Saying this is a loophole is like saying transferring all your money from OA to SA to earn more interest is a loophole. Eitherway, CPF lose nothing from this "loophole".
There is a difference
Lemme explain.
GIC will be ok with the govt promoting OA to SA transfers to say a 30 yo guy because:
1) the amounts in SA are locked down till 55. With no possibility of withdrawal, GIC can use these funds to generate higher returns over a longer time horizon of 25 years. Also with less CPF funds in OA, GIC can keep less funds in shorter term lower yielding assets. CPF OA is a bit like on demand savings account since anyone can use it to pay for housing, education etc.
So OA to SA transfers are not a loophole. it is a scheme that is advantageous to GIC and just happen to be also good for common man...
2) At 55, it is extremely disadvantageous to GIC to have thousands of folks doing shielding because the amount of funds they get is the same ie FRS x no of 55 year olds with that money. BUT the amount of interest they have to pay out 1.5% higher interest to balance in SA.... At 55, OA and SA are no longer locked down and hence they would want as small a balance in SA as possible. RA can give 4, 5 or even 6% does not matter since it is gonna lock down for another 30 years easily to 85....
so in short, shielding is indeed a loophole.
Just like HDB decoupling which caused the govt to be unable to extract 7% ABSD from the additional pre property purchased, the loophole will be closed within a few years if not months...
