Overview
A new deduction available for the 2025 filing season lets some taxpayers deduct interest paid on auto loans for new cars purchased after December 31, 2024. The change is part of the One Big Beautiful Bill Act, which also altered rules on tipped wages and overtime and eliminated the federal electric vehicle purchase tax credit.
Who qualifies
– New vehicles only: The deduction applies only to cars bought new after December 31, 2024. Loans taken out before that date and any used-car purchases are excluded.
– Income limits: The deduction phases out based on modified adjusted gross income (MAGI). Single filers begin to lose eligibility at a MAGI of $100,000; married couples filing jointly begin at $200,000. MAGI is determined after certain adjustments (for example, pre-tax retirement contributions), and taxpayers near the thresholds may qualify for a partial deduction.
– Assembly location and use: The vehicle must have had final assembly in the United States. You can confirm assembly location via the vehicle identification number (VIN). The car must be for personal use; vehicles used for business do not qualify.
How much you can deduct
– Maximum: You can deduct up to $10,000 of interest paid per year on a qualifying auto loan if both the buyer and vehicle meet the rules.
– Recordkeeping: Lenders will not issue a special tax form for this deduction, so you should add up the interest reported on your 2025 auto loan statements when preparing your return.
– Deduction vs. credit: This is a tax deduction, which reduces taxable income rather than directly cutting tax liability. For example, a $1,000 deduction lowers taxable income by $1,000; at a 22% marginal tax rate, the tax benefit is roughly $220.
Other key details
– Standard deduction allowed: You may claim this deduction even if you take the standard deduction, unlike many other interest-related deductions that require itemizing.
– Not applicable to leases or certain financing: The rule does not apply to leased vehicles, buyers who used 0% financing, or loans originated before the December 31, 2024 cutoff.
Likely impact on domestic manufacturing
– Limited effect: Because the deduction is capped and narrow in scope, most analysts expect it will not substantially shift where automakers locate production. It may tip the balance for some consumers comparing a U.S.-assembled model to an import, but it is unlikely to be decisive for most buyers or manufacturers.
– Modest consumer benefit: For eligible purchasers the deduction provides a modest savings. Those who do not qualify are not financially harmed by the rule.
What to do now
– If you buy a new car after 12/31/2024 and think you qualify, keep all 2025 loan statements showing interest paid.
– Check the VIN to confirm U.S. final assembly and track your MAGI to estimate eligibility and any phaseout.
– Consult a tax preparer if you have questions about how the deduction interacts with your overall return or with business vs. personal use of a vehicle.