the per diem allowance each year the dod per diem travel and transportation committee sets the per diem allowance the per diem is specific to a given travel location and can range from a standard conus rate from $ 140 per day up to $ 702 per day for out of conus rateshe proportional meal rate pmr is based on the locality meal rate and the govt meal rate gmr the per diem ta bles on this website have the pmrs already computed the examples below using the standard conus m ie rate of $ 46 00 and the standard gmr of $ 11 85 show how to compute a pmr amount