Car Loan Interest Tax Deduction 2026: How the OBBBA's $10,000 "No Tax on Car Loan Interest" Break Works (IRC §163(h)(4), Schedule 1-A, and the US Final-Assembly Rule)

June 2026 Snapshot: A Brand-New $10,000 Deduction for Car Loan Interest — What Buyers Need to Know Now

On July 4, 2025, the One Big Beautiful Bill Act (Public Law 119-21) was signed into law. Among its marquee "working family" tax breaks sits a provision Washington nicknamed "No Tax on Car Loan Interest." The statute adds a new Internal Revenue Code §163(h)(4) that lets eligible taxpayers deduct up to $10,000 per year of interest paid on a qualifying new-vehicle loan, for tax years 2025 through 2028. As the IRS's OBBBA provisions hub confirms, the deduction is already in force for the entire 2025 tax year — meaning it appeared, for the first time, on returns filed in early 2026.[3, 1, 8]

Two cautions frame everything that follows. First, this is not a tax credit and not a forgiveness of interest — it is a deduction that reduces the income you are taxed on, so its real value is the interest amount multiplied by your marginal tax rate. Second, the rules are unusually specific: the car must have undergone final assembly in the United States, the loan must be secured by a first lien and incurred after December 31, 2024, and the write-off phases out at higher incomes. The IRS laid out the framework in its car loan interest guidance, and Treasury fleshed out the mechanics in proposed regulations REG-113515-25, published in the Federal Register on January 2, 2026.[6, 5]

This guide is written for the June 2026 reader who is shopping for a car or finishing a 2025 return. It walks through the exact statutory text of §163(h)(4), the definition of a qualifying vehicle and loan, the income phaseout math, how much money the deduction actually saves at today's roughly 7.5% new-car loan rates, the new Form 1098-VLI reporting regime, how to claim the write-off on the new Schedule 1-A, and the planning traps to avoid before the deduction sunsets at the end of 2028. Before diving in, it helps to see how the interest cost and total ownership cost of a specific car actually pencil out.[20]

What §163(h)(4) Actually Says: A Carve-Out From "Personal Interest," Not an Above-the-Line Deduction

To understand this deduction you have to understand a quirk of US tax law. Since 1986, personal interest — interest on credit cards, personal loans, and car loans — has been nondeductible under IRC §163(h). OBBBA did not create a shiny new deduction in a vacuum; instead it carved a hole in the personal-interest ban. New §163(h)(4) declares that, "in the case of taxable years beginning after December 31, 2024, and before January 1, 2029," the term personal interest "shall not include qualified passenger vehicle loan interest" (QPVLI). In plain English: Congress took car loan interest out of the penalty box for four years.[1]

This structural choice produces a subtlety that trips up even experienced filers, so it is worth stating bluntly: the car loan interest deduction is NOT an "above-the-line" deduction. Above-the-line deductions (like the new tip and overtime deductions, or student-loan interest) are listed in IRC §62 and reduce your Adjusted Gross Income (AGI). The QPVLI deduction is not in the §62 list. Instead, OBBBA made it available to both itemizers and standard-deduction filers through a separate mechanism, so it reduces your taxable income without reducing your AGI. As the IRS confirms, the deduction "is available for both itemizing and non-itemizing taxpayers." That distinction matters for any other tax feature keyed to AGI or MAGI — the car loan deduction will not pull you below those other cliffs.[1, 7]

Alongside the deduction, OBBBA enacted a companion reporting statute, IRC §6050AA, which obligates lenders who receive $600 or more of qualifying interest from an individual to file an information return and furnish the borrower a year-end statement. The deduction (§163(h)(4)) and the reporting hook (§6050AA) were written to work together: the IRS designed the new Form 1098-VLI so that the figure your lender reports is the figure you deduct. The full text of both sections appears in the bill as enacted; the canonical citation is H.R. 1, 119th Congress, signed as Public Law 119-21.[2, 4]

Which Cars Qualify: New, Personal-Use, Under 14,000 lbs — and Final Assembly in the United States

