Per diem calculator

Enter your destination and travel dates. The calculator uses the official GSA rate for each night (including seasonal and fiscal-year changes) and pays 75% M&IE on the first and last day.

Your trip

Worked example

Three nights in San Diego from November 17 to 20: lodging 3 × $208 = $624. M&IE is $86 a day, so the first and last days pay 75% ($64.50) and the two middle days pay $86: $301. Maximum total: $925, plus hotel taxes.

How the calculation works

Lodging is paid for each night at the rate in effect that night, up to the maximum. No lodging on the return day.
M&IE is the daily meals and incidentals rate; the first and last travel days are paid at 75%.
Trips over October 1 use the old fiscal year rate before October 1 and the new rate after.
Same-day travel gets per diem only when the trip lasts more than 12 hours (75% M&IE).

This follows the Federal Travel Regulation (41 CFR 301-11). Your agency may have additional rules.