Per diem comes up often when truck drivers talk about taxes, especially among owner-operators and other self-employed drivers who spend nights away from home. The IRS rules are narrower than simply counting the number of days spent on the road.

Transportation workers who qualify can use a special standard meal allowance instead of tracking the cost of every meal. The current rate is $80 per day for travel within the continental United States and $86 per day outside the continental United States. Interstate truck operators subject to Department of Transportation hours-of-service limits can generally deduct 80% of the qualifying amount.

When a Truck Driver Qualifies for Per Diem

The first requirement is traveling away from your tax home for business. Under IRS rules, that generally means your work requires you to be away from the area of your tax home substantially longer than an ordinary workday and you need sleep or rest to continue working.

A long workday by itself does not qualify. The IRS gives the example of a truck driver who leaves a terminal, returns later the same day and stops for an hour to eat along the way. Because the stop is not long enough for necessary sleep or rest, the driver is not considered to be traveling away from home.

Your Tax Home May Not Be Where You Live

One of the more important parts of the per diem rules is the IRS definition of a tax home. It is generally your regular place of business or main post of duty, which may be different from your personal residence.

This can become complicated for drivers without one regular work location. The IRS considers factors such as where a person conducts business, whether maintaining a home creates duplicate living expenses while traveling for work and whether the person regularly returns to that home.

A driver considered itinerant has no tax home for travel-expense purposes. Because an itinerant is considered to be at home wherever they work, travel meal deductions based on being away from a tax home are not available.

The Transportation Worker Rate

Truck drivers who meet the IRS definition of a transportation worker can use the special transportation-industry meal allowance. To qualify, the work must directly involve moving people or goods and regularly require travel away from home, with trips usually taking the worker through areas that could have different standard meal allowance rates.

The special rate avoids having to look up a different meal allowance for every qualifying location along a trip. Drivers who choose the transportation-worker rate for one trip must use that method for their qualifying trips throughout the year rather than switching between the special rate and regular locality rates.

The 80% Deduction

Business meals are normally subject to a 50% deduction limit. Interstate truck operators subject to DOT hours-of-service limits receive different treatment and can generally deduct 80% of qualifying meal expenses incurred during or incident to periods covered by those limits.

The 80% applies to the qualifying meal amount, not on top of it. Using an $80 full-day allowance as an example, the deductible portion would generally be $64.

Departure and return days also require attention. The standard meal allowance normally has to be prorated on partial travel days, and the IRS provides more than one acceptable method for doing so as long as the method used meets its requirements.

Per Diem Does Not Eliminate Travel Records

Using the standard meal allowance means a driver does not have to substantiate the actual cost of each meal used to calculate the deduction. It does not remove the requirement to establish that the business travel itself qualified.

Records should support the dates, destination and business purpose of the travel. This distinction matters because the allowance is a method for calculating qualifying meal expenses, not an automatic deduction for every day spent working in a truck.

Company Drivers and Self-Employed Drivers

Employment status can change whether an individual driver can claim these expenses on a federal return. Self-employed drivers can generally deduct qualifying business travel expenses through Schedule C, subject to the applicable IRS rules and limitations.

Company drivers should not assume the same deduction is available simply because their employer refers to part of their compensation as per diem. Employer reimbursement arrangements and an individual’s ability to claim an unreimbursed expense are separate tax issues, so the way a carrier structures its per diem program matters.

Frequently Asked Questions

Are departure and return days counted at the full per diem rate?

Usually not. The IRS requires the standard meal allowance to be prorated for partial travel days. One permitted method uses 75% of the daily allowance for departure and return days, although another consistent method that follows reasonable business practice may also be used.

Do truck drivers need meal receipts when using the standard meal allowance?

The standard meal allowance is designed to substantiate the amount spent on meals without using the actual cost of each meal. Drivers still need records that establish the qualifying business travel, including information such as when and where the trip occurred and its business purpose.

Can a driver use the special transportation rate for one trip and regular city rates for another?

Not during the same year. Once a qualifying transportation worker chooses the special transportation-industry rate for a trip, the IRS requires that rate to be used for all qualifying trips during that year.

What happens if a truck driver does not have a tax home?

A driver classified as an itinerant is considered to have a tax home wherever they work. Because there is no location they are traveling away from for tax purposes, they generally cannot claim travel expenses based on being away from home.

The TDUSA editorial team creates practical, driver focused content covering trucking news, industry updates, safety, regulations, and career information for professional truck drivers across the United States. Each article is built to reflect real world experience, industry developments, and information drivers can use on and off the road.

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