Car Loan Interest Deduction: Most Drivers Will Not Qualify

Treasury and the IRS published the final regulations for the car loan interest deduction on September 8, 2026. For tax years 2025 through 2028, up to $10,000 of interest on a qualifying car loan comes off your taxable income, whether or not you itemize.

Most drivers will not qualify. Treasury estimates that about 6 million loans a year are written on new, US-assembled vehicles, out of roughly 16 million new vehicles sold, and used cars are out entirely. I would rather you hear that now than at tax time.

Who qualifies, and every condition has to hold

The loan has to be from 2025 or later. The debt must be originated after December 31, 2024. A car financed in December 2024 is out, and the final rule says the law leaves no room to change that.

The car has to be new. The original use has to start with you, and used vehicles do not qualify. A certified pre-owned car counts as used, even if it was new to you.

It has to be a personal vehicle. That means a car, minivan, van, SUV, pickup, or motorcycle bought for personal use, with a gross vehicle weight rating under 14,000 pounds. The rating is the most the vehicle can weigh fully loaded.

Final assembly has to be in the United States. The regulations exclude any vehicle whose final assembly happened somewhere else, and the badge is no guide, since American brands build some models abroad and foreign brands build some here. The VIN settles it, and the IRS points to the NHTSA VIN decoder to look it up.

The loan has to be secured by a first lien. A lien is the lender's right to take the car back if you stop paying, and first means no other lender comes ahead of them. Ordinary dealer and bank auto loans work this way. The IRS fact sheet says only a lien, but the final rule, like the law, says a first lien, and the regulation is what governs. A personal loan or a credit card that paid for the car generally has no lien, so it does not count, and lease payments do not qualify either.

The VIN goes on the return. For any year you claim the deduction, you have to put the vehicle's VIN on your tax return, which is how the IRS can check the other conditions.

Only the part of the loan that bought the car counts. If a trade-in's unpaid balance was rolled into the new loan, the rule splits the interest in proportion. The share on that old debt is out, and so is any share on cash the lender gave you. A lease buyout usually fails too, because the car's original use began with the leasing company.

Income limits and the phase-out

The $10,000 is the most anyone can take, and income cuts into it quickly. The rule measures income by modified adjusted gross income, or MAGI, which for most filers is the adjusted gross income already on the return. It differs only if you excluded foreign or US territory income. The deduction drops by $200 for every $1,000, or portion of $1,000, of MAGI above $100,000. For a married couple filing a joint return, the threshold is $200,000.

That reduction, the phase-out, comes off the interest you actually paid, capped at $10,000. In the rule's own example, a single filer with $7,000 of interest and MAGI of $124,200 loses $5,000 and keeps $2,000. If you paid the full $10,000, it is gone at $150,000 for a single filer and at $250,000 for joint filers. A single filer who paid $3,000 is out by $115,000.

Head of household uses the single-filer $100,000 threshold. Treasury declined to change that because the law sets both thresholds. The $10,000 limit is also per return, whatever the filing status. A married couple filing jointly with two qualifying car loans adds the interest together and runs it against one $10,000 ceiling.

None of this is tax advice

I build budgeting software. I am not an accountant, and nothing here is tax advice. Whether you qualify depends on the details of your loan, your car, and your return, and a tax preparer should confirm it before you count on it. What I can help with is the one part that matters whether you qualify or not: knowing how much interest you are paying.

Knowing your interest before Form 1098-VLI arrives

The law also requires lenders to report it. A lender that collects $600 or more of interest on a qualifying loan in a calendar year has to send you Form 1098-VLI, the Vehicle Loan Interest Statement. For 2025 only, a lender could skip the form and make the year's total available another way.

That form arrives in January, after the year has closed, and a loan with less than $600 of interest may not get one at all. Some loan statements show the interest paid so far this year, and some total it only after the year ends. Neither tells you what the rest of the year will add.

That number matters if you are weighing extra payments. I wrote about whether paying a car loan off early makes sense a few months back, and the deduction changes that math a little. Interest you do not pay is interest you cannot deduct. A deduction is worth your tax rate on each dollar, so at a 22 percent rate, $1,000 of deductible interest saves about $220. Avoiding that $1,000 of interest still saves you $780.

What Trupocket does today

Trupocket tracks auto loans as loan accounts with an amortization schedule, which splits every scheduled payment into principal and interest, month by month, with a total for each calendar year. Loan payment history adds up the principal and interest on payments you have already recorded, one year at a time. Together they show what you have paid this year and what the rest of the year will add.

That is the extent of it. Whether you can claim the deduction is a question for your preparer. Knowing your interest before the year closes is the part you can handle today, with a loan account and an amortization schedule.