The Schedule C mileage deduction lets self-employed people write off the cost of driving for business, either by multiplying business miles by the IRS standard rate (72.5 cents per mile for 2026) or by deducting the business-use share of actual vehicle costs.1Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile Every deductible mile reduces both your income tax and the 15.3% self-employment tax on your net profit, which is why this write-off matters so much to freelancers, gig workers, and sole proprietors.2Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) The method you pick in the first year you use a vehicle for business shapes what you can do in every year after that, so it pays to understand both before you file.
Which Miles Count
The IRS treats commuting and business driving very differently. Driving from home to a regular place of work is commuting, and it is never deductible. Driving between two business locations, from your office to a client, or from a job site to pick up supplies is business mileage.
The home office rule is what makes this deduction big for many self-employed people. If your home office qualifies as your principal place of business, your home becomes a business location, and trips from there to clients or job sites are deductible rather than commuting.3Internal Revenue Service. Publication 587 – Business Use of Your Home To qualify, the space has to be used exclusively and regularly for administrative or management work, and you cannot have another fixed location where you handle those tasks. A plumber who runs scheduling, invoicing, and books from a dedicated home room and does the actual plumbing at customer sites meets the test. A consultant who rents shared office space for the same tasks does not.
Trips that generally qualify include:
- Client and customer visits, including meetings, consultations, and deliveries
- Travel between work locations, such as from one job site to another
- Business errands like runs to the bank, post office, or supply store
- Trips to temporary work sites where you expect to work for less than a year
Personal stops folded into a business trip do not count. If you drive to a client meeting and then swing by the grocery store on the way home, only the miles to and from the client are deductible.
The Standard Mileage Rate
The standard mileage rate is the simpler method. You multiply your business miles by the IRS rate for the year. At the 2026 rate of 72.5 cents per mile, 15,000 business miles produce a $10,875 deduction.1Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile The rate is built to cover gas, maintenance, repairs, insurance, and depreciation together.
Business-related tolls and parking are deductible on top of the rate, not folded into it.4Internal Revenue Service. Topic No. 510 – Business Use of Car
You can use the standard rate if you own or lease the vehicle, have not claimed Section 179 or accelerated depreciation on it, and are not running five or more vehicles at the same time for business.4Internal Revenue Service. Topic No. 510 – Business Use of Car That last condition mostly affects fleet operators.
The Actual Expense Method
Actual expenses take more paperwork but can produce a larger deduction, especially with newer or costlier vehicles. You start by dividing business miles by total miles to get your business-use percentage. If you drove 20,000 miles total and 14,000 were business, that percentage is 70%. You then apply it to the year’s vehicle costs: gas, oil, tires, repairs, insurance, registration, and lease payments.
Depreciation is what usually tips the scale toward actual expenses for people who own newer vehicles. You deduct a share of the purchase price each year, but the IRS caps how much depreciation you can claim on passenger vehicles under 6,000 pounds. For vehicles placed in service in 2026, the year-one cap is $20,300 with bonus depreciation and $12,300 without, with lower limits in later years. To take bonus depreciation, you have to use the vehicle more than 50% for business in the year you place it in service.5Internal Revenue Service. Rev. Proc. 2026-15
Vehicles with a gross vehicle weight rating over 6,000 pounds, which includes many full-size SUVs, pickups, and commercial vans, are not held to those passenger-car caps. They can qualify for a Section 179 deduction that lets you expense a large slice of the purchase price in the first year, subject to an SUV-specific cap of roughly $32,000 for 2026. Vehicles over 14,000 pounds face no SUV cap.
There is a catch built into aggressive first-year depreciation. If you claim bonus or accelerated depreciation and your business use later drops to 50% or below, the IRS recaptures the excess: the difference between what you actually deducted and what you would have claimed using straight-line depreciation is added back to income that year, and future depreciation reverts to the slower method.6Office of the Law Revision Counsel. 26 USC 280F – Limitation on Depreciation for Luxury Automobiles A big first-year write-off commits you to keeping business use above 50% for the vehicle’s depreciable life.
