What Is the New Auto Loan Interest Deduction and Do You Qualify?

You're paying $749 every month on your new car. That's the average payment in 2025, and most of it goes toward interest - rates on new vehicles sat at 6.8% through Q2 2025, according to Experian.

Congress changed that math. The One Big Beautiful Bill Act, signed July 4, 2025 as Public Law 119-21, created a brand-new auto loan interest deduction - something that hasn't existed since the 1980s. You can now write off up to $10,000 in vehicle loan interest per year through 2028.

Four requirements get you there: the vehicle must be new, final assembly must happen in the United States, the purchase must be for personal use, and the loan must be a first lien on the vehicle. Clear all four and the IRS lets you claim the interest whether you itemize or take the standard deduction.

It's above-the-line. That means the deduction reduces your adjusted gross income before most other deductions factor in. You get the standard deduction too - both at once.

Income limits do apply. Single filers start losing the benefit at $100,000 MAGI and lose it entirely at $150,000. Joint filers have more runway - the phase-out doesn't start until $200,000 and doesn't finish until $250,000.

How the Auto Loan Interest Deduction Works

Here's the number that most people don't think about until they're already at the filing screen: roughly 87% of tax filers took the standard deduction in 2025. The OBBBA simultaneously raised the standard deduction itself - to $15,750 for single filers and $31,500 for joint filers - which makes switching to itemized even less appealing. The above-the-line structure means those 87% still get the vehicle interest deduction. No choosing between one or the other.

The maximum is $10,000 per year, available for 2025 through 2028. Congress framed this as a temporary measure to support domestic auto manufacturing and help middle-income buyers absorb higher vehicle costs.

The Joint Committee on Taxation estimated the deduction will cost $31 billion from fiscal years 2025 through 2034. That ranks it among the top quarter of the most expensive provisions in the entire One Big Beautiful Bill Act.

On December 31, 2025, Treasury and the IRS published official guidance under IR-2025-129, alongside proposed regulations (REG-113515-25) in the Federal Register. Notice 2025-57 gave lenders transitional relief for 2025 reporting - they could use a simplified year-end statement instead of the formal new IRS form, which becomes mandatory starting in 2026.

Your lender tracks what you pay and reports it. Understanding how your payment splits between principal and interest each month helps you verify the number before you file. You claim the deduction on Schedule 1-A (Form 1040), Additional Deductions. The form requires your vehicle identification number - the IRS uses it to verify US assembly.

Auto Loan Market Numbers Worth Knowing

The average new car price reached $50,080 in September 2025, according to Kelley Blue Book - the first time the figure crested $50,000. That's 3.1% above 2024. Prices climbed further to $50,326 by December before pulling back to $49,353 in February 2026.

The average auto loan rate sat at 6.8% for new vehicles and 11.54% for used in Q2 2025 (Experian). At the top end of the credit range - scores above 780 - rates averaged 5.18%. Drop below 580 and that number climbs to 15.81%. More than three times as much interest on the same loan amount.

Monthly payments followed prices up. The average new car payment hit $749 in Q2 2025, on a loan term averaging 68 months. A typical 72-month loan at current rates generates roughly $9,500 in total interest over the life of the loan.

More than 80% of new vehicle buyers finance. Americans bought about 15 million new vehicles in 2024, and most of them signed a loan document at the dealership. The average amount financed was $41,983 as of Q2 2025 - not a small number to carry at 6.8% interest.

Run the math on that average loan: at 6.8% over 60 months, the first year generates roughly $3,100 in interest charges. For someone in the 22% tax bracket, that's $682 off the federal tax bill. Show up at the filing screen with that deduction and you're not looking at a refund bump - you're looking at a real reduction in what you owe.

Who Qualifies for the Auto Loan Interest Deduction

Miss any single requirement and the whole deduction disappears. Not reduced. Gone. This isn't a tiered system where partial compliance gets partial credit.

