The business vehicle deduction lets self-employed people and business owners write off the cost of driving for work, either by claiming a flat 72.5 cents for every business mile in 2026 or by adding up actual operating costs and deducting the business-use share. Which method saves you more depends on what you drive, how much it costs to run, and how many business miles you log. Commuting from home to a regular workplace never counts, no matter which method you pick.
Who Qualifies
Sole proprietors, independent contractors, single-member LLC owners, and partners in a partnership can all deduct the business portion of their vehicle costs. For a sole proprietor the deduction flows through Schedule C and reduces both income tax and self-employment tax.1Internal Revenue Service. Schedule C (Form 1040) – Profit or Loss From Business
W-2 employees generally cannot claim this deduction. The Tax Cuts and Jobs Act suspended the write-off for unreimbursed employee business expenses starting in 2018, and the One Big Beautiful Bill Act made that elimination permanent. If your employer does not reimburse your mileage, there is no federal tax break to fall back on. Narrow exceptions still exist for Armed Forces reservists, qualified performing artists, and fee-basis state or local government officials.
What Driving Counts
Federal law allows a deduction for travel expenses that are ordinary and necessary in carrying on a trade or business.2Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses That covers driving between job sites, going to see clients or customers, picking up supplies, and similar trips with a clear business purpose. Personal errands do not count, even if you run them during the workday.
Commuting between your home and your regular place of work is always a personal expense. Distance does not change that, and neither does taking business calls on the drive.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
Two exceptions matter. If you have a qualifying home office that serves as your principal place of business, travel from home to any other work location in the same trade or business is deductible.4Internal Revenue Service. Publication 587, Business Use of Your Home And travel to a temporary work location, one where your assignment is realistically expected to last a year or less, is deductible even if you also have a regular office elsewhere.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses Once the assignment is expected to run past a year, the location stops being temporary and the deduction stops with it.
When a vehicle serves both business and personal purposes, only the business share is deductible. Divide your business miles by your total miles for the year to get the percentage. Drive 18,000 miles total with 12,000 for business and your business-use percentage is 66.7%.
Standard Mileage Rate vs. Actual Expenses
You have two ways to calculate what you can deduct. The right choice depends on your vehicle, your operating costs, and how much recordkeeping you are willing to do.
The Standard Mileage Rate
For 2026, the rate is 72.5 cents per business mile.5Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents Multiply that by your business miles, add parking fees and tolls paid on business trips, and that is your deduction. Depreciation, lease payments, fuel, and other operating costs are baked into the rate and cannot be claimed separately.
One timing rule catches people off guard. If you own the vehicle, you must use the standard mileage rate in the first year it is available for business use. After that first year you can switch between methods year to year. But if you claim Section 179 expensing, bonus depreciation, or MACRS depreciation in year one, the standard mileage rate is off the table for that vehicle permanently.6Internal Revenue Service. Rev. Proc. 2019-46
Leased vehicles follow a stricter rule. If you start a lease on the mileage rate, you must stay on it for the entire lease, including any renewals.6Internal Revenue Service. Rev. Proc. 2019-46
Actual Expenses
The actual expense method requires you to track every dollar you spend on the vehicle: fuel, oil changes, repairs, tires, insurance, registration, parking, tolls, lease payments, and depreciation. You multiply the total by your business-use percentage to get the deduction.7Internal Revenue Service. Topic No. 510, Business Use of Car
Actual expenses tend to produce a bigger deduction for newer, pricier vehicles with high operating costs. The mileage rate often wins for older, cheaper cars driven a lot of business miles. Run the numbers both ways in year one before you lock yourself in.
If you operate five or more vehicles at once, you cannot use the standard mileage rate at all. Fleets must use actual expenses.8Internal Revenue Service. Instructions for Schedule C (Form 1040)
Lease Inclusion Amounts
Lessees who use the actual expense method on a passenger automobile face one extra step. To keep leasing from becoming a workaround for the depreciation caps that apply to vehicle owners, the IRS makes you add a small amount to your gross income each year of the lease. The figure comes from tables that depend on the vehicle’s fair market value and the lease year. For leases beginning in 2026, the amounts are in Table 3 of Rev. Proc. 2026-15.9Internal Revenue Service. Rev. Proc. 2026-15 The inclusion is modest for most vehicles and grows for high-value cars.
How Vehicle Weight Changes the Deduction
The tax code splits vehicles at 6,000 pounds gross vehicle weight rating (GVWR), and the split matters a lot at tax time. A “passenger automobile” is any four-wheeled vehicle built primarily for public roads with a GVWR of 6,000 pounds or less.10Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles GVWR is the manufacturer’s rated maximum, printed on the label inside the driver’s-side door jamb, not the actual weight of the vehicle.
