Per Diem and Stipends: Taxable or Not? (2026 Rules)

Disclaimer: This article is for educational purposes only and is not tax, legal, or financial advice. Tax rules change periodically, always check current IRS/state guidance or consult a professional.

Quick Answer: Taxable or Not?

Per diem and stipends are tax-free when three things line up: your employer runs an accountable plan, the payment stays within the federal rate, and you document the expense. Miss any one of those and the money becomes taxable wages.

The label on the payment does not decide anything. What matters is the structure behind it. A “per diem” paid as a flat weekly amount with no expense report is taxable. A documented reimbursement at the federal rate is not.

This guide covers both per diem (a daily travel allowance) and stipends (fixed periodic payments for health, wellness, education, remote work, or travel-nurse housing and meals). It also walks through what happens to your paycheck when part of the money is taxable, which is where people actually lose dollars.

Per Diem vs. Stipend: What Is the Difference?

Per diem is a daily allowance that covers lodging, meals, and incidental expenses while you travel for work away from home. Instead of collecting every hotel and restaurant receipt, your employer pays a set daily amount. The Latin phrase just means “per day.”

A stipend is a fixed, recurring payment tied to a category of spending rather than a specific trip. Common examples include health stipends, wellness stipends, remote-work or home-office stipends, education stipends, and the housing and meal stipends that travel nurses receive.

The two work differently under the tax rules, but they come down to the same question: is this money a genuine reimbursement of a business expense, or is it extra pay dressed up as an allowance? The answer decides whether it lands on your W-2.

The One Rule That Decides It: The Accountable Plan

Most of the “taxable or not” question comes down to whether your employer uses an accountable plan. It is an IRS framework from Publication 463, and it has three requirements.

Business connection. The expense has to be a legitimate business cost you incurred while doing your job, such as lodging on a work trip.
Substantiation. You have to prove the expense with records (date, place, business purpose, and amount) within a reasonable time.
Return of excess. Any money you receive above what you actually spent has to be paid back to your employer.

Meet all three, stay within the federal rate, and the payment is tax-free. It does not appear as wages on your W-2, and nothing is withheld from it.

The IRS gives safe-harbor timeframes for “reasonable time”: you generally have 60 days to substantiate an expense and 120 days to return any excess. Employers can also use a periodic-statement method that resets those clocks.

A non-accountable plan is the opposite. If your employer pays a flat allowance, does not ask for receipts, or lets you keep money you did not spend, the payment is taxable. It gets added to Box 1 of your W-2 and is treated like ordinary wages.

2026 Per Diem Rates and When Per Diem Stays Tax-Free

To stay tax-free, per diem generally has to stay at or below the federal rate. There are two sets of numbers here, and people mix them up constantly, so it is worth pinning down which is which.

The GSA standard CONUS rate

The General Services Administration sets the standard rate for the continental United States (CONUS). For fiscal year 2026, the standard rate is $178 per day: $110 for lodging and $68 for meals and incidental expenses (M&IE). That figure was held flat from fiscal year 2025.

One detail trips up almost every article on this topic. GSA per diem rates run on the federal fiscal year, October 1, 2025 through September 30, 2026, not the calendar year. So the FY2026 rate has been in effect since October 1, 2025. High-cost cities have their own higher locality rates that replace the standard $178.

The IRS high-low substantiation method

Instead of looking up a city-by-city rate, employers can use the IRS high-low method from Notice 2025-54, a simplified alternative. For travel on or after October 1, 2025, it sets $319 per day for high-cost localities and $225 per day for all other CONUS locations. The meals-only portion is $86 (high-cost) and $74 (other).

A locality counts as “high-cost” when its federal per diem is $272 or more. There is also a $5 per day incidental-expenses-only rate, and a special M&IE rate for the transportation industry of $80 CONUS / $86 OCONUS.

Here is the distinction that matters: $225 and $319 are the high-low method, not “the” standard rate. Plenty of articles quote them as the everyday per diem figure without saying so. The GSA standard rate is $178.

The overnight rule

Per diem is only tax-free when your trip is long enough to require sleep or rest away from your tax home. This is the “away from home” test. A same-day trip with no overnight stay does not qualify, so a day-trip allowance is usually taxable even if your employer calls it per diem.

When Per Diem or a Stipend Becomes Taxable

Plenty of common situations flip an allowance into taxable wages. Watch for these.

Payment above the federal rate. If your per diem exceeds the applicable federal rate and you do not return or substantiate the extra, the excess is taxable wages.
No expense report. Without substantiation under an accountable plan, the whole payment is taxable.
Flat allowances. A fixed weekly or monthly amount that is not tied to actual, documented expenses is taxable.
No overnight stay. Day-trip per diem with no sleep or rest away from home is generally taxable.
Stipends for personal living costs. Health, wellness, and remote-work stipends paid as cash for personal expenses are taxable income.
1099 contractor per diem. Per diem paid to an independent contractor is generally fully taxable self-employment income. (Our self-employment tax explainer breaks down how that is taxed.)

Education stipends follow their own split. Money used for tuition and required fees can be tax-free for a degree candidate, but amounts used for room, board, or general living costs are taxable.

Travel-nurse stipends deserve a special note. Housing and meal stipends are only tax-free if you maintain a legitimate tax home (a real, ongoing residence you are duplicating costs for while on assignment). Without a qualifying tax home, those stipends become taxable wages.