Vehicle Requirements

• Must be a new vehicle. The IRS defines "new" as original use beginning with you. A dealer demo or loaner titled to someone else first doesn't qualify, even with low mileage. The requirement is about ownership history, not miles on the odometer.
• Final assembly in the United States. Toyota Camrys built in Japan don't qualify. The Ford Maverick assembles in Mexico - same well-known brand, no deduction. Check the window sticker or the certification label on the driver's door jamb; both list "Final Assembly Point." You can also run your VIN through the NHTSA VIN Decoder to confirm the assembly country. A quick shortcut: VINs starting with 1, 4, or 5 generally mean US-assembled; 2 points to Canada; 3 to Mexico.
• Under 14,000 pounds gross vehicle weight rating. Most cars, SUVs, pickup trucks, minivans, and motorcycles clear this. Commercial trucks typically don't.
• Personal use only. A vehicle used for business doesn't qualify under this provision. Mixed-use vehicles get complicated - the personal-use percentage of interest would theoretically apply, but that calculation requires careful recordkeeping and may not survive audit without strong documentation.

Loan Requirements

• Originated after December 31, 2024. Loans from 2024 or earlier are out. If you refinanced a pre-2025 loan during the 2025-2028 window, the refinanced portion of the original balance qualifies - but cash-out amounts above your original balance don't.
• First lien on the vehicle. The vehicle serves as collateral. Unsecured personal loans used to buy a car don't qualify. Second liens and subordinate financing don't either.
• From a third-party lender. Family loans don't qualify. The lender must be a bank, credit union, or auto finance company with no related-party relationship to you.

Income Requirements

Your modified adjusted gross income determines how much you can actually claim. For every $1,000 over the threshold, the deduction shrinks by $200. A $20,000 overage wipes out $4,000 of deduction - which, depending on how much interest you paid, may eliminate most or all of it.

The arithmetic on a partial phase-out isn't always obvious. Investment income, retirement distributions, and self-employment earnings all feed into MAGI in ways that catch people off guard. Our MAGI calculation guide for the auto loan deduction walks through the formula step by step by filing status.

What This Deduction Saves in Real Numbers

The deduction's dollar value depends on your tax bracket and what you actually paid in interest. Run these four scenarios against your own situation.

Single Filer - $75,000 Income, 22% Bracket

You financed a $42,000 SUV assembled in Alabama. Loan terms: 6.8% interest, 60-month term. Year-one interest paid: $2,723. Your income falls below the $100,000 threshold - full deduction available.

$2,723 x 22% = $599 off your federal tax bill. That's not a credit; it's a deduction that first lowers taxable income by $2,723, which then produces the $599 in savings at your bracket rate.

Married Couple - $180,000 Income, 24% Bracket

A $50,000 pickup assembled in Michigan. Loan terms: 6.5% interest, 72-month term. Year-one interest: $3,145. Combined income sits below the $200,000 joint threshold. Full deduction at 24%: $3,145 x 24% = $755 back. Clean scenario - both spouses on the same return, income under the limit, US-assembled vehicle.

Single Filer - $120,000 Income, Partial Phase-Out

You financed a $45,000 sedan assembled in Ohio. Same 6.8% rate, 60-month term. Year-one interest: $2,913.

Your income exceeds $100,000 by $20,000. That's 20 increments of $1,000, each cutting the deduction by $200 - a $4,000 total reduction. Since your actual interest is only $2,913, the math works differently than most people expect. You subtract the $4,000 reduction from the deduction cap - but since your interest ($2,913) is less than $4,000, your remaining deductible amount is $913 ($2,913 minus $2,000, which is the portion of the reduction that actually applies to your interest). Tax savings at 24%: $913 x 24% = $219.

The phase-out chews through most of the benefit at $120,000. Modest savings, but still real.

What Actually Gets You to the $10,000 Cap

To pay $10,000 in interest in a single year, you'd need roughly a $112,000 loan at 6.8% over 60 months. The average financed amount is $41,983. The Congressional Budget Office noted the cap exists mainly to control the provision's budget cost - most borrowers will never come close to it.

Which Vehicles Meet the US Assembly Requirement

No official IRS list of qualifying vehicles exists. You verify through the window sticker, the door jamb label, or the NHTSA VIN Decoder.

Worth knowing before you shop: the same model name can fall on either side of the rule depending on which factory built it. A Honda Civic Hatchback assembled in Greensburg, Indiana qualifies. A Honda Civic Sedan assembled in Ontario, Canada doesn't. Same brand, nearly identical specs, opposite answer based entirely on the plant address.

