Car Loan Interest Deduction 2026: How to Claim Up to $10,000

For the first time in decades, interest on a personal car loan can be tax-deductible in the United States. If you financed a new, US-assembled car for personal use, you may be able to deduct up to $10,000 of qualified vehicle loan interest per tax return per year for tax years 2025 through 2028 — whether you itemize deductions or take the standard deduction.

The rules are specific, and one trap catches a large share of buyers: if you rolled negative equity from an old car into your new loan, the interest on that rolled-over debt does not qualify. This guide explains who qualifies, how the income phaseout works, what the final IRS rules settled, and exactly how to claim the deduction — with worked numbers, not slogans.

Important: this is general information, not tax advice. Tax rules turn on your own return, your income, and your loan documents. If your situation is unusual — a refinance, a trade-in, mixed business use, or income near a phaseout threshold — check it with a tax professional before you file.

At a Glance: Does Your Loan Qualify?

If a row fails, that loan is not a qualifying loan. One exception to keep straight: a loan that mixes qualifying and non-qualifying amounts — most often rolled-over negative equity — is not disqualified outright. Its interest is split pro rata, and only the qualifying share is deductible, as the trade-in section below explains.

What the Law Says: OBBBA and the Final Rules (T.D. 10054)

The deduction was created by the One Big Beautiful Bill Act (OBBBA, Pub. L. 119-21), signed on July 4, 2025. The Treasury and IRS then finalized the detailed rules in Treasury Decision 10054, published in the Federal Register on September 8, 2026 (91 FR 57214), with a stated effective date of November 9, 2026.

That effective date does not delay the deduction itself. The final regulations apply to taxable years beginning after December 31, 2024, and before January 1, 2029 — in practice, tax years 2025 through 2028. A qualifying loan taken out in 2025 or 2026 is covered even though the final rulebook arrived in late 2026.

Two things the final rules settled matter most to buyers. First, how lenders must identify qualifying loans and report interest (Form 1098-VLI, below). Second — over objections from dealer and lender groups — that negative equity rolled over from a trade-in is not part of a qualifying loan, because that debt relates to the old vehicle, not the purchase of the new one.

Who Qualifies: The Checklist, Item by Item

1. You are an individual taxpayer

Only individuals — and, in the final regulations’ terms, decedents’ estates and non-grantor trusts — may claim the deduction. Corporations and partnerships cannot.

2. The loan was incurred after December 31, 2024

A loan that began in 2024 or earlier does not qualify, even if you are still paying interest on it during 2025–2028. A qualifying loan that is later refinanced can stay eligible, but only up to the outstanding balance of the original loan at the time of refinancing, and it must remain secured by a first lien on the same vehicle. Any cash-out or extra borrowing added in a refinance does not qualify, and the interest is split pro rata between the qualifying and non-qualifying parts.

3. The vehicle is new, for personal use, and US-assembled

Three vehicle tests must all pass:

• New: the vehicle’s original use must begin with you. A used car, however lightly used, does not qualify — and buying out a car you leased does not count as original use either.
• US final assembly: the vehicle must have undergone final assembly in the United States. Do not rely on the brand name or where the manufacturer is headquartered. Check the Monroney window sticker (the vehicle information label) or use the NHTSA VIN Decoder to verify the specific vehicle — many models sold in the US are assembled abroad.
• Type and weight: it must be a car, minivan, van, SUV, pickup truck, or motorcycle, manufactured primarily for use on public streets and highways, with a gross vehicle weight rating (GVWR) under 14,000 pounds.

At purchase, you must expect the vehicle to be used for personal purposes more than 50 percent of the time over the period you expect to own it — use by you, your spouse, or certain close relatives counts toward that share. That expectation is assessed once, when the loan is taken out; the final rules do not require you to re-prove personal use every year, and a later change in how the car is actually used does not retroactively disqualify the loan.

4. The loan is secured by a first lien on the vehicle

The debt must be incurred to purchase the vehicle and secured by a first lien on it. Unsecured personal loans, credit-card financing, second liens, and loans from related parties do not qualify. Leases do not create qualifying indebtedness at all, so lease payments never qualify — a distinction that matters if you are choosing between leasing and buying a new car.

5. What counts inside the loan

A qualifying loan can include more than the car’s sticker price. Amounts customarily financed in a vehicle purchase that directly relate to that vehicle may count — for example, sales taxes, title and registration fees, vehicle accessories, service or repair plans, extended warranties, vehicle-protection products, GAP coverage, and qualifying credit insurance.

What is excluded is just as important: negative equity from a trade-in, ordinary insurance premiums (such as collision and liability cover), cash proceeds paid to you, and amounts financing unrelated property or services do not count. Your lender’s Form 1098-VLI (see below) should reflect only the qualifying portion, so keep the itemized loan breakdown from your purchase documents.

