what is supp social security
Timeline of disability rights in the United States Supplemental Security Income. Supplemental Security Income (SSI) is a United States government program that provides stipends to low-income people who are either aged 65 or older, blind, or disabled. Although administered by the Social Security Administration, SSI is funded from the U.S. Treasury general funds, not the Social Security trust fund. SSI was created in 1974 to replace federal-state adult assistance programs that served the same purpose.