Income Taxes
The U.S. and foreign components of Income before income tax expense are as follows:
Years Ended December 31,
202520242023
(In millions)
U.S.
$686 $129 $1,968 
Foreign
46 89 185 
Total
$732 $218 $2,153 

The provision for Income tax expense (benefit) is comprised of the following:
Years Ended December 31,
202520242023
(In millions)
Current:
Federal$123 $26 $180 
State17 12 24 
Foreign(1)45 45 
Deferred:
Federal14 (34)155 
State(10)(8)31 
Foreign(7)
Total income tax expense$146 $34 $442 
The statutory federal income tax rate applied to pre-tax book income reconciles to income tax expense as follows:
Years Ended December 31,
202520242023
Amount
Percent (2)
Amount
Percent (2)
Amount
Percent (2)
(In millions)
Tax computed at statutory rate$154 21.0 %$46 21.0 %$452 21.0 %
State income taxes, net of federal tax benefit (1)
0.7 1.4 44 2.0 
Foreign tax effects:
Canada:
     Statutory tax rate difference between Canada and U.S.
— — (5)(2.3)(11)(0.5)
     Canadian withholding taxes
0.7 2.3 0.2 
Provincial taxes
(1)(0.1)10 4.6 21 1.0 
Cyprus:
     Statutory tax rate difference between Cyprus and U.S.
(3)(0.4)(3)(1.4)(3)(0.1)
Foreign tax credit
(4)(0.5)(4)(1.8)(4)(0.2)
Netherlands:
Changes in valuation allowances
0.4 1.8 — 
Other foreign jurisdictions
(9)(1.2)0.5 0.2 
Effect of cross-border tax laws
— — 0.5 0.1 
Nontaxable or nondeductible items:
   Nontaxable renewable fuel incentives
(7)(1.0)(51)(23.4)(43)(2.0)
   Fines and penalties
— — 3.7 — — 
   Tax benefit on equity investment dividends received(4)(0.5)(3)(1.4)(2)(0.1)
   Other1.1 1.8 0.1 
   Noncontrolling interest in net income(2)(0.3)(2)(0.9)(25)(1.2)
Changes in unrecognized tax benefits
— — 20 9.2 — — 
Income tax expense
$146 19.9 %$34 15.6 %$442 20.5 %
(1)State income taxes, net of federal tax benefit largely consists of expense from New Mexico, Kansas, Oklahoma and Colorado.
(2)Due to rounding of reported numbers, some amounts may not calculate exactly.

Income taxes paid, net of refunds consist of the following:
Years Ended December 31,
202520242023
(In millions)
Federal$43 $86 $175 
State and local:
Oregon
*
10 
*
Kansas
(5)(12)
*
Other
(3)47 
Total state and local
$(1)$(5)$47 
Foreign:
Canada
11 31 28 
Other
(2)(2)
Total foreign
$$29 $29 
Income taxes paid, net of refunds
$51 $110 $251 
*    Income taxes paid, net of refunds does not meet disaggregation threshold.
Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Our deferred income tax assets and liabilities as of December 31, 2025 and 2024 are as follows:
December 31, 2025
AssetsLiabilitiesTotal
(In millions)
Deferred income taxes:
Properties, plants, equipment and intangibles (due primarily to tax in excess of book depreciation)$— $(1,183)$(1,183)
Lease obligation112 — 112 
Accrued employee benefits23 — 23 
Accrued post-retirement benefits11 — 11 
Accrued environmental costs41 — 41 
Inventory differences— (59)(59)
Deferred turnaround costs— (208)(208)
Net operating loss and tax credit carryforwards42 — 42 
Valuation allowance(10)— (10)
Other— (9)(9)
Total $219 $(1,459)$(1,240)

December 31, 2024
AssetsLiabilitiesTotal
(In millions)
Deferred income taxes:
Properties, plants, equipment and intangibles (due primarily to tax in excess of book depreciation)$— $(1,174)$(1,174)
Lease obligation114 — 114 
Accrued employee benefits22 — 22 
Accrued post-retirement benefits10 — 10 
Accrued environmental costs41 — 41 
Inventory differences— (159)(159)
Deferred turnaround costs— (185)(185)
Net operating loss and tax credit carryforwards116 — 116 
Interest Limitation under 163(j)19 — 19 
Valuation allowance(14)— (14)
Other— (14)(14)
Total $308 $(1,532)$(1,224)

We have tax benefits attributable to net operating losses of $18 million in the Netherlands that can be carried forward indefinitely and tax benefits attributable to net operating losses in Luxembourg of $14 million that can be carried forward 17 years and begin expiring in 2036. We have reflected a valuation allowance of $10 million in 2025 and $14 million in 2024 with respect to net operating carryforwards that primarily relate to losses in the Netherlands, China and Luxembourg. Additionally we have state income tax credits of $6 million that will begin expiring in 16 years.
A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:

Years Ended December 31,
202520242023
(In millions)
Balance at January 1$24 $$
   Additions for tax positions related to prior years— 23 — 
Reductions for tax positions related to prior years
(2)— — 
Balance at December 31$22 $24 $

At December 31, 2025, 2024 and 2023, there were $23 million, $24 million and $1 million, respectively, of unrecognized tax benefits that, if recognized, would affect our effective tax rate. Unrecognized tax benefits are adjusted in the period in which new information about a tax position becomes available or the final outcome differs from the amount recorded.
We are subject to U.S. and Canadian federal income tax as well as multiple other state and local jurisdictions. The Company is currently under audit with the Internal Revenue Service for the tax years 2020 and 2021, and under audit with the Canada Revenue Agency for the tax years 2018, 2019, 2020 and 2021.

Historical Timeline

Fiscal YearFiled
2025Feb 27, 2026Showing above
2024Feb 20, 2025
2023Feb 21, 2024
2022Feb 28, 2023

About Income Taxes Disclosures

The income tax disclosure reveals how much a company actually pays in taxes versus what the statutory rate would predict. Analysts focus on the effective tax rate (ETR) reconciliation, which breaks down every item driving the gap between the 21% federal rate and the company's reported ETR — including R&D credits, foreign rate differentials, and state taxes. Deferred tax assets (DTAs) and their valuation allowances signal management's confidence in future profitability: a rising allowance suggests the company doubts it can use accumulated tax benefits. Uncertain tax benefit (UTB) reserves quantify exposure to IRS challenges on aggressive positions.

Key signals to watch: sudden ETR drops without clear operational reasons, large increases in valuation allowances, growing UTB balances, and significant unremitted foreign earnings. Post-TCJA, pay attention to GILTI and BEAT provisions that affect multinational tax structures. Compare the cash taxes paid (from the cash flow statement) against the income tax provision to gauge earnings quality.