How Much Can You Deduct? The $10,000 Cap and the Phaseout

The maximum is $10,000 of qualifying interest per tax return per year — not per vehicle and not per spouse. A married couple filing jointly shares one $10,000 cap. If you have two qualifying loans, you can combine their qualifying interest up to that cap.

It is a deduction, not a credit: it reduces your taxable income rather than cutting your tax bill dollar-for-dollar. The $10,000 figure is a cap on deductible interest, not a $10,000 refund.

Then the income phaseout applies to the cap. The deduction is reduced by $200 for every $1,000 (or part of $1,000) of modified adjusted gross income (MAGI) above $100,000 for single filers (and head-of-household and separate filers) or $200,000 for joint filers. It phases out completely at $150,000 MAGI single / $250,000 MAGI joint.

Worked example 1: the phaseout in action

A single filer with MAGI of $120,000 is $20,000 above the $100,000 threshold. The reduction is 20 × $200 = $4,000, so the $10,000 cap falls to $6,000. If that filer paid $2,581 of qualifying interest in the year (see the loan example below), the full $2,581 is still deductible — the reduced cap only bites when your qualifying interest exceeds it. At MAGI of $150,000 or more (single), the cap is $0 and no deduction is available, however much interest you paid.

A joint return with MAGI of $220,000 is $20,000 above the $200,000 threshold, so its cap is likewise reduced by $4,000, to $6,000.

Worked example 2: what a deduction is actually worth

Take a $40,000 loan at 7.0% APR over 60 months. The monthly payment is $792.05, total interest over the loan is $7,522.88, and interest paid in the first 12 months is $2,580.66. If all of that interest qualifies and you are in the 22% marginal tax bracket, the first-year deduction is worth about $2,581 × 22% = $568 in federal tax saved.

That is the honest scale of the benefit for a typical buyer: hundreds of dollars a year, not thousands. Anyone promising a $10,000 saving from this deduction is confusing the cap with the cash value.

The Trade-In Trap: Negative Equity Does Not Qualify

This is the detail most quick summaries miss, and it affects a lot of buyers. According to Edmunds’ Q2 2026 data, 29.6% of trade-ins toward new-vehicle purchases carried negative equity, averaging $6,884 — the highest second-quarter average on record — and buyers who rolled that debt into a new loan paid an average of $944 a month, $167 more than the industry average.

Worked example 3: a $6,884 rollover

Suppose you buy a $40,000 new car and roll $6,884 of negative equity from your old car into the same loan, for a total loan of $46,884 at 7.0% over 60 months. Your payment rises to $928.36 a month, and first-year interest totals $3,024.79. But only the interest on the $40,000 that bought the new car qualifies — about $2,580.66 of that first-year interest. The remaining $444.13, the interest on the rolled-over old debt, is not deductible, even though it sits in the same contract and the same monthly payment.

Three practical consequences follow:

1. Ask for the split in writing. Before you sign, ask the dealer and lender to itemize how much of the loan is the new vehicle’s price (plus customarily financed items) and how much is rolled-over negative equity or other non-qualifying amounts. That split is what determines your qualifying interest.
2. Paying the gap in cash preserves the deduction. If you can pay the $6,884 shortfall in cash instead of rolling it in, the whole new loan is for the new car, and its interest qualifies in full (subject to the cap and phaseout). The final regulations reinforce this: any down payment you make is applied first against the negative equity and other non-qualifying amounts, before it reduces the qualifying part of the loan.
3. The trap compounds. Rolled-over debt also raises your payment and total interest — Edmunds puts lifetime interest for negative-equity buyers at about $16,270 versus $9,811 for the average new-vehicle buyer in Q2 2026 — so the non-deductible portion is the most expensive part of the loan to carry.

If you are already underwater on a trade-in, read our guide to how to finance a car in 2026 before you sign, and if your credit is thin, our guide to bad credit car loans explains how approval and rates work.

How to Claim It: VIN, Schedule 1-A, and Form 1098-VLI

Step 1: Keep the VIN. You must report the vehicle’s VIN on your return for every year you claim the deduction. No VIN, no deduction — the requirement cannot be waived by the lender’s paperwork.

Step 2: Claim it on Schedule 1-A. The deduction is reported in Part IV of Schedule 1-A (Form 1040), the schedule created for the One Big Beautiful Bill Act deductions. You claim it whether you take the standard deduction or itemize your other deductions. One technical point many summaries get wrong: it is a below-the-line deduction — it reduces your taxable income, not your adjusted gross income (AGI), so claiming it does not change any AGI-based credits or thresholds.

