| Reconciliation of Federal Statutory Tax Rate to Reported Tax Rate |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, 2023 | AEP | | AEP Texas | | AEPTCo | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | (in millions) | | Net Income | $ | 2,212.6 | | | $ | 370.4 | | | $ | 614.2 | | | $ | 294.4 | | | $ | 335.9 | | | $ | 328.2 | | | $ | 208.8 | | | $ | 223.8 | | | Less: Equity Earnings | (1.4) | | | — | | | — | | | — | | | — | | | — | | | — | | | (1.4) | | | Income Tax Expense (Benefit) | 54.6 | | | 85.9 | | | 147.1 | | | 14.2 | | | 58.6 | | | 54.3 | | | (53.6) | | | (33.3) | | | Pretax Income | $ | 2,265.8 | | | $ | 456.3 | | | $ | 761.3 | | | $ | 308.6 | | | $ | 394.5 | | | $ | 382.5 | | | $ | 155.2 | | | $ | 189.1 | | | | | | | | | | | | | | | | | | Income Taxes on Pretax Income at Statutory Rate (21%) | $ | 475.8 | | | $ | 95.8 | | | $ | 159.9 | | | $ | 64.8 | | | $ | 82.8 | | | $ | 80.3 | | | $ | 32.6 | | | $ | 39.7 | | | Increase (Decrease) in Income Taxes Resulting from the Following Items: | | | | | | | | | | | | | | | | | Reversal of Origination Flow-Through | 26.0 | | | 0.6 | | | 2.4 | | | 9.9 | | | 6.4 | | | 2.6 | | | 0.4 | | | 2.1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Investment Tax Credit Amortization | (50.3) | | | (0.7) | | | — | | | — | | | (1.6) | | | — | | | (1.4) | | | (0.2) | | | Production Tax Credits | (175.2) | | | — | | | — | | | (0.1) | | | — | | | — | | | (64.3) | | | (67.1) | | | State and Local Income Taxes, Net | 43.7 | | | 2.1 | | | 0.7 | | | 9.9 | | | 17.5 | | | 3.9 | | | 3.5 | | | (4.0) | | | Removal Costs | (22.0) | | | — | | | — | | | (5.1) | | | (11.8) | | | — | | | — | | | — | | | AFUDC | (39.8) | | | (6.0) | | | (17.5) | | | (5.5) | | | (2.3) | | | (3.6) | | | (1.8) | | | (2.4) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tax Reform Excess ADIT Reversal | (151.1) | | | (6.0) | | | 1.7 | | | (17.3) | | | (30.0) | | | (28.9) | | | (23.3) | | | (12.6) | | | Remeasurement of Excess ADIT | (46.0) | | | — | | | — | | | (46.0) | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | Federal Return to Provision | — | | | (0.1) | | | — | | | 3.4 | | | (2.5) | | | (0.4) | | | 0.6 | | | 1.0 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Disallowance Cost | — | | | — | | | — | | | — | | | — | | | — | | | — | | | 12.0 | | | Other | (6.5) | | | 0.2 | | | (0.1) | | | 0.2 | | | 0.1 | | | 0.4 | | | 0.1 | | | (1.8) | | | Income Tax Expense (Benefit) | $ | 54.6 | | | $ | 85.9 | | | $ | 147.1 | | | $ | 14.2 | | | $ | 58.6 | | | $ | 54.3 | | | $ | (53.6) | | | $ | (33.3) | | | | | | | | | | | | | | | | | | | Effective Income Tax Rate | 2.4 | | % | | 18.8 | | % | | 19.3 | | % | | 4.6 | | % | | 14.9 | | % | | 14.2 | | % | | (34.5) | | % | | (17.6) | | % |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, 2022 | AEP | | AEP Texas | | AEPTCo | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | (in millions) | | Net Income | $ | 2,305.6 | | | $ | 307.9 | | | $ | 594.2 | | | $ | 394.2 | | | $ | 324.7 | | | $ | 287.8 | | | $ | 167.6 | | | $ | 294.3 | | | Less: Equity Earnings | (1.4) | | | — | | | — | | | — | | | — | | | (0.6) | | | — | | | (1.4) | | | Income Tax Expense (Benefit) | 5.4 | | | 72.6 | | | 169.1 | | | 18.2 | | | 4.2 | | | 44.2 | | | (49.2) | | | (25.2) | | | Pretax Income | $ | 2,309.6 | | | $ | 380.5 | | | $ | 763.3 | | | $ | 412.4 | | | $ | 328.9 | | | $ | 331.4 | | | $ | 118.4 | | | $ | 267.7 | | | | | | | | | | | | | | | | | | Income Taxes on Pretax Income at Statutory Rate (21%) | $ | 485.0 | | | $ | 79.9 | | | $ | 160.3 | | | $ | 86.6 | | | $ | 69.1 | | | $ | 69.6 | | | $ | 24.9 | | | $ | 56.2 | | | Increase (Decrease) in Income Taxes Resulting from the Following Items: | | | | | | | | | | | | | | | | | Reversal of Origination Flow-Through | 17.1 | | | — | | | — | | | 4.7 | | | 2.9 | | | 3.0 | | | — | | | 2.3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Investment Tax Credit Amortization | (14.3) | | | — | | | — | | | — | | | (3.1) | | | — | | | (1.6) | | | — | | | Production Tax Credits | (197.1) | | | — | | | — | | | — | | | — | | | — | | | (47.7) | | | (57.1) | | | State and Local Income Taxes, Net | (14.0) | | | 1.7 | | | 19.8 | | | (5.9) | | | 9.6 | | | (1.6) | | | 4.3 | | | (4.9) | | | Removal Costs | (26.5) | | | — | | | — | | | (9.8) | | | (12.4) | | | — | | | — | | | — | | | AFUDC | (29.3) | | | (4.1) | | | (14.8) | | | (3.7) | | | (2.1) | | | (2.9) | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tax Reform Excess ADIT Reversal | (214.5) | | | (5.5) | | | — | | | (50.9) | | | (54.0) | | | (27.5) | | | (25.4) | | | (14.8) | | | | | | | | | | | | | | | | | | | Federal Return to Provision | (17.4) | | | — | | | — | | | (2.8) | | | (6.2) | | | 3.5 | | | (3.7) | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other | 16.4 | | | 0.6 | | | 3.8 | | | — | | | 0.4 | | | 0.1 | | | — | | | (6.9) | | | Income Tax Expense (Benefit) | $ | 5.4 | | | $ | 72.6 | | | $ | 169.1 | | | $ | 18.2 | | | $ | 4.2 | | | $ | 44.2 | | | $ | (49.2) | | | $ | (25.2) | | | | | | | | | | | | | | | | | | | Effective Income Tax Rate | 0.2 | | % | | 19.1 | | % | | 22.2 | | % | | 4.4 | | % | | 1.3 | | % | | 13.3 | | % | | (41.6) | | % | | (9.4) | | % |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, 2021 | AEP | | AEP Texas | | AEPTCo | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | (in millions) | | Net Income | $ | 2,488.1 | | | $ | 289.8 | | | $ | 591.7 | | | $ | 348.9 | | | $ | 279.8 | | | $ | 253.6 | | | $ | 141.1 | | | $ | 242.1 | | | Less: Equity Earnings | (3.4) | | | — | | | — | | | — | | | — | | | — | | | — | | | (3.4) | | | Income Tax Expense (Benefit) | 115.5 | | | 43.1 | | | 144.1 | | | 22.1 | | | (10.6) | | | 34.4 | | | 4.1 | | | (0.6) | | | Pretax Income | $ | 2,600.2 | | | $ | 332.9 | | | $ | 735.8 | | | $ | 371.0 | | | $ | 269.2 | | | $ | 288.0 | | | $ | 145.2 | | | $ | 238.1 | | | | | | | | | | | | | | | | | | Income Taxes on Pretax Income at Statutory Rate (21%) | $ | 546.0 | | | $ | 69.9 | | | $ | 154.5 | | | $ | 77.9 | | | $ | 56.5 | | | $ | 60.5 | | | $ | 30.5 | | | $ | 50.0 | | | Increase (Decrease) in Income Taxes Resulting from the Following Items: | | | | | | | | | | | | | | | | | Reversal of Origination Flow-Through | 25.9 | | | — | | | — | | | 11.7 | | | 3.5 | | | 2.2 | | | — | | | 1.8 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Investment Tax Credit Amortization | (22.0) | | | — | | | — | | | — | | | (6.4) | | | — | | | (1.8) | | | — | | | Production Tax Credits | (98.8) | | | — | | | — | | | — | | | — | | | — | | | (6.0) | | | (7.2) | | | State and Local