Income Taxes
Income tax provision (benefit) for the years ended December 31, consists of the following (in thousands): 
202520242023
Current:
Federal$12,205 $66,505 $125,875 
State9,849 8,368 22,340 
Foreign23,380 23,366 53,674 
45,434 98,239 201,889 
Deferred:
Federal38,947 (27,938)(18,781)
State37,665 7,511 (6,209)
Foreign7,531 (5,849)(5,069)
84,143 (26,276)(30,059)
$129,577 $71,963 $171,830 
The components of Income before income taxes for the years ended December 31, were as follows (in thousands): 
202520242023
Domestic$281,923 $369,870 $614,713 
Foreign176,808 147,268 252,163 
$458,731 $517,138 $866,876 
The table below provides the updated requirements of ASU 2023-09 for 2025 related to the Company's effective tax rate. See Note 1 Summary of Significant Accounting Policies — Accounting Standards Recently Adopted section for additional details on the adoption of ASU 2023-09.
Income tax provision differs from the amount that would be provided by applying the statutory U.S. corporate income tax rate for the years ended December 31, due to the following items (in thousands):
2025
United states statutory tax rate
$96,334 21.0%
State and local income taxes, net of federal income tax effect(a)
29,913 6.5 
Foreign tax effects
China
Valuation allowance adjustments
5,421 1.2 
Other
(184)— 
Thailand
BOI
(15,120)(3.3)
Global minimum tax
8,838 1.9 
Other
(2,658)(0.6)
Other foreign jurisdictions
147 — 
Effect of changes in tax laws or rates enacted in the current period
— — 
Effect of cross-border tax laws
Global intangible low-taxed income
6,679 1.5 
Other
761 0.2 
Tax credits
Foreign tax credit
(10,952)(2.4)
Research and development credit
(9,597)(2.1)
Changes in valuation allowances
15,956 3.5 
Nontaxable or nondeductible items
Nontaxable dividends
(12,285)(2.7)
Other
4,392 1.0 
Changes in unrecognized tax benefits
4,978 1.1 
Other adjustments
Intercompany profit in inventory
7,243 1.6 
Other
(289)(0.2)
Effective tax rate
$129,577 28.2%
(a)State taxes in Wisconsin made up the majority (greater than 50%) of the tax effect in this category.
The Company's effective tax rate of 28.2% for the year ended December 31, 2025 was primarily driven by an increase in federal, state and foreign valuation allowances and a global minimum tax provision, partially offset by tax benefits related to federal tax credits and Thailand tax holidays.
On July 4, 2025, H.R. 1, the One Big Beautiful Bill Act (the OBBB Act), was enacted in the United States. The Act introduced several tax law changes relevant to the manufacturing industry. Key provisions include the restoration of 100% bonus depreciation for qualified property, expanded interest deductibility under Internal Revenue Code (IRC) Section 163(j) and other international tax reforms affecting global supply chains and cross‑border operations. The OBBB Act also reinstates immediate expensing for domestic research and development expenditures for tax years beginning after December 31, 2024, reversing prior rules that required capitalization and amortization of such costs. These provisions do not have a material impact on the Company's effective tax rate for the periods presented.

