Does the extra CPF interest from my Ordinary Account stay in my OA?

OA Interest Retention and Liquidity

The interest earned on your Ordinary Account (OA) generally remains in your OA, maintaining its high liquidity, unless you actively decide to transfer it to your Retirement Account (RA).

Interest Rates and Liquidity

• OA Interest: Funds in your OA earn a base interest rate of 2.5% per annum (CPF Board). Crucially, money in the OA is FULLY LIQUID after age 55, meaning you can withdraw it anytime (subject to withdrawal rules).
• RA Interest: Funds transferred to the RA earn a higher interest rate of 4% per annum. However, this transfer is a PERMANENT, one-way transfer and the funds are locked in to provide monthly payouts via CPF LIFE starting from age 65.

Decision Point at Age 55 (SA Closure)

When you turn 55, your Special Account (SA) closes. Money in your SA flows to your RA up to the Full Retirement Sum (FRS, which is $213,000 in 2025). Any excess SA funds flow to your OA, earning 1.5% less than the RA rate.

After age 55, if you have excess funds in your OA, you face a choice regarding future interest:

• Keep in OA: Earn 2.5% interest, retaining full liquidity for withdrawal.
• Transfer to RA: Earn 4% interest, but the amount transferred is permanently locked for CPF LIFE payouts (up to the Enhanced Retirement Sum (ERS) of $426,000 in 2025).

Therefore, the extra interest you earn on OA funds stays in the OA, retaining its liquidity, unless you voluntarily transfer it to the RA to earn the higher 4% rate, thereby forfeiting liquidity (CPF Board).

Note on Investment: Interest earned on both OA and RA is credited monthly and compounds. For OA funds, the interest stays in the OA unless you move the principal balance to the RA.