How Is BAH Calculated in 2026? Complete Military Housing Allowance Guide

Last updated: October 7, 2026 | 9 min read | By Military Life Tools

Basic Allowance for Housing (BAH) is one of the largest parts of military compensation, and one of the least understood. Unlike base pay, which comes straight off a published chart, BAH depends on where you are stationed, your pay grade, and whether you have dependents. This guide explains how the Department of Defense actually builds the rate, what changed for 2026, and how to find your exact number.

What is BAH?

BAH is a tax-free monthly allowance paid to active-duty service members who are not provided government housing. It is intended to cover most — not all — of the cost of renting off-base housing near your duty station.

• Tax-free. BAH is excluded from federal taxable income, so the full amount is yours.
• Location-based. The rate follows your duty station, not where you choose to live.
• Set annually. New rates are published each December and take effect January 1.
• Identical across services. A soldier and a sailor in the same ZIP code and pay grade receive the same BAH.

For 2026, rates rose an average of 4.2% across roughly 300 military housing areas — a smaller increase than the 5.4% average in 2025. The change reaches about one million service members and costs roughly $29.9 billion.

The three factors that determine your BAH

1. Duty station location

Your rate is tied to the Military Housing Area (MHA) that covers your duty station ZIP code. An MHA is a county group or metro area, so neighbouring ZIP codes usually share one rate. Expensive metros such as San Francisco, New York, Boston, and San Diego carry the highest rates; smaller markets carry the lowest.

2. Pay grade

Higher grades receive more. DoD publishes a rate for every grade from E-1 through O-10. The steps are not even: the gap between E-4 and E-5 is far smaller than the gap between E-9 and O-4.

3. Dependency status

There are two rates per grade and location — with dependents and without. The with-dependents rate is higher because it is built around a larger housing profile. The number of dependents does not matter: one dependent and five dependents pay the same BAH.

How the rate is actually built

DoD does not use a single public formula you can plug numbers into. The process works like this:

1. Local market rent survey. Each year DoD collects rental cost data for the MHA and prices out a standard housing profile for each pay grade — a mix of apartments, townhouses, and single-family homes with a set number of bedrooms.
2. Add utilities. Average local utility costs are folded in, so the allowance covers rent plus basic utilities.
3. Apply the out-of-pocket share. By law, service members absorb 5% of the national average housing cost for their grade. In practice that is roughly $93 to $212 a month depending on grade.
4. Publish by grade and dependency status. The result is one monthly figure per grade per MHA, in with- and without-dependents versions.

Because the survey is location-specific there is no shortcut formula. Any calculator that claims BAH equals a national rent figure multiplied by a pay-grade factor is oversimplifying — the real number comes from the published rate table for your MHA and grade.

The practical consequence: BAH is designed to cover about 95% of housing costs, not 100%. In expensive markets the gap is often wider than the national average.

What changed for 2026

The increase was not uniform. A few metros rose by more than 6%, while a small number of areas saw rates fall.

How much BAH varies in practice

Two 2026 examples for an E-5 with dependents show the spread:

That is a difference of more than $2,100 a month for the same rank and the same family situation, which is why "how much is BAH?" has no single answer. Across all housing areas, published 2026 rates run from under $900 a month for the most junior grades in the cheapest markets to more than $8,000 a month for senior officers in the most expensive ones.

For your exact figure, use the official rate lookup rather than an estimate.

Rate protection: why your BAH may not match the table

If your housing area's rate falls in a given year, you do not take the cut. Under DoD's rate-protection rule you keep your existing, higher rate for as long as you stay at that duty station. The published table shows what a member arriving at that location would receive today.

Two other things change your BAH mid-year:

• A PCS move. Your rate switches to the MHA of the new duty station.
• A dependency change. Marriage or a new dependent moves you to the with-dependents rate — but only once the change is recorded in DEERS. Update DEERS first, then expect the pay change to follow.

There is also BAH-DIFF, a separate and lower allowance that applies to certain members without dependents who are eligible for government housing but do not occupy it. BAH-DIFF is set by DoD independently of the main BAH tables, so it is not something you can read off the location charts. If you think it applies to you, confirm with your finance office.

Common BAH mistakes

• Assuming BAH covers your whole rent. It is built to cover about 95% of housing costs, and the gap is larger in expensive markets.
• Using the wrong ZIP. BAH follows your duty station, not your landlord's ZIP. Commuting in from a cheaper MHA does not change your rate.
• Forgetting to update DEERS. A marriage or new dependent does not raise your BAH until the record is updated.
• Planning a lease around last year's table. Rates are republished every December. Confirm the current figure before you sign.

Frequently asked questions

Official resources

• DTMO — Basic Allowance for Housing (official rate lookup and publications)
• DoD Military Pay — Allowances
• Military OneSource

Related: BAH calculator · Military pay calculator · 2026 BAH rates by ZIP code · BAH calculator guide