Vehicles Commonly Assembled in the United States

• Ford: F-150 (Dearborn, MI and Claycomo, MO), Mustang (Flat Rock, MI), Explorer (Chicago, IL)
• GM: Silverado (Fort Wayne, IN), Corvette (Bowling Green, KY), Cadillac Escalade (Arlington, TX)
• Stellantis: Jeep Wrangler (Toledo, OH), Ram 1500 (Sterling Heights, MI), Dodge Durango (Detroit, MI)
• Tesla: Model 3 (Fremont, CA), Model Y (Fremont, CA and Austin, TX)
• Toyota: Camry (Georgetown, KY), Tundra (San Antonio, TX), Highlander (Princeton, IN)
• Honda: Accord (Marysville, OH), Pilot (Lincoln, AL), Ridgeline (Lincoln, AL), Civic Hatchback (Greensburg, IN)
• Nissan: Altima (Smyrna, TN), Rogue (Smyrna, TN)

Popular Models Assembled Outside the United States

• Honda Civic Sedan: Ontario, Canada. The Hatchback qualifies; the Sedan doesn't. Always check the specific trim and model year before assuming.
• Toyota Corolla: Japan
• Mazda CX-5: Japan
• Subaru Outback: Japan
• Ford Maverick: Mexico
• Volkswagen Jetta and Tiguan: Mexico. The VW Atlas from Chattanooga, TN does qualify.
• BMW 3 Series: Germany. The BMW X5 from Spartanburg, SC qualifies. Always verify before you sign. Two vehicles from the same manufacturer with nearly identical feature sets can land on opposite sides of the rule based entirely on the factory address. Buying an electric vehicle? The assembly requirement applies identically to EVs - no special carve-outs. Our full breakdown of which electric vehicles qualify for the auto loan interest deduction lists current models by plant location.

How to File for the Auto Loan Interest Deduction

The process differs between 2025 and subsequent years. Know which set of rules applies before you start.

Your 2025 Tax Return

Under IRS Notice 2025-57, lenders received transitional relief for the 2025 tax year. They don't need to use the formal new IRS form. Your lender must still provide documentation showing total interest paid in 2025, your loan origination date, the vehicle's VIN, and confirmation the vehicle is a qualifying passenger vehicle. That documentation may arrive as a year-end account summary, through your online portal, or as cumulative figures on monthly statements.

Steps to file:

1. Collect your lender's 2025 interest statement
2. Verify the interest figure against your own payment records
3. Complete Schedule 1-A (Form 1040), Part IV
4. Enter your vehicle's VIN exactly as it appears on your title and loan documents - all 17 characters
5. Calculate any income phase-out reduction if your MAGI exceeds the threshold
6. Attach Schedule 1-A to your Form 1040

Your 2026 Through 2028 Returns

Starting with 2026 returns, lenders must use Form 1098-VLI. It functions like Form 1098 for mortgage interest. Your lender sends it by January 31 if you paid $600 or more in qualifying interest during the year.

Box 1 shows total interest received. Box 4 lists your VIN. The IRS receives a copy directly from your lender - your figure and the lender's must match exactly. A mismatch triggers automatic review.

Records to Keep

Save these with your return for at least three years (six years if your deduction was large relative to your income):

• Form 1098-VLI or the 2025 alternative statement from your lender
• Your original loan agreement
• Monthly payment statements
• Vehicle purchase documents showing the VIN
• Window sticker or door jamb label confirming US assembly

The Four-Year Window and Your Active Loans

The deduction has a hard end date. After December 31, 2028, vehicle loan interest returns to non-deductible personal interest status - regardless of when you took out the loan.

Tax years where you can claim it: 2025, 2026, 2027, and 2028. Four years, not four months. Loans that extend past 2028 lose deductibility on interest paid after that year-end. The window follows the calendar, not your repayment schedule.

Timing matters more than most buyers realize. Finance in January 2025 on a 60-month loan and you're deducting interest through December 2028 - 48 months of the 60. Finance that same vehicle in December 2028 and you get one month of deductible interest. The remaining 59 payments aren't deductible. Earlier purchases give you more deduction years on the same loan.

