Is it possible for me to top up my mother's (60 years old) to hit BRS/FRS so that she receives CPF Life Payout once she hits 65 years old?

There are two possible scenarios. You can top up her CPF, or you and your bro can invest the 7k annually.

You already know that you get risk-free interest on the first $60k that's in her CPF account. You also get tax relief. It also takes the stress of having to invest yourselves.

However, if you are confident that you can invest that same annual 7k from both of you to get more than the CPF rates, also can. You can also get tax relief on parental allowance (assuming you haven't already claimed this).

Many ways to skin a cat. Don't forget CPF does have policy risk. We don't know how the policy will change regarding interest rates, withdrawal terms, etc. The money is locked in there. The biggest upside to CPF top-up is probably the tax relief.

Yes! It is a very good idea! Other than tax relief which is like giving effective returns of 7% (if your earn more than $40k), 11.5% (if u earn more than $80), higher the higher your tax bracket.

Your mum will be getting 6% guaranteed interest rate on the first $30k, and 5% on the next $30k. This guaranteed rates (riskfree) are no way available in the market.

Since she only has 10k, it will be a long way to hit the limit. It is the best riskfree way to save and get highest return for a steady flow of income in future. You can DELAY the payout age to 70 so as to let it grow longer and thus increasing future payout.