Gas is a deductible travel expense, but only for certain taxpayers and only for certain drives. If you’re self-employed, an independent contractor, a sole proprietor, or a partner in a pass-through entity, the fuel you burn on business trips is deductible either as an actual expense or through the IRS standard mileage rate, which is 72.5 cents per mile for 2026.1Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents If you’re a regular W-2 employee, the answer is almost always no. The Tax Cuts and Jobs Act suspended unreimbursed employee business expense deductions, and 2025 legislation made that suspension permanent by removing the sunset date.2Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions
Who Can Deduct Gas Costs
Self-employed filers claim vehicle expenses on Schedule C under 26 U.S.C. ยง 162 as ordinary and necessary business expenses.3Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Gas and other vehicle costs go on Line 9, whether you’re using actual expenses or the standard mileage calculation.4Internal Revenue Service. Instructions for Schedule C (Form 1040) Partners and LLC members report through the equivalent form for their entity type.
W-2 employees are largely shut out. If your employer doesn’t reimburse the gas you use for work driving, you eat the cost with no tax benefit, regardless of how much you drive. Four narrow groups can still file Form 2106 to deduct vehicle expenses: Armed Forces reservists, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses.5Internal Revenue Service. Instructions for Form 2106 – Employee Business Expenses Everyone else should be looking at whether their employer will reimburse them.
What Counts as Business Driving
The IRS defines deductible travel as the ordinary and necessary costs of traveling away from your tax home for business.6Internal Revenue Service. Topic No. 511, Business Travel Expenses Your tax home is the whole city or general area where your main place of business is located, not your house. A trip qualifies as business travel when it takes you substantially longer than a normal workday and requires sleep or rest before you return.7Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
Commuting Doesn’t Count
The drive between your home and your regular workplace is commuting, which the IRS treats as personal no matter how far it is or what you do during the drive. Taking calls or answering emails on the way in doesn’t convert the trip into business use.7Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
Two exceptions save real money. First, if you have a regular workplace and also drive to a temporary work location in the same business, the round trip to that temporary site is deductible. Second, if your home is your principal place of business (a genuine home office), you can deduct the drive from home to any other work location in that business, temporary or not.7Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses For freelancers and remote workers visiting clients, that second exception is often the whole ball game.
Trips That Mix Business and Personal
When a single trip serves both purposes, only the business portion is deductible. For domestic travel where business is the primary purpose, your transportation to and from the destination is fully deductible, and you allocate other expenses between business and personal days. International travel uses a stricter day-by-day allocation.7Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
Two Ways to Deduct: Standard Mileage or Actual Expenses
Eligible taxpayers pick one of two methods, and the choice affects how gas gets treated.
The Standard Mileage Rate
The simpler method multiplies your business miles by a fixed per-mile rate. For 2026, that rate is 72.5 cents per mile.1Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents It bundles fuel, oil, insurance, depreciation, and general wear into a single figure. Drive 15,000 business miles and you claim $10,875 before adding tolls and parking, which you can add on top.
Because the rate already includes gas, you can’t separately deduct fuel when you use it. That would be double-counting. The same rate applies to gasoline, diesel, hybrid, and fully electric vehicles, so an EV driver’s charging costs are effectively covered by the same per-mile figure as a gas driver’s fuel.1Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents
One timing rule catches people. If you own the vehicle, you have to elect the standard mileage rate in the first year the car is available for business use. Choose actual expenses that first year and you’re locked out of the mileage rate for that vehicle forever. For leased vehicles, the choice is even more rigid: you must stick with the same method for the entire lease, including renewals.8Internal Revenue Service. Notice 2026-10, 2026 Standard Mileage Rates
The Actual Expenses Method
The actual expenses method deducts what you really spent to operate the vehicle: gas, oil, tires, repairs, insurance, registration, lease payments, and depreciation.9Internal Revenue Service. Car and Truck Expense Deduction Reminders Total your operating costs for the year, figure out what percentage of your miles were for business, and deduct that percentage. If you spent $8,000 running the car and 70 percent of your miles were business, your deduction is $5,600.
This is where gas shows up as a line item you actually track. It usually beats the standard rate for drivers with high fuel costs, heavy maintenance, or vehicles that get poor mileage. The tradeoff is more record-keeping.
If You’re an Employee: Reimbursement Is the Answer
Since most employees can no longer deduct business gas on their own returns, employer reimbursement is the only practical way to recover the cost. Under an accountable plan, your employer reimburses you and neither of you pays tax on the payment. It doesn’t show up on your W-2 as income. To qualify, the plan must meet three requirements: each expense has to have a business connection, you have to substantiate it within a reasonable time, and you have to return any excess.10eCFR. 26 CFR 1.162-1 – Business Expenses
Most employers who reimburse pay at the IRS standard mileage rate because it’s clean and creates no tax complications. If yours reimburses below the rate, the shortfall isn’t deductible for most employees under current law. If it reimburses above the rate, the excess is taxable income. If your employer has no reimbursement program and you drive a lot for work, it’s worth raising: accountable-plan payments aren’t subject to payroll taxes, so reimbursing you costs less than giving you an equivalent raise.
Records You Have to Keep
The IRS requires adequate records showing four things for each deductible trip: the amount, the time and place of travel, the business purpose, and the business relationship.11Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses In practice that means a mileage log with the date, destination, starting and ending odometer readings, and a short note about why the trip was for business.
Using the actual expenses method adds another layer: receipts for gas, maintenance, insurance, and every other cost you claim, each showing date, amount, and vendor. Digital records are fine, whether that’s scanned receipts, a mileage app, or a spreadsheet, as long as the storage system maintains data integrity and creates an audit trail back to your return.12Internal Revenue Service. Rev. Proc. 98-25
The burden of proof is on you, not the IRS.13Internal Revenue Service. Burden of Proof Vehicle expenses draw more scrutiny than most write-offs because auditors know personal driving tends to sneak in. If your records don’t hold up, the whole deduction can be thrown out, and you can be hit with a 20 percent accuracy-related penalty on top of the extra tax.14Internal Revenue Service. Accuracy-Related Penalty Reconstructing a log from memory in April is exactly what auditors are trained to spot. A phone app that captures trips automatically, checked briefly each day, produces the kind of record that survives review.