OBBBA’s Dealership Customer Impact
How New Tax Laws Reshape Car Buying for Dealership Customers
The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, significantly impacts dealership customers by introducing a new, temporary federal tax deduction for car loan interest while simultaneously terminating existing federal tax credits for electric vehicles (EVs). These dual changes reshape the financial landscape for car buyers, encouraging the purchase of new, domestically assembled vehicles and potentially influencing the adoption rate of electric models.

Key Takeaways
How does the new car loan tax deduction work?
The new car loan tax deduction allows eligible taxpayers to deduct up to $10,000 in interest annually on new car loans from 2025 through 2028.
What vehicles qualify for the OBBBA car loan deduction?
Only new vehicles purchased for personal use and with final assembly in the United States are eligible for the car loan interest deduction.
When do EV tax credits expire under the OBBBA?
Federal tax credits for new and used electric vehicles expired September 30, 2025, due to the OBBBA.
New Car Loan Interest Deduction
A key provision of the OBBBA is the introduction of a federal tax deduction for interest paid on qualifying new car loans. From 2025 through 2028, eligible taxpayers can deduct up to $10,000 annually of interest. This deduction is designed to offer direct financial relief to consumers, particularly in an era of fluctuating vehicle prices and interest rates. A notable advantage is that this deduction is “above-the-line,” meaning it’s accessible to nearly all taxpayers, including those who choose not to itemize their deductions on their federal tax returns. This broad accessibility aims to maximize its impact on a wider range of car buyers.
To qualify for this valuable deduction, specific criteria must be met. The vehicle purchased must be brand new, meaning its original use begins with the taxpayer, and it must be intended for personal use rather than business or commercial purposes. Furthermore, a crucial requirement is that the vehicle’s final assembly must have taken place in the United States. This stipulation serves to bolster domestic manufacturing and support American jobs within the automotive industry. Buyers should be diligent in verifying the final assembly location, often identifiable through the Vehicle Identification Number (VIN) or dealership documentation.
While the $10,000 deduction sounds substantial, its actual benefit can vary based on a buyer’s income. The deduction begins to phase out for higher-income earners. Specifically, for single filers, the deduction amount starts to decrease once their modified adjusted gross income exceeds $100,000. For married couples filing jointly, this threshold is $200,000. The deduction is reduced by $200 for every $1,000 that a taxpayer’s income surpasses these thresholds, eventually being eliminated entirely for those significantly above these income levels. This tiered approach suggests that middle-income buyers might experience the most significant relative savings from this provision.
“The OBBBA introduces a new, temporary federal tax deduction of up to $10,000 annually for interest paid on qualifying new car loans from 2025 to 2028.”
Impact on Electric Vehicle Tax Credits
In a significant shift, the OBBBA also abolishes existing federal tax credits for new and previously owned electric vehicles (EVs). These credits, which previously offered up to $7,500 for new EVs and $4,000 for used EVs, terminated September 30, 2025. This accelerated phase-out, much earlier than initially planned, could have a considerable impact on the affordability and market appeal of electric vehicles. Without these federal incentives, the net cost of purchasing an EV has increased for consumers, potentially slowing the transition to electric mobility. Dealerships and buyers interested in EVs are now operating under a compressed timeline to take advantage of the remaining credits.
Exclusions and Considerations
It’s important for consumers to understand what doesn’t qualify under the new OBBBA provisions. The car loan interest deduction is strictly for new vehicle purchases; used cars, even if “new” to the buyer, are explicitly excluded. Similarly, vehicles acquired through lease financing do not qualify for the interest deduction. This distinction emphasizes the act’s focus on incentivizing new car sales and direct ownership. While the OBBBA aims to provide tax relief for many car buyers, understanding these specific qualifications and limitations is crucial for consumers making informed purchasing decisions in the evolving automotive market.
This legislation represents a strategic move to stimulate specific segments of the automotive market, particularly favoring new, U.S.-assembled internal combustion engine (ICE) vehicles through tax incentives. Simultaneously, the removal of EV tax credits signals a reevaluation of federal support for electric mobility. Dealership customers should carefully consider these tax implications when planning their next vehicle purchase between 2025 and 2028.
Disclaimer: This article provides general information and should not be considered professional financial or tax advice. Please consult with a qualified CPA or financial advisor for guidance specific to your individual business needs.
Dealership Experts
Kristin Krabacher is a financial strategist with Brady Ware Dealership Advisors, specializing in auto dealer profitability and tax optimization. With over 8 years of experience guiding dealership owners, Kristin excels at translating complex tax laws into clear, actionable insight. She’s helped countless clients enhance gross profit, improve compliance, and make smarter financial decisions through tailored benchmarking and audit-ready processes.