Will Congress extend it? The CBO estimated making the deduction permanent would add $66 billion to its 10-year cost, bringing the total to $97 billion. That's a significant line item in any budget negotiation. Count on the four-year window you have now. If an extension passes, it's upside - not a planning assumption.

How Your State Handles the Deduction

Federal treatment is settled. State treatment depends on how your state's tax code connects to federal law.

Most states start their income tax calculation from federal adjusted gross income. If yours does, the auto loan interest deduction flows through automatically - your lower federal AGI becomes lower state taxable income too. California, New York, Massachusetts, Oregon, and many others work this way. No separate action needed on your state return.

Some states don't adopt federal changes automatically. They might use a prior-year federal AGI baseline or add back specific deductions. If your state hasn't formally conformed to the OBBBA provisions, you'll get the federal benefit but zero state savings. Check your state tax agency's guidance or ask a tax professional - conformity decisions sometimes happen late in the tax season.

Nine states have no individual income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. The federal deduction still applies to residents, but there's no state-level benefit to layer on top.

Community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin) have separate rules for married couples filing separately. Income and deductions can split between spouses under state law even if only one spouse is on the loan. Run this past a tax professional before filing separately in a community property state. For a state-by-state breakdown, see our guide to state auto loan deduction conformity.

Mistakes That Kill the Deduction

Wrong VIN or No VIN on Schedule 1-A

Every character matters. The IRS uses your VIN to verify US assembly. A single wrong digit means the system can't confirm the vehicle qualifies. Copy the VIN exactly from your title, registration, and loan documents. If those documents show different VINs (clerical errors at the dealer do happen), resolve it with the DMV before you file - don't guess which one is correct.

Claiming the Deduction on a Used Vehicle

Original use must begin with you. A 2024 model year vehicle sold to you in 2025 can feel new. But if any prior owner held title first, the vehicle fails the requirement. Dealer demos and loaners don't get an exception, even with low mileage. Our guide on why used car purchases don't qualify for this deduction covers the exact IRS language and the edge cases people ask about most often.

Assembly Location You Assumed, Didn't Verify

After you've signed, it's too late to fix. The window sticker and door jamb label both list the final assembly point. Check them before signing - specifically before you drive off the lot, while you still have options. Many buyers assume US brands assemble in the US. They don't, always.

Leased Vehicles

Leasing isn't borrowing. There's no loan on a leased vehicle, so there's no "vehicle loan interest" to deduct. This holds even when your lease structure includes a money factor that functions economically like interest. The provision requires an actual loan secured by the vehicle.

Business Use Vehicles

Personal use only qualifies under this provision. A vehicle used primarily for business falls under separate business deduction rules. Mixed-use vehicles land in a gray area - only the personal percentage of interest might theoretically apply, but the documentation burden is high and the savings may not justify the complexity.

Reporting More Interest Than You Paid

The IRS has your lender's copy. Starting in 2026, Form 1098-VLI goes directly from your lender to the IRS. Any mismatch between your return and what your lender reported triggers automatic review. For 2025, save all payment records. Report what you paid. Don't round up.

Skipping the Phase-Out Calculation

Taxpayers in the $100,000-$150,000 single or $200,000-$250,000 joint range sometimes claim the full deduction amount without applying the reduction formula. Schedule 1-A includes the phase-out calculation. Follow it. The IRS will catch the discrepancy against your reported MAGI and will either reduce or deny the deduction entirely.

Finance Now or Wait?

The deduction creates a time-limited incentive. It doesn't automatically make buying now the right call.

When Earlier Timing Works in Your Favor

• You already planned to buy within the next year or two. The deduction improves the economics of a decision you'd make anyway. It doesn't change the fundamental case for buying - it just makes a qualifying purchase more efficient from a tax standpoint.
• Your income falls under the phase-out threshold. Single filers under $100,000 and joint filers under $200,000 get the full benefit. Above those amounts, the advantage shrinks quickly and eventually disappears.
• You qualify for rates in the 5%-6% range. Credit scores above 720 typically access these rates. At that cost of money, the deduction covers roughly 20%-30% of your first-year interest charge.
• Your preferred vehicles already qualify under the assembly rule. If you were going to buy a US-assembled model anyway, the deduction adds value without requiring you to change what you want.
• Manufacturers are running strong incentives. Stacking rebates on top of the tax deduction maximizes total savings on a purchase you were already making.

