The Supplemental Security Income (SSI) is a federal income supplement program authorized under Social Security Act. SSI was created in 1974 as a way to standardize the level of benefits people were getting from state programs. The SSI program is funded by general taxes from the U.S. Treasury general funds, rather than by Social Security tax. It is designed to help disabled individuals who have little or no income and is awarded on a need basis. SSI benefits provide money for basic needs like food, clothing, and shelter.
The SSI program generally follows the same disability criteria as the Social Security Disability Insurance (SSDI) benefits program, but SSI is based on a financial need. Earned work credits are not a requirement for SSI.