How to get full ‘big beautiful’ bill car loan interest tax break

Republicans are pushing to fulfill President Donald Trump’s promise of providing a tax break on car loan interest to American citizens. However, economists believe that the proposed tax break may not offer significant financial benefits to most households.

The House and Senate Republicans have introduced the “One Big Beautiful Bill Act,” which includes a provision for a tax deduction of up to $10,000 on annual interest for new auto loans. This tax break would be temporary and would expire after 2028.

According to Jonathan Smoke, chief economist at Cox Automotive, very few drivers actually pay $10,000 or more in annual interest on their auto loans. In fact, it would require a loan of around $112,000 to utilize the full $10,000 deduction in the first year of owning a car. Only about 1% of new auto loans are this large, with luxury vehicles like Rolls-Royce, Ferrari, Bentley, Aston Martin, and others being the most likely candidates for such hefty loans.

The proposed tax break on auto loan interest would also have an income limitation. Individuals with an annual income exceeding $100,000, or $200,000 for married couples filing jointly, would see a reduction in the value of the deduction. Furthermore, the tax benefit diminishes once income surpasses $150,000 (or $250,000 for married couples).

In reality, the average car loan in 2025 is around $43,000, meaning that the average buyer would only receive a tax deduction of about $3,000 in the first year of a six-year loan. However, this deduction would be subtracted from the buyer’s taxable income, resulting in a financial benefit of $500 or less in the first year.

Overall, experts believe that the proposed tax break on auto loan interest may not provide substantial benefits to most households, as the criteria for eligibility and the income limitations may restrict the number of individuals who can take full advantage of the deduction.