How much money do you need to retire comfortably according to aarp one common rule of thumb is that youll need 70 to 80 of your pre retirement income after you retire so if you made an. How much do i need to retire many people overestimate how much theyll need to live on in retirement thinking that theyll spend the equivalent of their wages the common perception is that youll need between half and two thirds of the final salary you had when you were working after tax to maintain your lifestyle once you retire. Heres a simple rule of thumb for calculating how much money you need to retire at least 1x your salary at 30 3x at 40 6x at 50 8x at 60 and 10x at 67. How much money do you need to retire the typical advice is that you should aim to replace 70 to 90 of your annual pre retirement income through savings and social security for example a