Can You Claim Mileage and Gas on Your Taxes? Methods and Records

You cannot claim both mileage and gas on your taxes for the same vehicle. The IRS standard mileage rate already includes the cost of fuel, along with oil, insurance, repairs, depreciation, and general wear and tear, so deducting gas on top of the per-mile rate would be counting the same expense twice.¹ If you want to deduct gas as its own line item, you have to use the actual expense method instead and skip the per-mile calculation entirely.

For 2026 business driving, the standard mileage rate is 72.5 cents per mile.² Pick one method per vehicle, per year, and stick with the rules that method carries.

The Two Methods, Side by Side

Every vehicle deduction runs through one of two calculations. They are mutually exclusive on the same car in the same year.

Standard mileage rate. Multiply your qualifying business miles by the IRS rate. A freelancer who drives 15,000 business miles in 2026 deducts $10,875 without saving a single fuel receipt. Once you choose this method, you cannot separately deduct gas, oil, insurance, repairs, tires, registration fees, or depreciation, because those costs are all folded into the per-mile figure.¹ Parking and tolls you paid on business trips are deductible on top of the rate, and business-related interest on a car loan can also be claimed separately on Schedule C.

Actual expense method. Add up every dollar you spent operating the car during the year, then multiply by your business-use percentage. Qualifying costs include gas, oil changes, tires, repairs, insurance premiums, registration fees, lease payments, and depreciation on vehicles you own.³ Business-use percentage comes from your mileage log: drive 20,000 total miles with 12,000 for business, and you deduct 60% of each qualifying expense.⁴

The actual expense method tends to produce a bigger deduction for expensive vehicles, newer cars with heavy depreciation, and cars with high maintenance costs. The standard rate usually wins for older, fuel-efficient cars driven a lot of business miles. Either way, gas belongs to one method only.

Can You Deduct Vehicle Expenses at All

For most W-2 employees, the answer is no. The Tax Cuts and Jobs Act eliminated the deduction for unreimbursed employee business expenses starting in 2018, and the One, Big, Beautiful Bill Act signed in 2025 made that elimination permanent. If your employer does not reimburse you for work driving, there is no federal deduction available, even if you use your personal car for work every day.⁵

Vehicle deductions are now available primarily to self-employed people and independent contractors who report business income on Schedule C. A few employee categories still qualify: Armed Forces reservists who travel more than 100 miles from home for reserve duties, qualified performing artists, and fee-basis state or local government officials. Those workers use Form 2106.³

Which Trips Qualify

The IRS looks at why you drove, not just how far. Your daily commute from home to a regular workplace never counts, no matter the distance.⁶ Beyond that, four categories of driving produce a deduction, each with its own 2026 rate.

Business travel at 72.5 cents per mile. This covers driving between work locations, visiting clients, going to meetings, or traveling to a temporary job site. If you have a qualifying home office that serves as your principal place of business, trips from that home office to a client are fully deductible instead of counted as commuting.⁴
Medical care at 20.5 cents per mile, or actual out-of-pocket gas and oil (but not depreciation or insurance) for medical trips. Medical transportation is deductible only to the extent your total medical expenses exceed 7.5% of your adjusted gross income.⁷⁸
Charitable service at 14 cents per mile. That rate is set by statute and does not change from year to year.⁷
Military moves at 20.5 cents per mile for active-duty members relocating under a permanent change of station order. Active-duty movers are the only group that can still deduct moving expenses.⁹

Parking fees and tolls come off the top on any of these categories. They are not baked into the per-mile figure, so keep those receipts even if you use the standard rate.⁸

Choosing a Method and Switching Later

Which method you pick the first year the vehicle is available for business use shapes your options for every year after that.³

Start with the standard mileage rate, and you can switch to actual expenses in any later year. If you switch, you have to use straight-line depreciation for the vehicle’s remaining useful life. No accelerated depreciation and no Section 179 deduction at that point.
Start with actual expenses and claim any accelerated depreciation, bonus depreciation, or Section 179 on the car, and you are permanently locked out of the standard mileage rate for that vehicle. Actual expenses are the only option for as long as you own it.
Leased vehicles are one-and-done. If you want the standard mileage rate on a lease, you have to use it for the entire lease term. Switching partway through, in either direction, is not allowed.⁴

If you are not sure which method will save you more, using the standard mileage rate in the first year preserves your ability to switch later. Going the other direction is far more restricted.

Records You Need Either Way

The IRS wants what it calls a timely kept log, meaning you record trip details at or near the time you drive, not from memory at tax time. A log reconstructed in April carries much less weight in an audit than one maintained all year.⁴

Every entry needs four things: the date, where you went, the business purpose, and the miles driven. Record your odometer on January 1 and December 31 so you can calculate total miles and business-use percentage.¹⁰ Under the actual expense method, add receipts for every cost: fuel, repairs, insurance, registration, and lease or loan statements. Receipts are required for any individual expense of $75 or more, though keeping all of them is the safer practice. A smartphone app that logs GPS mileage and stores photos of receipts satisfies IRS requirements and is much easier to maintain than a paper notebook.

Weak records don’t just shrink your deduction in an audit. They can wipe it out and trigger a 20% accuracy-related penalty on the resulting underpayment.¹¹

Where the Deduction Goes on Your Return

Self-employed taxpayers report vehicle expenses on Schedule C, which flows into Schedule 1 and then Form 1040.¹² The reservists, performing artists, and fee-basis officials who still qualify as employees use Form 2106.¹⁰ Medical mileage lands on Schedule A with other itemized medical expenses, and charitable mileage sits on Schedule A as a charitable contribution.

Keep your logs, receipts, and supporting documents for at least three years from the date you filed, which is the standard audit window.¹³ If you claimed depreciation, hold cost-basis records longer, because you will need them to calculate gain or loss when you sell or trade in the car.

1
Internal Revenue Service. Rev. Proc. 2019-46
2
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents per Mile, Up 2.5 Cents
3
Internal Revenue Service. Topic No. 510, Business Use of Car
4
Internal Revenue Service. Publication 463 (2025), Travel, Gift, and Car Expenses
5
Internal Revenue Service. Here’s the 411 on Who Can Deduct Car Expenses on Their Tax Returns
6
Internal Revenue Service. Topic No. 511, Business Travel Expenses
7
Internal Revenue Service. 2026 Standard Mileage Rates
8
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
9
Internal Revenue Service. Instructions for Form 3903 (2025)
10
Internal Revenue Service. Instructions for Form 2106, Employee Business Expenses
11
Internal Revenue Service. Accuracy-Related Penalty
12
Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025)
13
Internal Revenue Service. Topic No. 305, Recordkeeping