For federal employees under the Federal Employee Retirement System, the FERS Supplemental Annuity provides additional income when they retire before reaching Social Security eligibility. This annuity is based on your years of service and average salary, offering a temporary income stream until you reach the age of 62, when you can begin receiving Social Security benefits. It is import... https://www.federalpensionadvisors.com/post/what-is-fers-annuity-supplement