Supplemental Security Income, administered by the Social Security Administration, provides monthly cash payments to adults and children with disabilities or blindness, and to adults age 65 or older, who have very limited income and resources. SSI is funded by general tax revenues, not Social Security taxes.
Administering agency: Social Security Administration
SSI provides monthly payments to people with disabilities and older adults who have little or no income or resources.
Visit the official the United States program page