A New Tax Break for Car Buyers: Understanding the Car Loan Interest Deduction

For decades, taxpayers have not been able to deduct interest paid on personal car loans. In fact, since 1985, car loan interest has generally only been deductible when the vehicle was used for business purposes, such as in a Schedule C sole proprietorship. That long-standing rule is changing—at least temporarily—starting in 2025.

A new provision under the One Big Beautiful Bill Act (OBBBA) introduces a federal tax deduction for car loan interest, creating a potential tax benefit for consumers who purchase certain new vehicles. While this deduction won’t apply to everyone, it’s an important change that many taxpayers should be aware of as they consider vehicle purchases over the next few years.

What Is the Car Loan Interest Deduction?

Beginning January 1, 2025, eligible taxpayers may deduct up to $10,000 of interest paid on a qualifying car loan. This provision applies only to new vehicles purchased between January 1, 2025, and December 31, 2028. Used vehicles do not qualify for this deduction, and the vehicle must undergo final assembly in the United States.

This deduction is also subject to income limits. The phaseout begins at a modified adjusted gross income (MAGI) of $100,000 for single filers and $200,000 for married couples filing jointly. Taxpayers above those thresholds may see the deduction reduced or eliminated.

Why This Deduction Is Different

One of the most notable features of this new tax break is that it is an “above-the-line” deduction. That means you can claim it whether you take the standard deduction or itemize your deductions. In practical terms, the interest you pay on a qualifying car loan—up to the $10,000 limit—reduces your taxable income dollar for dollar.

It’s also important to note that this deduction applies to federal income tax only. State and local tax rules may differ, and you may still owe state or local tax on your full income amount.

Who May Benefit

If you purchase a new, qualifying vehicle and your car loan originates on or after January 1, 2025, you may be eligible for this deduction. This could be especially helpful for taxpayers who finance vehicles with higher interest rates or longer loan terms, as interest costs can add up quickly over time.

That said, because this provision is temporary, timing matters. The deduction is retroactive to January 1, 2025, but it expires at the end of 2028 unless extended by future legislation.

What You’ll Need at Tax Time

To claim this deduction, documentation will be important. Your lender will be required to send you a statement—similar to a mortgage interest statement—showing the amount of interest you paid during the year along with the vehicle’s VIN. You’ll report this information on Schedule 1-A of your Form 1040 when filing your federal tax return.

Final Thoughts

The Tax Deduction on Car Loan Interest is just one of many provisions included in the broader OBBBA, and additional IRS guidance and implementation details are expected as the law rolls out. As with any new tax rule, the real impact depends on your individual situation.

If you’re considering purchasing a new vehicle or want to understand how this deduction may affect your tax return, we’re here to help. If you have questions, feel free to reach out by phone at 269-449-8277 or by email at twoteacherstax@gmail.com. We’re always happy to help you make sense of the tax changes that matter to you.

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