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Note 5 - Income Taxes | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Income Tax Disclosure [Text Block] |
Note 5. | Income Taxes
Income tax expense in both 2025 and 2024 varies from the amount computed by applying the federal corporate income tax rates of 21% to income before income taxes, primarily due to state income taxes, net of federal income tax effect, adjusted for permanent differences the most significant of which is the effect of the per diem pay structure for drivers, executive compensation disallowance, and excess tax benefits on share-based compensation. Drivers who meet the requirements to receive per diem receive non-taxable per-diem pay in lieu of a portion of their taxable wages. This per diem program increases our drivers' net pay per mile, after taxes, while decreasing gross pay, before taxes. As a result, salaries, wages, and related expenses are slightly lower and our effective income tax rate is higher than the statutory rate. Generally, as pre-tax income increases, the impact of the driver per diem program on our effective tax rate decreases, because aggregate per diem pay becomes smaller in relation to pre-tax income, while in periods where earnings are at or near breakeven the impact of the per diem program on our effective tax rate is significant. Due to the partially nondeductible effect of per diem pay, our tax rate will fluctuate in future periods based on fluctuations in earnings. Our liability recorded for uncertain tax positions as of September 30, 2025 is unchanged since December 31, 2024. The net deferred tax liability of $122.2 million primarily relates to differences in cumulative book versus tax depreciation of property and equipment, partially off-set by net operating loss carryovers and insurance claims that have been reserved but not paid. The carrying value of our deferred tax assets assumes that we will be able to generate, based on certain estimates and assumptions, sufficient future taxable income in certain tax jurisdictions to utilize these deferred tax benefits. If these estimates and related assumptions change in the future, we may be required to establish a valuation allowance against the carrying value of the deferred tax assets, which would result in additional income tax expense. On a periodic basis, we assess the need for adjustment of the valuation allowance. The Company has determined that a valuation allowance was not necessary at September 30, 2025 for its deferred tax assets since it is more likely than not they will be realized from the future reversals of temporary differences. If these estimates and related assumptions change in the future, we may be required to modify our valuation allowance against the carrying value of the deferred tax assets. The American Rescue Plan extended the reach of IRC Section 162(m) to include compensation paid to the eight highest-paid individuals other than the chief executive officer and the chief financial officers (rather than the three highest), however, this change is not effective until 2027. There is no material impact to the financial statements at this time. We do not anticipate the Inflation Reduction Act (the "IRA") will have a significant impact on income tax expense or on other taxes. One of the most impactful provisions of the IRA includes the establishment of a Corporate Alternative Minimum Tax ("CAMT"). However, this tax only applies to corporations with three-year average earnings in excess of $1.0 billion. We will continue to monitor the CAMT each year to determine if we will become an applicable corporation. Additionally, the IRA enacted an excise tax on stock buybacks, which imposes a 1% tax on stock buybacks, subject to netting provisions regarding stock awarded to employees as part of their compensation. We do not believe this will have a material impact on our active repurchase program. On July 4, 2025, President Trump signed the One Big Beautiful Bill Act ("OBBBA") into law. The OBBBA, among other things, includes provisions for accelerated tax depreciation, modifications to the net interest deduction limitations, and the rollback of certain alternative energy provisions. Based on preliminary analysis, we anticipate our deferred tax liability for fixed assets to increase by approximately $31.0 million related to bonus depreciation. We are continuing to model the effects of the OBBBA, such as Section 163(j) and Section 174, with no other adjustments expected as of September 30, 2025.

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