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INCOME TAXES: Income Taxes Level 3 (Tables)
12 Months Ended
Dec. 31, 2020
Income Taxes [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation A reconciliation between the statutory federal income tax rate and the effective tax rate is as follows:
 IDACORPIdaho Power
 202020192018202020192018
(thousands of dollars)
Federal income tax expense at statutory rate$55,885 $54,046 $51,279 $55,394 $53,099 $50,536 
Change in taxes resulting from:     
AFUDC(8,637)(7,941)(7,246)(8,637)(7,941)(7,246)
Capitalized interest1,044 976 928 1,044 976 928 
Investment tax credits(2,906)(6,252)(2,929)(2,906)(6,252)(2,929)
Removal costs(3,148)(3,139)(3,471)(3,148)(3,139)(3,471)
Capitalized overhead costs(7,560)(7,140)(6,720)(7,560)(7,140)(6,720)
Capitalized repair costs(18,480)(18,480)(17,850)(18,480)(18,480)(17,850)
Bond redemption costs(726)— (1,029)(726)— (1,029)
Remeasurement of deferred taxes— — (5,411)— — (5,664)
State income taxes, net of federal benefit8,804 8,627 8,512 9,052 8,401 8,532 
Depreciation13,589 14,641 13,110 13,589 14,641 13,110 
Excess deferred income tax reversal(4,885)(6,181)(7,289)(4,885)(6,181)(7,289)
Income tax return adjustments(2,552)745 (5,076)(2,508)993 (4,968)
Affordable housing tax credits(5,315)(2,874)(2,560)— — — 
Affordable housing investment distributions(13)(3,232)(267)— — — 
Affordable housing investment amortization3,754 1,825 1,519 — — — 
Other, net(154)(1,114)1,886 319 (560)2,372 
Total income tax expense$28,700 $24,507 $17,386 $30,548 $28,417 $18,312 
Effective tax rate10.8%9.5%7.1%11.6%11.2%7.6%
Schedule of Components of Income Tax Expense
The items comprising income tax expense are as follows:
 IDACORPIdaho Power
 202020192018202020192018
(thousands of dollars)
Income taxes current:      
Federal$7,800 $8,830 $5,390 $30,464 $25,338 $24,919 
State3,215 4,865 3,328 6,409 (4,392)(2,049)
Total11,015 13,695 8,718 36,873 20,946 22,870 
Income taxes deferred:      
Federal11,543 9,486 1,649 (4,905)(4,599)(15,388)
State(1,414)1,159 30 (4,241)10,054 5,425 
Total10,129 10,645 1,679 (9,146)5,455 (9,963)
Investment tax credits:      
Deferred5,727 8,268 8,334 5,727 8,268 8,334 
Restored(2,906)(6,252)(2,929)(2,906)(6,252)(2,929)
Total2,821 2,016 5,405 2,821 2,016 5,405 
Affordable housing investments4,735 (1,849)1,584 — — — 
Total income tax expense$28,700 $24,507 $17,386 $30,548 $28,417 $18,312 
Schedule of Deferred Tax Assets and Liabilities
The components of the net deferred tax liability are as follows:
 IDACORPIdaho Power
 2020201920202019
 (thousands of dollars)
Deferred tax assets:    
Regulatory liabilities$95,883 $96,599 $95,883 $96,599 
Deferred compensation22,576 21,946 22,576 21,946 
Deferred revenue43,525 39,039 43,525 39,039 
Tax credits61,707 76,125 30,215 24,489 
Partnership investments10,189 7,911 7,211 4,912 
Retirement benefits142,864 114,124 142,864 114,124 
Other15,005 11,347 14,792 11,107 
Total391,749 367,091 357,066 312,216 
Deferred tax liabilities:  
Property, plant and equipment282,983 286,583 282,983 286,583 
Regulatory assets687,628 646,886 687,628 646,886 
Partnership investments3,257 3,565 — — 
Retirement benefits164,399 132,764 164,399 132,764 
Other53,733 43,524 51,202 40,385 
Total1,192,000 1,113,322 1,186,212 1,106,618 
Net deferred tax liabilities$800,251 $746,231 $829,146 $794,402