The House Committee passed the National Defense Authorization Act for Fiscal Year 2013. The proposed average increase for 2013 BAH (Basic Allowance for Housing) rates is 4.2%.
Approved and final 2013 BAH rate charts will not be released until December 2012.
Excerpt from the DoD budget proposal via the Under Secretary of Defense (Comptroller) public website:
For the basic allowance for housing (BAH) and basic allowance for subsistence (BAS), the FY 2013 budget request includes a 4.2 percent average rate increase in BAH and a 3.4 percent increase in BAS effective January 1, 2013. However, the actual increases will be based on a “by location” housing market analysis conducted for the Department of Defense and a food cost index prepared by the Department of Agriculture, both of which are measured much closer to the effective date to ensure they best capture the actual cost impact on the service member.