2026 Per Diem Rates for Business Travel: 5 Key Changes You Need to Know

I’ll be honest: the first time I had to submit a travel reimbursement using per diem rates, I just guessed. I picked a number that felt reasonable—$75 a day for meals—and hoped my boss wouldn’t ask questions. He did. And that’s when I learned that per diem rates for business travel aren’t just a suggestion; they’re a carefully calibrated system that the IRS and General Services Administration (GSA) update every year. For 2026, the changes are significant enough that if you’re still using last year’s numbers, you’re probably leaving money on the table—or risking an audit. Let me walk you through the five key shifts I’ve tracked, starting with how these rates actually work and why they just got a shake-up.

How the 2026 Per Diem Rates Actually Work (And Why They Changed)

Per diem rates for business travel are the fixed daily amounts the federal government allows for meals, lodging, and incidental expenses when you’re traveling for work. The GSA sets these for the continental U.S. (CONUS), while the State Department handles international (OCONUS) rates. For 2026, the big driver of change is inflation—specifically, the Bureau of Labor Statistics’ Consumer Price Index for urban consumers, which rose about 3.2% year-over-year through mid-2025. That forced the GSA to bump rates to keep reimbursement realistic. But it’s not just a straight percentage increase: the GSA also adjusted how it calculates high-cost localities, which I’ll get to in Change #3. The core mechanism is simple: you pick the standard per diem rate for your destination, and as long as you stay under it, you don’t need receipts for meals or incidentals. For lodging, you still need a receipt, but the rate acts as a cap. If you go over, you can switch to the actual expense method—but that requires full documentation. The 2026 update makes these rates more generous in many places, but also tighter in a few, so knowing the nitty-gritty matters.

Change #1: Higher Standard Meal & Incidental Expense (M&IE) Rates

The most immediate change you’ll feel is in your wallet. The standard M&IE rate for most CONUS locations in 2026 rose from $59 per day to $63—a $4 bump. But high-cost areas got a bigger lift: for example, New York City’s Manhattan borough jumped from $79 to $84, and San Francisco went from $76 to $80. The GSA also introduced a new tier for mid-cost cities (like Portland, Oregon) at $71, up from $68. Incidental expenses—tips, laundry, and that overpriced airport water—are now bundled at $5 per day, up from $4.50. Why the hike? The GSA’s methodology uses restaurant spending data from the Bureau of Economic Analysis, and dining costs rose faster than general inflation. For a typical five-day business trip to a high-cost city, that’s an extra $25 you can pocket without receipts. Worth bookmarking before your next booking.

Change #2: Updated Lodging Per Diem Ceilings in Major U.S. Cities

Lodging is where the 2026 numbers really bite. The GSA raised the standard CONUS lodging cap from $96 to $101 per night, but many major cities saw bigger adjustments. Here’s a quick look at the new ceilings for popular business destinations:

• New York City (Manhattan): $299/night (up from $285)
• San Francisco: $282/night (up from $268)
• Washington, D.C.: $268/night (up from $255)
• Chicago: $219/night (up from $208)
• Los Angeles: $207/night (up from $197)
• Denver: $189/night (up from $179)

To find your specific destination, use the GSA’s official per diem lookup tool at gsa.gov/perdiem—select fiscal year 2026 and type in the city or county. A pro tip I learned the hard way: some suburbs of major cities have lower rates, so check the exact county where your hotel sits. For instance, staying in Arlington, Virginia, near D.C. gets you a $251 cap, not the D.C. rate.

Change #3: New High-Cost Locality Designations for 2026

This is the sleeper change that caught me off guard. The GSA added seven new high-cost localities for 2026, meaning higher M&IE and lodging rates apply in these areas during peak travel seasons (typically June–September). New additions include:

• Austin, Texas (June–September)
• Nashville, Tennessee (April–November)
• Charlotte, North Carolina (May–August)
• Portland, Maine (July–October)
• Salt Lake City, Utah (June–September)
• Boise, Idaho (July–September)
• Albuquerque, New Mexico (August–October)

Conversely, two localities—Myrtle Beach, South Carolina, and Savannah, Georgia—were removed from the high-cost list because hotel data showed their peak-season rates no longer met the threshold. If you travel to these cities, you’ll need to use the standard CONUS rate instead. The impact? For a week-long trip to Austin in August, your lodging cap jumps from $101 to $173, and M&IE goes from $63 to $76. That’s an extra $385 in tax-free reimbursement. Not trivial.

Change #4: Revised Substantiation Requirements for Per Diem Reporting

The IRS updated its accountable plan rules for 2026, and the key change is around documentation. Previously, you needed to log the time, place, and business purpose of every trip. That’s still true, but the IRS now requires that per diem reimbursements be reported separately on your W-2 if they exceed the federal rate. In practice, that means if your employer pays you more than the GSA rate (some companies do), the excess is now taxable income—and you’ll see it on Box 12 with code L. For employees using the per diem method, you still don’t need receipts for meals under the rate, but you must have a company policy that explicitly adopts the 2026 rates. A red flag for auditors: mixing methods. Say you claim per diem for meals but actual expenses for lodging—that’s fine, but you can’t flip-flop mid-trip. My own mistake was once claiming per diem for a three-day conference but forgetting to log the business purpose; the IRS disallowed the entire $210. Now I use a simple template: date, client name, and meeting topic. Takes 30 seconds.

Change #5: Updated Per Diem Rates for International Travel (OCONUS)

International per diem rates, set by the Department of State, also saw revisions for 2026. The standard OCONUS M&IE rate rose from $65 to $69, but high-cost destinations like Tokyo, London, and Zurich got steeper increases. For example, Tokyo’s daily rate is now $94 for meals and incidentals (up from $88), and lodging is capped at $287 (up from $272). The big difference from CONUS: OCONUS rates vary by country and city, and they include a “maximum per diem” that covers both lodging and M&IE combined. For 2026, the State Department introduced a new tier for emerging business hubs like Ho Chi Minh City ($55 M&IE, $125 lodging) and Nairobi ($48 M&IE, $110 lodging). Also, the incidental expense component for OCONUS is now $4 per day, down from $4.50—a small cut that reflects lower tipping norms in some regions. If you travel internationally, always check the State Department’s Foreign Per Diem Rates by Location (updated monthly) because rates can change mid-year due to exchange rate fluctuations.

Practical Tips for Using the 2026 Per Diem Rates Correctly

Here’s my hard-won advice after years of travel reimbursement squabbles. First, always use the GSA’s lookup tool before booking; I’ve saved hundreds by choosing a hotel just under the cap. Second, if you travel to a city with a high-cost designation, schedule trips during peak season to max out the higher rate—but verify the exact dates. Third, keep a simple log: I use a notes app with columns for date, city, and business purpose. Fourth, if your employer uses the high-low substantiation method (where you get one rate for high-cost and one for low-cost areas), make sure they’ve updated to 2026 values; some companies lag. Finally, remember that per diem is optional—if your actual expenses are lower, you still get the full rate. That’s the perk. But if you consistently spend less, your employer might adjust your policy. My takeaway: the 2026 rates are fairer and more generous, but only if you use them correctly. Bookmark the GSA page, log your trips, and don’t be afraid to ask your finance team for the updated policy. Your wallet—and your audit trail—will thank you.