Passenger Automobiles: Annual Caps
If your vehicle falls under the 6,000-pound line, annual depreciation caps limit how much you can write off no matter what the car cost. For vehicles placed in service in 2026 where bonus depreciation applies, the year-one cap is $20,300. Without bonus depreciation, whether because you elected out, your business use was 50% or less, or the vehicle was acquired before September 28, 2017, the year-one cap drops to $12,300. The caps continue in later years on a set schedule.9Internal Revenue Service. Rev. Proc. 2026-15
In practice, these caps mean a $55,000 sedan used entirely for business takes roughly four years to fully depreciate, even though the recovery period for vehicles is five.
Heavy Vehicles: Section 179 and Bonus Depreciation
Vehicles with a GVWR above 6,000 pounds sit outside the passenger automobile caps, which is why heavy SUVs and trucks draw so much tax planning attention.
Section 179 lets you deduct the cost of qualifying business equipment in the year you place it in service instead of depreciating it over time. The overall Section 179 limit for 2026 is $2,560,000, but heavy SUVs rated between 6,001 and 14,000 pounds GVWR face a sub-limit of $32,000. Trucks and vans that are not classified as SUVs, such as a full-size pickup with a cargo bed at least six feet long or a box truck, can use the full Section 179 limit without the SUV sub-cap.
Bonus depreciation, restored to a permanent 100% rate by the One Big Beautiful Bill Act for property acquired after January 19, 2025, then lets you deduct the entire remaining cost of a heavy vehicle in year one after Section 179 is applied.11Internal Revenue Service. Notice 2026-10 – 2026 Standard Mileage Rates Together, the two provisions can let an owner who buys a $78,000 heavy-duty pickup and uses it 100% for business write off the full price in year one. Lower business use reduces the deduction proportionally.
The 50% Business-Use Test
A vehicle must be used more than 50% for business to qualify for Section 179, bonus depreciation, or accelerated depreciation at all. Section 280F is strict about this. Drop below 50% in any year after you place the vehicle in service and two things happen: you switch to slower straight-line depreciation going forward, and you must report as income the difference between the accelerated depreciation already claimed and what straight-line would have allowed.10Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles
That recapture can produce a surprising tax bill in a year when nothing went wrong beyond a shift in how you used the vehicle. If your business-use percentage hovers near the line, weigh the risk of recapture against the front-loaded deduction before you claim it.
Recordkeeping That Holds Up
The IRS will disallow the deduction outright if you cannot substantiate it, and a rough guess in April is not substantiation. You need a contemporaneous mileage log, kept close to real time.
Each entry should show four things: date, destination, business purpose, and miles driven.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses A smartphone app that logs GPS data and lets you tag trips as business or personal makes this simple and produces a timestamped record that stands up if your return is questioned.
Using actual expenses means also keeping receipts or records for every cost you claim: fuel, maintenance, insurance, registration, and lease payments.3Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses Digital copies work as long as they are legible and organized.
Hold on to all vehicle records for at least three years after you file the return that used them.12Internal Revenue Service. Topic No. 305, Recordkeeping If you claimed depreciation, keep them longer. You will need the numbers to calculate gain and recapture when you sell.
How to Report It
Sole proprietors report vehicle expenses on Line 9 of Schedule C. On the mileage method, multiply business miles by 0.725, add parking and tolls, and enter the result. Using actual expenses, put the business share of operating costs on Line 9 and report depreciation separately on Line 13.8Internal Revenue Service. Instructions for Schedule C (Form 1040)
You also have to answer questions about how you use the vehicle. If you claim the standard mileage rate and are not otherwise required to file Form 4562, complete Part IV of Schedule C. If you claim depreciation on the vehicle, or file Form 4562 for any other reason, complete Part V of Form 4562 instead. It asks for total miles, business miles, commuting miles, and whether you have written evidence to back up your claim.13Internal Revenue Service. Instructions for Form 4562
The vehicle section is a known audit trigger. The accuracy-related penalty for a substantial understatement is 20% of the underpayment, plus interest that runs until you pay.14Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments Checking your business-use percentage against your log before you file is the easiest way to avoid the problem.
When You Sell the Vehicle
Selling a vehicle you have depreciated triggers recapture. The gain, meaning the difference between what you receive and the vehicle’s adjusted basis, is treated as ordinary income up to the total depreciation you claimed. Any gain above that amount is a Section 1231 gain, which may qualify for lower capital gains rates.15Internal Revenue Service. Publication 544, Sales and Other Dispositions of Assets
Recapture applies even if you used the standard mileage rate. The IRS treats a portion of that rate as depreciation each year, and the accumulated deemed depreciation feeds into the gain calculation at sale. Report the sale on Form 4797. If you took large first-year deductions through Section 179 or bonus depreciation on a heavy vehicle, the recapture can be substantial, so plan for the tax before you list the vehicle.