Picking a Method (and Why Year One Matters)
Neither method is universally better. The standard rate tends to win when you drive a lot of business miles in a fuel-efficient or paid-off vehicle. Twenty thousand business miles a year in an older sedan will usually beat actual costs, and you track nothing but mileage. Actual expenses tend to win when the vehicle is new, expensive, or costly to operate, or when you have a big one-time repair. A contractor who buys a $55,000 truck and uses it 80% for business can claim first-year depreciation that dwarfs the standard rate.
The first year you use a vehicle for business locks in some of your future flexibility. Pick the standard rate that year and you can switch to actual expenses later on a vehicle you own. Pick actual expenses first and you are stuck with that method for the life of that vehicle. Leased vehicles are stricter still: choose the standard rate on a lease and you have to keep it for the whole lease, renewals included.7Internal Revenue Service. Income and Expenses 5
A practical approach is to run the numbers both ways for year one. Starting with the standard rate keeps the door open; starting with actual expenses closes it.
Records the IRS Expects
Federal law requires “adequate records” to substantiate any vehicle expense deduction.8Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses In practice that means a mileage log, and, if you use actual expenses, receipts for every cost.
Your log needs four things for every business trip: date, destination, business purpose, and miles driven. You also need odometer readings at the start and end of each tax year. A notebook works, but most people find a mileage app easier to keep up with. Timing matters. The IRS expects entries made at or near the time of the trip, and a weekly log counts as timely. Reconstructing months of driving from memory at tax time does not, and auditors can tell.
Under the actual expense method, keep receipts for gas, oil, repairs, insurance, registration, and any other vehicle cost, along with records of total and business miles. Bank and card statements can fill gaps but should not be your main documentation.
Where It Goes on Schedule C
The deduction itself goes on Line 9, “Car and truck expenses,” in Part II of Schedule C.9Internal Revenue Service. Instructions for Schedule C (Form 1040)10Internal Revenue Service. Schedule C (Form 1040) 2025 – Profit or Loss From Business11Internal Revenue Service. About Form 4562, Depreciation and Amortization
Anyone claiming a vehicle deduction also fills out Part IV of Schedule C, “Information on Your Vehicle,” reporting total miles, commuting miles, business-use percentage, and whether you have written evidence to support the deduction.9Internal Revenue Service. Instructions for Schedule C (Form 1040) Answering “No” to the evidence question does not by itself trigger an audit, but it strips you of the benefit of the doubt if one comes.
Selling the Vehicle Later
When you sell, trade in, or scrap a vehicle you have been depreciating, the tax consequences follow. You report the disposition on Form 4797.12Internal Revenue Service. Instructions for Form 4797, Sales of Business Property Your adjusted basis is the original cost minus the depreciation you claimed or could have claimed. Sell for more than that basis and the gain is taxable, with the portion attributable to depreciation taxed as ordinary income rather than at capital gains rates. Sell for less and the loss may be deductible.
People often miss this after years of claiming the deduction. Even if you always used the standard rate, a depreciation component is baked into the per-mile figure, and the IRS still expects you to reduce your basis to reflect it when you sell.
What Weak Records Cost
The IRS does not just disallow unsupported mileage claims. If a deduction is cut during an audit because you lack adequate records, the resulting underpayment triggers a 20% accuracy-related penalty on top of the tax owed, applied when the IRS finds negligence or disregard of the rules. A separate 20% penalty applies to a “substantial understatement,” meaning the tax you should have paid exceeds what you reported by the greater of 10% or $5,000.13Internal Revenue Service. Accuracy-Related Penalty For a self-employed filer claiming a large deduction without a log, the combination of back taxes, penalties, and interest can easily wipe out the original savings. The deduction is generous, and it expects the documentation to match.