No Tax on Car Loan Interest Explained

For years, interest on a personal car loan was simply a cost of borrowing — never a tax deduction. The One Big Beautiful Bill Act changed that for 2025 through 2028: if you finance a new, American-assembled vehicle, you can deduct up to $10,000 of the interest each year. The catch is in the details, and for many buyers the real saving is a few hundred dollars a year.

What the deduction covers

You can deduct interest paid during the year on a loan that meets all of these tests. Miss one and none of the interest counts.

• The loan was taken out after December 31, 2024.
• It was used to buy the vehicle and is secured by a lien on it.
• The vehicle is new — you are its first owner. Used cars don’t qualify.
• Final assembly took place in the United States.
• It is a car, minivan, van, SUV, pickup truck, or motorcycle under 14,000 pounds, bought for personal use.

Leases are out, even though a lease payment includes a finance charge. Where a car was assembled is printed on its window sticker and can be looked up from the VIN, which you also have to report on your tax return.

You don’t have to itemize

Like the new deductions for tips and overtime, this one is claimed on Schedule 1-A and reduces taxable income on top of the standard deduction. That matters, because most households take the standard deduction and would otherwise get nothing from a new itemized deduction. It lowers federal income tax only — it doesn’t change state taxes unless your state follows the federal rule.

The income phase-out

The deduction is reduced by $200 for every $1,000 — or part of $1,000 — of modified adjusted gross income above $100,000, or $200,000 on a joint return. The $10,000 cap disappears completely at $150,000 single and $250,000 joint. Because the reduction comes off your actual deduction, a modest amount of interest is wiped out much sooner.

What it’s actually worth

A deduction saves your top tax rate times the amount deducted. Take a $40,000 loan at 7% for five years with payments starting in January 2026, for a single filer earning $85,000 — squarely in the 22% bracket.

That is real money, but it doesn’t make an expensive loan cheap: you still pay the other 78% of the interest. Hitting the $10,000 cap takes a big loan at a high rate — even $80,000 at 9% over six years runs about $6,800 of interest in the first year.

Refinancing and other edge cases

• Paying cash: there is no interest, so there is nothing to deduct.
• Refinancing: a refinance of a qualifying loan generally keeps qualifying, but only on the amount you originally borrowed — cash-out amounts don’t count.
• Business use: a vehicle bought for business is handled under the regular business-expense rules instead.
• Married couples: the $10,000 cap is per return, not per person.

Run your own numbers

Your saving depends on the loan size, rate, when payments start, and where your income falls against the phase-out. Enter your loan and income to see the deduction for each tax year through 2028.