What is SSI? What is Supplemental Security Income?

SSI is short for Supplemental Security Income. It is a disability benefit with the Social Security Administration that's available to those who maybe didn't work long enough or pay enough Social Security credits to qualify for SSD or disability insurance. However, there is one other major qualification for SSI, and that is you cannot have much in the way of assets or much in the way of family income to qualify for that type of benefit.