How to handle employee expense reimbursement the right way

Employee expense reimbursement is how you pay back employees who spend their own funds on business expenses like mileage or travel. Under an IRS accountable plan, those payments are not wages, so no income tax, Social Security, Medicare, or FUTA tax applies. Without that plan, the same money counts as taxable pay.

A copy-ready policy template is at the end.

What counts as a reimbursable business expense?

Reimbursable expenses are job-related expenses an employee pays with personal money while working for you. Mileage and supplies bought for a job are typical. So are travel costs like hotels and rental cars. Anything personal stays with the employee, even on a workday.

The IRS test asks whether the employee paid or incurred a deductible business expense while performing services for you. So work-related purchases like printer ink for a client job count, while a phone for home use does not. These rules cover out-of-pocket expenses for employees only. If a worker sends you invoices instead of receipts, check your employee versus contractor classification first.

How does an accountable plan keep reimbursements tax-free?

An accountable plan is a reimbursement arrangement that meets three IRS rules. It needs a business connection, proof of each expense within a reasonable time, and return of any extra money. When your plan meets all three, the payments aren’t wages and carry no payroll tax.

That wording comes from IRS Publication 15. It says amounts paid under this kind of plan aren’t subject to income, Social Security, Medicare, or FUTA taxes. The regulation behind it is Treasury Regulation 1.62-2. So the tax treatment of the same mileage check depends on the plan you pay it under.

The three IRS rules

1. Business connection. The employee paid or incurred a deductible expense while doing work for you.
2. Substantiation. The employee proves the expense to you within a reasonable period of time.
3. Return of excess. The employee gives back any amount above the proven expenses within a reasonable period.

Miss any one of these and the money stops being a tax-free reimbursement. A travel advance with no receipt rule and no payback rule fails the second and third tests at once.

Safe harbor timelines for receipts and returns

The IRS doesn’t set one hard deadline. Instead, it accepts certain timelines as reasonable, which it calls safe harbors. Outside them, the facts and circumstances of each case decide.

A monthly cycle for expense reports fits inside the 60-day window. You can pick any reimbursement schedule that keeps proof inside that window, but check your state’s rules on payout timing. If you use the quarterly statement route instead, put the dates on your calendar so they don’t slip.

When does a reimbursement become taxable income?

A reimbursement becomes taxable income when it fails the IRS plan rules. That happens if the employee skips receipts or turns them in late, or keeps extra advance money past the reasonable period. It also happens if you pay whether or not you reasonably expect any business expense.

When the arrangement itself skips the rules, Treasury Regulation 1.62-2 says all amounts paid under it are wages. Payments under a nonaccountable plan go through payroll with withholding. Our federal and state payroll taxes guide covers what you owe on them, and our small business payroll guide walks through the pay run.

Flat monthly allowances

A flat monthly allowance with no log or receipts is generally wages. It can stay tax-free only if the employee substantiates the expenses and returns any excess. I’ve seen this trip up owners who pay a flat car allowance that nobody ever tied to a mileage log.

What receipts and records do employees need?

Employees generally need receipts or paid bills for lodging while traveling away from home and for any other expense of $75 or more. Transportation charges are the exception when a receipt isn’t readily available. For smaller costs, a written record shows the amount, time, place, and business purpose.

Without proper documentation, a payment generally can’t pass the proof rule, and it can turn into wages. Ask employees to submit receipts with every reimbursement request, and keep that supporting documentation with your books. Our guide to payroll record-keeping rules explains how long to hold records.

How does mileage reimbursement work in 2026?

The IRS business mileage rate changed mid-2026. It is 72.5 cents per mile for driving from January 1 to June 30. From July 1 to December 31, it is 76 cents per mile. Mileage reimbursement at or below the rate stays tax-free with a log.

The date of the drive decides the rate, not the date you pay. That means a June 28 trip earns 72.5 cents per mile even if you reimburse it in August. The IRS tied the July increase to recent fuel prices. You can confirm both figures on the IRS standard mileage rates page.

• You can pay less than the IRS rate, since the rate is a ceiling for tax-free treatment, not a requirement.
• If you pay more than the rate without proof of actual costs, the extra generally counts as wages.
• The rate covers business use of a personal vehicle, so the employee still logs miles, dates, destinations and purpose.
• The IRS has not posted a 2027 rate yet, and it usually announces the new rate in late December.

Illustrative example: 340 miles paid two ways

An employee on a 22-person landscaping crew (illustrative) drives 340 miles for site visits in September 2026. At 76 cents per mile, the reimbursement comes to $258.40.

Paid as wages, the employee takes home about $76.62 less, and you pay about $19.77 more. The math assumes the 22% flat supplemental method and leaves out state taxes and FUTA. Had the same drive happened in June, the amount would be $246.50, and about $173.41 would reach the employee as wages.

How do per diem rates work for business travel?

Per diem is a fixed daily allowance for lodging and meals on a business trip. For overnight business travel, private employers can generally use the federal per diem rate as the amount the IRS treats as proven. The employee still documents the time, place, and business purpose of the travel.

The standard rate applies to places without their own local rate, and many cities have higher ones. Under IRS Revenue Procedure 2019-48, the tax-free part of your travel expenses is the lower of what you pay or the federal rate. If your allowance runs higher and the employee doesn’t have to give back the extra, that excess reimbursement counts as wages.

Can tools or uniforms push pay below minimum wage?

