Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI) are the disability programs managed by the Social Security Administration (SSA). While there are many differences between SSDI and SSI, three of the biggest differences are explained below.
While SSI is a federal program (administered by the Social Security Administration), and the federal government pays a standard base rate of $735 per month, most SSI recipients receive more or less than the federal benefit rate. For starters, the federal benefit rate for couples is of $1,103, which you'll get if you are married and your spouse is eligible for SSI benefits as well. In addition, the federal rate amount regularly changes with cost of living increases.