Auto Loan Interest Tax Deductible: Your Complete Savings Guide
If you're paying interest on an auto loan for a qualifying vehicle, that interest is now tax deductible — and it could save you anywhere from $200 to $2,200 per year depending on your loan size, interest rate, and tax bracket. Here's exactly how to determine what you'll save and how to claim it.
This calculator provides estimates only and should not be considered tax advice. Consult a qualified tax professional for your specific situation.
Based on the One Big Beautiful Bill Act (OBBBA), signed July 4, 2025. This deduction is available for tax years 2025-2028.
How Much Auto Loan Interest Can You Deduct?
The maximum deduction is $10,000 per year. However, most auto borrowers pay less than that in annual interest, so your actual deduction will typically equal your full interest payment. For example, a $40,000 auto loan at 6% interest over 60 months generates about $2,300 in interest the first year — all of which is deductible.
The deduction phases out for higher incomes. Single filers earning over $100,000 and joint filers earning over $200,000 see a gradual reduction. Use our calculator to see your exact deductible amount.
Auto Loan Interest Deduction by Loan Size
Here's a quick reference for typical first-year interest amounts at different loan sizes (assuming 6.5% APR, 60-month term):
- $20,000 loan — approximately $1,250 first-year interest
- $30,000 loan — approximately $1,875 first-year interest
- $40,000 loan — approximately $2,500 first-year interest
- $50,000 loan — approximately $3,125 first-year interest
- $60,000 loan — approximately $3,750 first-year interest
At a 22% tax bracket, multiply these by 0.22 to get your approximate tax savings.
Comparing Auto Loan Rates to Maximize Your Benefit
While you shouldn't take out a more expensive loan just for the tax benefit, the deduction does change the effective cost of borrowing. A 6.5% auto loan with the tax deduction effectively costs about 5.1% for someone in the 22% bracket (6.5% × (1 - 0.22) = 5.07%).
This means it may make sense to finance a vehicle purchase even if you have cash available, especially if your savings are earning a comparable return. Always run the numbers for your specific situation.