IRS Announces Flat Per Diem Rate for 2025

Business travelers hoping for a little extra cushion in 2025 will have to wait. In Notice 2025-54, the IRS confirmed that per diem rates for lodging, meals, and incidental expenses will remain unchanged from last year. And that’s not the only freeze coming from the taxman; the agency also plans to eliminate paper checks from the government payment system by September 30, 2025. On the surface, these changes look like administrative housekeeping, but together they spark bigger questions: how do flat allowances stack up against rising travel costs, what does the shift away from paper mean for reimbursements, and where do businesses and employees go from here?

The Updates

Starting October 1, 2025, the high-low substantiation rates will stay the same:

• High-cost localities: $319 per day
• Other localities: $225 per day
• Meals & incidentals: $86 (high-cost), $74 (other)
• Transportation industry M&IE: $80 (CONUS), $86 (OCONUS)
• Incidental-only deduction: $5 per day

For companies and accountants, this consistency keeps systems and policies steady. For employees, however, it may feel like déjà vu as daily allowances lag behind real-world costs. The last adjustment came in 2024, when the IRS bumped per diem rates from $309 / $214 to $319 / $225, and raised transportation industry M&IE from $69 / $74 to $80 / $86. That increase reflected higher travel costs at the time. By contrast, the 2025 freeze suggests the IRS is prioritising stability, even as inflation continues to influence lodging and food prices.

Why the Freeze Matters

Flat rates are good news for employers; they avoid policy changes and reduce audit risk. But for employees travelling to high-cost cities like New York, San Francisco, or Miami, $319 often won’t stretch far. The result is tension:

• Employers must choose between reimbursing actual costs above the cap (taxable) or sticking to the flat rate.
• Employees risk paying out-of-pocket or feeling shortchanged.
• Finance leaders must balance compliance with morale, ensuring policies are both clear and fair.

The Road Ahead

If inflation keeps pushing travel prices higher, the IRS may face pressure to adjust rates again in 2026. More cities could also be added to the “high-cost” list, raising caps in select markets. Until then, organizations should document their policies carefully and communicate openly with staff to manage expectations. The IRS’s decision to freeze per diem rates for 2025 simplifies compliance but complicates the reality of business travel. With costs rising, the unchanged numbers risk widening the gap between tax law and actual spending. For accountants, controllers, and CFOs, the challenge lies in balancing clean compliance with fair treatment of employees. The IRS may be holding rates steady, but the conversation around travel costs is anything but flat.