Income Taxes

3 Months Ended

Mar. 31, 2024

Entity Information [Line Items]

Income Taxes

INCOME TAXES

DPL’s provision for income taxes is based on the estimated annual effective tax rate, plus discrete items. The effective combined state and federal income tax rates were 38.1% for the three months ended March 31, 2024

compared to 47.8% for the three months ended March 31, 2023. The year-to-date rate is different from the combined federal and state statutory rate of 22.4% primarily due to the flowthrough of the net tax benefit related to the reversal of excess deferred taxes of AES Ohio as a percentage of pre-tax book income or loss. AES Ohio began amortizing a deferred municipal tax shortage in September 2023, which partially offsets the ongoing amortization of the Tax Cut and Jobs Act (TCJA) benefit.

DPL's income tax expense for the three months ended March 31, 2024 was calculated using the estimated annual effective income tax rate for 2023 of 34.6% on ordinary income. Management estimates the annual effective tax rate based on its forecast of annual pre-tax income or loss.

AES files federal and state income tax returns, which consolidate DPL and its subsidiaries. Under a tax sharing agreement with AES, DPL is responsible for the income taxes associated with its own taxable income and records the provision for income taxes using a separate return method.

Subsidiaries [Member]

Entity Information [Line Items]

Income Taxes

INCOME TAXES

AES Ohio's provision for income taxes is based on the estimated annual effective tax rate, plus discrete items. The effective combined state and federal income tax rates were 19.7% for the three months ended March 31, 2024, compared to 11.9% for the three months ended March 31, 2023. The year-to-date rate is different from the combined federal and state statutory rate of 22.4% primarily due to the flowthrough of the net tax benefit related to the reversal of excess deferred taxes of AES Ohio as a percentage of pre-tax book income or loss. AES Ohio began amortizing a deferred municipal tax shortage in September 2023, which partially offsets the ongoing amortization of the Tax Cut and Jobs Act (TCJA) benefit.

AES files federal and state income tax returns, which consolidate AES Ohio. Under a tax sharing agreement with DPL, AES Ohio is responsible for the income taxes associated with its own taxable income and records the provision for income taxes using a separate return method.