Can You Write Off Gas on Taxes for Work: Miles, Methods, Records

You can write off gas on your taxes for work only if you’re self-employed or fall into a narrow set of employee categories the IRS still allows. For everyone else, gas and other vehicle costs for a W-2 job are no longer deductible on your federal return. If you do qualify, you have two ways to claim the deduction: a flat per-mile rate that already includes gas, or the actual costs you paid during the year. For 2026, the IRS standard mileage rate is 72.5 cents per mile, which covers gas, maintenance, insurance, and depreciation in a single figure.¹

Who Qualifies to Deduct Gas and Vehicle Costs

Federal law lets you deduct “ordinary and necessary” expenses of carrying on a trade or business, and vehicle costs fall into that category when you drive as part of your work.² Whether you personally get to claim it depends on how the IRS classifies your working relationship.

Self-Employed and Gig Workers

If you’re a sole proprietor, independent contractor, freelancer, or gig worker receiving a 1099-NEC, you can deduct the business share of your vehicle costs on Schedule C (Form 1040). The deduction lowers both your income tax and your self-employment tax.³ If you use the same vehicle for personal driving too, you have to split expenses between the two uses.

Statutory Employees

Some workers receive a W-2 with the “Statutory employee” box checked. This category covers full-time life insurance sales agents, certain traveling salespeople, certain delivery drivers, and people who work at home on materials supplied by the employer. Statutory employees report vehicle expenses on Schedule C, the same way self-employed workers do.⁴

Four Employee Categories That Still Qualify

A small number of W-2 employees can still deduct unreimbursed vehicle expenses using Form 2106:

Armed Forces reservists, for travel more than 100 miles from home in connection with reserve service.
Qualified performing artists who meet specific income and employment tests.
Fee-basis state or local government officials, compensated at least partly on a fee basis rather than a salary.
Employees with impairment-related work expenses, for disability-related costs necessary to perform the job.

The deduction flows from Form 2106 to Schedule 1 (Form 1040) as an adjustment to income.⁵

Most W-2 Employees Can’t Deduct Anything

The Tax Cuts and Jobs Act of 2017 suspended miscellaneous itemized deductions, including unreimbursed employee expenses, starting in 2018. The suspension had been scheduled to expire after 2025, but the One Big Beautiful Bill Act permanently eliminated the deduction by removing the sunset date.⁶ If you’re a regular W-2 employee who doesn’t fit one of the categories above, you can’t deduct gas, mileage, or any other vehicle expense on your federal return, even if your employer doesn’t reimburse you. Some states still allow unreimbursed employee expense deductions on state returns, so check your state’s rules separately.

Which Miles Actually Count

Even when you qualify, not every work-related trip is deductible. The IRS draws a firm line between commuting, which is personal, and business driving.

Commuting Is Never Deductible

Driving from home to your regular workplace is personal commuting, no matter how far you go. Taking business calls during the drive doesn’t change that. Neither does hauling tools or instruments in your car, though you can deduct any additional cost the hauling creates, such as renting a trailer.³

Trips That Do Count

Miles driven for a clear business purpose during or between work activities qualify. Common examples:

Driving between job sites in the same day.
Going from your office to meet a client at their location.
Trips to the bank for business deposits, the post office for business mail, or a store for supplies you need for work.

These are treated as ordinary and necessary for operating your business.³

Temporary Job Sites

If you have a regular workplace and are sent to a temporary job site expected to last one year or less, driving from home to that temporary site is deductible. Once the assignment is realistically expected to last longer than a year, the location becomes your regular workplace and the deduction goes away, even if you haven’t actually worked there a full year yet.⁷

Home Office as Your Principal Place of Business

If your home office qualifies as your principal place of business under IRS rules, every trip from your home to a client, customer, or other work location in the same trade or business is deductible. Without a qualifying home office, those same trips would be non-deductible commuting.³

Standard Mileage Rate or Actual Expenses

If you qualify, you pick one of two methods to calculate the deduction.