Income Taxes, Net | 39.4 | | | 2.4 | | | 19.8 | | | 2.1 | | | (1.3) | | | — | | | 6.4 | | | (8.0) | | | Removal Costs | (20.0) | | | — | | | — | | | (7.3) | | | (9.7) | | | — | | | — | | | — | | | AFUDC | (30.6) | | | (4.5) | | | (14.1) | | | (4.6) | | | (2.7) | | | (2.3) | | | — | | | — | | | Parent Company Loss Benefit | — | | | (3.2) | | | (18.3) | | | — | | | (2.8) | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tax Adjustments (a) | (55.1) | | | — | | | — | | | 4.5 | | | — | | | 8.9 | | | — | | | — | | | Tax Reform Excess ADIT Reversal | (255.6) | | | (21.3) | | | — | | | (60.5) | | | (46.3) | | | (32.6) | | | (25.4) | | | (31.1) | | | | | | | | | | | | | | | | | | | Federal Return to Provision | (1.6) | | | — | | | — | | | (1.6) | | | (0.6) | | | (1.2) | | | 0.7 | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other | (12.1) | | | (0.2) | | | 2.2 | | | (0.1) | | | (0.8) | | | (1.1) | | | (0.3) | | | (6.1) | | | Income Tax Expense (Benefit) | $ | 115.5 | | | $ | 43.1 | | | $ | 144.1 | | | $ | 22.1 | | | $ | (10.6) | | | $ | 34.4 | | | $ | 4.1 | | | $ | (0.6) | | | | | | | | | | | | | | | | | | | Effective Income Tax Rate | 4.4 | | % | | 12.9 | | % | | 19.6 | | % | | 6.0 | | % | | (3.9) | | % | | 11.9 | | % | | 2.8 | | % | | (0.3) | | |
(a)2021 amount represents an out of period adjustment related to Deferred Income Taxes and Income Tax Expense (Benefit). Management concluded the misstatement and subsequent correction was not material to the 2021 or prior period financial statements.
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| Reconciliation of Significant Temporary Differences |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, 2023 | AEP | | AEP Texas | | AEPTCo | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | (in millions) | | Deferred Tax Assets | $ | 3,216.1 | | | $ | 173.6 | | | $ | 188.1 | | | $ | 473.0 | | | $ | 1,014.1 | | | $ | 271.4 | | | $ | 282.3 | | | $ | 441.5 | | | Deferred Tax Liabilities | (12,631.8) | | | (1,401.4) | | | (1,335.8) | | | (2,484.9) | | | (2,184.0) | | | (1,424.1) | | | (1,113.5) | | | (1,620.8) | | | Net Deferred Tax Liabilities | $ | (9,415.7) | | | $ | (1,227.8) | | | $ | (1,147.7) | | | $ | (2,011.9) | | | $ | (1,169.9) | | | $ | (1,152.7) | | | $ | (831.2) | | | $ | (1,179.3) | | | | | | | | | | | | | | | | | | | Property Related Temporary Differences | $ | (7,779.7) | | | $(1,227.1) | | $(1,134.6) | | $(1,556.0) | | $ | (298.1) | | | $(1,162.1) | | $ | (817.2) | | | $ | (1,087.2) | | | Amounts Due to Customers for Future Income Taxes | 900.1 | | | 109.3 | | | 119.0 | | | 143.4 | | | 103.2 | | | 104.5 | | | 88.6 | | | 142.5 | | | Deferred State Income Taxes | (1,222.8) | | | (41.5) | | | (155.4) | | | (308.4) | | | (238.1) | | | (68.8) | | | (122.6) | | | (238.6) | | | | | | | | | | | | | | | | | | | Securitized Assets | (79.9) | | | (45.6) | | | — | | | (29.2) | | | — | | | (5.1) | | | — | | | — | | | | | | | | | | | | | | | | | | | Regulatory Assets | (768.9) | | | (57.6) | | | (7.6) | | | (257.4) | | | 32.3 | | | (83.5) | | | (83.8) | | | (143.4) | | | Accrued Nuclear Decommissioning | (776.5) | | | — | | | — | | | — | | | (776.5) | | | — | | | — | | | — | | | Net Operating Loss Carryforward | 148.0 | | | — | | | 3.9 | | | — | | | — | | | 2.6 | | | 25.3 | | | 47.5 | | | Tax Credit Carryforward | 321.9 | | | 13.7 | | | — | | | 0.1 | | | 7.2 | | | 41.0 | | | 53.8 | | | 68.6 | | | Operating Lease Liability | 131.1 | | | 16.6 | | | 0.3 | | | 15.1 | | | 10.8 | | | 14.6 | | | 23.6 | | | 26.3 | | | Investment in Partnership | (293.1) | | | — | | | — | | | (0.1) | | | — | | | (0.7) | | | — | | | (1.3) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All Other, Net | 4.1 | | | 4.4 | | | 26.7 | | | (19.4) | | | (10.7) | | | 4.8 | | | 1.1 | | | 6.3 | | | Net Deferred Tax Liabilities | $ | (9,415.7) | | | $ | (1,227.8) | | | $ | (1,147.7) | | | $ | (2,011.9) | | | $ | (1,169.9) | | | $ | (1,152.7) | | | $ | (831.2) | | | $ | (1,179.3) | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, 2022 | AEP | | AEP Texas | | AEPTCo | | APCo | | I&M | | OPCo | | PSO | | SWEPCo | | (in millions) | | Deferred Tax Assets | $ | 3,567.4 | | | $ | 177.0 | | | $ | 165.0 | | | $ | 510.3 | | | $ | 933.7 | | | $ | 218.8 | | | $ | 225.0 | | | $ | 374.9 | | | Deferred Tax Liabilities | (12,464.3) | | | (1,321.2) | | | (1,221.5) | | | (2,502.5) | | | (2,090.7) | | | (1,319.9) | | | (1,013.6) | | | (1,464.6) | | | Net Deferred Tax Liabilities | $ | (8,896.9) | | | $ | (1,144.2) | | | $ | (1,056.5) | | | $ | (1,992.2) | | | $ | (1,157.0) | | | $ | (1,101.1) | | | $ | (788.6) | | | $ | (1,089.7) | | | | | | | | | | | | | | | | | | | Property Related Temporary Differences | $ | (7,788.1) | | | $ | (1,130.7) | | | $ | (1,081.5) | | | $ | (1,509.8) | | | $ | (398.0) | | | $ | (1,133.8) | | | $ | (763.3) | | | $ | (1,053.8) | | | Amounts Due to Customers for Future Income Taxes | 962.7 | | | 111.0 | | | 118.5 | | | 163.0 | | | 114.3 | | | 112.6 | | | 96.0 | | | 146.2 | | | Deferred State Income Taxes | (1,049.3) | | | (36.6) | | | (108.1) | | | (318.5) | | | (227.0) | | | (59.6) | | | (81.9) | | | (208.7) | | | | | | | | | | | | | | | | | | | Securitized Assets | (98.9) | | | (65.0) | | | — | | | (33.9) | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | Regulatory Assets | (865.2) | | | (48.9) | | | (1.1) | | | (301.2) | | | (29.5) | | | (57.6) | | | (140.2) | | | (114.1) | | | Accrued Nuclear Decommissioning | (632.7) | | | — | | | — | | | — | | | (632.7) | | | — | | | — | | | — | | | Net Operating Loss Carryforward | 132.4 | | | — | | | 5.5 | | | — | | | — | | | — | | | 25.8 | | | 42.7 | | | Tax Credit Carryforward | 612.0 | | | — | | | 0.2 | | | — | | | — | | | — | | | 54.3 | | | 66.0 | | | Operating Lease Liability | 142.9 | | | 20.3 | | | 0.3 | | | 15.6 | | | 13.6 | | | 15.5 | | | — | | | — | | | Investment in Partnership | (338.9) | | | — | | | — | | | — | | | — | | | — | | | — | | | — | | | Valuation Allowance | (28.2) | | | — | | | (0.1) | | | — | | | — | | | — | | | — | | | — | | | Deferred Revenues | 7.1 | | | — | | | — | | | — | | | — | | | — | | | — | | | — | | | Postretirement Benefits | 2.5 | | | — | | | — | | | — | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All Other, Net | 44.8 | | | 5.7 | | | 9.8 | | | (7.4) | | | 2.3 | | | 21.8 | | | 20.7 | | | 32.0 | | | Net Deferred Tax Liabilities | $ | (8,896.9) | | | $ | (1,144.2) | | | $ | (1,056.5) | | | $ | (1,992.2) | | | $ | (1,157.0) | | | $ | (1,101.1) | | | $ | (788.6) | | | $ | (1,089.7) | |
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