Can You Deduct Car Loan Interest on a Used Car? 2026 Rules Explained
Quick Answer: No. The new federal car loan interest deduction (up to $10,000 a year, 2025 to 2028) only applies to new vehicles whose original use starts with you and that had final assembly in the U.S. Used cars, including certified pre-owned, do not qualify. Business-use vehicles may still allow interest deductions under separate rules.
What Is the New Car Loan Interest Deduction?
The One Big Beautiful Bill Act created a temporary tax break that lets some buyers deduct interest paid on a car loan. Before this, personal car loan interest had not been deductible since 1986.
Here is how the rule works:
Rule | Detail |
Years covered | Tax years 2025 through 2028 |
Maximum deduction | $10,000 of interest per year |
Income phase-out | Starts above $100,000 MAGI (single) or $200,000 (joint) |
Vehicle | New car, SUV, van, pickup or motorcycle under 14,000 lbs, final assembly in the U.S. |
Loan | Taken out after Dec. 31, 2024, for personal use |
Itemizing required? | No, works with the standard deduction |
Used vehicles | Not eligible |
Leases | Not eligible |
Why Used Cars Don't Qualify
The law requires that the "original use" of the vehicle starts with the taxpayer. A used car, by definition, already had a first owner. That rules out every used vehicle, no matter how new it is or whether it is certified pre-owned.
NPR pointed out the irony: used-car buyers with weaker credit tend to pay the highest interest rates, yet they get no benefit from this deduction.
Is the New-Car Deduction Worth Switching For?
Probably not for most budget-focused buyers. The deduction lowers taxable income, not your tax bill dollar for dollar. Here is a rough example:
A buyer pays $2,500 in interest on a new-car loan in one year.
In the 22% tax bracket, the deduction saves about $550.
The same buyer could save far more by choosing a used car that costs $15,000 to $20,000 less than a new one.
New cars averaged above $49,000 in 2026, while the average used listing was about $27,000. The gap in price, depreciation and insurance usually outweighs a few hundred dollars of tax savings. For more on that, read why buying used is a smart financial decision.
When Can Used Car Loan Interest Be Deducted?
There are a few narrow situations, separate from the new law:
Business use: If you are self-employed and use the car for work, you may be able to deduct the business-use share of loan interest. Talk to a tax professional.
Home equity loan: Interest on a home equity loan is only deductible when the money is used to buy, build or improve the home, so using it for a car generally does not qualify.
We're a car dealer, not a tax advisor, so confirm your situation with a CPA or the IRS.
Better Ways to Lower Your Used Car Loan Cost
Since the tax break won't help, focus on the loan itself:
Raise your down payment. Even $1,000 to $2,000 more lowers interest over the life of the loan.
Shorten the term. A 48-month loan costs much less in total interest than a 72-month loan.
Compare rates first. Check a credit union and your bank before you shop. See our 2026 used car loan rates guide.
Pay extra when you can. Most auto loans have no prepayment penalty, but confirm before signing.
Buy the right car, not the most car. A reliable sedan with good mpg keeps both your payment and gas bill down.
If your credit is limited, our guide to buy here pay here in Chicago explains your options.
Frequently Asked Questions
Is car loan interest tax deductible in 2026?
Only for qualifying new, U.S.-assembled vehicles bought for personal use after Dec. 31, 2024, up to $10,000 a year.
Can I deduct interest on a certified pre-owned car?
No. CPO vehicles are still used and don't meet the "original use" requirement.
Do I need to itemize to claim the car loan interest deduction?
No. It is available whether you itemize or take the standard deduction.
If I refinance a qualifying new-car loan, does the deduction carry over?
Generally yes, on interest up to the refinanced balance, according to the House Ways and Means Committee summary.
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