2026 BAH Rates Are Up 4.2%. Here's How That Changes Your Mortgage Math.

Your Housing Allowance Went Up. Now Do the Math Before It Goes to Rent.

The Department of Defense confirmed a 4.2% average increase to Basic Allowance for Housing rates for 2026, effective January 1. That's smaller than the 5.4% increases service members saw in 2024 and 2025, but it's still real money, and for San Diego-based military families, it's meaningful. An E-5 with dependents stationed in San Diego now receives roughly $3,975 per month. An E-6 with dependents is closer to $4,404. An E-7 sits around $4,446.

Most service members see that bigger number hit their pay statement in January and keep their rent situation exactly the same. That's fine. But if you've been thinking about buying, this is the moment to run the actual mortgage math instead of assuming your BAH will or won't cover a mortgage payment. Here's the checklist to work through before you do anything else.

The 2026 BAH-to-Mortgage Checklist

Step 1: Pull Your Exact 2026 BAH Rate

Don't guess from last year's LES. Don't use a rough average. Go to the Defense Travel Management Office BAH calculator and enter your duty ZIP code, your pay grade, and your dependency status. That gives you the exact number you'll be working with for the full year.

For context, here are the 2026 rates at MCRD San Diego and Naval Base San Diego for some common pay grades:

• E-5 with dependents: $3,975/month
• E-6 with dependents: $4,404/month
• E-7 with dependents: $4,446/month
• O-3 with dependents: $4,518/month
• O-4 with dependents: $5,082/month

Without dependents, the rates drop by roughly 23%. If your family situation changed recently (new spouse, new child, divorce), make sure the rate you're looking at matches your current dependency status.

Step 2: Calculate Your Real Monthly Payment (Not Just Principal and Interest)

This is where most buyers go wrong. They see a $450,000 home and a 6.5% rate and plug those into a calculator that spits out a principal and interest payment of around $2,844. Then they compare that to their BAH and think they're in great shape. They're not. That calculator left out four major costs.

A real monthly payment (PITI, which stands for Principal, Interest, Taxes, and Insurance) includes:

• Principal and Interest: The base mortgage payment from the loan amount and interest rate.
• Property Taxes: In San Diego County, roughly 1.1% to 1.25% of the purchase price annually. On a $450,000 home, that's $412 to $469 per month.
• Homeowner's Insurance: Typically $100 to $150 per month in San Diego, higher if you're in a fire zone.
• HOA Dues (if applicable): Many San Diego condos and planned communities charge $200 to $500+ per month. Single-family detached homes often have no HOA.

On that same $450,000 purchase, a realistic full PITI payment lands closer to $3,450 to $3,700 per month before any HOA. That's the number you compare against your BAH, not the principal and interest alone.

Step 3: Check the Coverage Ratio

Here's where the math gets clarifying. Take your real PITI and divide it by your BAH. That's your coverage ratio. If an E-5 with dependents at $3,975 BAH is looking at a $3,450 PITI payment, the coverage ratio is about 87%. That means BAH covers most of the payment but you're putting roughly $525 out of pocket each month.

Is that good or bad? That depends on your total financial picture, but here's the framework:

• Under 90% coverage: BAH comfortably covers your mortgage with buffer for maintenance, vacancy (if you rent it later), and rate changes.
• 90% to 100% coverage: BAH covers the payment or comes very close. You're in a strong position but thin on buffer.
• Over 100% coverage: You're paying out of pocket every month. That's not automatically wrong, but you need to be clear-eyed about it. Ask yourself whether the equity build and appreciation justify the monthly gap.

Step 4: Gross Up Your BAH for Qualifying Purposes

BAH is tax-free. That's huge for two reasons. First, it's the money you actually keep each month. Second, lenders are allowed to gross up tax-free income by approximately 25% when calculating your debt-to-income ratio for loan qualification. An E-5 with a BAH of $3,975 gets treated like someone earning approximately $4,969 in taxable wages when the lender runs your numbers.

