At Sullivan & Company CPA Inc., our philosophy has always been to deliver clarity rather than jargon. The tax code is fluid, and recent legislative changes under the “One Big Beautiful Bill Act” have introduced a temporary below-the-line deduction that requires careful attention. For tax years 2025 through 2028, taxpayers may be eligible to deduct interest paid on loans for qualified passenger vehicles.

While this provision offers potential relief, the specific eligibility criteria—particularly regarding income thresholds and vehicle origin—make it a matter of strategic compliance rather than a blanket benefit. Below, we break down the nuances of this regulation for individuals, trusts, and estates.

Overview of the Provision

Effective for loans originated after December 31, 2024, this deduction is designed to incentivize the purchase of new, American-assembled vehicles. It acts as a reduction to taxable income, meaning it is accessible whether you itemize deductions or utilize the standard deduction. The deduction is claimed on a new schedule attached to the Form 1040 filing, requiring the vehicle’s VIN for validation.

Taxpayer Eligibility and Caps

For our clients managing complex financial pictures, understanding the limitations of this deduction is vital to avoid compliance errors.

• Eligible Entities: Beyond individuals, certain trusts, estates, and disregarded entities meeting specific criteria may claim this deduction. This is particularly relevant for families utilizing trust structures for asset management.
• The Cap: The deduction is limited to $10,000 annually per tax return. For those married filing separately, the cap remains $10,000 per individual.
• Income Phaseouts: This is a critical factor for high-net-worth households. The benefit begins to phase out for taxpayers with a modified Adjusted Gross Income (AGI) exceeding $150,000 (or $250,000 for married couples filing jointly).

If your modified AGI exceeds these thresholds, this deduction may be reduced or eliminated entirely. We recommend reviewing your projected AGI with us to determine viability.

Qualified Vehicles and Manufacturing Requirements

The legislation aligns tax benefits with domestic manufacturing support. To qualify, the vehicle must be new, have a gross vehicle weight rating under 14,000 pounds, and be assembled in the United States. This includes cars, SUVs, minivans, and pickup trucks.

Because “final assembly” is a strict requirement, it is prudent to verify the vehicle’s origin before purchase. You can confirm the assembly location using the NHTSA decoder here: Welcome to VIN Decoding : provided by vPIC

Usage Requirements and Interest Types

The Personal Use Test

To qualify, you must anticipate using the vehicle for personal purposes more than 50% of the time at the moment of purchase. Notably, the regulations do not require adjustments in future years if that personal-use percentage decreases, provided the initial intent was valid.

Mixed-Use Scenarios

For business owners and freelancers who use a vehicle for both personal and professional tasks, the interest deduction becomes a bifurcated calculation:

• Business Use: Interest allocable to business use is claimed as a standard business expense.
• Personal Use: The remaining interest may be claimed under the new Schedule 1-A, proportionally reduced based on usage.

Qualifying Financial Instruments

Not all debt is treated equally under this statute.

• Acceptable: Interest on personal loans from independent lenders (banks, credit unions) secured by the vehicle. Interest related to service plans, sales tax, and vehicle fees may also qualify.
• Excluded: Interest paid on leases does not qualify. Furthermore, intrafamily loans—loans from family members—are strictly excluded.

Documentation and Reporting

Defensible results rely on accurate documentation. Lenders are required to file the new Form 1098-VLI if they receive at least $600 in interest. This form will detail borrower and loan data. For the 2025 tax year, the IRS is permitting lenders to issue a statement of interest paid in lieu of the official form.

As we navigate these changes, our goal remains to help you preserve wealth and maintain compliance without unnecessary stress. If you are considering a vehicle purchase and want to discuss how this fits into your broader tax strategy, please reach out to our Burlingame office.