H.R.337: To eliminate the unfair and disadvantageous treatment of cash military compensation other than basic pay under the supplemental security income benefits program.

Military Families Financial Security Act - Amends title XVI (Supplemental Security Income) (SSI) of the Social Security Act, with respect to income eligibility for SSI, to provide for the treatment of cash military compensation other than basic pay as earned income, and of certain housing payments as in-kind support and maintenance.