Supplemental Security Income (SSI)

Supplemental Security Income is frequently confused with Social Security Disability Insurance (SSDI), but the two programs are fundamentally different. SSDI is an earned benefit financed through FICA payroll taxes, tied to a worker's earnings history and credited contributions. SSI is a welfare-style assistance program financed from general federal tax revenues, available to individuals who have either insufficient work history for SSDI or whose income and assets fall below strict program limits regardless of work history.

The federal benefit rate for SSI in 2024 was $943 per month for an eligible individual and $1,415 per month for an eligible couple. Many states supplement the federal SSI payment with state-funded additions, so actual monthly payments can vary by state of residence. The federal rate is adjusted annually by the same Cost-of-Living Adjustment mechanism used for Social Security retirement benefits.

SSI eligibility requires that the applicant be aged 65 or older, blind, or have a qualifying disability — the same medical disability standard applied to SSDI. Additionally, the applicant must have countable income below the federal benefit rate and countable resources (assets) below $2,000 for an individual or $3,000 for a couple. The resource limit has not been updated since 1989 and is frequently criticized as too restrictive for modern economic conditions. Certain assets are excluded from the resource count, including the primary home, one vehicle, household goods, and burial funds up to specified limits.

Recipients of SSI are automatically eligible for Medicaid in most states, which provides critical health coverage access. In some states, SSI receipt also triggers automatic enrollment in food assistance programs.

SSI can interact with Social Security retirement or SSDI benefits in complex ways. A person receiving both SSI and Social Security has their SSI payment reduced dollar-for-dollar by their Social Security benefit above a modest income disregard. The first $20 of Social Security income is disregarded, meaning a Social Security recipient who receives more than $20 per month will see their SSI benefit reduced by the excess.

For retirement planners working with low-income populations, understanding SSI's income and asset rules is important for avoiding unintentional program disqualification through retirement account distributions, gifts, or asset transfers.