CluenexWhat is mileage reimbursement?
Mileage reimbursement is a payment from an employer to an employee for using a personal vehicle for business. It is usually calculated as business miles multiplied by a per-mile rate.
Business driving means things like visiting clients, running errands between job sites or making deliveries. It does not include the normal trip between home and your regular workplace, which the IRS treats as a personal commute.
The payment is a repayment, not a bonus. It replaces money you already spent on fuel, tires, repairs, insurance and the car losing value.
What is the IRS standard mileage rate for 2026?
The IRS announced a business standard mileage rate of 72.5 cents per mile for 2026. The rate for miles driven in service of charities is 14 cents per mile, which is set by law and does not follow the business rate.
The IRS builds the business rate from the average cost of owning and operating a car: fuel, maintenance, insurance and depreciation (the drop in a car's value over time). It normally publishes the new rate in late year and applies it for the full next year.
The IRS can change a rate in the middle of a year when fuel costs move sharply. It did so in 2022, raising the business rate from 58.5 to 62.5 cents for July through December. Before using any rate, check the IRS standard mileage rates page for the current figure and effective dates.
| Use | 2026 rate | Who sets it |
|---|---|---|
| Business | 72.5 cents per mile | IRS notice |
| Charitable service | 14 cents per mile | Federal statute |
Worked example: 400 business miles in a month at 72.5 cents is 400 x 0.725 = $290.
Is mileage reimbursement taxable?
Generally no, if it is paid under an accountable plan and does not exceed the IRS rate. An accountable plan is an employer arrangement that requires a business purpose, proof of the expense (such as a mileage log) and the return of any excess money.
Under the IRS rules for these plans, reimbursement at or below the standard rate counts as a substantiated amount, so it does not show up as wages. If an employer pays more than the IRS rate, the excess is generally treated as taxable pay. If the employer has no accountable plan, the payments may be treated as wages.
Worked example: you drive 12,000 business miles in a year. At 72.5 cents, the full reimbursement is 12,000 x 0.725 = $8,700. Paid under an accountable plan, you keep all $8,700 with no income tax or payroll tax taken out.
Does my employer have to reimburse me at the IRS rate?
Not under federal law. The IRS rate is a safe harbor for tax treatment, not a pay requirement. Some states, such as California, require employers to reimburse necessary business expenses, and many employers use the IRS rate to meet that duty. Rules differ by state, so check your state labor department if you are unsure.
If your employer pays less than the IRS rate, you absorb the gap. Using the 12,000-mile example, a 50-cent rate pays $6,000 against $8,700 at the IRS rate, a shortfall of $2,700.
The IRS rate is an average. Your real cost per mile may be higher or lower depending on your car, fuel prices and local insurance costs.
Can employees deduct unreimbursed mileage?
Generally not on a federal return. Unreimbursed employee business expenses were a miscellaneous itemized deduction, and that deduction has been suspended since 2018. Recent tax legislation made that suspension permanent, with limited exceptions such as certain military reservists and some performing artists.
This makes the employer's reimbursement policy matter more. If you drive a lot for work and are not repaid, the cost comes out of your after-tax pay.
How does the self-employed mileage deduction work?
Contractors, freelancers and gig drivers have no employer to repay them. They deduct business miles at the standard rate on Schedule C, which lowers net profit.
Worked example: a freelancer drives 10,000 business miles at 72.5 cents. The deduction is 10,000 x 0.725 = $7,250.
If that person is in the 22% federal bracket, income tax falls by about 0.22 x $7,250 = $1,595. Self-employment tax (15.3% on 92.35% of net earnings) also falls by roughly $7,250 x 0.9235 x 0.153 = about $1,024. The benefit is the tax saved, not the $7,250 itself.
The IRS also allows deducting actual costs (gas, repairs, insurance, depreciation) times the business-use share. In general, if you want the standard rate for a car you own, you must choose it in the first year you use that car for business. Pub 463 has the details.
What records do I need?
Keep a mileage log recorded at or near the time of each trip. For each trip, write down:
- The date
- Starting point and destination
- The business purpose
- Miles driven
Also note the odometer reading at the start and end of the year. A phone app or a notebook in the car both work. Rebuilding a year of trips from memory at tax time is a common reason claims fail in a review.
Where does the mileage rule fall short?
The standard rate does not fit every driver. A person with an older, cheap-to-run car may be paid more than the real cost. A person with an expensive vehicle or high local insurance may be paid less.
The rate also covers only the car. It does not cover your time, and it does not cover parking or tolls, which are usually reimbursed separately.
Common mistakes:
- Counting the commute as business miles.
- Using an old year's rate.
- Skipping the log.
- Treating reimbursement as extra income to spend.
- Assuming the employer must pay the IRS rate in every state.
What this means for you
If you have a regular job and use your own car for work, a few checks pay off:
- Find your employer's mileage policy and compare its rate with the current IRS rate. If it is lower, ask whether your state requires full reimbursement.
- Start a mileage log today, not at year-end.
- Confirm the reimbursement is paid under an accountable plan. It should not show up as taxable wages on your pay stub.
- If you freelance, track miles separately from personal driving and ask a tax professional whether the standard rate or actual costs suits you.
- Decide in advance where recovered money goes. Reimbursement is repayment, so treat it as a refill of what you spent first. Only the extra you actually save, such as a tax saving or a successful negotiation, is truly new money.
Worked example of investing a tax saving: if the $1,595 yearly saving above were invested each year at a hypothetical 6% annual return for 20 years, it would grow to about $58,700. That figure is an illustration, not a forecast, and real returns vary and can be negative.
Automating a transfer is one way to keep the money from blending into spending. See the guide on dollar-cost averaging for how regular investing works, and index funds vs picking your own stocks for what the data says about the choice. If the money arrives as a lump sum, the unexpected money and taxes checklist lists what to check first.