Per Diem vs Actual Expenses: Which Should Your Business Use?

Per diem substantiates the amount of a travel expense with a fixed daily government rate, so meal receipts are unnecessary. Actual expenses substantiate the amount with receipts and records. Per diem wins on paperwork and when you eat cheaply; actual expenses win when real costs run above the rate. The catch that decides it for most small businesses: there is no lodging per diem for anyone deducting their own travel, so hotel receipts are required either way.

What is the difference between per diem and actual expenses?

Both are substantiation methods, not deduction rules. Under Section 274(d) you must prove four things about a travel expense: the amount, the time, the place, and the business purpose. The actual-expense method proves the amount with a receipt or paid bill. The per diem method deems the amount substantiated up to the federal rate for that locality, so you never have to prove what you actually spent on meals.

Per diem does not excuse the rest. Revenue Procedure 2019-48 is explicit that time, place, and business purpose still have to be substantiated with a log or trip record. The rate replaces the receipt, not the diary.

Does per diem cover lodging or just meals?

The federal per diem has two components. The General Services Administration publishes a lodging rate and a meals and incidental expenses rate, known as M&IE, for every locality by federal fiscal year. For FY2026, which runs October 1, 2025 through September 30, 2026, the standard CONUS rate is $110 per night for lodging and $68 per day for M&IE, or $178 combined. GSA held the FY2026 rates flat against FY2025.

An employer reimbursing an employee can pay both components. A self-employed person deducting their own travel cannot. Publication 463 says it plainly: there is no optional standard lodging amount similar to the standard meal allowance, and your allowable lodging deduction is your actual cost. So a sole proprietor uses the M&IE per diem for meals and a hotel receipt for the room.

Can a self-employed person use per diem for lodging?

No. The standard meal allowance is available whether you are an employee or self-employed, but there is no equivalent lodging allowance for a taxpayer deducting their own travel. Lodging is deducted at actual cost, and a receipt is required for lodging at any dollar amount, not just at $75 and above. That single rule is why the per diem question, for most owner-operators, is really just a question about meals.

What are the 2026 per diem rates?

There are two ways to look them up. The full GSA locality tables give a specific rate for each city and county. The IRS high-low substantiation method collapses all of CONUS into two rates, which is far easier to administer. The high-low figures below come from IRS Notice 2025-54, effective October 1, 2025.

If you pick the transportation industry rate, you must use it for every trip that year. And an employer that did not use the high-low method during the first nine months of a calendar year cannot switch to it mid-year.

Do I need receipts for per diem?

Not for the meals covered by the rate. You still need a record of where you went, when, and why. And you still need a lodging receipt if you are deducting lodging at actual cost, which every self-employed traveler is. For anything outside the per diem, such as airfare, a rental car, baggage fees, or a client meal you want to deduct separately, the ordinary rules apply: documentary evidence for lodging at any amount and for any other expenditure of $75 or more, per Regulation 1.274-5(c).

That $75 line trips people up. It is not a deduction threshold. It is a receipt threshold. Under $75 you still have to record the amount, time, place, and business purpose, you just do not have to produce the slip. In practice, keeping the slip is easier than reconstructing a diary entry two years later, and digital copies have counted since Revenue Procedure 97-22. Running the pile through a receipt scanner for taxes makes that a one-minute habit rather than a filing project.

Is per diem taxable income to the employee?

Not if it is paid under an accountable plan and does not exceed the federal rate. The amount deemed substantiated for each day is the lesser of the allowance paid or the federal per diem for that locality. Anything paid above the federal rate, and not returned or separately substantiated, is treated as paid under a nonaccountable plan and becomes taxable wages reported on the W-2 and subject to withholding.

There is an important exclusion for closely held businesses. Publication 463 says the per diem satisfies adequate accounting only if, among other conditions, you are not related to your employer. Related includes owning, directly or indirectly, more than 10 percent in value of the corporation's outstanding stock. A shareholder-employee above that line must be able to prove actual expenses to the IRS even after accounting to the company. If you own your S corp, plan on actual expenses. The rest of the mechanics live in our guide to accountable plan rules.

Are per diem meals subject to the 50% limit?

Yes. The meal portion of a per diem is still food and beverage expense, so Section 274(n) cuts the deduction to 50 percent. Two exceptions matter. Workers subject to the Department of Transportation hours-of-service limits deduct 80 percent of their business-related meal costs, which is why long-haul drivers care about the $80 transportation rate. And the incidental-expenses-only rate of $5 a day is not subject to the 50 percent limit at all, because it is not a meal.

The temporary 100 percent deduction for restaurant meals applied to 2021 and 2022 only. It is gone. Entertainment has been fully nondeductible since the Tax Cuts and Jobs Act, so a ticket to a game is not rescued by calling it a meal.

How do partial travel days work?

You do not claim a full day's M&IE for the day you leave and the day you get back. Publication 463's simplest approach is to claim 75 percent of the standard M&IE rate for each of those two days. A second method allows any reasonable proration, applied consistently. Federal travelers use the same three-quarters convention.

None of this applies unless you were actually traveling away from home. The test has two parts: your duties require you to be away from the general area of your tax home substantially longer than an ordinary day's work, and you need to sleep or rest to meet the demands of the work. A long day trip with no overnight stop is not travel. You can still deduct the mileage, at the 2026 standard rate of 72.5 cents per mile under Notice 2026-10, but not meals or lodging.

Is per diem better than the actual expense method?

It depends on how you eat and how much administrative pain you are willing to carry. Here is the honest comparison.

A road-warrior salesperson who grabs a $9 breakfast and a $14 dinner in a $68 M&IE city deducts $68 a day on per diem and about $23 on actuals. A consultant taking clients to dinner in Manhattan clears the $86 high-cost M&IE portion by lunchtime and should track actuals. You cannot mix the two within a single trip, so pick a method per trip and stay with it.

How much per diem can I claim without receipts?

Up to the federal rate for the locality and the day, which for FY2026 means $68 of standard M&IE, $74 or $86 under the high-low method, or $80 for transportation workers. Claim more than that and you are back to substantiating the actual amount. The 50 percent meal limit still applies to whatever you claim, so the deduction on a $68 M&IE day is $34.

Which should your business use?

Employers with traveling staff usually land on per diem, because the M&IE rate removes the receipt collection that never happens anyway, and the high-low method removes the locality lookup. Self-employed owners usually land on a hybrid: M&IE per diem for meals, actual receipted cost for lodging, airfare, cars, and everything else. S corporation owners past the 10 percent line land on actual expenses, because the shortcut is closed to them.

Whichever you choose, the actual-expense side never goes away entirely, and it is where the work is. Hotel folios, airline receipts, rental car agreements, and the parking and baggage charges that fall under $75 still have to be captured, categorized, and totaled. If you photograph each one and run the batch through a business expense tracker, the merchant, date, category, and total come back as spreadsheet rows and your travel file assembles itself. From there the trip totals slot into expense report software or straight into your ledger, and reconciling them against the corporate card is quick once you convert the card statement into a spreadsheet and match on amount and date.

For what qualifies before you start substantiating it, see our guides on business travel expense deductions and the business meals deduction. Drivers who live under the hours-of-service rules should also read tax deductions for truck drivers, where the 80 percent meal rule and the transportation per diem do most of the work.

This article explains general federal tax rules as of July 2026 and is not tax advice. Per diem rates change each federal fiscal year. Confirm current rates on gsa.gov and your own situation with a CPA.