Actually not sure if I'm even making sense here. Read somewhere that we can refund the amount we used for purchasing a house without selling the house. (not sure if can do partial repayment, just wrote in to check with CPF) Just wondering if it makes more sense to get tax rebate or reduce the house repayment amount. Or better to keep the excess to reduce the remortgage amount when my lock-in period expires next year.
Let's do some maths.
Accrued interest are amount you will earn, if you leave the money in CPF. That's incurring 2.5% loan imho (which you can waive later on).
Tax Relief is immediate saving of 2% up to 22%
CPF RSTU is a 4% interest or If you do Voluntary contribution, it's a 2.8% to 3% interest.
If we add up tax relief and interest rates, my humble opinion is CPF RSTU + Tax Relief is better than refunding.
Yes, you can put cash back into CPF and specifically to return (in full or in part) the amount used for property.
This is also my recommendation to you because: -every dollar you take out of CPF misses out on the 2.5% risk free interest that "government" gives your CPF. -every dollar you take out of CPF later comes back to bite you as "accrued interest". In street talk, you will lugi at 2.5% a year.
Putting back your CPF used for property should be done as soon as you comfortably can because it's a solution that keeps giving back to you. Putting cash to SA is the next better solution because it's a 4%pa improvement for every dollar, and a one time tax reduction.