You have tons of cash on hand in the outlined scenario: your SA and OA. And even a little RA. All earning 2.5% interest and 4.0+% interest, all available for immediate withdrawal in any amount.
Uh, because that cash was earning 1% interest maybe, then it starts earning 4.0+% interest (to protect a pension) and you have hundreds of thousands (or more) in your OA+SA immediately available for withdrawal in any amount, also earning 2.5% and 4.0% interest? This is terrific!
Remember, all SA+OA (and a little RA usually) turns into liquid cash from age 55, assuming you’ve funded your RA at least decently. That IS cash on hand, weirdly high yielding cash on hand especially for government guaranteed accounts.
THEMIKOS is presenting a very sensible, logical idea here, especially for those of you who are dragging along way too much cash in your early 50s (or longer) at, what, 1% interest? You’ve got to fund your RA decently somehow, so why NOT end up with gobs of OA+SA (and a little RA) on demand cash? The run up to age 55 is a once in a lifetime opportunity to inject cash into RA such that you dramatically boost residual SA and OA. Then you can have your cake and eat it, too.
With respect to liquidity, want to know the best way to maximize liquidity in Singapore? Don’t buy a house, especially not a HDB leasehold. Does anyone want to recommend selling your home at about age 45 in order to maximize liquidity because the subsequent years are “scary”? Because if you care so much about liquidity, that’s what you must do. To be clear, the scenario THEMIKOS outlines at most reduces liquidity by the difference between the FRS and BRS (and only briefly since higher interest rapidly closes that amount), which for most people doesn’t even begin to compare to the amount of liquidity you can get by avoiding home ownership.