The two meanings of per diem
The phrase shows up in two very different contexts, and mixing them up causes real confusion. If a job posting says "per diem RN," it is describing a work arrangement. If your travel policy says "per diem is $178," it is describing an expense allowance. Same words, unrelated rules.
- Travel per diem (an allowance): a fixed daily amount your employer pays to cover hotel, meals, and small incidentals while you travel for work, instead of collecting every receipt. The federal government publishes the benchmark rates, and most private employers borrow them.
- Per diem employment (a job type): work scheduled and paid by the day or shift, with no fixed weekly hours. Hospitals, clinics, school districts (substitute teachers), and some skilled trades staff this way to cover gaps.
The rest of this guide covers both, in that order. The tax rules in the middle apply only to the travel allowance; per diem employees are just paid wages, taxed like anyone else.
Per diem for business travel: how the allowance works
When you travel overnight for work, your employer can either reimburse your actual expenses receipt by receipt, or hand you a flat daily allowance. The allowance route is the per diem. It covers two buckets: lodging (the hotel bill) and M&IE, meals and incidental expenses (food, tips for hotel staff, that kind of thing).
The General Services Administration (GSA) sets the official rates federal employees use inside the continental US (CONUS), and updates them every federal fiscal year, which runs October 1 through September 30. Private companies are not required to use GSA rates, but the rates matter to everyone because the IRS treats them as the ceiling for tax-free reimbursement.
A few mechanics worth knowing: on the first and last day of a trip you typically get 75% of the M&IE rate ($51 instead of $68 at the standard tier), lodging usually still requires a receipt even under a per diem policy, and M&IE does not. Employers can also use the IRS "high-low" method, a simplified two-tier alternative, instead of looking up each city.
GSA per diem rates for FY2026
GSA's FY2026 standard CONUS rate, in effect October 1, 2025 through September 30, 2026, is $178 per day: $110 for lodging and $68 for meals and incidentals. GSA held both numbers flat from FY2025.
| Component | Daily rate | Notes |
|---|---|---|
| Lodging | $110 | Per night, receipt usually required |
| Meals & incidentals (M&IE) | $68 | Flat allowance, no receipts |
| First and last travel day M&IE | $51 | 75% of the full M&IE rate |
| Total (full travel day) | $178 | Lodging + M&IE |
The standard rate covers roughly 2,600 counties. About 300 "non-standard areas" (big cities and resort destinations like New York, San Francisco, and Boston) get higher, often seasonal, rates. Always look up the specific city on gsa.gov before a trip; the difference can be more than double the standard lodging rate.
When per diem is taxable (accountable vs non-accountable plans)
The tax treatment hinges on whether your employer runs an accountable plan. Under an accountable plan, the per diem must be tied to real business travel, you must submit an expense report showing the time, place, and business purpose within a reasonable period, and you must return any advance you did not use. Meet those conditions, stay at or below the federal rate, and the money is completely tax-free: no income tax, no FICA, and it never appears in Box 1 of your W-2.
Per diem becomes taxable wages in four common situations:
- The plan is non-accountable: no expense reports required, or unused advances are yours to keep. The entire allowance is taxed as regular wages.
- The rate exceeds the federal rate: an employer can pay more than GSA's number, but the excess above the federal rate is taxable income.
- No overnight travel: per diem for a day trip with no sleep or rest away from home does not qualify.
- The assignment is indefinite: if a work assignment in one location is expected to last more than a year, the IRS treats that location as your tax home and the per diem becomes taxable.
If part of your pay package is a taxable "per diem" (some staffing agencies structure pay this way), it is really just wages, and it is withheld like wages. Run the numbers through our take-home pay calculator to see what actually lands in your account.
Per diem for self-employed and 1099 workers
Self-employed people cannot pay themselves a tax-free per diem, but they can use part of the system when deducting travel: the IRS lets sole proprietors and independent contractors deduct the federal M&IE rate for each business travel day instead of tracking every meal receipt. Only 50% of the meal portion is deductible, matching the normal business-meal rule.
