Per Diem Deductions: How Much You Can Write Off

What Is the Per Diem Deduction?

The per diem deduction allows truck drivers to write off a daily allowance for meals and incidental expenses (M&IE) incurred while traveling away from their tax home overnight. Instead of tracking every meal receipt, you claim a flat daily rate set by the IRS based on General Services Administration (GSA) per diem tables. For the 2026 tax year, the standard per diem rate for the continental United States (CONUS) is $69/day, and $74/day for travel outside the continental US (OCONUS — Alaska and Hawaii).

This is not a theoretical tax concept — it is one of the largest single deductions available to truck drivers. A long-haul owner-operator away from home 280 days per year can deduct $15,456 annually using per diem (280 x $69 x 80%), which translates to $5,000–$6,000 in real tax savings depending on your bracket. Company drivers who receive W-2 income lost the ability to deduct per diem as an unreimbursed employee expense when the Tax Cuts and Jobs Act of 2017 suspended miscellaneous itemized deductions through 2025. However, as of 2026, this provision is set to expire — check IRS guidance for the current status of the TCJA provisions.

Owner-operators filing Schedule C have never lost access to per diem. You claim it as a business expense that reduces your self-employment income, lowering both your income tax and your self-employment tax (15.3% on net earnings). The dual tax reduction is what makes per diem so powerful for 1099 truckers.

Per diem covers meals and incidental expenses only. It does not cover lodging (hotels), fuel, or truck-related expenses. Incidental expenses include tips for meal service, laundry, and other small travel-related costs. If you sleep in your truck (as most OTR drivers do), you do not have separate lodging expenses to deduct — per diem captures your daily living costs on the road.

Eligibility: Who Qualifies?

Not every truck driver qualifies for the per diem deduction. The IRS has specific rules about who is eligible, and getting these wrong can trigger an audit or disallowed deductions.

You must be a transportation worker subject to DOT hours-of-service regulations. This includes CDL holders operating commercial motor vehicles subject to 49 CFR Part 395. Most truck drivers meet this requirement, but local drivers who return home every night do not qualify because they are not traveling overnight.

You must be away from your tax home overnight. Your tax home is generally the city or area where your principal place of business is located — for most owner-operators, this is where their truck is based and where they do their administrative work. If you are an OTR driver based in Dallas and you are running loads between Atlanta and Chicago, you are away from your tax home. If you are a local P&D driver in Dallas who goes home every night, you are not away from your tax home and cannot claim per diem.

The "overnight" requirement is key. The IRS defines qualifying travel as trips that require you to sleep or rest to meet the demands of your work while away from home. Sleeping in your truck cab absolutely qualifies. You do not need to stay in a hotel. A day trip, even if it is 14 hours long, does not qualify if you return home that night.

Partial days count. On the day you leave home and the day you return, you can claim 75% of the per diem rate ($51.75 for CONUS travel). Every full day in between is 100% ($69). Some tax preparers use a simpler method of counting any day you are away from home with an overnight stay as a full day — the IRS accepts this approach as long as you are consistent.

Leased owner-operators working under a carrier's authority qualify if they file taxes as independent contractors (1099). If your carrier pays you a per diem allowance that appears as non-taxable on your settlement, you cannot also claim the IRS per diem deduction for those same days — that would be double-dipping.

How to Calculate Your Per Diem Deduction

The calculation is straightforward once you have your day count. Here is the step-by-step process with a real example.

Step 1: Count your qualifying days. Review your ELD logs, trip records, or personal calendar to count every day you were away from your tax home overnight during the tax year. Be precise — the IRS can request documentation. Example: John, an OTR dry van operator based in Memphis, was on the road 275 full days and had 48 partial days (departure and return days) during 2026.

Step 2: Calculate gross per diem. Full days: 275 x $69 = $18,975. Partial days: 48 x $51.75 (75% of $69) = $2,484. Total gross per diem: $21,459.

Step 3: Apply the 80% deductibility rate. Transportation workers subject to DOT hours-of-service rules can deduct 80% of meal expenses, compared to 50% for other taxpayers. This special rate is codified in IRC Section 274(n)(3). John's deductible amount: $21,459 x 80% = $17,167.

Step 4: Report on Schedule C. The per diem deduction goes on Schedule C, Line 24b (Meals — subject to limitation). Your tax software or CPA should apply the 80% rate automatically when you indicate you are a DOT-regulated transportation worker. If using tax software, look for the checkbox or question about DOT hours-of-service — missing this box means the software applies the 50% rate instead, costing you thousands.

Step 5: Calculate tax savings. John's net self-employment income before per diem is $72,000. After the $17,167 per diem deduction, his taxable self-employment income drops to $54,833. At the 22% federal bracket, income tax savings: $3,777. Self-employment tax savings (15.3% x $17,167 x 92.35%): $2,422. Total tax savings: approximately $6,199. Use /tools/cost-per-mile-calculator to see how per diem affects your overall cost structure.

Per Diem vs. Actual Meal Receipts

You have two options for deducting meal expenses: the per diem method (flat daily rate, no receipts needed for individual meals) or the actual expense method (track and deduct every meal receipt). For nearly all truck drivers, per diem is the better choice, and here is why.

