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Income Tax Provision | 6 Months Ended
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Jun. 30, 2025
Income Tax Disclosure [Abstract] |
Income Tax Provision | Note 7 - Income Tax Provision Metallus’ provision for income taxes in interim periods is computed by applying the appropriate estimated annual effective tax rates to income or loss before income taxes for the period. In addition, non-recurring or discrete items, including interest on prior-year tax liabilities, are recorded during the periods in which they occur.
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Provision (benefit) for incomes taxes |  | $ | 4.9 |  |  | $ | 1.5 |  |  | $ | 6.5 |  |  | $ | 7.5 |
Effective tax rate |  |  | 57.0 | % |  |  | 24.6 | % |  |  | 56.5 | % |  |  | 20.8 | %
Income tax expense for the three months ended June 30, 2025 was calculated using forecasted multi-jurisdictional annual effective tax rates to determine a blended annual effective tax rate. The effective tax rate for the three and six months ended June 30, 2025 was 57.0% and 56.5%, respectively, compared to a rate of 24.6% and 20.8% for the prior year. The increase in the effective tax rate for the three and six months ended June 30, 2025 is primarily related to lower net income and the limitations on the tax deductibility of the loss on extinguishment of debt on the Convertible Senior Notes due 2025. For the six months ended June 30, 2025, Metallus made no U.S. federal tax payments, $0.3 million in state and local tax payments, and $0.2 million in foreign tax payments. For the six months ended June 30, 2024, Metallus made $21.5 million in U.S. federal tax payments, $6.1 million in state and local tax payments, and $0.2 million in foreign tax payments. On July 4, 2025, the reconciliation bill, commonly referred to as the One Big Beautiful Bill Act (“OBBBA”) was signed into law, which includes a broad range of tax reform provisions, including provisions related to fixed asset bonus depreciation and research and development expenditures, that may affect the Company's financial results. The Company is currently evaluating the impact of these provisions which could affect the Company’s effective tax rate and deferred tax assets in 2025 and future periods.

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