ | 16,880 |
Effective tax rate | 9.71 | % |  | 8.29 | % |  | 24.65 | %
Components of Deferred Tax Assets and Liabilities | The components of PNMR’s net accumulated deferred income tax liability were:
| December 31,
| 2020 |  | 2019
| (In thousands)
Deferred tax assets: |  |  |
Net operating loss | $ | 41,419 |  |  | $ | 59,488 |
Regulatory liabilities related to income taxes | 148,961 |  |  | 145,087 |
Federal tax credit carryforwards | 121,354 |  |  | 101,231 |
Regulatory disallowances | 38,531 |  |  | 34,639 |
Other | 42,885 |  |  | 54,199 |
Total deferred tax assets | 393,150 |  |  | 394,644 |
Deferred tax liabilities: |  |  |
Depreciation and plant related | (738,342) |  |  | (787,928) |
Investment tax credit | (98,669) |  |  | (81,186) |
Regulatory assets related to income taxes | (61,330) |  |  | (58,495) |
CTC | — |  |  | (1,466) |
Pension | (37,099) |  |  | (35,029) |
Regulatory asset for shutdown of SJGS Units 2 and 3 | (27,237) |  |  | (28,831) |
Other | (124,985) |  |  | (27,767) |
Total deferred tax liabilities | (1,087,662) |  |  | (1,020,702) |
Net accumulated deferred income tax liabilities | $ | (694,512) |  |  | $ | (626,058) |
The components of PNM’s net accumulated deferred income tax liability were:
| December 31,
| 2020 |  | 2019
| (In thousands)
Deferred tax assets: |  |  |
Net operating loss | $ | — |  |  | $ | 25,889 |
Regulatory liabilities related to income taxes | 121,569 |  |  | 114,849 |
Federal tax credit carryforwards | 84,719 |  |  | 82,983 |
Shutdown of SJGS Units 2 and 3 | — |  |  | — |
Regulatory disallowance | 38,531 |  |  | 34,639 |
Other | 46,444 |  |  | 38,735 |
Total deferred tax assets | 291,263 |  |  | 297,095 |
Deferred tax liabilities: |  |  |
Depreciation and plant related | (576,079) |  |  | (630,293) |
Investment tax credit | (74,424) |  |  | (74,667) |
Regulatory assets related to income taxes | (51,493) |  |  | (49,479) |
Pension | (32,413) |  |  | (30,609) |
Regulatory asset for shutdown of SJGS Units 2 and 3 | (27,237) |  |  | (28,831) |
Other | (108,767) |  |  | (5,206) |
Total deferred tax liabilities | (870,413) |  |  | (819,085) |
Net accumulated deferred income tax liabilities | $ | (579,150) |  |  | $ | (521,990) |
The components of TNMP’s net accumulated deferred income tax liability at December 31, were:
| December 31,
| 2020 |  | 2019
| (In thousands)
Deferred tax assets: |  |  |
Regulatory liabilities related to income taxes | $ | 27,392 |  |  | $ | 30,238 |
Other | 4,548 |  |  | 3,788 |
Total deferred tax assets | 31,940 |  |  | 34,026 |
Deferred tax liabilities: |  |  |
Depreciation and plant related | (148,279) |  |  | (142,791) |
CTC | — |  |  | (1,466) |
Regulatory assets related to income taxes | (9,836) |  |  | (9,016) |
Loss on reacquired debt | (6,072) |  |  | (6,345) |
Pension | (4,685) |  |  | (4,420) |
AMS | (6,915) |  |  | (8,473) |
Other | (1,522) |  |  | (1,666) |
Total deferred tax liabilities | (177,309) |  |  | (174,177) |
Net accumulated deferred income tax liabilities | $ | (145,369) |  |  | $ | (140,151) |
Reconciliation of Accumulated Deferred Income Tax Liability to Deferred Income Tax Benefit | The following table reconciles the change in PNMR’s net accumulated deferred income tax liability to the deferred income tax (benefit) included in the Consolidated Statement of Earnings:
| Year Ended
| December 31, 2020
| (In thousands)
Net change in deferred income tax liability per above table | $ | 68,454 |
Change in tax effects of income tax related regulatory assets and liabilities | (11,602) |
Amortization of excess deferred income tax | (30,723) |
Tax effect of mark-to-market adjustments | (3,206) |
Tax effect of excess pension liability | (3,670) |
Adjustment for uncertain income tax positions | 2,459 |
Reclassification of unrecognized tax benefits | (2,459) |
Amortization of state net operating loss recovered in prior years | 1,367 |
Refundable alternative minimum tax credit carryforward reclassified to receivable | — |
Other | (215) |
Deferred income taxes (benefits) | $ | 20,405 |
The following table reconciles the change in PNM’s net accumulated deferred income tax liability to the deferred income tax (benefit) included in the Consolidated Statement of Earnings:
| Year Ended
| December 31, 2020
| (In thousands)