The IRS defines a qualifying "applicable passenger vehicle" narrowly. Per the IRS guidance, it must be "a car, minivan, van, SUV, pick-up truck or motorcycle, with a gross vehicle weight rating of less than 14,000 pounds, and that has undergone final assembly in the United States." It must be new (original use begins with the taxpayer — used vehicles are excluded) and acquired for personal use. The proposed regulations summarized by the Journal of Accountancy (AICPA) clarify that the vehicle must be used more than 50% for personal purposes at the time the loan is issued; a vehicle bought primarily for business does not qualify (though business-use interest may be deductible under separate ordinary-and-necessary rules).[6, 21]

The final-assembly requirement is the rule most likely to surprise shoppers, because it has nothing to do with the brand on the badge. A vehicle from a "foreign" marque can qualify if its final assembly plant is in the US, while an "American" brand can fail if that model is assembled in Mexico or Canada. The IRS says taxpayers can confirm final assembly two ways: from the vehicle information label affixed to the car (the Monroney sticker), or from the plant of manufacture encoded in the Vehicle Identification Number (VIN). The free NHTSA VIN Decoder (vPIC) returns the "Plant Information" — build plant and country — for any VIN, which is the cleanest way to verify eligibility before you sign.[6, 19]

Which Loans Qualify: Incurred After 2024, First-Lien, Purchase-Money — and Why Leases and Cash-Out Refis Are Out

The statutory definition of qualified passenger vehicle loan interest in §163(h)(4)(B)(i) sets three loan conditions, all of which must be met. The indebtedness must be (1) incurred after December 31, 2024 — interest on a loan you took out in 2023 or 2024 does not qualify, even if you are still paying it; (2) used for the purchase of the vehicle (purchase-money debt, not a general personal loan you happened to spend on a car); and (3) secured by a first lien on that vehicle. A loan secured by your home (a HELOC used to buy a car) or an unsecured personal loan fails the first-lien test, even though the money bought a car.[1]

Two structures sit at the boundary and deserve attention. Leases are out. Because a lease is not debt secured by a first lien that you incur to purchase the vehicle, lease payments — and the rent-charge component baked into them — do not generate QPVLI. Refinancing is more nuanced: the proposed regulations summarized by Thomson Reuters generally allow a refinanced loan to keep eligibility, but only up to the outstanding balance of the original qualifying loan; a "cash-out" refinance that pulls equity above that balance does not turn the extra borrowing into deductible car interest. Loans from a related person (for example, a family member) are also outside the definition. Because these mechanics were still in proposed form as of mid-2026, confirm the final treatment with a tax professional before relying on a refinance.[23, 21]

The Income Phaseout: $200 Lost per $1,000 Over $100K (Single) / $200K (Joint), Gone Entirely at $150K / $250K

The $10,000 ceiling is not available to everyone. §163(h)(4) reduces the maximum deduction by $200 for each $1,000 (or fraction of $1,000) by which your modified adjusted gross income (MAGI) exceeds $100,000 (single filers) or $200,000 (married filing jointly). Because $10,000 ÷ $200 = 50 increments of $1,000, the deduction is fully eliminated once MAGI reaches $150,000 (single) or $250,000 (joint). For this provision, MAGI means your AGI increased by any amounts excluded under IRC §§911, 931, or 933 (foreign-earned-income and US-possession exclusions) — for the vast majority of domestic taxpayers, MAGI simply equals AGI.[1]

A worked example makes the math concrete. A married couple filing jointly with MAGI of $205,000 is $5,000 over the $200,000 threshold; $5,000 ÷ $1,000 = 5 increments × $200 = a $1,000 reduction, so their maximum deduction falls from $10,000 to $9,000 — a figure the Thomson Reuters analysis uses as its illustration. A single filer with MAGI of $130,000 is $30,000 over the $100,000 line; 30 × $200 = a $6,000 reduction, capping the deduction at $4,000. Note the phaseout is applied to the $10,000 ceiling, not to your actual interest — so if you only paid $2,800 in interest, the phaseout reduces the ceiling but you still deduct your full $2,800 unless the reduced ceiling drops below it.[23, 1]