That gross-up is the reason military buyers can often qualify for more home than civilian buyers with the same take-home income. But it only works if your lender knows how to apply it. Ask upfront whether they're grossing up your BAH and what multiplier they're using.

Step 5: Factor In Rate Protection and PCS Risk

BAH has a rate protection rule: as long as you stay at the same duty station in the same pay grade with the same dependency status, your BAH will not decrease even if the published rate drops. That's good news for anyone buying and planning to stay put.

But rate protection does not travel with you. When you PCS, your BAH resets to the new duty station's table. That could be higher or lower. If you're buying in a high-BAH market like San Diego and your next duty station pays less, the math for keeping the house as a rental needs to work at the new number, not the old one. Run the rental scenario now, not after orders come in.

Step 6: Build In a Maintenance and Vacancy Reserve

This is the step most first-time buyers skip. A home needs roughly 1% of its value per year in maintenance on average. On a $450,000 home, that's $4,500 per year, or $375 per month tucked away. If you ever convert the property to a rental, you should also plan for 5% to 10% vacancy and 8% to 10% property management if you're not self-managing. Add those to your payment before you decide whether BAH covers everything.

Pro Tip: The cleanest way to stress-test a purchase is to ask: "If I subtract my full PITI, maintenance reserve, and a 10% rental vacancy factor from my BAH, am I still in the black?" If yes, the purchase has real long-term flexibility. If no, you're not wrong to buy, but you should know you're committing to covering the gap from base pay, not BAH alone.

Does BAH Cover the Entire Mortgage?

This is the question that gets asked constantly, and the honest answer is: sometimes. In markets with moderate home prices relative to BAH, like inland Texas, Florida, or some Midwest duty stations, BAH can fully cover PITI on a reasonable starter home with room to spare. In high-cost markets like San Diego, Hawaii, or the Bay Area, BAH typically covers most of a mortgage payment on a modest home but rarely covers 100% on anything larger than a small condo or entry-level single-family home.

The 4.2% increase for 2026 helps close that gap but doesn't eliminate it. Run your specific numbers using your specific BAH, your specific target purchase price, and current interest rates.

Frequently Asked Questions

Does BAH cover the entire mortgage in San Diego?

In most cases, no. With 2026 BAH rates averaging $3,975 for E-5 with dependents and $4,404 for E-6 with dependents at San Diego bases, BAH typically covers 75% to 90% of a full PITI payment on an entry-level home. The remaining gap comes out of base pay or savings. Lower-priced condos or homes in surrounding inland areas can push that coverage higher.

Can I use BAH as qualifying income for a VA loan?

Yes. BAH is one of the most widely accepted forms of qualifying income on VA loans. Because it's tax-free, most lenders will gross it up by approximately 25% when calculating your debt-to-income ratio, which increases your qualifying power.

What happens to my mortgage if my BAH decreases after a PCS?

Your mortgage payment stays exactly the same. BAH is an allowance tied to your duty station, not a mortgage subsidy. If you PCS to a lower-BAH area, you either need to cover the gap from base pay, convert the property to a rental with tenant income replacing BAH, or sell. Plan for this before you buy.

Do BAH rates count for civilians or veterans no longer on active duty?

No. BAH is a benefit for active duty service members. Once you separate or retire, BAH stops. If you used BAH to qualify for a mortgage, the lender considered your ability to repay based on your active-duty income at that time. After separation, your budget is based on your new income source, whether that's retirement pay, a civilian job, or VA disability compensation.

How do I find my exact 2026 BAH rate?

Use the official Defense Travel Management Office (DTMO) BAH calculator. Enter your duty ZIP code, your pay grade, and your dependency status. The rate it returns is the amount you'll receive monthly throughout 2026 unless your situation changes.

For more on how to think through military home buying decisions, check out our other guides on VA loans and PCS planning.

Want to run your specific 2026 BAH math against a real purchase price? Call me at (619) 485-8293 or connect with me here and we'll walk through it line by line.

This content is for informational purposes only and is not legal advice. All real estate services comply with NAR, HUD, and California DRE regulations.