Some Air Force travelers may not be aware of a flat rate per diem policy established a few years ago that focused on extended temporary duty travel.
Congress instituted the flat rate in November 2014. The new policy reduced per diem from 100 percent to 75 percent for TDYs from 31 to 180 days and to 55 percent for TDYs over 180 days. What this means is for a traveler whose TDY runs 31 to 180 days in length, the entire TDY per diem is paid at 75 percent. For a traveler whose TDY runs more than 180 days, the entire TDY per diem is paid at 55 percent.