When Waiting May Work Better

• The payment would stretch your budget. Monthly payments shouldn't exceed 15%-20% of take-home pay. A deduction saving $50-$100 per month in tax benefits doesn't fix a payment that's already too high.
• Your preferred vehicle doesn't qualify. Switching to a less desirable model to capture the deduction rarely makes sense. The tax savings don't justify settling on something that doesn't fit your actual needs.
• Your income already phases you out. Single filers over $150,000 and joint filers over $250,000 receive nothing from this provision. Timing doesn't change that.
• Rates could drop meaningfully. The Federal Reserve cut rates three times in late 2025, reducing the federal funds rate by 75 basis points to 3.50%-3.75% by year-end. A 1% drop on a $40,000 loan saves about $1,155 in total interest over the life of the loan - more than two years of deductions for most borrowers.
• Prices might moderate. Average transaction prices hit all-time highs in late 2025. If inventory builds or trade conditions shift, prices could ease. Waiting might save more through a lower purchase price than you'd gain from an extra year of deductions.

Four Ways to Get More From This Deduction

Time Your Purchase Month

December 2025 versus January 2026 changes how many deduction years you collect. A December 2025 purchase generates deductible interest across four calendar years (2025-2028). A January 2026 purchase generates three (2026-2028). An extra month of interest typically adds $200-$300 in deductions - not enough to drive a purchase decision on its own, but worth knowing if you're already close to pulling the trigger.

Consider the Loan Size Tradeoff

Financing more raises your interest paid - and potentially your deduction. But this trades financial efficiency for deduction size. You're still paying 78 cents in interest for every dollar of deduction at a 22% bracket. Run the actual numbers for your tax rate. The math rarely supports borrowing extra specifically to increase the deduction.

Married Filing Separately - Run Both Scenarios

The phase-out for married filing separately uses single-filer thresholds ($100,000-$150,000) rather than the joint thresholds. If one spouse earns $90,000 and the other earns $160,000, the lower earner could claim a full deduction by filing separately. The problem: filing separately eliminates other tax benefits (certain credits, deductions, and the married-filing-jointly standard deduction) and sometimes nets out worse. Run both scenarios with a tax professional before deciding. This isn't a strategy for every household - but for households with a wide income gap between spouses, it occasionally makes sense.

Multi-Vehicle Households

The $10,000 annual cap is per taxpayer, not per vehicle. Two qualifying loans can combine their interest toward that limit on a single return. Most households won't approach $10,000 even with two loans. But households financing two higher-value trucks or SUVs might get closer, especially in the first year when interest makes up a larger share of each payment.

The Bigger Financial Picture

A tax deduction is one number in a larger calculation. It shouldn't override sound financial basics.

Total cost of ownership matters more than any single tax line. Monthly payment, insurance, maintenance, fuel costs, and depreciation all outlast the deduction window. If those numbers work without the deduction, the deduction is upside. If they only work because of it, the purchase probably doesn't work at all.

Interest rate shopping beats deduction math. A 1% rate difference on a $40,000 loan over 60 months costs about $1,155 in total interest paid. Most borrowers' annual tax savings from this deduction run $400-$600. Getting a lower rate saves more over the loan life than two years of deductions combined. Lock in the best rate first, then add the deduction on top.

Opportunity cost deserves attention. Every dollar financing a depreciating vehicle isn't going toward investments. In 2025, with high-yield savings accounts returning 4%-5%, the case for financing primarily to capture a tax benefit rarely closes cleanly. If you need the vehicle, finance it as intelligently as possible. If you're buying mainly to capture a deduction, the benefit usually doesn't cover what you're giving up elsewhere.

What Legislative Changes Could Mean for Your Loan

The IRS released proposed regulations (REG-113515-25) on January 2, 2026, with a public comment period closing February 2, 2026. Open questions those regulations may address: lease buyouts, how refinanced amounts above the original balance are treated, documentation standards for proving US assembly, and state-by-state conformity decisions. Additional guidance could clarify or modify how the deduction applies in edge cases. Monitor IRS.gov for updates.

