Employee Mileage Reimbursement: A Complete Guide

If you are a W-2 employee who drives your personal vehicle for work, your employer may legally owe you reimbursement. Whether they do depends on your state and your employer's reimbursement policy.

When reimbursement is required by law

Nine states require private employers to reimburse business mileage: California (Labor Code §2802), Illinois (820 ILCS 115/9.5), Massachusetts, New York (limited), Washington, New Hampshire (RSA 275:57), North Dakota, Montana, and Iowa. See your state's rules.

When it is voluntary

In the other 41 states, employer reimbursement is voluntary. Most large employers offer it as policy because it is a meaningful retention factor for field-based workers. If yours does not, ask. The IRS standard rate (72.5¢/mile in 2026) is the typical benchmark.

How reimbursement is taxed

Reimbursement at or below the IRS rate, paid through an "accountable plan" (with mileage logs and business purpose documented), is tax-free to you. Reimbursement above the IRS rate is taxable as wages. Flat-amount car allowances not tied to mileage logs are typically fully taxable.

What the employer can offer

• Per-mile reimbursement at IRS rate (most common)
• FAVR: fixed monthly stipend plus per-mile variable rate (large fleets)
• Flat car allowance (simple but tax-inefficient)
• Actual expense reimbursement (rare; complex)

What you need to claim it

A clean mileage log with date, destination, business purpose, and miles per trip. Most employers also require a reimbursement form (often monthly). Track miles in real time rather than reconstructing at month-end.

If your employer does not reimburse you

In the nine mandate states, you can file a wage claim with the state Department of Labor or sue in civil court. The federal W-2 deduction is gone permanently, so reimbursement is your only path to recover the cost.

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