Are Car Payments Tax Deductible If You’re Self-Employed?

Car payments are not directly tax deductible if you’re self-employed, but the costs behind those payments often are. The IRS treats a monthly payment as two separate things: interest, which is a business expense to the extent you use the vehicle for work, and principal, which reduces your loan balance and is recovered instead through depreciation. You can claim both of those pieces under the actual expense method, or you can skip the whole calculation and take the standard mileage rate—72.5 cents per business mile for 2026—which bundles most vehicle costs into a single figure.¹

Why the Payment Itself Isn’t Deductible

A car payment covers two things: interest charged by the lender and principal that pays down what you borrowed. Federal law allows a deduction for interest tied to a trade or business but disallows deductions for personal interest and for repayments of principal.² Principal isn’t an expense at all in tax terms; it’s the return of borrowed money. The cost of the vehicle you bought with that money is deducted separately through depreciation over the years you own it.

So when someone asks whether a car payment is deductible, the honest answer is that a portion of it is—the interest—and the vehicle purchase behind it is deductible on its own timetable. Whether you actually claim those amounts depends on which method you pick.

The Standard Mileage Rate

The simplest route is to multiply your business miles by the standard rate and stop there. For 2026, that rate is 72.5 cents per mile.¹ The rate is built to cover gas, oil, insurance, repairs, and depreciation in one number, so you don’t separately deduct any of those. You also can’t deduct lease payments or registration fees while using this method.³

Two things sit outside the rate and can still be deducted on top of it. Parking fees and tolls tied to business trips are deductible separately.⁴ So is the business-use portion of the interest on your auto loan—the list of things the mileage rate absorbs doesn’t include loan interest, which means a self-employed taxpayer using the standard rate can still write off the business share of interest paid during the year.³

The Actual Expense Method

Under actual expenses, you add up every cost of running the vehicle for the year: fuel, oil changes, repairs, tires, insurance, registration fees, and license plates. Then you multiply the total by your business use percentage.⁴ That percentage is business miles divided by total miles for the year—drive 20,000 miles total with 12,000 for work, and your business use is 60%.⁵

This is where the car payment splits. The interest portion of each payment is a business expense subject to that same business-use percentage: 60% business use means 60% of the year’s interest is deductible.⁶ The principal portion is not deducted anywhere on your return. The vehicle’s purchase price is instead recovered through depreciation, which is a separate line item and comes with its own rules.⁷

Actual expenses tend to produce a bigger deduction when the vehicle is costly to operate, when you drive relatively few business miles, or when you can claim substantial depreciation in the first year. The mileage rate usually wins for high-mileage drivers in cheaper cars.

Depreciation: How the Vehicle’s Cost Gets Deducted

Depreciation is the mechanism that lets you deduct the purchase price of the vehicle itself. Several rules interact here, and the size of your first-year write-off depends on the vehicle’s weight, its cost, and how much you use it for business.

Section 179

Section 179 lets you deduct the cost of a qualifying business vehicle in the year you place it in service. The overall Section 179 limit for 2026 is $2,560,000, with a phase-out beginning at $4,090,000 of total qualifying property. For most self-employed people, the tighter numbers are the vehicle-specific caps. Heavy SUVs with a gross vehicle weight rating above 6,000 pounds but no more than 14,000 pounds have a separate Section 179 cap of $32,000 for 2026.⁸ Heavy work trucks and vans over 6,000 pounds that aren’t classified as SUVs—including pickups with a bed at least six feet long—can qualify for the full Section 179 amount without the SUV cap.⁹

Bonus Depreciation

Bonus depreciation under Section 168(k) lets you deduct a large share of a vehicle’s cost in the first year on top of any Section 179 amount. The One, Big, Beautiful Bill made 100% bonus depreciation permanent for property acquired after January 19, 2025.¹⁰ For a vehicle acquired and placed in service in 2026, the rate is 100%.

Luxury Auto Limits

Passenger cars—generally vehicles under 6,000 pounds—hit annual depreciation caps under Section 280F no matter what the vehicle actually cost. For passenger automobiles placed in service in 2025, the first-year limit was $20,200 with bonus depreciation and $12,200 without, then $19,600 in year two, $11,800 in year three, and $7,060 for each year after.¹¹ The 2026 figures follow the same structure with inflation adjustments. Heavy vehicles over 6,000 pounds gross vehicle weight aren’t subject to these caps, which is why they can generate much larger first-year deductions.

