The New Car Loan Interest Deduction and a Business Vehicle: What Freelancers Need to Know

Published: August 31, 2026 · Reading time: 10 min

TL;DR: OBBBA's new car loan interest deduction (QPVLI, IRC §163(h)(4)) sounds like a win for anyone financing a vehicle — but it only applies if you expect the vehicle to be used more than 50% of the time for personal driving, tested once at loan origination. A freelancer whose vehicle is primarily for the business — rideshare, delivery, trades — is excluded from it entirely and stays on the pre-existing Schedule C business-use-percentage interest deduction. For a genuinely mixed-use vehicle that does qualify, you get a choice between claiming it all as QPVLI or splitting part of it as a Schedule C business expense — and splitting usually wins, because the business-use portion also cuts self-employment tax, which QPVLI never touches.

Every "new $10,000 car deduction" headline this year skipped the one qualifying test that decides whether a freelancer can use it at all: how the vehicle is actually used, not just how it's financed.

The Personal-Use Test, From the Statute

IRC §163(h)(4)(A), added by OBBBA for tax years 2025–2028, excludes "qualified passenger vehicle loan interest" (QPVLI) from the general disallowance of personal interest — in plain terms, it makes an exception that lets certain vehicle-loan interest be deducted even though it's otherwise personal, non-deductible interest. §163(h)(4)(B) defines QPVLI as interest on a loan for an "applicable passenger vehicle for personal use." A loan for a vehicle that is not used for personal purposes — a genuinely commercial or fleet vehicle — falls outside the definition entirely.

The proposed regulations implementing the statute translate "for personal use" into a specific test: you qualify if you expect, at the time the loan is taken out, that the vehicle will be used for personal purposes more than 50% of the time. Two things about this test matter more than the headline 50% number:

1. It's forward-looking and one-time. You test your expected use when you take out the loan, not your actual use each year. If your business grows and business-use rises well past 50% two years later, the proposed regulations don't require you to re-test or lose the deduction — but by the same logic, expecting more-than-50% business use at the start disqualifies the loan from the start, even if you end up driving it less for work than planned.
2. There's no proportional version for a disqualified vehicle. If you expect business use over 50%, none of the interest qualifies as QPVLI — not a reduced amount, none. You're limited to whatever the pre-existing Schedule C rule already allowed: the business-use percentage of interest as an ordinary business expense.

Who This Actually Excludes

For a large share of CentSense's audience, this test is disqualifying, not merely a hurdle:

• Rideshare and delivery drivers whose vehicle logs the bulk of its miles for the platform
• Contractors and trade workers — electricians, plumbers, HVAC techs, landscapers — who use a truck or van primarily for job sites and supply runs
• Mobile-service businesses (mobile detailing, mobile grooming, food trucks) built around a vehicle that is the business

None of these generate QPVLI on the vehicle loan, no matter how new the vehicle or how much interest is paid. They're not worse off than before OBBBA — they simply continue using the deduction that already existed: the business-use percentage of loan interest on Schedule C Line 16b, covered in full in our Schedule C Line 16 guide.

The deduction is genuinely useful for the freelancer at the other end of the spectrum: someone whose personal vehicle is mostly for personal life, with occasional business use — client meetings, supply runs, or the odd delivery — well under 50%.

For a Qualifying Vehicle: QPVLI, Split, or Both?

If your expected use clears the more-than-50%-personal bar, the proposed regulations don't force you to allocate anything — you can report 100% of the year's interest as QPVLI, up to the $10,000 cap, and skip the business-use tracking entirely for interest purposes. But you're also allowed to claim part of the interest as ordinary Schedule C business interest instead, as long as you reduce your QPVLI claim by the same amount so the same dollar of interest is never deducted twice.

Worked Example: 20% Business Use, Two Ways to Report the Same $4,200

Sarah is a freelance graphic designer. She finances a new, US-assembled SUV in 2026 that she expects to use, and does use, about 20% for business (client deliveries, supply runs) and 80% for personal driving — clearing the more-than-50%-personal threshold comfortably. She pays $4,200 in loan interest for the year, is single, and her MAGI is well under the $100,000 QPVLI phase-out threshold. Her marginal tax rate is 22%.

Option A — claim it all as QPVLI:

• Full $4,200 deducted as QPVLI on Schedule 1-A (under the $10,000 cap)
• Income tax saved: $4,200 × 22% = $924.00
• Self-employment tax saved: $0 — QPVLI is a below-the-line deduction like every other Schedule 1-A item and never touches Schedule SE

Option B — split by business-use percentage:

Sarah's graphic-design business isn't an SSTB and her income is well under the QBI phase-in range, so she gets the full 20% QBI deduction on her business income — which means a second-order effect on top of the SE-tax one: reducing her net profit reduces her QBI deduction too.