No. Under the FLSA, the cost of tools or uniforms you require can’t cut into the minimum wage or overtime you owe an hourly employee. That limit applies whether you take a payroll deduction or ask the employee to pay you back in cash.

The Department of Labor’s Fact Sheet 16 gives a simple example. Take an employee earning $7.75 an hour who works 30 hours in a week. Since the federal minimum is $7.25, the uniform cost can’t go above $15 that week. In the accounts I’ve worked on, owners tend to miss this check in short, part-time weeks.

• Run the test every workweek, because a violation happens in any week the cost cuts into minimum or overtime wages.
• When an employee incurs a tool cost in an overtime week, check it against your overtime rules as well.
• State minimum wage laws can set a higher floor, such as California’s $16.90 an hour in 2026.

Which states require employers to reimburse expenses?

California is the clearest example. Labor Code 2802 requires employers to cover all necessary expenditures or losses an employee incurs in direct consequence of doing the job. Some other states have their own reimbursement rules, so check with your state labor agency before you write a policy.

California’s rule carries added costs. Unpaid amounts carry interest from the date the employee paid. An employee who sues can also recover reasonable attorney’s fees. So a policy that passes the federal tax rules can still fall short in California.

How to build an employee expense reimbursement policy

Write down what you pay for, how employees ask for money back, and by when. A short written policy that follows the three IRS rules keeps payments tax-free and gives everyone one process. It should also set spending limits by expense category and name who approves.

My advice is to hand every new hire the policy on day one. Put it on your employee onboarding checklist so nobody skips it. Then add it to your yearly payroll compliance checklist review, since mileage and per diem rates change.

Copy-ready reimbursement policy template

Copy this into your handbook and fill in the brackets. Have your accountant or attorney review it before use, especially in California.

1. Purpose. [Company name] repays employees for approved business expenses they pay with personal money for business purposes.
2. Covered costs. Employees can claim expenses for business travel, mileage in a personal vehicle, and supplies or tools the company requires.
3. Not covered. Nonreimbursable expenses include personal purchases, traffic fines, and anything without a business purpose.
4. Spending limits. Purchases over [$ amount] need approval from [manager title] before anyone spends.
5. Mileage. For driving expenses, the company pays [rate, up to the IRS business rate] per mile with a log of date, destination, miles, and purpose.
6. Travel. Travel expenses for lodging and meals follow [actual receipts or the federal per diem rate] for the trip location.
7. Receipts. Required documentation means receipts for lodging when the employee claims actual costs and for any expense of $75 or more. Per diem trips need the time, place, and business purpose only.
8. Smaller items. For expenses under $75, employees record the amount, date, place, and business purpose.
9. Deadline. The employee submits expense reports within 60 days of paying or incurring each expense.
10. Advances. Employees return any unspent advance within 120 days, or the company runs it through payroll as wages.
11. Payment. The company pays approved expenses by [bank transfer or separate reimbursement check] within [number] days.
12. Review. [Owner or manager] reviews this policy each January and whenever the IRS changes the mileage rate.

If you already pay wages by direct deposit, you can usually send reimbursements to the same bank account. Keep them out of the payroll run unless they have become wages. Record approved reimbursements as a business expense and keep the receipts with your books.

How FRIDAY fits into your reimbursement process

FRIDAY does not manage expense reports. If a payment fails the IRS plan rules, it counts as wages, and you run it through payroll like any other pay. FRIDAY runs withholding, tax filing, and direct deposit for your regular payrolls.

Accurate hours matter too, because the tool and uniform test runs week by week. FRIDAY tracks time with GPS geofencing and syncs payroll to QuickBooks Online and Desktop, so your hours and books line up. The Startup plan, the first plan with payroll, costs $59 a month plus $12 per user. You can try it with a 14-day free trial, with no setup or cancellation fees.

Frequently asked questions

Are expense reimbursements taxable?

Not when you pay them under a plan that meets the IRS rules for receipts and returning extra money. If the plan skips those rules, it is a nonaccountable plan, and the payment counts as wages. Wages carry income tax withholding plus Social Security, Medicare, and FUTA.

What is the 2026 mileage rate for reimbursement?

The IRS business rate is 72.5 cents per mile for driving from January 1 to June 30, 2026. It is 76 cents per mile for driving from July 1 to December 31, 2026. Use the rate that matches the date of the drive, not the date you pay.

How much can I reimburse without receipts?

Employees generally need receipts or paid bills for lodging while traveling away from home and for any other expense of $75 or more. Transportation charges are the exception when a receipt isn’t readily available. Below $75, a written record of the amount, time, place, and business purpose is enough.

Must I reimburse tools or uniforms that push pay below minimum wage?

Yes, when the cost would cut into minimum wage or overtime for that workweek. Under the FLSA, required tools or uniforms can’t push pay below that floor, so the employer covers the difference.

Do employers have to reimburse employees for business expenses?

Federal law has no general rule requiring it, except when required costs cut into minimum wage or overtime. California Labor Code 2802 requires it, and some other states have their own rules, so check your state labor agency.

Disclaimer: This article is for general informational purposes only and does not constitute legal, tax, or financial advice. Consult a licensed professional for guidance specific to your situation. Rates and rules are current as of October 28, 2026.

Pincus Schiff

Pincus Schiff is a payroll software specialist at Friday App, where he helps businesses simplify payroll, stay compliant, and automate their workflows. He writes about payroll best practices, compliance, and the latest in workforce technology.