What is the 2026 car loan interest deduction?

The OBBBA (One Big Beautiful Bill Act, signed July 4, 2025) created a new above-the-line federal income tax deduction for interest paid on auto loans for new US-assembled vehicles. You can deduct up to $10,000 of qualifying vehicle loan interest per tax year on your Schedule 1. The deduction applies to tax years 2025 through 2028.

Which vehicles qualify for the car loan interest deduction?

To qualify, the vehicle must be: (1) new — not a used vehicle, (2) a passenger vehicle (not commercial or heavy-duty trucks), (3) purchased after December 31, 2024, and (4) finally assembled in the United States. You can verify US assembly by checking your VIN — vehicles with VINs starting with 1, 4, or 5 are typically US-assembled. Use the NHTSA VIN decoder to confirm. The loan must be secured by the qualifying vehicle.

Is there an income limit for the car loan interest deduction?

Yes. The deduction phases out starting at MAGI of $100,000 for single filers and $200,000 for married filing jointly. The phase-out rate is 10% per $1,000 of MAGI above the threshold, so at $200,000 (single) or $300,000 (MFJ), the deduction is fully eliminated. The maximum deduction before phase-out is $10,000.

Where do I claim the car loan interest deduction on my tax return?

Claim it on Schedule 1-A (Form 1040), which flows to Schedule 1, line 25. Your lender must issue Form 1098-VLI (Vehicle Loan Interest Statement) by January 31 if you paid $600 or more in qualifying interest during the year. Keep records of your loan documents, VIN, and purchase date. This is an above-the-line deduction — it reduces your AGI even if you take the standard deduction.

Can I deduct car loan interest on a used vehicle?

No. The deduction only applies to new vehicles purchased after December 31, 2024. Used vehicles — even if US-assembled — do not qualify. If you financed a used car, the interest is not deductible under this provision (though it may be deductible as a business expense if the vehicle is used for business purposes).

Car Loan Interest Deduction Calculator 2026 — OBBBA $10,000 Auto Loan Tax Break

Your auto loan details

Filing status

Current auto loan balance

The remaining principal on your qualifying vehicle loan

Annual interest rate (%)

Found on your monthly statement or Form 1098-VLI

Your MAGI(phase-out starts at $100,000)

Federal marginal tax bracket

VIN prefix check(first character of your VIN)

VINs starting with 1, 4, or 5 = US-assembled. Starts with J, K, W etc. = not eligible.

Deduction result

2026 auto loan interest deduction

$2,275

Federal tax saving

~$501

$2,275 deduction × 22% bracket = $501 saved

Effective interest rate after deduction: 5.07% (was 6.50%)

Calculation breakdown

Estimated annual interest paid	$2,275.00
OBBBA cap (maximum deduction)	$10,000
Interest after cap	$2,275
2026 deductible amount	$2,275
Tax saving at 22% bracket	$501

Phase-out schedule (Single)

MAGI $100,000Phase-out begins — $10,000 max

MAGI $150,000Halfway through phase-out — $5,000 max

MAGI $200,000Fully eliminated — $0 max

Qualifying checklist

•New vehicle (not used) purchased after Dec 31, 2024

•Finally assembled in the United States (VIN starts with 1, 4, or 5)

•Passenger vehicle — not commercial or heavy-duty trucks

•Loan is secured by the qualifying vehicle

•Available 2025–2028 only (OBBBA sunset)

Disclaimer

This tool provides estimates for educational purposes only and is not tax advice. The OBBBA car loan interest deduction is new and IRS guidance is still evolving. Results use 2026 federal figures and do not account for state taxes, leased vehicles, or your full tax situation. Consult a qualified tax professional before claiming this deduction.

How this is calculated

The car loan interest deduction follows the OBBBA rules under IRC § 163(h)(4):

Annual interest = loan balance × annual interest rate (simple interest approximation for the first year).
Capped interest = min(annual interest, $10,000). The $10,000 cap is per return, not per vehicle.
Phase-out threshold: $100,000 (single/HOH/MFS) or $200,000 (MFJ). Phase-out rate: 10% per $1,000 of MAGI above the threshold.
Phase-out amount = min(capped interest, capped interest × overage in thousands × 10%).
Final deduction = capped interest − phase-out amount.
Tax saving = final deduction × marginal tax bracket. Effective interest rate = annual rate × (1 − deduction/interest × bracket).

Sources

Reviewed against 2026 figures · Last updated June 2026

zhisan

Independent Developer

Full-stack developer passionate about building useful tools for the developer community. Creates free, privacy-focused web applications that solve everyday coding problems.

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What is Car Loan Interest Deduction Calculator?

The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, created a new federal income tax deduction for interest paid on auto loans for new US-assembled vehicles under IRC § 163(h)(4). You can deduct up to $10,000 of qualifying vehicle loan interest per year on your federal tax return — even if you take the standard deduction. This above-the-line deduction applies to tax years 2025 through 2028. The deduction works as follows: first, your annual auto loan interest is capped at $10,000. Then, if your modified adjusted gross income (MAGI) exceeds $100,000 (single/head of household) or $200,000 (married filing jointly), the deduction phases out at a rate of 10% per $1,000 of MAGI above the threshold. At $110,000 MAGI (single), only $9,000 is deductible; at $200,000 (single), the deduction is fully eliminated. For MFJ filers, the phase-out runs from $200,000 to $300,000. Your vehicle must be: (1) new (not used), (2) a passenger vehicle, (3) purchased after December 31, 2024, and (4) finally assembled in the United States. Check your VIN — if the first character is 1, 4, or 5, it was likely US-assembled. Confirm using the NHTSA VIN decoder at vpic.nhtsa.dot.gov. Your lender will issue Form 1098-VLI (Vehicle Loan Interest Statement) if you paid $600 or more in qualifying interest.

