Now that standard chartered jumpstart account has a drop in interest rate, is it wise to close that account and put in Singlife? Any ideas how to close SC account?

No need to close since no charges for leaving it at $0. U can go down to the branch

I personally think I shouldnt lose sleep on this. If you do the math, even when you max out $20,000 in SC Jumpstart, a drop of 1.6% from 2% to 0.4% means you're losing $320/year. If I cut spending of $30 a month, that's already more than what I will "miss out" from the reduced interest rates. I think interest rates don't matter too much if your assets are below $50,000. Interest rates are never constant, but you can change your lifestyle. And this might even be easier than spending many hours researching the best savings interest rate. More benefit less effort. Hahaha sorry it wasn't exactly the answer you were looking for.