Per Diem Rates 2025 Washington Dc. Basic allowance for housing rates will increase an average of 5.4 percent when the new rates take effect on january 1, 2025. Click on any county for a detailed breakdown of the per diem rates.
We establish the per diem rates for the continental united states (conus), which includes the 48 contiguous states and the district of columbia. The irs has announced its 2025 standard mileage rates.