access to more investment opportunities, e.g. SG REITs, Singapore stocks through brokerage e.g. FSM SG
US and foreign stocks and ETF investment opportunities, through brokerage IBKR, Tradestation global, Futu, Tiger etc.

tadashi987You forget to add protection against decreasing RM since you can protect now your buying power over time rather than keeping money in Malaysia. What this means is your hard earned money don't get devalued so fast Vs if one were to keep in Malaysia only.
No tax from both sg and Malaysia. Malaydia and sg does not have tax on capital gains or divisneds. But have to declare to lhdn. Sg bank account basically offer you zero interest. It's not a place for you to keep cash or FD. It's just make your life easier and cheaper for invesment.