The 50% Business Use Threshold

To claim Section 179 or bonus depreciation, the vehicle must be used more than 50% for business. If your business use drops to 50% or below during the recovery period, you have to recapture the Section 179 amount previously claimed and report it as income.¹² Vehicles used 50% or less for business are limited to straight-line depreciation.

Leases Work Differently

Leased vehicles aren’t subject to the interest-and-principal split. Under the actual expense method, the business-use portion of the lease payment is directly deductible along with fuel, insurance, and other operating costs.⁴ For higher-value leases, the IRS requires a “lease inclusion amount” that slightly reduces the deduction. The amount is based on the vehicle’s fair market value at the start of the lease and grows over the term; the IRS publishes tables in annual revenue procedures, with the most recent covering leases beginning in 2024 and 2025.¹³ Vehicles below the fair market value threshold (around $62,000 for 2024 leases) aren’t affected.

Locking In a Method

Your first-year choice shapes what you can do later. If you use the standard mileage rate in the vehicle’s first business year, you can switch to actual expenses later, but you have to use straight-line depreciation for the rest of the vehicle’s useful life instead of accelerated methods.⁴ If you start with actual expenses and claim Section 179 or any accelerated depreciation in year one, you’re permanently locked out of the standard mileage rate for that vehicle.³ Starting with the mileage rate preserves the most flexibility.

For a leased vehicle, choosing the standard mileage rate binds you to it for the entire lease, including renewals.⁴

What Actually Counts as Business Driving

Everything above depends on business miles being genuinely business miles. The IRS treats your commute from home to a regular workplace as a personal expense no matter how far it is.¹⁴ Business driving covers trips between worksites, visits to clients or vendors, and travel to temporary work locations away from your tax home.

If you have a home office that qualifies as your principal place of business, trips from that office to client sites count as business miles. But driving from home to a co-working space or a permanent office you rent is still commuting.

The Records You Need

The IRS expects contemporaneous records—logged at or near the time of travel, not reconstructed at year-end. A complete mileage log includes the date, the destination, the business purpose, the miles driven (or start and end odometer readings), and your annual totals for business and total miles.¹⁵

If you use actual expenses, keep receipts for every operating cost: fuel, repairs, insurance, registration, and anything else you plan to deduct. You’ll also need the year-end interest statement from your lender to document the deductible interest portion of your loan payments. GPS-based mileage apps satisfy the contemporaneous requirement as long as they capture date, location, and miles automatically and you fill in the business purpose. Digital records are fine.

Where It Goes on Your Return

Sole proprietors and independent contractors report vehicle expenses on Schedule C (Form 1040). Under the standard mileage rate, you multiply business miles by 72.5 cents and put the result, plus parking and tolls, on Line 9. Under actual expenses, operating costs go on Line 9, depreciation on Line 13, and lease payments on Line 20a.¹⁶ Part IV of Schedule C asks for the date placed in service, total and business miles, and whether you have written evidence. If you’re claiming depreciation—including Section 179 or bonus depreciation—you also file Form 4562.¹⁷ Farmers use Schedule F instead.

Whatever method you use, the deduction reduces your Schedule C net profit, which lowers both your income tax and your self-employment tax, since the Social Security and Medicare portion is calculated off that same net figure.¹⁸

1
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents
2
Office of the Law Revision Counsel. 26 USC 163 – Interest
3
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses – Section: Standard Mileage Rate Not Allowed
4
Internal Revenue Service. Topic No. 510, Business Use of Car
5
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses – Section: Business and Personal Use
6
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses – Section: Actual Car Expenses
7
Internal Revenue Service. 2025 Instructions for Form 2106 Employee Business Expenses
8
Internal Revenue Service. Revenue Procedure 2025-32
9
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
10
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One Big Beautiful Bill
11
Internal Revenue Service. 2025 Instructions for Form 4562
12
Internal Revenue Service. 2025 Instructions for Form 4562 – Section: Part V Listed Property
13
Internal Revenue Service. Revenue Procedure 2024-13
14
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses – Section: Transportation
15
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses – Section: Examples of Records
16
Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025) – Section: Line 9
17
Internal Revenue Service. 2025 Instructions for Form 4562 – Section: Who Must File
18
Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025) – Section: Line 31