A federal program paying inflation-adjusted retirement income based on your work history.
Social Security provides monthly retirement benefits funded by payroll taxes over your working life. The benefit is based on your highest-earning years, and the age you claim — anywhere from 62 to 70 — changes the amount: claiming earlier reduces it, while waiting past full retirement age increases it by roughly 8% per year up to 70.
Delaying a Social Security claim from 67 to 70 permanently raises the monthly benefit.