Whether employers have to pay mileage reimbursement depends on where you work and how much you earn. There is no across-the-board federal requirement to pay for the miles you drive on the job. Federal law steps in only when unreimbursed driving costs pull your effective pay below the minimum wage. A handful of states go further and require reimbursement no matter what you make.
The Federal Minimum Wage Floor
The Fair Labor Standards Act does not mention mileage reimbursement. It does require that your employer pay you at least the federal minimum wage of $7.25 per hour “free and clear.” Under the Department of Labor’s kickback rule, an employer-required expense that eats into your minimum wage is treated the same as if the employer had reached back into your paycheck.1eCFR. 29 CFR 531.35 – Free and Clear Payment; Kickbacks
That rule applies to vehicle costs the same way it applies to tools and uniforms. If your employer requires you to drive your own car and the fuel, maintenance, and wear costs drag your effective hourly earnings below $7.25 in any workweek, the employer has to reimburse enough to close the gap.2U.S. Department of Labor. Fact Sheet 16 – Deductions From Wages for Uniforms and Other Facilities Under the FLSA The math: add your gross wages for the week, subtract your unreimbursed work driving costs, divide by hours worked. If the number is under minimum wage, the employer owes the difference.
This mostly protects lower-wage workers. A delivery driver making $9 an hour and driving 200 miles a week can hit the threshold quickly. Anyone earning well above minimum wage rarely triggers the rule, which is why the federal floor alone leaves many workers uncovered.
States That Require Reimbursement Regardless of Pay
A small number of states require employers to reimburse necessary business expenses no matter what the employee earns. California, Illinois, and Massachusetts have the most well-known mandates. Montana also requires reimbursement when expenses are a direct result of job duties. In these states, the question is not whether your wages dipped below the minimum. The principle is that an employer should not shift the cost of running its business onto its workers.
The specifics vary. Some statutes cover all “necessary expenditures” incurred in performing your job. Others focus more narrowly on expenses the employer directed you to incur. Many employers in these states default to the IRS standard mileage rate as an easy way to comply, though the law generally requires covering the employee’s actual costs.
If you work in a state without a reimbursement statute, the federal minimum-wage floor is your only legal protection unless your employment contract or company policy promises more.
Commuting Does Not Count
Your daily drive between home and your regular workplace is a commute, and no law requires your employer to pay for it. Business mileage is everything else: driving from the office to a client site, moving between company locations during the day, or running work errands like a supply run. Only business mileage can trigger a reimbursement obligation.
A few situations cause confusion:
- If your manager sends you to a second worksite during the workday, the miles between your usual workplace and that location are business travel.
- Driving from home straight to a client before ever stopping at your own workplace is generally treated as commuting. If you stop at your regular office first and then drive to the client, that second leg is business mileage.
- If your home qualifies as your principal place of business, the IRS treats travel from home to any other work location as business mileage, which matters for remote workers who occasionally travel to a company office or client site.3Internal Revenue Service. Revenue Ruling 99-7 – Traveling Expenses
How the Amount Gets Calculated
When reimbursement is owed or offered, employers usually use one of two methods.
The common approach is a flat per-mile payment tied to the IRS standard business mileage rate. For 2026 that rate is 72.5 cents per mile.4Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile The rate is designed to cover gas, oil, maintenance, insurance, depreciation, and other operating costs in one number. Log your business miles, multiply by the rate, and that is the payment. Employers are not required to use the IRS number. Some pay more, some pay less. The rate matters mostly because it sets the line between taxable and non-taxable reimbursement.
The other method is the actual expense approach: you track every vehicle cost for the year (fuel, oil changes, repairs, tires, insurance, registration, depreciation), then apply the business-use percentage of your driving.5Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses The recordkeeping is heavier, but the result can be higher for people with expensive vehicles or costly repairs.
Whether the Payment Is Taxable
Whether mileage reimbursement lands on your W-2 as taxable income depends on how the employer structures the plan. The IRS splits reimbursement arrangements into two categories.
Under an accountable plan, reimbursement is excluded from taxable income. To qualify, the expenses must have a business connection, you must document them for your employer within a reasonable time, and you must return any payment that exceeds what you substantiated. A mileage log submitted to your employer generally does this. As long as the rate does not exceed the IRS standard rate, the per-mile payment satisfies the adequate accounting requirement without receipts. If the employer pays above the IRS rate, the excess is taxable. Pay 80 cents per mile in 2026 and the first 72.5 cents is tax-free; the remaining 7.5 cents per mile is added to your W-2.5Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
A flat monthly car allowance with no tracking or documentation is a non-accountable plan. The full amount is taxable wages, reported in Box 1 of your W-2, subject to income tax and payroll withholding.5Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses A $500 monthly allowance sounds generous, but after taxes you might net $350, which may or may not cover your driving.
What to Do If Your Employer Refuses
Your recourse depends on which law applies.
If unreimbursed driving is pushing your effective pay below the federal minimum wage, you can file a complaint with the Department of Labor’s Wage and Hour Division. Filing is free, the process is confidential, and the agency investigates regardless of immigration status. The WHD help line is 1-866-487-9243, Monday through Friday.6U.S. Department of Labor. Frequently Asked Questions – Complaints and the Investigation Process
The remedies can be significant. Under the FLSA, an employer found liable owes the unpaid wages plus an equal amount in liquidated damages, effectively doubling the recovery.7Office of the Law Revision Counsel. 29 U.S. Code 216 – Penalties Non-willful claims must be filed within two years; willful violations get three.6U.S. Department of Labor. Frequently Asked Questions – Complaints and the Investigation Process
In a state with a mandatory reimbursement law, you typically file a wage claim through the state labor agency instead. Penalties and deadlines vary, but the process is similar: file, document your unreimbursed expenses, and the agency investigates. Employees who lose these disputes almost always lose because they cannot show how many miles they actually drove. Keep a contemporaneous mileage log from day one.
One Gap Reimbursement Does Not Cover
Reimbursement addresses operating costs, not what happens after a crash. Most personal auto policies exclude or limit coverage for regular business use, so if you are making deliveries, transporting clients, or otherwise using your car as a daily work tool, your insurer may deny a claim. Some employers carry Hired and Non-Owned Auto coverage, which sits over your personal policy when you drive your own car for work and covers the employer’s liability if you injure someone or damage property on the job. If your employer asks you to drive regularly, ask whether that coverage is in place. Without it, and with a personal policy that excludes business driving, an accident can leave you exposed to significant out-of-pocket liability.