As previously disclosed for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09, the effective income tax rate differs from the statutory federal income tax rate as follows: 
20242023
Provision at statutory rate
$108,599 $182,044 
State taxes, net of federal benefit10,003 21,659 
Foreign rate differential2,196 7,887 
Foreign derived intangible income(1,744)(8,669)
Research and development credit(20,706)(23,130)
Unrecognized tax benefits including interest and penalties(2,026)(9,210)
Valuation allowance adjustments10,797 7,345 
State credits(4,526)(8,035)
Global intangible low-taxed income2,605 474 
Return to provision adjustments
(5,421)1,057 
Executive compensation limitation 5,404 8,712 
Other foreign inclusions(13,601)1,563 
Tax incentives
(16,476)(12,996)
Other(3,141)3,129 
Income tax provision
$71,963 $171,830 
The Company's effective tax rates of 13.9% and 19.8% for the years ended December 31, 2024 and December 31, 2023, respectively, reflect tax benefits related to federal research and development tax credits and Thailand tax holidays.
The 2017 Tax Cuts and Jobs Act subjects U.S. shareholders to current tax on global intangible low-taxed income (GILTI) earned by certain foreign subsidiaries for which a company can elect to either recognize deferred taxes or to provide tax expense in the year incurred. The Company has elected to account for GILTI in the year the tax is incurred.
The Company qualifies for certain tax holidays in Thailand if certain employment and manufacturing criteria are met. The impact of the tax holiday decreased foreign taxes by $15.1 million, $16.6 million and $13.0 million in 2025, 2024 and 2023, respectively, and the tax holidays have expected expiration periods between 2026 and 2027. The benefit of the tax holiday on net income per share (diluted) was $0.12, $0.12 and $0.09 in 2025, 2024 and 2023, respectively.
The Company continues to monitor the implementation of the global minimum tax provision pursuant to OECD Pillar Two GloBE rules (Pillar Two) in jurisdictions in which it operates. The Company has included a provision of $8.8 million related to the global minimum tax for Thailand in its consolidated financial statements.
The principal components of the Company’s deferred income tax assets and liabilities as of December 31, include the following (in thousands):
20252024
Deferred income tax assets:
Accruals not yet tax deductible$79,630 $144,331 
Stock compensation9,949 11,779 
Net operating loss and tax credit carryforwards
94,910 82,027 
Amortization of research and experimental costs100,635 100,880 
Other62,299 62,889 
347,423 401,906 
Valuation allowance(94,580)(59,313)
252,843 342,593 
Deferred income tax liabilities:
Depreciation, tax in excess of book(25,879)(51,107)
Pension and postretirement healthcare plan obligations(121,258)(90,589)
Withholding tax(5,246)(15,915)
Other(32,174)(26,045)
(184,557)(183,656)
$68,286 $158,937 
The Company reviews its deferred income tax asset valuation allowances on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred income tax asset is considered, along with any positive or negative evidence, including tax law changes. Since future financial results and tax law may differ from previous estimates, periodic adjustments to the Company’s valuation allowances may be necessary.
The Company's gross state net operating loss carryforwards were as follows at December 31 (in thousands):
Year of Expiration20252024
2031$238,682 $238,682 
203212 12 
203346 46 
2034107 108 
20351,085 1,085 
203660 60 
2037188 187 
2038824 824 
203911,285 11,285 
204037,679 34,354 
20412,135 2,135 
2042347 347 
2043480 — 
204417,462 — 
20454,277 — 
Indefinite7,280 7,280 
$321,949 $296,405 
The Company also had Wisconsin research and development credit carryforwards of $59.1 million at December 31, 2025, expiring in 2026-2040.
At December 31, 2025, the Company had a deferred tax asset of $61.5 million related to its state net operating loss and Wisconsin research and development credit carryforwards and a deferred tax asset of $17.4 million related to foreign net operating losses.
The Company's valuation allowance was $94.6 million at December 31, 2025 and included $60.9 million related to state net operating loss and Wisconsin research and development credit carryforwards, $17.7 million related to foreign net operating loss carryforwards and other foreign deferred tax assets and $16.0 million related to other deferred tax assets. The change in the valuation allowance from prior year included an increase of $17.4 million related to state net operating loss and Wisconsin research and development credit carryforwards, an increase of $16.0 million related to foreign tax credits, and a $1.9 million increase related to foreign operations.
The Company recognizes interest and penalties related to unrecognized tax benefits in Income tax provision (benefit). Changes in the Company’s gross liability for unrecognized tax benefits, excluding interest and penalties, were as follows (in thousands): 
20252024
Unrecognized tax benefits, beginning of period$16,179 $18,214 
Increase in unrecognized tax benefits for tax positions taken in a prior period1,822 3,818 
Decrease in unrecognized tax benefits for tax positions taken in a prior period— (3,773)
Increase in unrecognized tax benefits for tax positions taken in the current period1,148 2,473 
Statute lapses(21)(3,800)
Settlements with taxing authorities(971)(753)
Unrecognized tax benefits, end of period$18,157 $16,179 
The amount of unrecognized tax benefits as of December 31, 2025 and 2024 that, if recognized, would affect the effective tax rate was $14.1 million and $10.3 million, respectively.
The total gross amount of benefit related to interest and penalties associated with unrecognized tax benefits recognized in the Consolidated statements of operations was a net expense of $1.0 million and $0.7 million during 2025 and 2024, respectively, and a net benefit of $8.7 million during 2023.
The total gross amount of interest and penalties associated with unrecognized tax benefits recognized at December 31, 2025 and 2024 in the Consolidated balance sheets was $8.9 million and $7.1 million, respectively.
The Company does not expect a significant increase or decrease to the total amounts of unrecognized tax benefits related to continuing operations during the fiscal year ending December 31, 2026. However, the Company is under regular audit by tax authorities. The Company believes that it has appropriate support for the positions taken on its tax returns and that its annual tax provision includes amounts sufficient to pay any assessments. Nonetheless, the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year.
The Company or one of its subsidiaries files income tax returns in the U.S. federal and Wisconsin state jurisdictions and various other state and foreign jurisdictions. The Company is no longer subject to income tax examinations for Wisconsin state income taxes before 2020 or for U.S. federal income taxes before 2019. In all other jurisdictions, tax periods prior to 2018 are closed.
The following is a schedule of cash paid for income taxes (in thousands):
202520242023
Jurisdiction
U.S. Federal
$9,686 $— $— 
State:
Pennsylvania
2,168 — — 
State - Other
10,622 — — 
Foreign:
Germany
2,641 — — 
Singapore
2,485 — — 
Thailand
7,815 — — 
Foreign - Other
3,941 — — 
Total cash paid for income taxes (net of refunds)
$39,358 $— $— 
Total cash paid for income taxes (prior to ASU 2023-09)
$— $111,117 $237,658 

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 26, 2025
2023Feb 23, 2024
2022Feb 24, 2023
2021Feb 25, 2022
2020Feb 23, 2021
2019Feb 19, 2020
2018Feb 28, 2019
2017Feb 21, 2018
2016Feb 21, 2017
2015Feb 18, 2016

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.