How to Use

Enter your current auto loan balance and annual interest rate (found on your loan statement or Form 1098-VLI).
Enter your estimated MAGI to check if the phase-out applies (starts at $100,000 single / $200,000 married).
Select your filing status and federal tax bracket to calculate your actual tax saving.
Review your deduction, after-tax effective interest cost, and estimated savings vs. not claiming.
Check the VIN prefix guide to confirm your vehicle qualifies as US-assembled.

Why Use This Tool?

Deduct up to $10,000 of auto loan interest per year — above-the-line, no need to itemize (IRC § 163(h)(4))

Applies to loans on new US-assembled vehicles purchased after December 31, 2024

Reduces your AGI, which may also lower MAGI-tested benefits (Roth IRA eligibility, IRMAA, NIIT)

Valid for tax years 2025, 2026, 2027, and 2028 (OBBBA sunset provision)

Your lender issues Form 1098-VLI — just like the 1098 mortgage interest form

Tips & Best Practices

Check your VIN before assuming your vehicle qualifies — the first digit must be 1, 4, or 5 for US assembly. Use the NHTSA VIN decoder (vpic.nhtsa.dot.gov) to confirm.
If your loan interest exceeds $10,000 (high-balance loans), the deduction is capped. Consider paying extra principal to reduce future interest while still staying within the deductible range.
The deduction phases out by 10% per $1,000 of MAGI over the threshold — at MAGI $110,000 (single), only $9,000 is deductible; at $200,000 the deduction is gone.
Claim on Schedule 1-A (above-the-line). Your lender provides Form 1098-VLI; keep your VIN records and purchase date in case of an audit.
If you also have a home office or SE retirement plan, these AGI reductions could compound — lower AGI from 401k contributions → lower MAGI → larger car loan deduction.

Frequently Asked Questions

Does my car qualify for the loan interest deduction?

Your vehicle must be: (1) new — not used, (2) a passenger vehicle, (3) purchased after December 31, 2024, and (4) finally assembled in the United States. Check your VIN — if the first character is 1, 4, or 5, it was likely US-assembled. Confirm using the NHTSA VIN decoder at vpic.nhtsa.dot.gov.

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

Yes. The car loan interest deduction is an above-the-line deduction on Schedule 1-A. It reduces your AGI regardless of whether you itemize or take the standard deduction. This is a key advantage over the mortgage interest deduction which requires itemizing.

What if my MAGI is above $100,000 (single)?

The deduction phases out at 10% per $1,000 of MAGI above the threshold. For example, at $105,000 MAGI (single), your $10,000 maximum deduction is reduced by $5,000 (5 × 10%) to $5,000. At $200,000 MAGI (single), the deduction is fully eliminated.

Do I need Form 1098-VLI to claim the deduction?

Your lender is required to issue Form 1098-VLI (Vehicle Loan Interest Statement) if you paid $600 or more in qualifying interest. Wait for this form before filing. If your lender doesn't provide it, you can still claim the deduction using your own records (loan statements, purchase agreement, VIN documentation).

What does this calculator not cover?

This calculator does not cover state-level car loan interest deductions, the impact on state AGI calculations, leased vehicles (which may have different rules), or the interaction with other vehicle-related tax benefits (electric vehicle credits, etc.). It is an educational tool; consult a tax professional for your actual filing.

Real-world Examples

Single filer, $35,000 loan balance, 6.5% rate, $75,000 MAGI, 22% bracket

A single filer with a $35,000 auto loan on a new US-assembled vehicle. Their MAGI is below the phase-out threshold.

Input

Loan balance:        $35,000
Annual rate:         6.5%
MAGI:                $75,000 (single)
Bracket:             22%

Step 1 — Annual interest:
$35,000 × 6.5% = $2,275

Step 2 — Cap check:
$2,275 < $10,000 cap → no cap applied

Step 3 — Phase-out check:
$75,000 < $100,000 threshold → no phase-out

Output

Deduction:           $2,275
Tax saving:          $2,275 × 22% = $501
Effective rate:      6.5% × (1 − 22%) = 5.07%

Without deduction: pay $2,275 in interest
With deduction:    effective cost is $1,774
Annual savings:    $501

Data sources: Car loan interest deduction: IRC § 163(h)(4), as enacted by the One Big Beautiful Bill Act (OBBBA, 2025). Phase-out thresholds and rates: OBBBA statutory text. Form 1098-VLI: IRS. VIN assembly verification: NHTSA. This calculator is maintained by Zhisan, who built it using IRS and Congressional first-party documentation. Last reviewed 2026. This tool is for informational and educational purposes only and does not constitute tax advice. Consult a qualified tax professional or CPA for advice specific to your situation.