Army Cost of Living Allowance Calculator

The Army Cost of Living Allowance (COLA) calculator helps you determine your military housing allowance based on your duty station and family size. This tool uses official military housing rates to provide accurate estimates for your specific situation.

How to Calculate Army COLA

The Army Cost of Living Allowance is calculated using a combination of your duty station's housing rates and your family size. The official formula takes into account:

Basic Allowance for Housing (BAH) rates for your duty station
Your family size (single, married, with dependents)
Your rank and grade level
Any applicable special duty or hazardous duty pay adjustments

The calculator uses the most current BAH rates published by the Department of Defense. These rates are updated annually to reflect changes in the cost of living.

COLA Formula

Formula

Army COLA = BAH Rate × Family Size Factor × Rank Adjustment

Where:

BAH Rate = Basic Allowance for Housing for your duty station
Family Size Factor = 1.0 for single, 1.1 for married, 1.2 for married with dependents
Rank Adjustment = 1.0 for E-1 to E-4, 1.1 for E-5 to E-6, etc.

The BAH rates are determined by the location of your duty station and are published by the Army. The family size factor accounts for additional housing costs associated with larger families. The rank adjustment reflects the increased responsibilities and potential additional housing needs of higher-ranking personnel.

Worked Example

Let's calculate the COLA for a Sergeant (E-5) stationed in Washington, D.C. with a family of two (married):

BAH Rate for Washington, D.C. (E-5): $2,100/month
Family Size Factor: 1.1 (married)
Rank Adjustment: 1.1 (E-5)

Calculation: $2,100 × 1.1 × 1.1 = $2,541

Therefore, the estimated Army COLA for this scenario is $2,541 per month.

Note

Actual COLA amounts may vary slightly from this example due to rounding in the official BAH tables and any additional special duty or hazardous duty pay adjustments.

Key Factors Affecting COLA

Several factors influence your Army Cost of Living Allowance:

Factor	Impact
Duty Station Location	BAH rates vary significantly by location, with the highest rates in major cities and the lowest in rural areas.
Family Size	Larger families receive higher allowances to account for increased housing costs.
Rank	Higher-ranking personnel receive higher allowances to reflect increased responsibilities.
Special Duty Pay	Additional pay for personnel serving in high-demand or hazardous locations.
Cost of Living Adjustments	Annual updates to BAH rates based on changes in the cost of living.

FAQ

How often are BAH rates updated?: BAH rates are updated annually based on changes in the cost of living. The most current rates are published by the Army and used in this calculator.
What if my duty station isn't listed?: If your duty station isn't listed, you can use the BAH rate for the nearest comparable location. For exact rates, consult your local Army housing office.
Do I need to pay taxes on my COLA?: Yes, your COLA is subject to federal, state, and local taxes. The amount you receive after taxes will be less than the gross amount shown in the calculator.
Can I get a higher COLA if I have a larger family?: Yes, the calculator accounts for family size with higher allowances for larger families to reflect increased housing costs.
How do I find my exact BAH rate?: You can find your exact BAH rate by visiting the official Army BAH website or consulting with your local Army housing office.