Congress could extend the deduction beyond 2028, modify the income thresholds, adjust the $10,000 cap, or change the US assembly requirement. Any such changes would typically apply to future tax years - not retroactively. A qualifying purchase made during 2025-2028 should remain protected for those years under current law, regardless of what happens later.

Your Pre-Filing Checklist

Before you claim the auto loan interest deduction, run through these five items. Missing any one of them is how the deduction gets disqualified or flags for review.

1. Confirm your vehicle's final assembly point. Check the door jamb label or run your VIN through the NHTSA VIN Decoder at vpic.nhtsa.dot.gov/decoder/. Don't assume based on brand name.
2. Locate your interest statement from your lender. For 2025, this may arrive as an account summary. Starting with 2026, it's Form 1098-VLI. Call your lender if you haven't received it by mid-February.
3. Calculate your MAGI before entering the deduction amount. If you're anywhere near the phase-out range - single filer at $100,000-$150,000 or joint filer at $200,000-$250,000 - run the reduction formula first.
4. Copy your VIN from your title or registration. All 17 characters. The form has no tolerance for guesses.
5. Keep your documentation for at least three years. Loan agreement, interest statement, vehicle purchase paperwork, and the window sticker if you kept it. If you're a lender managing Form 1098-VLI compliance for a vehicle loan portfolio, the Vehicle Loan Interest education center covers the reporting requirements, filing deadlines, and what the IRS expects under this new form.

Common Questions About the Auto Loan Interest Deduction

Is auto loan interest tax deductible in 2025?

Yes, for qualifying new vehicles financed after December 31, 2024. You can deduct up to $10,000 in auto loan interest per year from 2025 through 2028. The deduction is above-the-line - no itemizing required. You must meet income thresholds, use a US-assembled vehicle, and hold a first-lien loan from a third-party lender.

What income limit applies to the auto loan interest deduction?

Single filers under $100,000 MAGI get the full deduction. It phases out between $100,000 and $150,000 - reducing by $200 for each $1,000 over the threshold - and disappears above $150,000. For married couples filing jointly, the phase-out runs from $200,000 to $250,000.

Does a used car loan qualify for the interest deduction?

No. Original use must begin with you, the taxpayer claiming the deduction. Any prior ownership history disqualifies the vehicle - regardless of mileage, model year, or how the dealer positioned the sale.

How do I confirm my vehicle was assembled in the United States?

Check the Monroney sticker (window sticker) or the certification label inside the driver's door jamb. Both list "Final Assembly Point" with city and country. The free NHTSA VIN Decoder at vpic.nhtsa.dot.gov/decoder/ provides the same answer digitally. VINs starting with 1, 4, or 5 typically signal US assembly.

Can I deduct auto loan interest if I take the standard deduction?

Yes. Above-the-line means the deduction reduces your AGI before the standard deduction even applies. You claim both. This is the structural difference from itemized deductions, which compete with - and usually lose to - the standard deduction amount for most filers.

What form do I use to claim the auto loan interest deduction?

Schedule 1-A (Form 1040), Part IV - Additional Deductions. You'll enter your interest paid, your VIN, and work through any phase-out calculation based on your MAGI. For 2025, your lender may provide a simplified year-end statement instead of Form 1098-VLI, which becomes mandatory starting with the 2026 tax year.

Can an electric vehicle qualify for the auto loan interest deduction?

Yes, if it meets all the same requirements as any other vehicle: new, US-assembled, personal use, first-lien loan from a third-party lender. The law doesn't exclude EVs. But many popular EV models do assemble outside the US - verify before assuming your EV qualifies. Our guide to EV qualification under the auto loan interest deduction lists current models by assembly location.

Does refinancing a car loan preserve the interest deduction?

Refinancing a qualifying loan during 2025-2028 generally preserves deductibility for the refinanced balance. Cash-out refinancing that increases the loan above the original balance doesn't extend to the additional amount. Details are in our guide to refinancing and the auto loan deduction.

When does the auto loan interest deduction expire?

After tax year 2028. You can claim it for 2025, 2026, 2027, and 2028. Interest paid on qualifying loans after December 31, 2028 returns to non-deductible status. Active loans that extend past 2028 lose deductibility only on the post-2028 payments - the earlier years remain deductible.