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Income Taxes | 9 Months Ended
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Sep. 30, 2025
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes Effective Tax Rate The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2025 |  | 2024 |  | 2025 |  | 2024
Edison International: |  |  |  |  |  |  |
Income from operations before income taxes | $ | 1,063 |  |  | $ | 645 |  |  | $ | 3,387 |  |  | $ | 1,152 |
Provision for income tax at federal statutory rate of 21% | 223 |  |  | 136 |  |  | 711 |  |  | 242 |
Increase (decrease) in income tax from: |  |  |  |  |  |  |
State tax, net of federal tax effect | 43 |  |  | 12 |  |  | 134 |  |  | (18) |
Property-related | (72) |  |  | (78) |  |  | (198) |  |  | (195) |
Other | (19) |  |  | (2) |  |  | (38) |  |  | (15) |
Total income tax expense | $ | 175 |  |  | $ | 68 |  |  | $ | 609 |  |  | $ | 14 |
Effective tax rate | 16.5% |  | 10.5 | % |  | 18.0 | % |  | 1.2 | %
SCE: |  |  |  |  |  |  |
Income from operations before income taxes | $ | 1,162 |  |  | $ | 736 |  |  | $ | 3,741 |  |  | $ | 1,413 |
Provision for income tax at federal statutory rate of 21% | 244 |  |  | 155 |  |  | 786 |  |  | 297 |
Increase (decrease) in income tax from: |  |  |  |  |  |  |
State tax, net of federal tax effect | 50 |  |  | 18 |  |  | 156 |  |  | — |
Property-related | (72) |  |  | (78) |  |  | (198) |  |  | (195) |
Other | (19) |  |  | — |  |  | (39) |  |  | (8) |
Total income tax expense | $ | 203 |  |  | $ | 95 |  |  | $ | 705 |  |  | $ | 94 |
Effective tax rate | 17.5 | % |  | 12.9 | % |  | 18.8 | % |  | 6.7 | %
The CPUC requires flow-through ratemaking treatment for the current tax benefit arising from certain property-related and other temporary differences which reverse over time. Flow-through items reduce current authorized revenue requirement in SCE's rate cases and result in a regulatory asset for recovery of deferred income taxes in future periods. The difference between the authorized amounts as determined in SCE's rate cases, adjusted for balancing and memorandum account activities, and the recorded flow-through items also result in increases or decreases in regulatory assets with a corresponding impact on the effective tax rate to the extent that recorded deferred amounts are expected to be recovered in future rates. For further information, see Note 11. Under the IRA, SCE generated investment tax credits of approximately $231 million in 2024 related to utility owned storage projects and $29 million in nuclear production tax credits. In the third quarter of 2025, SCE monetized the majority of these credits for $236 million. SCE expects to pass the proceeds, net of transaction fees, back to customers. Tax Disputes The tax years that remain open for examination by the IRS and the California Franchise Tax Board are 2021 – 2023, and 2013 – 2018 & 2020 – 2023, respectively.

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