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Income Taxes
 9 Months Ended
Sep. 30, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Rate Reconciliation
The effective income tax rate varies from the U.S. federal statutory rate principally due to the following:
Three Months Ended September 30,Nine Months Ended September 30,
2024
2023
2024
2023
U.S. federal statutory rate21.0 %21.0 %21.0 %21.0 %
(Decrease) increase due to:
State income taxes, net of federal income tax benefit4.8 4.3 1.1 4.1 
Qualified NDT fund income and losses8.2 (2.6)6.6 4.7 
Amortization of ITC, including deferred taxes on basis differences(0.3)(0.5)(0.2)(0.5)
PTCs and other credits(8.1)(0.6)(8.1)(0.6)
Noncontrolling interests0.1 0.7 0.1 0.3 
Other1.6 0.6 0.5 0.4 
Effective income tax rate27.3 %22.9 %21.0 %29.4 %
Other Tax Matters
Tax Matters Agreement
In connection with the separation, we entered into a TMA with Exelon. The TMA governs the respective rights, responsibilities, and obligations between us and Exelon after the separation with respect to tax liabilities and benefits, tax attributes, tax returns, tax contests and other tax sharing regarding U.S. federal, state, local and foreign income taxes, other tax matters and related tax returns. See Note 14 — Income Taxes of our 2023 Form 10-K for additional information on the separation.
Responsibility and Indemnification for Taxes. As a former subsidiary of Exelon, we have joint and several liability with Exelon to the IRS and certain state jurisdictions relating to the taxable periods that we were included in federal and state filings. However, the TMA specifies the portion of this tax liability for which we will bear contractual responsibility, and we and Exelon agreed to indemnify each other against any amounts for which such indemnified party is not responsible. Specifically, we will be liable for taxes due and payable in connection with tax returns that we are required to file. We will also be liable for our share of certain taxes required to be paid by Exelon with respect to taxable years or periods (or portions thereof) ending on or prior to the separation to the extent that we would have been responsible for such taxes under the Exelon tax sharing agreement then existing. As of September 30, 2024 and December 31, 2023, our Consolidated Balance Sheets reflect $39 million and $37 million in Other deferred credits and other liabilities, respectively, for tax liabilities where we maintain contractual responsibility to Exelon.
Tax Refunds and Attributes. The TMA provides for the allocation of certain pre-closing tax attributes between us and Exelon. Tax attributes will be allocated in accordance with the principles set forth in the existing Exelon tax sharing agreement, unless otherwise required by law. Under the TMA, we will be entitled to refunds for taxes for which we are responsible. In addition, it is expected that Exelon will have tax attributes that may be used to offset Exelon’s future tax liabilities. A significant portion of such attributes were generated by our business. In February 2024, we executed an amendment to the TMA that modified the timing of Exelon's payment of amounts due to us. As of September 30, 2024, our Consolidated Balance Sheets reflects receivables of $130 million and $201 million in Other accounts receivable and Other deferred debits and other assets, respectively. As of December 31, 2023, our Consolidated Balance Sheets reflected receivables of $336 million and $178 million in Other accounts receivable and Other deferred debits and other assets, respectively.