Bah Diff Rates 2024 Calculator. But if you want to get a firmer idea of what the bah rates in 2024 will be, you’ll need to use the basic allowance for. Commonly referred to as bah diff, this is bah specifically for service members living in government quarters who pay child support.

Calculate your housing allowance in seconds. Basic allowance for housing rates will increase an average of 5.4 percent when the new rates take effect on january 1, 2024.