What Is the National Average for Mileage Reimbursement?

The national average for mileage reimbursement tracks the IRS standard business mileage rate, which is 72.5 cents per mile for 2026.¹ Private employers and government agencies lean on this figure because paying at or below it keeps the money tax-free for the employee and fully deductible for the employer. There is no federal law requiring any particular rate, but the tax treatment is strong enough that the IRS number has become the de facto standard.

The 2026 IRS Rates

The IRS updates its mileage rates each year based on an independent study of vehicle operating costs. For 2026:

Business driving: 72.5 cents per mile
Medical purposes: 20.5 cents per mile
Military moving (active-duty, permanent change of station only): 20.5 cents per mile
Charitable volunteering: 14 cents per mile

The business, medical, and military moving rates move with fuel prices, insurance costs, and depreciation trends.¹ The charitable rate is fixed in statute at 14 cents and does not change with economic conditions.²

What the Rate Covers

The 72.5-cent figure is not a gas allowance. It bundles the full cost of owning and operating a vehicle: fuel, oil, tires, maintenance, repairs, insurance, registration, and depreciation. For 2026, the IRS treats 35 cents of the business rate as depreciation, meaning the gradual loss of a vehicle’s value over time.¹

Parking fees and tolls tied to business travel are not inside the rate. You can claim those on top of your per-mile reimbursement, as long as they are for business and not for parking at your regular workplace or tolls on your daily commute.³

Which Miles Actually Count

The most common mistake is counting the daily commute. Driving from home to your regular workplace and back is personal, and it is never reimbursable or deductible, no matter the distance.⁴

Business miles start once you leave your regular workplace to travel to a client site, a second office, a meeting, or another work destination. If your home office qualifies as your principal place of business, trips from home to client locations generally count as business miles.

There is a narrower rule for temporary assignments. If you have a regular office and are sent to a temporary site expected to last one year or less, mileage from your home to the temporary site counts as business travel. Once the assignment is expected to last longer than a year, or actually does, the location becomes your new regular workplace and the drive reverts to a non-reimbursable commute.⁵

Records You Need to Keep

Whether you are an employee seeking reimbursement or self-employed claiming a deduction, the IRS expects a contemporaneous log with four items for every trip:

Date of the trip
Destination (city, town, or area)
Business purpose (client meeting, delivery, site visit, and so on)
Mileage, either odometer readings or total trip miles

These requirements come from IRS Publication 463 and apply equally to paper logs, spreadsheets, and tracking apps.⁵ Logging in real time is far more credible on audit than reconstructing a log months later. If you keep electronic records, the IRS wants exact copies of the original entries, not condensed or reformatted summaries.⁶

How Reimbursements Are Taxed

Whether your reimbursement is taxable turns on whether your employer runs what the IRS calls an “accountable plan.” Three conditions must be met: the expense has a business connection, you substantiate it with records, and you return any amount paid in excess of your documented expenses. When all three are satisfied, the reimbursement is excluded from gross income and does not show up on your W-2.⁷

Pay at or below 72.5 cents per mile with proper logs, and the reimbursement is tax-free. Two situations change that:

If your employer pays more than the IRS rate, the excess is taxable wages, subject to income tax withholding and payroll taxes.
If your employer hands you a flat car allowance without requiring mileage logs, the entire amount is taxable because the arrangement fails the accountable plan rules.⁷

A flat allowance that looks generous on paper can shrink noticeably after taxes, while a documented per-mile reimbursement at the IRS rate reaches you whole.

Is Your Employer Required to Pay It?

No federal law directly requires mileage reimbursement. The Fair Labor Standards Act creates an indirect floor through the “kickback” rule: if unreimbursed work expenses, including the cost of driving your personal vehicle for job duties, pull your effective hourly pay below the federal minimum wage of $7.25 per hour, the employer has violated the FLSA.⁸ The same logic applies to overtime pay. The rule matters most for delivery drivers, home health aides, and other workers whose pay sits near minimum wage and whose jobs demand heavy vehicle use.⁹

A handful of states go further and directly require employers to reimburse necessary business expenses, mileage included. These statutes vary: some cover all employee-incurred work expenses, others target specific industries or categories. In states with mandatory reimbursement laws, employers that fail to pay can face penalties, back-pay claims, and labor department investigations. If you are not sure whether your state has such a law, check with your state’s department of labor or an employment attorney.

1
Internal Revenue Service. 2026 Standard Mileage Rates
2
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts
3
Internal Revenue Service. Car and Truck Expense Deduction Reminders
4
Internal Revenue Service. Topic No. 511, Business Travel Expenses
5
Internal Revenue Service. Publication 463, Travel, Gift, and Car Expenses
6
Internal Revenue Service. Use of Electronic Accounting Software Records: Frequently Asked Questions and Answers
7
eCFR. 26 CFR 1.62-2 – Reimbursements and Other Expense Allowance Arrangements
8
eCFR. 29 CFR 531.35 – Free and Clear Payment; Kickbacks
9
U.S. Department of Labor. Handy Reference Guide to the Fair Labor Standards Act