Since 1999 till present, OA, SA and RA interest rates have been consistent at 2.5%, 4% and 4% respectively. Since 2002 till present, MA interest rate has been consistent at 4%.
| Account Type | Introduced in |
| Special Account (SA) | July 1977 |
| MediSave Account (MA) | April 1984 |
| Retirement Account (RA) | January 1987 |
| Period | CPF interest |
| 1955 to 1976 | Interest was credited and compounded annually |
| 1977 to 1985 | Interest was credited quarterly and compounded annually |
| 1986 to present | Interest was computed monthly and compounded and credited annually |
Extra and Additional Extra interest
From 1 Jan 2008, an extra 1% interest is paid on the first $60,000 of a member’s combined balances, of which up to $20,000 comes from OA.
From 1 Jan 2016, for CPF members aged 55 and above, an additional extra 1% interest is paid on the first $30,000 of a member’s combined balances, of which up to $20,000 comes from OA.
Determination of Interest Rates OA, SA, MA and RA
From 1 Jul 1995, the Special and Retirement Accounts earned additional interest of 1.25% points above the CPF interest rate paid for Ordinary and Medisave Accounts.
From 1 Jul 1998, the Special and Retirement Accounts earned additional interest of 1.5% points above the CPF interest rate paid for Ordinary and Medisave Accounts.
From 1 Oct 2001, the Medisave, Special and Retirement Accounts earned additional interest of 1.5% points above the CPF interest rate paid for Ordinary Account.
From 1 Jan 2008, interest on savings in the Special, Medisave and Retirement Accounts is pegged to the 12-month average yield of the 10-year Singapore Government Securities (10YSGS) plus 1%.
From 1 January 2010, RA savings are invested in SSGS which earn a fixed coupon equal to the 12-month average yield of the 10YSGS plus 1% at the first point of issuance in the year. The interest rate to be applied to the RA will be the weighted average interest of the entire portfolio of these SSGS, and adjusted yearly in January.
Theory of Constraints 