Can Per Diem Funds Be Taxed?

by Tara Thomas ; Updated March 15, 2018

Employers often provide allowances for the costs associated with employee business travel. Known as per diem, meaning each day, these travel costs include meals and incidentals as well as lodging. Depending upon where you're traveling, the rates of per diem are set annually by the General Services Administration (GSA), the Department of Defense or the State Department, and each city has its own per diem rates you’re allowed to receive. The IRS also has a flat rate for high-cost locations, and a lower flat rate for less costly areas, if your employer chooses not to use the per diem set by the GSA.

What Is Included in My Per Diem?

Your per diem rate includes meals and incidental expenses, also known as M&IE, you incur during your travels. M&IE covers your meals, room service, laundry services such as dry cleaning, and incidental expenses for services provided such as tips for wait staff or luggage porters. Also included in your per diem are your lodging expenses. Eligible lodging includes accommodations for overnight stays at hotels, resorts, inns or longer-term accommodations like renting an apartment.

Why Does the Per Diem Rate Vary?

Because per diem varies depending upon a particular area’s cost of living, check with your employer or visit the General Services Administration’s website to find out what you can expect to receive in per diem for the city you’re visiting. Large, metropolitan cities have a higher per diem than smaller or more remote locations. The lodging portion of your per diem not only varies by location, but also by time of year.

Per diem takes into account that cities often have on and off seasons. Lodging allowances will be greater in months when an area sees more tourists or business travelers, and available rooms are costlier. Recently, the IRS released new per diem guidelines effective October 1, 2017 as well as adding new cities to the high-cost localities that qualify for a higher per diem. Be sure to read IRS Notice 2017-54, 2017 – 2018 Special Per Diem Rates, for more information regarding recent per diem adjustments.

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Taxing Per Diem

Generally, per diem funds, or day rate, are non-taxable because they are not considered wages. However, if your per diem exceeds the daily federal allowable rate, or you didn’t file an expense report with your employer, then your per diem could be taxed as income. If you do find your per diem taxed, it will be subject to payroll deductions and federal income tax withholding. Your employer will report this information on your W2, and if your per diem was taxed because it exceeded the federal daily amount, then you will only be taxed on the amount that exceeded the federal standard rate.

The Importance of Record-Keeping and Expense Reports

Keeping meticulous records of your business expenses makes the whole process of reporting your costs to your employer that much easier. In a log book, keep track of the purpose of the trip, date and location and any receipts for lodging – if using the meals-only per diem rate. You must report these costs to your employer within 60 days of the trip. Failing to meet these requirements may render your per diem taxable.

About the Author

Tara Thomas has been a writer and traveler since 1997. Her articles appear in various online publications. She also has experience authoring grant proposals for a Southern California marine science laboratory, which helped her develop a lifelong interest in environmentalism. Thomas is an event planner, has a Bachelor of Science in marine biology from California State University, Long Beach, and worked as a mortgage consultant since 1998.

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