Supplemental Security Income and Medicaid are both "need-based" federal programs intended to benefit certain categories of individuals who are legal residents of the United States--primarily those 65 or older, those who are blind or those with disabilities--who have minimal income and financial resources. However, an individual's responsibility does not end once all of the eligibility requirements for benefits have been established. An individual receiving benefits (or his or her representative payee) continues to have a duty to report changes in circumstances to the Social Security Administration and his or her State Medicaid agency. These changes may subsequently affect continued eligibility for benefits. This article will explain: (1) Who is responsible for reporting changes; (2) What changes must be reported; 3) When to report; (4) How to report; (5) The content of the report; and (6) Potential consequences of untimely reporting.