Net change in deferred income tax liability per above table | $ | 57,160 |
Change in tax effects of income tax related regulatory assets and liabilities | (7,936) |
Amortization of excess deferred income tax | (21,609) |
Tax effect of mark-to-market adjustments | (3,325) |
Tax effect of excess pension liability | (3,670) |
Adjustment for uncertain income tax positions | 2,454 |
Reclassification of unrecognized tax benefits | (1,999) |
Amortization of state net operating loss recovered in prior years | 1,367 |
Other | — |
Deferred income taxes (benefits) | $ | 22,442 |
The following table reconciles the change in TNMP’s net accumulated deferred income tax liability to the deferred income tax (benefit) included in the Consolidated Statement of Earnings:
| Year Ended
| December 31, 2020
| (In thousands)
Net change in deferred income tax liability per above table | $ | 5,218 |
Change in tax effects of income tax related regulatory assets and liabilities | (3,666) |
Amortization of excess deferred income tax | (9,113) |
Other | (212) |
Deferred income taxes (benefits) | $ | (7,773) |
Reconciliation of Unrecognized Tax Benefits (Expenses) | A reconciliation of unrecognized tax benefits is as follows:
| PNMR |  | PNM |  | TNMP
| (In thousands)
Balance at December 31, 2017 | $ | 9,429 |  |  | $ | 6,563 |  |  | $ | 63 |
Additions based on tax positions related to 2018 | 543 |  |  | 543 |  |  | — |
Additions (reductions) for tax positions of prior years | 222 |  |  | 182 |  |  | 40 |
Settlement payments | — |  |  | — |  |  | — |
Balance at December 31, 2018 | 10,194 |  |  | 7,288 |  |  | 103 |
Additions based on tax positions related to 2019 | 329 |  |  | 329 |  |  | — |
Additions (reductions) for tax positions of prior years | 170 |  |  | 159 |  |  | 11 |
Settlement payments | — |  |  | — |  |  | — |
Balance at December 31, 2019 | 10,693 |  |  | 7,776 |  |  | 114 |
Additions based on tax positions related to 2020 | 2,286 |  |  | 2,286 |  |  | — |
Additions (reductions) for tax positions of prior years | 173 |  |  | 168 |  |  | 5 |
Settlement payments | — |  |  | — |  |  | — |
Balance at December 31, 2020 | $ | 13,152 |  |  | $ | 10,230 |  |  | $ | 119 |
Tax Carryforward, Impairments, net of Federal Tax Benefit | The impairments after reflecting the expiration of carryforwards under applicable tax laws, net of federal tax benefit, for 2018 through 2020 are as follows:
| PNMR |  | PNM |  | TNMP
| (In thousands)
December 31, 2020: |  |  |  |  |
State tax credit carryforwards | $ | (425) |  |  | $ | — |  |  | $ | — |
State net operating loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Charitable contribution carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Compensation expense | $ | 96 |  |  | $ | 61 |  |  | $ | 35 |
December 31, 2019: |  |  |  |  |
State tax credit carryforwards | $ | 425 |  |  | $ | — |  |  | $ | — |
State net operating loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Charitable contribution carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Compensation expense | $ | (99) |  |  | $ | (100) |  |  | $ | 2 |
December 31, 2018: |  |  |  |  |
State tax credit carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
State net operating loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Charitable contribution carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Compensation expense | $ | 410 |  |  | $ | 298 |  |  | $ | 111 |
Summary of Tax Credit Carryforwards | The reserve balances, after reflecting expiration of carryforwards under applicable tax laws, at December 31, 2020 and 2019 are as follows:
| PNMR |  | PNM |  | TNMP
| (In thousands)
December 31, 2020: |  |  |  |  |
State tax credit carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
State net operating loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Charitable contribution carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Compensation expense | $ | 407 |  |  | $ | 259 |  |  | $ | 148 |
December 31, 2019: |  |  |  |  |
State tax credit carryforwards | $ | 425 |  |  | $ | — |  |  | $ | — |
State net operating loss carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Charitable contribution carryforwards | $ | — |  |  | $ | — |  |  | $ | — |
Compensation expense | $ | 311 |  |  | $ | 198 |  |  | $ | 113 |

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