Social Security Disability Insurance (SSDISocial Security Disability Insurance is a payroll tax-funded federal insurance program of the United States government. It is managed by the Social Security Administration and designed to provide income supplements to people who are physically restricted in their ability to be employed because of a notable disability.)
SSDI is a commonly used acronym for Social Security Disability Insurance, a program that offers monthly Social Security Disability payments to people under age 65 who have qualifying disabilities and sufficient work credits.