‘SSI’ stands for Supplemental Security Income, a needs based welfare program for blind and disabled low income earners.
‘SSDI’ stands for Social Security Disability Insurance. It is also known as Social Security Disability (SSD) or Disability Insurance Benefits (DIB).
SSI & SSDI are both monthly disability benefit payments people can receive from the government, but they’re paid to different types of people.
SSI is a known as a ‘needs-based’ program (or ‘welfare’ program). This means it’s paid to people with a disability who don’t have enough money to get by without it.
SSDI is different – it’s more like an insurance payout than a welfare payment. SSDI is something people can get if they have been working and paying taxes to fund the Social Security system for long enough. This means it’s paid to people with a disability regardless of how much other money they have.