For decades, interest on personal car loans was not tax-deductible for the average American. However, thanks to the One, Big, Beautiful Bill, that is changing.

On December 31, 2025, the Treasury Department and the IRS released crucial new guidance (IR-2025-129) regarding the “No Tax on Car Loan Interest” provision. If you are planning to buy a new vehicle or recently financed one, this new deduction could save you thousands of dollars.

Here is everything you need to know about the new car loan interest deduction and how to qualify:

What is the New Car Loan Interest Deduction?

Under the new regulations, taxpayers can now deduct interest paid on loans used to purchase new, made-in-America vehicles for personal use.

The most significant advantage of this provision is its accessibility: this deduction applies to both taxpayers who take the standard deduction and those who itemize. This “above-the-line” style benefit ensures that even if you don’t have enough expenses to itemize, you can still lower your taxable income through your auto loan interest.

Who is Eligible for the Deduction?

The IRS has set specific criteria to ensure the deduction supports domestic manufacturing and personal transportation. To qualify, your vehicle and loan must meet these requirements:

1. Made-in-America: The vehicle’s final assembly must have occurred in the United States. The IRS guidance provides specific rules for determining assembly locations.

2. New Vehicles Only: The deduction applies to interest on loans incurred after December 31, 2024, for the purchase of new vehicles.

3. Personal Use: The vehicle must be intended for personal, rather than strictly business, use (business vehicles often fall under different depreciation and expense rules).

4. Deduction Limit: There is an annual deduction limit of $10,000 per taxpayer.

What This Means for Lenders

If you are a lender or a financial institution, the IRS has also issued transition relief and reporting requirements. Lenders are required to file information returns with the IRS to report the interest received. This reporting is vital because it allows the IRS to verify the interest paid and enables taxpayers to claim the benefit on their tax returns accurately.

Key Dates to Remember

• Loan Start Date: Must be after December 31, 2024.

• Public Comment Period: The IRS is inviting public comments on these proposed regulations until February 2, 2026.

• 2025 Tax Season: Taxpayers should keep meticulous records of their 2025 interest payments to be ready for the upcoming filing season.

How to Claim the Deduction

While the IRS is still finalizing the exact forms for the 2025 tax year, you should start preparing now by:

• Verifying your VIN: Check if your vehicle was assembled in the U.S.

• Saving your Loan Statements: Keep track of exactly how much interest you pay each month.

• Consulting a Professional: Tax laws are evolving rapidly under the One, Big, Beautiful Bill. Speak with a tax advisor to ensure you maximize your savings.