Per diem on taxes is the IRS-approved daily allowance for lodging, meals, and incidental expenses incurred while traveling for business. It allows employees and self-employed individuals to claim tax-deductible reimbursements without submitting detailed receipts.
The IRS sets per diem rates annually based on location and travel purpose. These rates are standardized and do not require itemized proof of spending. For domestic travel within the U.S., the standard rate is $64 per day for most areas, with higher amounts in major metropolitan regions like New York City ($90) and San Francisco ($95).
Employers may offer per diem payments to cover travel costs. If the payment meets IRS guidelines, it's not counted as taxable income. Employees who receive a per diem must report it on their tax return if it exceeds actual expenses. Self-employed individuals can deduct per diem amounts for business travel under IRC §162.
Per diem on taxes functions as a simplified method for tracking travel-related expenses. Instead of documenting every meal, hotel charge, or taxi fare, taxpayers use a flat daily rate set by the IRS. This reduces recordkeeping burden and streamlines tax filing.
For example, a consultant travels to Chicago for three days of client meetings. The IRS rate for Chicago is $70 per day. The consultant receives a $70 per diem from their employer. Since the amount matches the IRS standard, it is not included in taxable income. The employee reports the $210 total as a non-taxable reimbursement on Form 1040.
If the employee spends less than the per diem rate, they still report the full amount received. If they spend more, they must document the excess and claim the actual cost as a deduction. However, if the employer reimburses more than the IRS rate, the excess is taxable income.
There are two primary categories of per diem on taxes: official government rates and private sector arrangements.
| Type | Who Sets It | Rate Basis | Use Case |
|---|---|---|---|
| IRS Standard Rate | Internal Revenue Service | Geographic zones, updated annually | Employees and contractors claiming deductions |
| Government-Approved Rate | General Services Administration (GSA) | Same as IRS, but includes foreign locations | Federal employees on official travel |
For international travel, the GSA sets rates based on country-specific allowances. In Tokyo, the per diem rate is $137 per day; in Paris, it's $124. These rates apply to federal employees and contractors working abroad.
Private companies often adopt the IRS standard rate for employee reimbursements. A tech firm based in Austin sends a software engineer to Seattle for a week-long training. The company uses the IRS rate of $83 per day for Seattle. The engineer receives $581 ($83 × 7 days) and reports it as non-taxable income. No receipts are required.
Many assume per diem on taxes applies only to high-level executives or frequent travelers. In reality, it's available to anyone on business travel, including freelancers, consultants, and field technicians.
A common error is confusing per diem with meal and entertainment (M&E) deductions. M&E deductions require detailed records and are subject to a 50% limit. Per diem avoids this restriction because it's a flat rate. For example, a sales rep spends $100 on meals in Boston. Under M&E rules, only $50 is deductible. But using the $70 per diem rate, the full $70 is deductible without itemization.
Another misunderstanding is that per diem must be paid in cash. The IRS allows electronic transfers, direct deposit, or credit card reimbursement. As long as the payment aligns with the IRS rate and is documented, it qualifies.
One non-obvious rule: per diem is not refundable. If an employee returns early from a trip, they cannot keep the unused portion. The employer must adjust the payment or request repayment. The IRS considers unspent per diem as taxable income if not returned.
Consider a mechanical engineer employed by a manufacturing firm. She travels to Detroit for three days to inspect a production line. Her employer provides a per diem of $83 per day, matching the IRS rate for Detroit.
She stays in a budget hotel and eats meals at local restaurants. She spends $200 total over three days. The IRS allows a $249 per diem ($83 × 3). She receives $249 from her employer. Because the amount equals the standard rate, she reports it as non-taxable income.
On her tax return, she files Form 2106 to claim unreimbursed employee expenses. She enters $249 under "Meals and Incidental Expenses" and checks the box indicating "per diem." No receipts are needed. The IRS accepts the standard rate as sufficient proof.
Had she spent $300, she would have had to submit receipts for the extra $51. But since she stayed under the per diem threshold, the entire amount is deductible without documentation.
Per diem on taxes differs from actual expense reporting in three ways:
For instance, a freelance photographer travels to Miami for a photo shoot. The IRS rate is $83 per day. He spends $120 per day on meals and lodging. Using per diem, he claims $83 per day as a deduction. If he used actual expenses, he'd need to track each purchase and could only deduct $120 if he submitted receipts.
Per diem simplifies reporting and reduces audit risk. The IRS states that "employees who receive per diem allowances equal to or less than the prescribed rates are not required to substantiate expenses" (IRS Publication 463, 2023).
Per diem on taxes remains a practical tool for managing business travel costs. It balances simplicity with compliance, offering a clear path for deduction without overwhelming recordkeeping. Always verify current IRS rates before claiming a per diem deduction.