btw, anyone heard of POSB SAYE Account? what is the opinion of the POSB SAYE Account? is it a good saving tools?
It is an auto accumulating 0.25% pa interest rate account (min 1000, otherwise 0.05%) with a 2% pa bonus every year for two years, i.e. about 2.25%pa for two years. Without the bonus, it essentially turns into a 0.05-0.25% savings account after that.
It is a zero effort saving tool with 2.25% interest rate with the only prereq of putting $ in every month compared to other 'action' checking accounts like UOB one/DBS multiplier. If you already have a large lump sum or can get better interest than that, it would actually be worse off because the amortised interest would usually be less.
Moving money out of it is disastrous, as all accumulated interest not yet given for the year would be lost and the amount used to calculate bonus interest resets to 0, i.e. all the money stuck in there will remain 0.25%pa until you finally remove it. I accidentally moved money out of it, and lost 9 months of interest and POSB can't do **** about it. I'm still keeping the $ in there because I still get an additional 2%pa for the BYOB scheme.
It is probably a not a good idea to keep your emergency fund in there (same problem as the citi maxigain) because taking $ out will kill the interest rate. Also, the bonus is only for 2 years, so you'll have to chase interest rates elsewhere again (Shiny said he does not recommend doing things like this because you can keep it simple with SSBs, but some of us are ok with it).
TLDR: do the actual math for your own financial situation, it might be better or worse.