The Standard Mileage Rate

Multiply your business miles by the annual rate. For 2026, that’s 72.5 cents per mile.¹ The rate is meant to cover gas, oil, repairs, tires, insurance, registration, and depreciation in one figure, so you can’t deduct any of those separately when you use it. Parking fees and tolls for business trips are still deductible on top of the mileage rate.⁸ The 72.5-cent rate applies whether the vehicle runs on gasoline, diesel, or electricity.

There’s a first-year rule. If you own the vehicle, you have to pick the standard mileage rate in the first year the car is available for business use if you want the option of using it later. If you lease the vehicle and pick this method, you have to stick with it for the entire lease. You can switch to actual expenses in a later year, but if you do, you must use straight-line depreciation for the rest of the car’s life.⁸

The Actual Expenses Method

Instead of the per-mile rate, you can add up what you actually spent. Qualifying costs include gas, oil, repairs, tires, insurance, registration, license fees, lease payments, and depreciation.⁸ You figure the business portion by dividing business miles by total miles for the year, then applying that percentage to your total vehicle costs. Parking and tolls for business driving are again deductible on top.

This method takes more record-keeping because you need receipts for each category throughout the year. It tends to produce a larger deduction for vehicles with high operating costs (expensive repairs, high insurance, heavy fuel use), while the standard rate often works better for newer, fuel-efficient cars.

What W-2 Employees Can Do Instead

If you’re a regular W-2 employee who can’t deduct vehicle expenses directly, your practical option is to get reimbursed by your employer under an accountable plan. Payments made through an accountable plan are excluded from your taxable income and don’t show up in Box 1 of your W-2.³

Three conditions have to be met:

Business connection. The expenses relate to your work duties.
Adequate accounting. You give your employer records of each expense (dates, locations, business purpose, mileage) within a reasonable time.
Return of excess. If you get more than you can substantiate, you return the difference within a reasonable time.

Your employer can reimburse at the standard mileage rate or under a fixed-and-variable-rate (FAVR) allowance. Miss any of the three conditions and the reimbursement becomes taxable income under a nonaccountable plan.³

Records You Need to Keep

No matter which method you use, you need a contemporaneous mileage log, meaning a record made at or near the time of each trip. For every business trip, include the date, starting point, destination, business purpose, and miles driven.⁹

If you use the actual expenses method, keep receipts or documentation for every cost category as well: gas, oil, repairs, tires, insurance premiums, registration fees, and lease payments or the vehicle’s original purchase price for depreciation. A mileage log still matters under this method because it establishes your business-use percentage.⁹

GPS-based mileage apps are acceptable as long as they capture enough detail (date, distance, destination, business purpose) to support your entries, and you can produce the records if the IRS asks.¹⁰ Keep logs and receipts for at least three years after filing, which covers the standard IRS audit window.¹¹

Audit Risk if You Get It Wrong

Vehicle deductions get close IRS attention because the line between personal and business driving is easy to blur. Inflate your business mileage or claim a deduction you don’t qualify for and the IRS can assess an accuracy-related penalty of 20% on the portion of the underpayment caused by the error.¹² The penalty applies whether the issue is treated as negligence or as a substantial understatement of income tax.

Failing to keep adequate records is itself treated as an indicator of negligence during an audit.¹³ If you can’t produce a mileage log or receipts, the IRS can disallow the entire deduction. A detailed, contemporaneous log is the best protection you have.

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 162 – Trade or Business Expenses
3
Internal Revenue Service. Publication 463 (2024), Travel, Gift, and Car Expenses
4
Internal Revenue Service. Statutory Employees
5
Internal Revenue Service. Instructions for Form 2106 (2025)
6
United States Senate Committee on Finance. Finance Committee Legislative Text Title VII
7
Internal Revenue Service. Topic No. 511, Business Travel Expenses
8
Internal Revenue Service. Topic No. 510, Business Use of Car
9
Internal Revenue Service. Car and Truck Expense Deduction Reminders
10
Internal Revenue Service. Automated Records
11
Internal Revenue Service. How Long Should I Keep Records?
12
Internal Revenue Service. Accuracy-Related Penalty
13
Internal Revenue Service. Penalty Considerations