How Much Does It Actually Save You? Deduction vs. Credit Math at Today's ~7.5% New-Car Rates

Because this is a deduction, the cash you save equals your deductible interest multiplied by your marginal federal tax rate — not the interest itself. Consider a buyer who finances a $40,000 US-assembled SUV over 60 months. At the Federal Reserve's most recent G.19 Consumer Credit figure for new-car loans — roughly 7.5% APR — first-year interest runs near $2,800. If that buyer is in the 22% bracket, the deduction is worth about $616 in year one (0.22 × $2,800). Over the full 60-month loan the buyer pays roughly $8,000 of total interest; spread across the 2025-2028 window, most of it is deductible, but at 22% the lifetime tax benefit is on the order of $1,700 — meaningful, but far smaller than the headline $10,000 cap suggests.[20]

The arithmetic carries three practical lessons. First, most ordinary buyers will never hit the $10,000 cap — you would need well over $130,000 of auto debt at current rates to generate that much annual interest, so the ceiling mainly bites for luxury vehicles or multiple financed cars. Second, the benefit is front-loaded: amortizing loans charge the most interest in the early years, so the deduction is largest right after purchase and shrinks each year. Third, a lower-rate loan means less interest and therefore a smaller deduction — the tax break never makes overpaying for financing worthwhile. To see exactly how much interest your specific loan amount, rate, and term will generate each year, model it before you buy.[20]

The Reporting Regime: Form 1098-VLI, the $600 Threshold, and 2025 Transition Relief Under Notice 2025-57

Under §6050AA, a lender that receives $600 or more of qualifying interest from an individual during the year must file an information return with the IRS and furnish a statement to the borrower by January 31 of the following year. The IRS built a dedicated form for this — Form 1098-VLI, "Vehicle Loan Interest Statement" — that reports the interest received plus the loan origination date and the vehicle's year, make, model, and VIN. As of mid-2026 the form and its draft instructions remain in draft status (the posted December 2026 revision is marked for development), because the underlying regulations are not yet final.[2, 13, 14]

Because lenders needed time to build these systems, the IRS granted transition relief for 2025 in Notice 2025-57 (published in Internal Revenue Bulletin 2025-45). For interest received in 2025, a lender is deemed to satisfy §6050AA if it simply makes available to the borrower a statement showing the total interest received that year — through an online portal, a regular monthly statement, an annual statement, or similar — without issuing a formal Form 1098-VLI, and the IRS will not impose penalties for compliant lenders. As the AICPA's The Tax Adviser explained when the relief was announced on October 21, 2025, this one-year grace period was designed precisely so 2025 buyers would not lose the deduction merely because the paperwork machinery was not ready.[11, 12, 22]

How to Claim It: Schedule 1-A Part IV, the VIN Requirement, and Form 1040 Line 13b

For 2025 and later, the IRS created an entirely new form to collect the OBBBA "working family" deductions: Schedule 1-A (Form 1040), "Additional Deductions." Per the IRS fact sheet on the new form (FS-2026-04), the car loan interest deduction is claimed in Part IV, which "should only be completed if the taxpayer or their spouse … paid or accrued qualified passenger vehicle loan interest." Critically, "the vehicle identification number of the purchased vehicle must be reported on Schedule 1-A." The combined additional deductions then flow to Form 1040, line 13b. The IRS's companion announcement that it "published the schedule" for tips, overtime, car loans, and seniors confirms this single form carries all four new deductions.[9, 10]

Two housekeeping points round out the mechanics. Keep your documentation: the lender's year-end interest statement (or Form 1098-VLI once it is finalized), the purchase contract, and the VIN/final-assembly confirmation. And consider adjusting your withholding mid-year so you are not over-withholding against a deduction you already know you will claim. The IRS Tax Withholding Estimator lets you fold the expected deduction into a revised Form W-4, and Publication 505 (Tax Withholding and Estimated Tax) explains the pay-as-you-go rules for both wage earners and the self-employed who pay estimated tax.[16, 15]

How It Compares: Mortgage Interest, Business-Use Vehicles, and Why "Doesn't Lower AGI" Matters