The catch: the shortcut applies to meals only. Self-employed travelers cannot use the lodging per diem. Hotels must be deducted at actual cost, with receipts. So a freelancer on a three-day CONUS trip could deduct the M&IE allowance for each day plus whatever the hotel actually cost, but not a flat $178 a day.
Per diem as a job type: nursing, healthcare, and education
In healthcare and education, "per diem" describes a staffing arrangement, not an expense policy. A per diem nurse, therapist, or substitute teacher is on a facility's roster and picks up individual shifts as they are offered, day by day. There is no fixed schedule, no minimum hours, and usually a requirement to work a small number of shifts per month to stay active on the roster.
The trade is straightforward: flexibility and a higher rate in exchange for security and benefits. Because the employer saves on health insurance, retirement contributions, and paid leave, per diem rates run meaningfully above staff rates for the same role. In early 2026, ZipRecruiter puts the average per diem RN at about $42 an hour nationally, while Salary.com and Glassdoor peg it closer to $48 to $50; staff RN base rates in the same markets typically sit several dollars lower.
The flip side: shifts can be cancelled with little notice (per diem staff are cancelled first when a unit is overstaffed), income varies month to month, and you buy your own health insurance. A high hourly rate on paper is not the same as high annual income; our hourly to salary calculator converts any rate and weekly hours into an annual figure you can compare against a salaried offer.
Per diem job vs staff job: what actually differs
Here is the side-by-side that matters when you are weighing a per diem offer against a staff position:
| Factor | Per diem job | Staff job |
|---|---|---|
| Pay rate | Higher hourly rate, often 10-30% above staff base | Lower base rate, plus differentials and overtime structure |
| Benefits | None: no health insurance, no PTO, no retirement match, usually no sick pay | Health insurance, PTO, 401(k)/403(b) match, disability, often tuition help |
| Scheduling | You choose shifts; employer can cancel them first; small monthly minimum to stay active | Fixed or self-scheduled pattern with guaranteed hours |
| Income stability | Varies with census and season; no pay when you do not work | Predictable paycheck, paid holidays and vacation |
| Taxes | W-2 wages, taxed normally (per diem employees are not contractors) | W-2 wages, taxed normally |
| Job security | First to be cancelled or cut; easy to walk away | Stronger protections, notice periods, seniority |
One tax note worth repeating: a per diem employee is still a W-2 employee. The "per diem" in the job title has nothing to do with the tax-free travel allowance, and none of the pay is tax-exempt. (Travel nurses who take assignments away from home are a different arrangement and can receive genuine tax-free stipends.)
Worked example: per diem nurse vs staff nurse
Take a per diem RN earning $45 an hour, a plausible national figure sitting between ZipRecruiter's early-2026 average (about $42) and Salary.com's (about $48). She works three 12-hour shifts a week, 36 hours, for 50 weeks a year, taking two unpaid weeks off because there is no PTO:
| Per diem RN | Staff RN | |
|---|---|---|
| Hourly rate | $45/hr | $40/hr |
| Weekly hours | 3 x 12 = 36 hrs | 3 x 12 = 36 hrs |
| Paid weeks | 50 (no PTO) | 52 (PTO and holidays paid) |
| Gross annual pay | $81,000 | $74,880 |
| Employer health premium | None | ~$7,500 value |
| Retirement match (3%) | None | ~$2,246 value |
| Cash + benefits, roughly | $81,000 | ~$84,626 |
On cash alone the per diem nurse comes out $6,120 ahead ($81,000 vs $74,880). Add back the staff nurse's benefits, worth roughly $9,746 a year before counting paid sick leave, disability coverage, or tuition assistance, and the staff package pulls ahead by several thousand dollars. For context, the BLS puts the median pay for all registered nurses at $93,600 (May 2024 data), so experienced staff nurses often out-earn this example on salary alone.
The math flips if the per diem nurse gets coverage through a spouse, stacks shifts at premium weekend rates, or works more than three shifts in busy weeks. That is the real lesson: compare total compensation, not hourly rates. Our hourly rate calculator shows what a salary is really worth per hour, and the take-home pay calculator shows what either package leaves after tax.