• Business-use portion: $4,200 × 20% = $840.00, claimed as ordinary interest on Schedule C Line 16b
• Personal-use portion: $4,200 × 80% = $3,360.00, claimed as QPVLI
• Self-employment tax saved on the $840 business portion (it reduces Schedule C net profit): $840 × 92.35% × 15.3% = $118.69
• That lower SE tax also shrinks Sarah's above-the-line half-SE-tax deduction by half of $118.69 = $59.34, partially offsetting the $840 reduction to her taxable income: net reduction from the business portion = $840 − $59.34 = $780.66
• That same $780.66 also reduces her QBI (qualified business income), cutting her 20% QBI deduction by $780.66 × 20% = $156.13 — which costs her $156.13 × 22% = $34.35 in income tax she'd otherwise have saved
• Net income tax saved on the business portion: $780.66 × 22% − $34.35 = $171.74 − $34.35 = $137.40
• Income tax saved on the $3,360 QPVLI portion (no SE tax or QBI effect — QPVLI never touches Schedule C): $3,360 × 22% = $739.20
• Total saved: $118.69 (SE tax) + $137.40 (income tax, net of the QBI offset) + $739.20 (income tax) = $995.28

Splitting still wins, but by $71.28 rather than the larger margin a simpler comparison would suggest — and the gap narrows further for anyone whose QBI deduction is already phased down by SSTB status or high income. The reason splitting wins at all is structural: the Schedule C business-interest deduction reduces net self-employment earnings, which lowers income tax and self-employment tax, while QPVLI — like the tips, overtime, and senior deductions on the same Schedule 1-A — only ever reduces taxable income. But every dollar moved off Schedule C also gives up a slice of QBI deduction and half-SE-tax deduction, so the true advantage is meaningfully smaller than a naive "SE tax is free money" comparison implies. Someone without a QBI deduction to lose (an SSTB above the phase-in range, or a non-SSTB business already using the loss elsewhere) would see the larger $105.63 advantage from the SE-tax effect alone.

The Documentation This Requires

Because the QPVLI eligibility test turns on expected use at loan origination, and the split option turns on your actual business-use percentage, keep both trails:

1. At purchase: a note of your expected personal-vs-business use, consistent with how you actually use the vehicle in the following months — a wildly inconsistent later mileage log undermines the original expectation if it's ever questioned.
2. All year: a contemporaneous mileage log establishing the actual business-use percentage, the same record you'd need for the Schedule C deduction regardless of QPVLI.
3. From the lender: the annual interest statement (Form 1098-VLI, new for vehicle loans) and the vehicle's VIN, which must be reported on Schedule 1-A each year the deduction is claimed.

Frequently Asked Questions

Can I claim the new car loan interest deduction on a vehicle I use for my freelance business?

Only if you expect, at loan origination, that the vehicle will be used for personal purposes more than 50% of the time. A vehicle you expect to use primarily for rideshare, delivery, or trade work — anything over 50% business use — doesn't generate QPVLI at all, no matter how the miles actually break down later.

What if my vehicle is used for both business and personal driving?

The 50% test is evaluated once, at loan origination, based on expected use — it isn't reassessed annually. If you qualify, you can claim all interest as QPVLI (up to $10,000) or allocate a portion as Schedule C business interest instead, but not both on the same dollars.

Should I claim it all as QPVLI or split it with a Schedule C business deduction?

If you have any genuine business-use percentage, splitting usually wins, because the business-use portion reduces both income tax and self-employment tax, while QPVLI only reduces taxable income. The worked example above shows about a $71 advantage to splitting at 20% business use, after also accounting for the QBI deduction the business-use portion gives up.

Does the standard mileage rate include vehicle loan interest?

No. The standard mileage rate covers gas, maintenance, depreciation, insurance, registration, and tires — not loan interest. The business-use percentage of loan interest is separately deductible regardless of which vehicle-expense method you use.

What are the vehicle and income requirements for the car loan interest deduction?

The vehicle must be new, have final assembly in the United States, and be financed by a first-lien loan originated after December 31, 2024 that isn't a refinance. The deduction caps at $10,000 per return and phases out starting at $100,000 MAGI single / $200,000 MFJ — Schedule 1-A rounds the excess MAGI up to the next $1,000 before applying a $200-per-$1,000 reduction, so it's effectively gone once MAGI passes roughly $149,000 single / $249,000 MFJ. The VIN must be reported each year claimed.

Authoritative References

• 26 U.S.C. §163(h)(4) — Qualified passenger vehicle loan interest
• IRS — Schedule 1-A, Additional Deductions: what to know about the new form
• IRS — Publication 463: Travel, Gift, and Car Expenses

Related reading: Schedule C Line 16: interest deduction · Schedule C Line 9: car and truck expenses · Standard mileage vs. actual expense method · IRS Schedule 1-A for freelancers · Lease vs. buy a vehicle for freelancers

Know Your Real Business-Use Percentage, Automatically

Whether you're deciding if a vehicle clears the 50% personal-use line or splitting loan interest by business-use percentage, the number that decides everything is your actual mileage split — not a guess made in April. CentSense logs every mile automatically as you drive, so your business-use percentage is always accurate and ready when you need it. Free tier includes 10 AI scans per month; Solo is $5/month for unlimited scanning and automatic mileage logging.

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This guide is general education for U.S. freelancers and independent contractors filing for the 2026 tax year. It is not personalized tax advice. Whether your vehicle qualifies for QPVLI, and how to best allocate loan interest, depends on facts a CPA or EA should review before you file.