CPF’s 4% Interest Floor Extended to 2027: What It Means for Your Retirement Savings

Singapore CPF members will continue to enjoy a minimum 4% per annum interest rate on their Special, MediSave and Retirement Account savings through 31 December 2027, following a one-year extension announced by the CPF Board on 22 September 2026.

The extension applies from 1 January to 31 December 2027 and continues a policy that has been extended several times in recent years. The CPF Board said the measure provides members with greater certainty over their CPF returns amid an uncertain economic and interest-rate environment.

For the final quarter of 2026, the relevant CPF rates remain unchanged: the Ordinary Account (OA) earns 2.5%, while the Special, MediSave and Retirement Accounts (SMRA) earn 4% per annum. The HDB concessionary housing loan rate remains at 2.6%.

But what exactly is being extended, why does the 4% floor matter, and how does it affect CPF members planning for retirement?

What Is the 4% CPF Interest Floor?

CPF interest rates are not simply set at an arbitrary number each year. The rates for different CPF accounts are linked to specific market-based benchmarks, subject to minimum interest rates.

For the Special, MediSave and Retirement Accounts, the interest rate is calculated based on the 12-month average yield of 10-year Singapore Government Securities (10YSGS), plus 1 percentage point.

However, there is currently a 4% minimum interest rate, or floor.

This means that if the calculated rate falls below 4%, CPF members still receive 4% on their SMRA savings.

For the period from October to December 2026, the applicable calculation produced a rate of 3.06%. Because this was below the 4% floor, the actual SMRA interest rate remains at 4%.

The Government has now extended that floor for another year, meaning SMRA savings will continue to earn at least 4% per annum until 31 December 2027.

It is important to distinguish the 4% floor from the underlying CPF interest-rate formula. The formula itself has not been replaced. Instead, the Government continues to apply the minimum rate when the calculated rate falls below 4%.

Why Has the Government Extended It?

According to the CPF Board, the extension is intended to help members continue growing their retirement savings while providing certainty on CPF returns amid an uncertain economic and interest-rate environment.

The decision is particularly relevant because the underlying rate used to calculate SMRA interest is currently below 4%.

For the October to December 2026 quarter, the 12-month average yield of 10-year Singapore Government Securities was 2.06%. Adding the 1 percentage point component produced a calculated rate of 3.06%.

Without the current 4% floor, that formula would produce a lower interest rate than the 4% members are currently receiving.

The extension therefore means the minimum rate remains in place for another year rather than reverting to the lower calculated rate at the end of 2026.

What Are the CPF Interest Rates?

For 1 October to 31 December 2026, the CPF interest rates are:

*The Special Account is no longer maintained for members aged 55 and above following the January 2025 changes.

The OA has its own legislated minimum interest rate of 2.5%. Its rate is calculated using the three-month average of major local banks’ interest rates, subject to that minimum. For October to December 2026, the calculated average was below 2.5%, so the OA remains at its 2.5% floor.

The HDB concessionary housing loan rate is set at 0.1 percentage point above the OA interest rate, keeping it at 2.6% for the same quarter.

What Does 4% Mean in Dollar Terms?

A 4% annual interest rate means that, as a simple illustration, $10,000 earning 4% for a full year would generate approximately $400 in interest, assuming the balance remained unchanged for the entire year.

For $50,000, 4% would correspond to approximately $2,000 over a year.

For $100,000, 4% would be approximately $4,000.

These examples are only illustrations. Actual CPF interest is computed monthly, and interest is credited to members’ respective accounts by the following year and compounded annually. Contributions and withdrawals during the year can therefore affect the amount of interest earned.

This distinction matters when comparing a headline interest rate with the actual interest credited to an individual CPF account.

There Is Also Extra Interest on CPF Savings

The 4% floor is not the only interest-related feature CPF members should know about.

CPF members also receive extra interest on their combined CPF balances, subject to the applicable age and balance limits.

For members below age 55, the Government pays an additional 1% per annum on the first $60,000 of combined CPF balances, with the amount from the OA capped at $20,000.

For members aged 55 and above, the Government pays an additional 2% per annum on the first $30,000 of combined balances, and an additional 1% on the next $30,000. The OA portion remains capped at $20,000 for the calculation.