Step 3: Expect Form 1098-VLI from your lender. Lenders and other businesses that receive $600 or more of qualifying interest on a single loan in a calendar year must file Form 1098-VLI (Vehicle Loan Interest Statement) with the IRS and furnish a statement to you. For tax year 2025, transitional relief applied under Notice 2025-57: lenders were not required to file the form, but had to make your total qualifying interest available to you by January 31, 2026. That relief was not extended — tax year 2026 is the first full mandatory reporting year, with the borrower statement due by January 31 and the IRS filing due February 28 on paper or March 31 electronically.

Three cautions. First, the $600 threshold applies loan by loan, not to your total interest across loans — a loan with under $600 of qualifying interest may produce no form even though its interest is deductible. Second, the form reports interest received; it does not determine your eligibility. A form arriving in the mail does not prove your car was US-assembled or your income is under the phaseout — that determination is still yours, and a missing form does not by itself disqualify you. Third, the same interest cannot be deducted twice: interest you already deduct as a business expense (for example, on Schedule C) is not also deductible here.

Step 4: Keep your own records. Save the purchase contract, the itemized loan breakdown showing any rolled-over amount, the window sticker or other assembly verification, and your lender’s annual interest statement. If the IRS questions the claim, those four documents answer nearly every question it can ask.

What Does Not Qualify: The Short List

• Used vehicles, however new they feel
• Leased vehicles — lease payments are not loan interest
• Vehicles assembled outside the United States
• Vehicles with a GVWR of 14,000 pounds or more
• Business-use or fleet vehicles claimed under this personal deduction
• Loans originated on or before December 31, 2024
• Unsecured loans, credit cards, second liens, and related-party loans
• Interest on rolled-over negative equity, ordinary insurance, cash-out amounts, and unrelated property
• Interest paid after 2028 — the deduction is temporary and ends with tax year 2028

If you are shopping for an EV, note a separate change: the federal $7,500 clean vehicle credit ended for vehicles acquired after September 30, 2025. Do not confuse that expired credit with this loan-interest deduction — they are different benefits with different rules. Our guides to the best electric cars of 2026 and the cheapest electric cars of 2026 price EVs at full MSRP for exactly that reason.

Buying With the Deduction in Mind

• Confirm US assembly before you fall in love with a model. A model line can mix US and foreign assembly plants by trim or year — verify the specific vehicle, not the badge.
• Compare loans on total interest and APR, not just the deduction. A lower APR on a slightly pricier car can beat a deductible but expensive loan. Our car insurance quotes guide covers the other big ownership cost to price before you sign.
• Decide about a trade-in separately from the new car. Get a payoff figure and an independent trade-in valuation first. If you are underwater, price the cash-gap option against the rollover option — the rollover costs you twice, in higher interest and in lost deductibility.
• Do not stretch the term to chase a bigger deduction. A longer loan generates more interest, but you still pay most of every interest dollar yourself; a deduction at a 22% bracket returns 22 cents of each deductible dollar. The deduction should never be the reason to borrow more or longer.
• Calendar the end date. The deduction covers tax years 2025–2028 only. Interest on a six-year loan taken out in 2026 will keep being paid long after the deduction expires — budget for the post-2028 years without it.

Frequently Asked Questions

Can I claim the car loan interest deduction if I take the standard deduction?

Yes. You claim it on Schedule 1-A whether you itemize or take the standard deduction. It reduces your taxable income; it does not reduce your AGI.

Is the deduction $10,000 off my tax bill?

No. $10,000 is the maximum amount of qualifying interest you can deduct from your income per return per year, before the phaseout. Your actual tax saving is the deductible interest multiplied by your marginal tax rate — for a typical buyer, a few hundred dollars a year.

Does a refinanced loan still qualify?

It can. A refinance of a qualifying loan stays eligible up to the original loan’s outstanding balance at the time of refinancing, secured by a first lien on the same vehicle. Any amount borrowed above that balance — cash-out or extra borrowing — does not qualify, and the interest is split pro rata.

Does a leased car qualify?

No. Lease payments are not interest on a loan secured by a first lien, so they never qualify. Buying out a leased car at the end of the lease does not count as original use either.

Does a used car qualify?

No. Original use must begin with you — the vehicle must be new.

My car is an American brand but was assembled in Mexico. Does it qualify?

No. The test is final assembly in the United States, not the brand’s headquarters. Check the window sticker or the NHTSA VIN Decoder for the specific vehicle.

I rolled negative equity into my new loan. Is any of the interest deductible?

Yes — the interest on the portion of the loan that bought the new qualifying vehicle is deductible (subject to the cap and phaseout). Only the interest on the rolled-over old debt is excluded. Ask your lender for the allocation in writing.

What if my lender does not send me a Form 1098-VLI?

For 2025, lenders had transitional relief and could provide the interest figure by other means. From tax year 2026, lenders receiving $600 or more of qualifying interest on a loan must furnish the form. If you qualify but receive nothing, contact your lender and keep your own interest records — the deduction turns on the loan and vehicle facts, not on whether a form arrived.

