What Is Per Diem? (2026)
Per diem is Latin for "per day," and in trucking it means a daily allowance for meals and incidentals on the road. For an owner-operator it is one of the largest legitimate deductions in the business: instead of saving burger receipts, you count your nights away from home and deduct a fixed rate for each. Drivers subject to DOT hours-of-service rules get a special version of the deal — a higher standard rate and an 80% deduction instead of the 50% most business travelers accept. For travel from October 1, 2025 through September 30, 2026, the special transportation-industry meal rate is $80 per day in the continental US ($86 outside it), per IRS Notice 2025-54. This page defines the term, works the math, and covers the record-keeping that survives an audit. To run your own numbers, see the per diem calculator.
By the HaulMath editorial team · Updated $1
Key numbers at a glance
| Nights away per year | Allowance at $80/day | 80% deduction | Tax saved at 22% | Tax saved at 24% |
|---|---|---|---|---|
| 100 | $8,000 | $6,400 | $1,408 | $1,536 |
| 150 | $12,000 | $9,600 | $2,112 | $2,304 |
| 200 | $16,000 | $12,800 | $2,816 | $3,072 |
| 220 | $17,600 | $14,080 | $3,098 | $3,379 |
What Per Diem means
Definition: per diem is a standardized daily amount covering meals and incidental expenses (M&IE) while traveling for work, used in lieu of actual receipts. The tax version rests on IRS Publication 463: most industries deduct 50% of the federal rate, but workers in the transportation industry who are subject to DOT hours-of-service limits — interstate truckers — deduct 80% of a special M&IE rate. The eligibility trigger is the night: you must be away from your tax home long enough to need sleep or rest. Day trips do not qualify no matter how long the day runs, and your tax home is your regular post of duty, not necessarily where your mailbox is.
The rates are set annually by IRS notice and split by geography: a single rate for any locality in the continental United States, and a slightly higher one outside it. Recent notices have held the transportation rates steady at $80/$86 — but the number is re-set every year, so verify the current notice (or ask your CPA) before you file. The deduction belongs to whoever bears the meal cost: owner-operators claim it directly on their business return; company drivers who receive per diem as extra nontaxable pay from a carrier are in a different situation and must not also deduct the same days.
How Per Diem affects your numbers
A worked example, full-time OTR. You count 220 nights away this year. Allowance: 220 × $80 = $17,600 of deemed meal and incidental expense. Deduction: 80% × $17,600 = $14,080. At a 22% marginal bracket that is about $3,098 of tax not paid; at 24%, about $3,379. The formula in one line: days × rate × 0.80 = deduction, and deduction × bracket = cash. The only variable you control is counting the days honestly — which is why ELD records, which log your nights automatically, are worth real money at tax time.
How the deduction scales with days counted, at $80/day, 80%, 22% bracket:
| Nights away per year | Allowance at $80/day | 80% deduction | Tax saved at 22% | Tax saved at 24% |
|---|---|---|---|---|
| 100 | $8,000 | $6,400 | $1,408 | $1,536 |
| 150 | $12,000 | $9,600 | $2,112 | $2,304 |
| 200 | $16,000 | $12,800 | $2,816 | $3,072 |
| 220 | $17,600 | $14,080 | $3,098 | $3,379 |
| 250 | $20,000 | $16,000 | $3,520 | $3,840 |
Two observations from the table. First, the gap between counting 200 days and 220 days is $282-$306 of cash — a pure paperwork return on keeping a trip calendar current. Second, the deduction is a discount on tax, not a rebate on spending: you keep the $14,080 deduction whether your road meals cost $14,080 or $6,000, which is exactly why the standard rate exists and why auditing it centers on the day count, not the dinner receipts. As deductions go it is second in size for many owner-operators only to the truck itself — see the complete trucking deductions list for where it fits.
Common mistakes
Guessing the day count. "About 200 days" is the classic audit adjustment. ELD records, settlements and a one-page trip calendar make the number provable in minutes.
Claiming home nights. The rule is overnight away with sleep or rest. Counting days you slept in your own bed converts a good deduction into a bad filing.
Double-dipping. An owner-operator deducts; a company driver may receive per diem pay. Claiming the deduction for days a carrier already paid you per diem on is the fastest way to meet an examiner.
Using last year's rate. The special M&IE rate is re-set by IRS notice each year. File on the current notice's number, and keep the three-year records to match.
When it matters most
Per diem matters most for full-time OTR operators — the more nights out, the bigger the deduction — and at year-end, when the counting has to be reconstructed before the return is prepared. It matters at planning level too: $3,000-plus of tax savings is a real line in next year's budget, and operators who track nights quarterly rather than reconstructing December from memory capture all of it. The habit costs ten minutes a quarter: nights away into a calendar, ELD exports saved, settlements filed. Verify current-year rates with the IRS or your CPA, run your count through the per diem calculator, and start from the HaulMath home page for the rest of the system.
FAQ
What is per diem for truckers?
A per-day allowance for meals and incidentals on nights you are away from your tax home. Under the special transportation-worker rule, eligible drivers deduct 80% of the federal M&IE rate instead of keeping meal receipts — for travel from October 1, 2025 through September 30, 2026, the special rate is $80/day in the continental US, per IRS Notice 2025-54.
How is the trucker per diem deduction calculated?
Days away overnight × special M&IE rate = allowance; the deduction is 80% of that. Example: 220 days × $80 = $17,600 allowed, 80% = $14,080 deduction. The tax saved is the deduction times your marginal bracket.
Who qualifies for the 80% transportation-worker rule?
Workers subject to DOT hours-of-service limits who travel away from their tax home and need sleep or rest — which covers interstate truckers. The requirement is overnight: sleeping or resting on the road, not just a long day trip.
Can I claim per diem if I am home every night?
No. Per diem requires being away from your tax home overnight with sleep or rest on the road. A 14-hour day that ends in your own driveway is a long day, not a deductible one.
Do I need meal receipts for per diem?
No — the standard rate replaces receipts. What the IRS expects instead is proof of the days: ELD records, settlements and a trip calendar showing nights away, kept for at least three years after filing.
Is company-driver per diem the same as the owner-operator deduction?
No. Company drivers have generally received per diem as a payment from the carrier — nontaxable wages up to the limit — while owner-operators claim it as a deduction on their return. Same rate logic, opposite directions, and never claim a deduction for days your carrier already paid you per diem on.