if you are thinking about earning more interest thru cpf, you might as well as transfer from oa to sa.
oa earns 3.5% on first 20k. but if you look at the fine print 2.5% go to oa and 1% go to sa. you will be paying 2.6% on hdb loan.
if you are hoping to do this, oa loses, sa wins. it is like transferring money from oa to sa
Lose 0.1% on OA, earn 1% in SA while keeping $20k in OA as buffer for installment in case you are in between jobs etc.
Transfer to SA can earn 0.5% more but lose that buffer instead and also the flexibility of using it for housing if you do well enough to upgrade your housing.
