Hawaii Bah Calculator 2025. For further details, service members can view the updated 2025 bah rates using the defense department’s bah calculator. The dod calculates bah rates based on a uniformed service member's geographic duty location, paygrade and dependency status, along with housing costs in.

To calculate your bah rate, enter your pay grade and duty station into the bah calculator. Enter your rank, service years, and dependents to get started.