How BAH Works: Basic Allowance for Housing Explained

What BAH Is and What It Covers

Basic Allowance for Housing (BAH) is a monthly non-taxable allowance paid to service members who are not provided government quarters. It is authorized under 37 U.S.C. § 403 and administered by the Defense Travel Management Office (DTMO). BAH is designed to cover median rental costs — specifically rent plus utilities — in the civilian rental market near the service member's permanent duty station.

BAH is not taxable income under 26 U.S.C. § 134, which makes its effective purchasing power higher than an equivalent taxable wage. A service member in the 22% federal tax bracket receiving $2,000/month in BAH would need approximately $2,564 in taxable wages to have the same after-tax purchasing power.

How BAH Rates Are Set: The Annual Survey

Each year, the DoD conducts a rental market survey of approximately 300 Military Housing Areas (MHAs) across the United States. The survey collects actual rental costs for units appropriate to the service member's grade — enlisted members are surveyed for two-bedroom apartments, officers for three-bedroom homes. The DoD Comptroller then sets BAH rates to cover the median rental cost in each MHA, per DoD Instruction 1340.23.

The three factors that determine your BAH rate are: (1) your pay grade, (2) your permanent duty station's MHA, and (3) whether you have dependents. Your branch of service does not affect your BAH rate — an E-5 in the Army and an E-5 in the Navy at the same duty station receive identical BAH.

The 2026 BAH Increase

Effective January 1, 2026, BAH rates increased by an average of 5.4% under the National Defense Authorization Act for Fiscal Year 2026. This was the third consecutive year of above-average BAH increases, reflecting continued elevated rental costs in military housing markets. Individual MHA increases varied: some high-cost markets saw increases above 8%, while a small number of markets with declining rents saw smaller increases, subject to the rate protection rule.

The Dependency Differential

Service members with dependents receive a higher BAH rate than those without. The "with dependents" rate is based on a two-bedroom rental unit for enlisted and a three-bedroom unit for officers. The "without dependents" rate is based on a one-bedroom apartment for enlisted and a two-bedroom unit for officers. A qualifying dependent includes a spouse, a child (biological, adopted, or stepchild), or another family member for whom the service member provides more than half of financial support.

Once a service member has any qualifying dependent, they receive the full "with dependents" rate regardless of the number of dependents. A service member with five children receives the same BAH as one with a single dependent.

BAH Rate Protection: 37 U.S.C. § 403(b)(7)

Under the BAH rate protection provision, if the DoD reduces the BAH rate for a specific MHA in a given year, service members already receiving that rate are grandfathered at the higher amount. Their rate will not decrease as long as they remain at the same duty station with the same dependency status. New arrivals to that MHA receive the new lower rate.

Rate protection does not apply when a service member PCS (Permanent Change of Station) moves to a new duty station, changes dependency status, or is promoted to a new pay grade. Upon any of these events, the service member's BAH is recalculated at the current rate for their new circumstances.

Partial BAH and BAH-Differential

Service members who live in government quarters but pay a portion of their housing costs may receive Partial BAH. Service members who live in government quarters but pay child support or alimony may receive BAH-Differential (BAH-Diff), which is the difference between the "with dependents" and "without dependents" BAH rates for their grade and location. BAH-Diff is also non-taxable.

OHA: Overseas Housing Allowance

Service members stationed overseas receive the Overseas Housing Allowance (OHA) instead of BAH, governed by 37 U.S.C. § 403a. OHA rates are set based on actual rental costs in the foreign housing market and are updated more frequently than BAH to account for exchange rate fluctuations. OHA is also non-taxable.

Finding Your Exact Rate

The official DoD BAH calculator at the Defense Travel Management Office website allows you to look up your exact rate by ZIP code, pay grade, and dependency status. This is the authoritative source for your specific rate, as rates vary significantly within large metropolitan areas based on the specific MHA boundaries.