The per diem rate of $69/day assumes you are spending that much on meals and incidentals. If you actually spend less than $69/day on food — which is entirely possible if you cook in your truck — you still claim the full $69 rate. You are essentially getting a deduction larger than your actual expense, which is perfectly legal and is the intended benefit of the simplified per diem method.

Conversely, if you spend more than $69/day on meals (eating at sit-down restaurants for every meal, for example), the actual expense method could yield a larger deduction. But the documentation burden is enormous — you need a receipt for every meal showing the amount, date, location, and business purpose. Over 280 days on the road, that is 840+ meal receipts to track, organize, and retain for three to six years. One missing receipt can sink that meal's deduction in an audit.

The actual expense method also requires you to separate business meals from personal meals. If your spouse rides with you for a week, those are personal meal expenses that must be excluded. Per diem does not have this problem — the daily rate is yours regardless of travel companions (though you can only claim one per diem per day, not one per person).

There is one scenario where actual receipts make sense: if you have very high meal expenses and meticulous record-keeping, and you are in a higher tax bracket where every additional dollar of deduction matters. A driver spending $120/day on meals in expensive markets who keeps flawless receipt records would get a larger deduction under actual expenses. But for 95% of owner-operators, per diem is simpler, less audit-risky, and often yields a larger deduction than actual spending.

Common Per Diem Mistakes That Trigger Audits

The per diem deduction is legitimate and widely used, but certain mistakes attract IRS attention and can result in the entire deduction being disallowed.

Claiming per diem for days you were home is the most common error. If your ELD shows you were in your home city for 5 days but you claimed per diem for all 365 days of the year, that discrepancy will be caught. Your ELD records, fuel purchase locations, and load records all create a trail that must match your per diem day count. Be honest and accurate — slightly undercount rather than overcount if you are unsure about a specific day.

Double-dipping with carrier-paid per diem is another trigger. If your carrier pays you a per diem allowance (shown on your settlement as non-taxable per diem pay), you cannot also claim the IRS per diem deduction for those same days. You are getting the tax benefit through the carrier's arrangement. If your carrier pays per diem for some days but not others (for example, only for loaded miles), you may be able to claim IRS per diem for the uncovered days — consult a trucking CPA on this.

Using the wrong deductibility percentage costs you money in the opposite direction. If your tax software or preparer applies the standard 50% meal deduction rate instead of the 80% rate for DOT transportation workers, you lose 30% of your deduction — roughly $2,000–$3,000 in additional taxes paid unnecessarily. Always verify that your return uses the 80% rate.

Failing to establish a tax home is a fundamental eligibility issue. The IRS position is that if you have no regular or principal place of business and no regular residence, you are an "itinerant" with no tax home — and itinerants cannot claim per diem because they are never "away from home." Maintain a permanent address (owned or rented), file state taxes in your home state, and register your truck and business at that address to establish your tax home.

Not keeping a travel log is the final common mistake. While per diem eliminates the need for individual meal receipts, you still need to document which days you were away from home. A simple calendar, spreadsheet, or your ELD records satisfy this requirement. See /guides/schedule-c-trucking for how per diem integrates into your overall tax return.

Strategies to Maximize Per Diem Savings

Beyond simply claiming the deduction correctly, there are strategies to maximize the tax benefit from per diem.

Maximize your days on the road — within reason. The more qualifying days you spend away from your tax home, the larger your per diem deduction. An operator away 300 days/year deducts $16,560 (300 x $69 x 80%) compared to $13,248 for an operator away 240 days (240 x $69 x 80%). The difference is $3,312 in deductions, saving roughly $800–$1,200 in taxes. This is not a reason to stay on the road longer than your business requires, but it is worth noting that the tax benefit partially offsets the personal cost of extended time away from home.

Cook in your truck to pocket the difference between actual food spending and the per diem rate. If you spend $30/day on food by cooking but claim $69/day in per diem, the $39/day gap is essentially a tax-free benefit to you. Over 280 days, that is $10,920 in per diem deduction above your actual food cost — a phantom deduction that legally reduces your tax bill.

Combine per diem with the self-employed health insurance deduction (see /guides/health-insurance-self-employed-truckers) for maximum AGI reduction. Per diem reduces your Schedule C net income, which is the starting point for calculating your self-employment tax. The health insurance deduction further reduces your AGI. Together, these two deductions can reduce your federal tax bill by $8,000–$12,000 annually for an operator grossing $150,000–$200,000.

If you are married and file jointly, coordinate per diem strategy with your spouse's income. Per diem reduces your self-employment income, which can potentially keep your combined AGI below thresholds for other tax benefits like the Qualified Business Income (QBI) deduction under Section 199A, education credits, or child tax credit phase-outs.

Finally, consider quarterly estimated tax adjustments. Because per diem is a predictable, calculable deduction, you can factor it into your quarterly estimated tax payments (Form 1040-ES) rather than waiting until year-end. This keeps more cash in your pocket throughout the year rather than overpaying quarterly and waiting for a refund. Check /guides/tax-deductions-owner-operator for the complete list of deductions to factor into your quarterly estimates.