TENNANT CO

17. Income Taxes

Income before income taxes for the three years ended December 31 was as follows:

Income tax expense (benefit) for the three years ended December 31 was as follows:

In general, it is our practice and intention to permanently reinvest the earnings of our foreign subsidiaries and repatriate earnings only when the tax impact is zero or immaterial. Accordingly, no deferred taxes have been provided for withholding taxes or other taxes that would result upon repatriation of our approximately $119.3 million of undistributed earnings from foreign subsidiaries to the United States as those earnings continue to be permanently reinvested.

In December 2021, the Organization for Economic Cooperation and Development (OECD), which is an international public policy setting organization comprised of member countries including the U.S., published a proposal for the establishment of a global minimum tax rate of 15% (the "Pillar Two rule"). Member states have begun implementing the rules through local legislation and the OECD continues to refine technical guidance. We have considered the applicable developments under the Pillar Two rules and there is no material impact on the 2024 consolidated financial statements.

Our effective income tax rate varied from the U.S. federal statutory tax rate for the three years ended December 31 as follows:

The effect of foreign operations line item includes (3.7%) and (12.0%) benefits for 2024 and 2023, respectively, associated with reductions to deferred tax liabilities on undistributed foreign earnings as those cumulative earnings were reduced by current year statutory book losses.

Deferred tax assets and liabilities were comprised of the following as of December 31:

Tax credit carryforwards consist of $3.1 million of U.S. federal and state tax credits and $1.2 million of Netherlands tax credits. We have non-U.S. cumulative tax losses of $29.8 million in various countries ($7.7 million tax effected). Cumulative losses can be used to offset the income tax liabilities on future income in these countries. Of these losses, $29.5 million have unlimited carryforward periods. Less than $0.3 million of these losses have a limited carryforward period.

The valuation allowance as of December 31, 2024 principally applies to foreign net operating losses as well as foreign and domestic tax credit carryforwards which, in the opinion of management, are more likely than not to expire unutilized. However, to the extent that tax benefits related to these carryforwards are realized in the future, the reduction in the valuation allowance will reduce income tax expense. In 2024, we recorded a net valuation allowance increase of $0.1 million due to the acquisition of TCS and internal restructuring. As of December 31, 2024, we believe it is more likely than not that the remainder of our deferred tax assets are realizable.

A reconciliation of the beginning and ending amount of unrecognized tax benefits was as follows:

Included in the balance of unrecognized tax benefits as of December 31, 2024 and 2023 are potential benefits of $5.5 million and $3.7 million, respectively, that if recognized, would affect the effective tax rate.

We recognize potential accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. In addition to the liability of $5.9 million and $4.1 million for unrecognized tax benefits as of December 31, 2024 and 2023, there was approximately $0.6 million and $0.5 million, respectively, for accrued interest and penalties. To the extent interest and penalties are not assessed with respect to uncertain tax positions, the amounts accrued will be revised and reflected as an adjustment to income tax expense.

We and our subsidiaries are subject to U.S. federal income tax as well as income tax of numerous state and foreign jurisdictions. We are generally no longer subject to U.S. federal tax examinations for taxable years before 2018. The number of years which remain open for audit for U.S. state or foreign tax purposes varies by jurisdiction but generally ranges from 3-5 years. We are currently undergoing income tax examinations in various foreign jurisdictions. Although the final outcome of these examinations cannot be currently determined, we believe that we have adequate reserves with respect to these examinations.