Supplemental Security Income (or 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. The restructuring of these programs was intended to standardize the eligibility requirements and level of benefits. The new federal program was incorporated into Title XVI (Title 16) of the Social Security Act. Today the program provides benefits to approximately eight million Americans.

The legislation creating the program was a result of President Nixon's effort to reform the nation's welfare programs. At that time, each state had similar programs under the Aid to the Blind, Aid to the Permanently and Totally Disabled, and Aid to the Elderly. The Nixon Administration thought these programs should be federalized and run by the Social Security Administration. Thus, SSI was created to eliminate the differences between the states including different disability standards and income and resources requirements, which many perceived as irrational or unfair. President Richard Nixon signed the Social Security Amendments of 1972 on October 30, 1972 which created the SSI Program. The SSI program officially began operations in January 1974 by federalizing states' programs, designating the Social Security Administration (SSA) to administer the SSI program. SSA was selected because it had been administering a nationwide disability program under the Social Security Disability Insurance Benefits (DIB) program since 1956 under the Old Age, Survivors, and Disability Insurance (OASDI) programs associated with FICA payroll taxes.

Payments for SSI are made for the first day of the month, unless the first of the month is on a Weekend or a legal holiday, in which case the payment is made on the first day prior that is not a weekend or a legal holiday. The minimum benefit is $1 (USD).

The SSI program, or Title XVI of the Social Security Act 1611, provides monthly federal cash assistance of up to $698 for an individual and $1,011 for a couple (as of 2011) to help meet the costs of basic needs of food, shelter and clothing. In most states, SSI eligibility usually assures concurrent access to important medical coverage under the various state Medicaid programs and sometimes access to Section 8 housing benefits. In some states, supplemental payments are made by the state, increasing the cash assistance available through SSI. For example, the state of California, through its State Supplementation Program (SSP), increases the cash assistance by $171 per month for a disabled or aged individual with access to cooking facilities in 2011, making the total SSI benefit $845 per month.

SUPPLEMENTAL SECURITY INCOME RECIPIENTS QUALIFY FOR LIFELINE SERVICE