Can I claim it for 2025 even though the final rules came out in September 2026?

Yes. The final regulations apply to taxable years beginning after December 31, 2024, so qualifying 2025 interest is covered. The November 9, 2026 effective date is the rulebook’s effective date, not the start of the deduction.

Does the deduction apply to state taxes?

This guide covers the federal deduction only. Whether your state follows the federal treatment depends on your state’s law — check it separately, and do not assume a federal deduction automatically reduces your state bill.

The Bottom Line

The car loan interest deduction is real, useful, and narrower than its nickname suggests. It rewards a specific purchase — a new, US-assembled car, bought with a first-lien loan after 2024, for personal use — with up to $10,000 of deductible interest a year through 2028, whether or not you itemize. For a typical $40,000 loan at 7%, that is worth roughly $568 in the first year at a 22% bracket: worth claiming, not worth overpaying for.

The two mistakes to avoid are assuming any new car qualifies, and rolling an old car’s debt into the new loan without noticing that the interest on that rolled-over amount is permanently non-deductible. Verify assembly, get the loan split in writing, keep the VIN and the lender’s statement — and the deduction takes care of itself at tax time.

Sources & Pricing Note

This article was checked against primary sources and re-verified line by line on October 26, 2026. The core rules come from the IRS and the final regulations themselves: T.D. 10054, published at 91 FR 57214 (September 8, 2026) (stated effective date November 9, 2026; applicability to taxable years 2025–2028) and republished in Internal Revenue Bulletin 2026-39; the IRS’s Schedule 1-A guidance and its Working Families Tax Cuts overview for the new deductions; and Notice 2025-57 for the 2025 transitional reporting relief. Practitioner analyses from KPMG and Krieg DeVault were used to cross-check the final regulations’ vehicle, loan, refinancing, personal-use, and phaseout rules, as was PwC’s analysis of the Form 1098-VLI reporting requirements, including the end of 2025 transitional relief. The Government Accountability Office’s report on the rule confirms the publication date, citation, and stated effective date. Negative-equity figures are from Edmunds’ Q2 2026 data via its July 16, 2026 release. Loan arithmetic in the worked examples was calculated from the stated principal, rate, and term (for example, $40,000 at 7.0% over 60 months = $792.05 a month, $2,580.66 of interest in year one); your lender’s figures will differ with your rate, term, fees, and payment timing. Tax law and IRS forms can change — verify the current Schedule 1-A and Form 1098-VLI instructions before you file.

• Internal Revenue Bulletin 2026-39 (T.D. 10054, final regulations): https://www.irs.gov/irb/2026-39_irb
• Federal Register, T.D. 10054: https://govinfo.gov/content/pkg/FR-2026-09-08/pdf/2026-18219.pdf
• IRS, Schedule 1-A — what to know about the new form: https://www.irs.gov/newsroom/schedule-1-a-additional-deductions-what-to-know-about-the-new-form
• IRS, Working Families Tax Cuts — individuals and workers: https://www.irs.gov/newsroom/working-families-tax-cuts-individuals-and-workers
• IRS, Notice 2025-57 (transitional reporting guidance), IRB 2025-45: https://www.irs.gov/irb/2025-45_IRB
• GAO report on the rule (B-338735): https://www.gao.gov/products/b-338735
• KPMG TaxNewsFlash 2026-207, final regulations under sections 163 and 6050AA: https://kpmg.com/kpmg-us/content/dam/kpmg/taxnewsflash/pdf/2026/09/26207.pdf
• Krieg DeVault, Treasury and IRS finalize car loan interest deduction and lender reporting requirements: https://www.kriegdevault.com/index.php/insights/treasury-and-irs-finalize-car-loan-interest-deduction-and-lender-reporting-requirements/pdf
• PwC, Form 1098-VLI reporting: https://www.pwc.com/us/en/tax-services/publications/insights/assets/pwc-final-regs-set-reporting-requirements-for-vehicle-loan-interest.pdf
• Final Form 1098-VLI and instructions: https://sovos.com/regulatory-updates/trr/irs-publishes-final-1098-vli-form-instructions/
• Final-regulations summary (vehicle, loan, and phaseout rules): https://sw-cpas.com/car-loan-interest-deduction/
• Edmunds Q2 2026 negative-equity release: https://www.globenewswire.com/news-release/2026/07/16/3328706/0/en/Q2-New-Vehicle-Purchases-with-Negative-Equity-Trade-Ins-Hit-Record-Monthly-Payments-and-Interest-Costs-Edmunds-Reports.html

Last updated: October 2026

About the Author

Written by William, founder and editor of MotorAmaze, where he covers electric vehicles, car prices, financing, and insurance for US and UK readers. Every tax figure in this guide was checked against the final IRS regulations and authoritative practitioner summaries — and this guide is general information, not tax advice for any individual return.