How a Taxable Stipend Hits Your Paycheck

Most guides skip this part, and it is where the money actually goes. When part of a per diem or stipend is taxable, it is treated as supplemental wages, the same category as bonuses and commissions.

Supplemental wages have their own federal withholding rules. The flat rate is 22% (not 20%, a figure you will see repeated online). On supplemental wages above $1 million in a year, the rate jumps to 37% on the excess.

On top of the 22%, a taxable stipend is still wages, so FICA applies:

Social Security: 6.2% on wages up to the 2026 wage base of $184,500.
Medicare: 1.45% on all wages, plus an Additional Medicare Tax of 0.9% once your wages pass $200,000 (single).
State income tax, wherever your state charges it.

A quick example. Say your employer pays you a $2,000 taxable housing stipend that does not qualify as a tax-free reimbursement.

Federal supplemental withholding (22%): $440
Social Security (6.2%): $124
Medicare (1.45%): $29
Subtotal before state tax: $593 withheld, leaving about $1,407

Add state income tax and the net shrinks further. So a “$2,000 stipend” can land closer to $1,300 to $1,400 in your account, depending on your state.

Note the difference in timing. The GSA and IRS per diem rates run on the federal fiscal year (October to September), while the 22% supplemental rate and the $184,500 Social Security wage base apply to calendar year 2026. Both are current figures, just measured on different clocks.

If you want to see the real take-home effect, Pay44 lets you add an income item and flag it as taxable or non-taxable, so you can model exactly what a taxable stipend does to your paycheck. Our FICA tax calculator and bonus tax calculator handle the supplemental-wage math side by side.

Recordkeeping: How to Keep Your Money Tax-Free

Keeping per diem and stipends off your W-2 is mostly about paperwork and staying inside the rules. Five habits cover it.

Confirm your employer uses an accountable plan. If they do not, the payment is taxable no matter how careful you are.
Keep an expense report for every trip. Record the date, place, business purpose, and amount. Save it within the 60-day window.
Stay at or under the federal rate. For FY2026, that is $178 per day standard, or the high-low figures if your employer uses that method.
Return any excess. If you got more than you spent, pay it back within 120 days.
Protect your tax home if you rely on travel stipends. Maintain a genuine residence with ongoing costs so your away-from-home stipends qualify.

Do those five things and the money stays yours. Skip them and the IRS treats the payment as pay, with the 22% supplemental hit and FICA on top.

For more on how different pay types are taxed, see our guides on FICA taxes and imputed income on your paycheck.

References

GSA — FY2026 CONUS Per Diem Rates — The $178 standard rate ($110 lodging + $68 M&IE), held flat from FY2025.
GSA — Per Diem Rates — Fiscal-year definition (Oct 1 – Sep 30) and locality rate lookup.
IRS — Notice 2025-54, Special Per Diem Rates — High-low method ($319 / $225), M&IE rates, and the $272 high-cost threshold, effective Oct 1, 2025.
IRS — Publication 463, Travel, Gift, and Car Expenses — Accountable plan requirements and the 60-day / 120-day safe harbors.
IRS — Publication 15 (Circular E) — The 22% supplemental wage withholding rate (37% over $1 million).
IRS — Topic No. 751, Social Security and Medicare Withholding Rates — 6.2% Social Security, 1.45% Medicare, and the 0.9% Additional Medicare Tax.
SSA — Contribution and Benefit Base — The 2026 Social Security wage base of $184,500.
IRS — Publication 5137, Fringe Benefit Guide — Taxable reimbursements and W-2 (Box 1) reporting.
IRS — Topic No. 421, Scholarships and Fellowship Grants — Tax treatment of educational stipends for tuition versus living costs.

Frequently Asked Questions

Is per diem taxable income?

Not if it is paid under an accountable plan, within the federal rate, and properly documented. The excess or any undocumented amounts are taxable wages reported on your W-2.

Are stipends taxable?

It depends on purpose and structure. Reimbursements for substantiated business expenses under an accountable plan can be tax-free, but stipends for personal living costs are taxable and added to Box 1 wages on your W-2.

What is the 2026 standard per diem rate?

The standard CONUS rate is $178 per day ($110 for lodging plus $68 for meals and incidentals) for the federal fiscal year October 1, 2025 through September 30, 2026, unchanged from fiscal year 2025.

What happens if per diem exceeds the federal rate?

The excess becomes taxable wages, subject to 22% federal supplemental withholding plus Social Security and Medicare.

Is per diem taxed if there is no overnight stay?

Generally yes. Per diem is only tax-free for travel that requires sleep or rest away from your tax home, so day-trip allowances are usually taxable.

Are travel nurse housing and meal stipends tax-free?

Only if you maintain a legitimate tax home, keep records, and receive them under an accountable plan within federal rates. Otherwise they are taxable.

Is per diem taxable for 1099 contractors?

Yes. Per diem paid to independent contractors is generally fully taxable self-employment income.

How is a taxable stipend withheld on my paycheck?

As supplemental wages: 22% flat federal withholding (37% above $1 million), plus 6.2% Social Security up to the $184,500 2026 wage base, 1.45% Medicare, and any applicable state tax.