Income Taxes (Tables)

3 Months Ended

Mar. 31, 2024

Schedule of Effective Income Tax Rate Reconciliation

	Three Months Ended March 31, 2024
	AEP		AEP Texas		AEPTCo		APCo		I&M		OPCo		PSO		SWEPCo
U.S. Federal Statutory Rate	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%
Increase (decrease) due to:
State Income Tax, net of Federal Benefit	2.1	%	0.2	%	2.6	%	2.4	%	3.9	%	1.0	%	3.7	%	1.7	%
Tax Reform Excess ADIT Reversal	(2.3)	%	(1.3)	%	0.2	%	(13.4)	%	(0.5)	%	(6.0)	%	(2.0)	%	4.6	%
Remeasurement of Excess ADIT	(29.7)	%	—	%	—	%	—	%	(58.2)	%	—	%	(263.3)	%	(224.7)	%
Production and Investment Tax Credits	(6.8)	%	(0.2)	%	—	%	(0.1)	%	(1.1)	%	—	%	(49.6)	%	(23.8)	%
Flow Through	—	%	0.1	%	0.3	%	(0.3)	%	(2.8)	%	0.6	%	0.2	%	0.6	%
AFUDC Equity	(1.2)	%	(1.5)	%	(1.8)	%	(0.4)	%	(0.7)	%	(1.0)	%	(1.3)	%	(1.3)	%
Discrete Tax Adjustments	0.2	%	—	%	—	%	—	%	—	%	—	%	0.9	%	1.3	%
Other	0.2	%	0.5	%	—	%	0.1	%	—	%	0.2	%	1.2	%	(0.8)	%
Effective Income Tax Rate	(16.5)	%	18.8	%	22.3	%	9.3	%	(38.4)	%	15.8	%	(289.2)	%	(221.4)	%

	Three Months Ended March 31, 2023
	AEP		AEP Texas		AEPTCo		APCo		I&M		OPCo		PSO		SWEPCo
U.S. Federal Statutory Rate	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%	21.0	%
Increase (decrease) due to:
State Income Tax, net of Federal Benefit	1.9	%	0.3	%	2.6	%	2.4	%	3.6	%	1.0	%	3.2	%	(0.4)	%
Tax Reform Excess ADIT Reversal	(6.2)	%	(1.5)	%	0.3	%	(4.6)	%	(7.9)	%	(6.8)	%	(18.7)	%	(3.8)	%
Production and Investment Tax Credits	(9.7)	%	(0.2)	%	—	%	—	%	(1.1)	%	—	%	(55.7)	%	(26.4)	%
Flow Through	0.1	%	0.2	%	0.3	%	0.6	%	(1.8)	%	0.5	%	0.3	%	0.5	%
AFUDC Equity	(1.4)	%	(1.5)	%	(1.6)	%	(0.7)	%	(0.5)	%	(0.8)	%	(1.4)	%	(0.8)	%
Discrete Tax Adjustments	(3.2)	%	—	%	—	%	3.2	%	1.8	%	—	%	—	%	—	%
Other	0.1	%	0.1	%	0.1	%	—	%	—	%	—	%	(2.0)	%	(0.8)	%
Effective Income Tax Rate	2.6	%	18.4	%	22.7	%	21.9	%	15.1	%	14.9	%	(53.3)	%	(10.7)	%