Supplemental Security Income (SSI) is a federal program administered by the Social Security Administration (SSA) that provides monthly payments to eligible individuals who have limited income and assets. To be eligible for SSI, an individual must be a U.S. citizen who is at least 65 years of age, blind, or disabled, have limited income, and have limited assets (less than $2,000 for individuals, less than $3,000 for married couples). Eligibility for SSI requires individuals to meet the same disability requirements as the SSDI program.