An expense reimbursement form documents business expenses employees paid out of pocket. To keep reimbursements tax-free, your company must follow IRS accountable plan rules: business connection, substantiation within 60 days, and return of excess within 120 days.
- 2026 IRS mileage rate: $0.70 per mile
- Receipts required for expenses of $75 or more
- Accountable plan reimbursements are not taxable income
IRS Accountable Plan Rules
The IRS defines an accountable plan as a reimbursement arrangement meeting three requirements:
Business Connection
Adequate Substantiation (60 Days)
Return Excess (120 Days)
If your reimbursement plan does not meet all three requirements, it is a non-accountable plan. Reimbursements under a non-accountable plan are treated as taxable wages and must be included on the employee's W-2, subject to income tax and FICA withholding.
Eligible Expenses
| Category | Examples | Notes |
|---|---|---|
| Travel | Airfare, hotel, rental car, parking | Must be away from tax home overnight |
| Meals | Business meals with clients/colleagues | Company decides reimbursement amount |
| Mileage | Business use of personal vehicle | $0.70/mile in 2026 |
| Office Supplies | Paper, ink, shipping | When not provided by employer |
| Technology | Software subscriptions, equipment | Must be business-related |
| Professional Development | Conferences, courses, books | Related to employee's role |
Receipt Requirements
Under IRS rules, receipts are required for expenses of $75 or more (with the exception of lodging, which always requires a receipt regardless of amount). Each receipt or record must include:
The IRS accepts digital copies of receipts (photos, scans, email confirmations). Encourage employees to photograph receipts immediately — thermal paper receipts fade quickly. Store digital copies securely for the required retention period.
2026 Mileage Rates
| Purpose | 2026 Rate | 2025 Rate |
|---|---|---|
| Business miles | $0.70/mile | $0.70/mile |
| Medical/moving (active military) | $0.21/mile | $0.21/mile |
| Charitable miles | $0.14/mile | $0.14/mile |
The business mileage rate covers all vehicle operating costs: gas, oil, insurance, depreciation, tires, and maintenance. Employees who claim the standard mileage rate cannot also deduct actual vehicle expenses.
Reimbursement Process
Employee Submits Expense Report
Manager Approves
Finance/Payroll Processes
Records Retained
Frequently Asked Questions
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