another trick i heard of, pre-requisite, your OA must hit FRS or above.
before 55, build up your FRS and let it grow till fat fat, then use all of it buy an investment product, FD, or whatever
on 55, CPF deduct all OA to fill into RA because SA is empty. sell your SA-purchased investment/FD/whatever, funds refund back to SA.. it will earn 4.5% yearly... do note: 55 and above, we can no longer top up SA or whatever, normal VC still can but too small amount to see a difference.
assume 166k back to SA. every month u get 1.xK from CPF life + 622.5 (4.5% interest
in monthly basis.) .. roughly can get 2k per month for spending.. and 166k in SA still sitting there