Supplemental Security Income (SSI), not to be confused with Social Security Disability Income (SSDI), is a federally funded assistance program for low-income older people, people who are blind, and people with disabilities, including mental disabilities.
Eligibility requirements are based on being a United States citizen and falling below a certain income and financial asset level ($2,000 for an individual and $3,000 for a couple).
To meet the disability requirement for SSI, the disability must:
• Result in the inability to engage in any substantial gainful activity; and be expected to result in death; or
• Have lasted, or can be expected to last, for a continuous period of not less than twelve months