It is worth contrasting the car loan deduction with its older cousin, the home mortgage interest deduction, also found in §163(h). Mortgage interest is an itemized deduction — you only benefit if your total itemized deductions exceed the standard deduction. The car loan interest deduction is fundamentally different: it is available on top of the standard deduction, so a taxpayer who takes the standard deduction (the large majority) still gets the full car-interest write-off. That makes the new deduction far more broadly usable than mortgage interest, which after the 2017 standard-deduction increase benefits only a minority of homeowners.[1]

But there is a flip side that matters for higher earners and anyone navigating other income-based thresholds. Because the deduction reduces taxable income but not AGI, it does not help you slip below AGI- or MAGI-based cliffs elsewhere in the code — Medicare IRMAA surcharges, the Net Investment Income Tax threshold, education-credit phaseouts, and even this deduction's own MAGI phaseout are all measured before the car-interest write-off. Contrast that with the new tip and overtime deductions described in the same IRS fact sheet, which are above-the-line and do reduce AGI. Finally, if you use the vehicle partly for business, you cannot double-dip: interest allocable to business use follows the ordinary trade-or-business rules and is excluded from QPVLI, while only the personal-use portion (for a vehicle that is more than 50% personal) feeds the §163(h)(4) deduction.[7, 21]

Strategy and Pitfalls Through the 2028 Sunset: Verify Assembly First, Mind Your MAGI, Watch the Proposed-Rule Risk

The single most actionable step is to verify final assembly before you sign. Decode the VIN through the NHTSA vPIC tool or read the Monroney label's assembly point; do not assume from the brand. The CFPB's auto-loans hub and its downloadable Auto Loan Shopping Sheet are useful for comparing offers, and the CFPB stresses that the interest rate and term — which together determine your deductible interest — are negotiable. If two comparable vehicles differ only in assembly location, the US-assembled one now carries a modest tax edge for buyers under the income limits.[19, 17]

Two further cautions. First, this is a four-year window: §163(h)(4) sunsets for tax years beginning after December 31, 2028 unless Congress extends it, so the deduction is best viewed as a temporary feature of any purchase made through 2028 — not a permanent reason to finance rather than pay cash. Second, remember the regulatory status. As of June 2026 the operative guidance is proposed regulation REG-113515-25; the comment period closed February 2, 2026, but Treasury had not yet issued final regulations, and the Journal of Accountancy notes the rules could change at finalization. The statutory deduction itself is firmly in effect for 2025-2028, but for edge cases — refinances, mixed-use vehicles, related-party loans — confirm the current treatment with a CPA or enrolled agent before filing. The information here is educational, not individualized tax advice.[5, 21]

Frequently Asked Questions About the Car Loan Interest Deduction

The questions below address the most common points of confusion — used cars, leases, the standard-deduction interaction, the assembly rule, refinancing, the 2025 paperwork gap, and what happens above the income limits.

The Bottom Line: A Real but Modest Break — Verify Assembly, Track the Interest, Claim It on Schedule 1-A

The OBBBA car loan interest deduction is a genuine, if modest, benefit for the 2025-2028 window: up to $10,000 of interest a year on a new, US-assembled, personal-use vehicle bought with a first-lien loan incurred after December 31, 2024, available whether you itemize or take the standard deduction, phasing out between $100,000 and $150,000 of MAGI (single) or $200,000 and $250,000 (joint). The practical checklist is short: (1) before buying, decode the VIN to confirm US final assembly; (2) make sure the loan is purchase-money and first-lien; (3) keep your lender's year-end interest statement; (4) claim it on Schedule 1-A, Part IV with the VIN; and (5) remember it reduces taxable income, not AGI, and a 22% bracket turns ~$2,800 of interest into ~$616 of real savings.[1, 9]

Whether the deduction tips your decision toward a particular vehicle or simply sweetens a purchase you were going to make anyway, the smartest move is to run the actual numbers — loan amount, rate, term, first-year interest, and the resulting tax savings — against the full cost of owning the car. Plug your scenario into the calculators below before you sign.