The extra interest earned on OA savings is credited to the member’s SA or RA, depending on age and the applicable CPF account structure.

Members aged 55 and above who participate in CPF LIFE can also continue to earn the extra interest on their combined CPF balances, including savings used for CPF LIFE.

This means the headline 4% rate should not automatically be interpreted as the maximum interest a CPF member can earn across all of their CPF balances. Depending on age and the amount held in the relevant accounts, some savings may receive additional interest.

What Happened to the Special Account After Age 55?

There is an important CPF change that can cause confusion when discussing the 4% SMRA floor.

The Special Account for members aged 55 and above was closed on 19 January 2025.

Before the change, members aged 55 and above could have both an SA and RA. The Government changed this structure to better align the interest rate with the nature of the savings.

When the SA was closed, SA savings were transferred to the RA up to the member’s Full Retirement Sum. Any remaining SA savings were transferred to the OA if the member had already set aside the required retirement amount.

As a result, when discussing the 4% rate for someone aged 55 or older today, the relevant retirement account is generally the RA rather than an existing SA.

The 4% floor nevertheless continues to cover Special, MediSave and Retirement Account monies under the CPF interest-rate framework.

Does the Extension Mean CPF Rates Will Definitely Stay at 4% Throughout 2027?

The announcement establishes a minimum rate, not necessarily a promise that the rate can never be higher.

The SMRA interest rate continues to be reviewed quarterly. The underlying formula remains the 12-month average yield of 10-year Singapore Government Securities plus 1 percentage point, subject to the 4% floor.

Therefore, the practical meaning of the extension is that SMRA savings will not earn less than 4% per annum through 31 December 2027 under the current floor arrangement.

If the calculated rate were to rise above 4%, the applicable rate would be determined according to the CPF framework. The 4% figure is the floor.

How Is CPF Money Invested?

Another important point is that CPF interest should not be viewed in exactly the same way as the return from a conventional market investment.

CPF savings are invested by the CPF Board in Special Singapore Government Securities (SSGS), which are issued and guaranteed by the Singapore Government. These are non-tradable bonds issued specifically to the CPF Board for the investment of CPF savings.

The arrangement supports the Government’s guarantee that CPF Board can pay members the money and interest due to them.

The CPF interest-rate framework is designed around market benchmarks while providing minimum rates for CPF savings.

This is also why the 4% floor is significant: it provides a level of certainty that the calculated SMRA rate by itself may not provide when market interest rates move lower.

What Does the Extension Mean for Retirement Planning?

For someone building retirement savings through CPF, the extension provides greater visibility into the interest-rate environment for the next year.

A CPF member can know that, under the current policy, SMRA savings will have a 4% per annum floor through the end of 2027.

However, this does not mean that every CPF member should automatically move money between accounts or make additional contributions simply because the floor has been extended.

CPF savings have specific purposes and rules. The decision to make voluntary top-ups or transfers depends on factors such as age, retirement needs, existing CPF balances, liquidity requirements, tax considerations and eligibility rules.

CPF savings intended for retirement also operate under different rules from savings that can be withdrawn for other purposes.

For members considering retirement planning decisions, the important takeaway is therefore not simply that “4% is available”, but where the money is held, what purpose it serves, and what rules apply to that account.

What Should CPF Members Take Away From the Announcement?

The latest extension provides several clear points for CPF members.

First, the 4% SMRA interest-rate floor has been extended from 1 January through 31 December 2027.

Second, the extension comes at a time when the underlying SMRA formula produces a rate below 4%. For the October to December 2026 quarter, the calculated rate is 3.06%, but the floor keeps the actual rate at 4%.

Third, the OA remains at its 2.5% minimum rate for October to December 2026, while the HDB concessionary housing loan rate remains 2.6%.

Fourth, CPF members continue to receive the applicable extra interest on their first $60,000 of combined CPF balances, with different additional-interest arrangements for members below 55 and those aged 55 and above.

Finally, the extension does not change the fundamental way CPF interest rates are determined. The SMRA rate continues to be linked to the 10-year Singapore Government Securities yield plus 1 percentage point, subject to the 4% floor.