The Basic Retirement Sum (BRS) aims to provide you with retirement income that can cover basic living expenses. The government updates the BRS every year, but only provides figures one year in advance. The Full Retirement Sum, on the other hand, is two times the BRS. This means it provides you with a higher retirement income that can cover rental expenses as well. That said, if you don't own a property or want to receive full monthly payouts, you can set aside the FRS.