Here's an update on the upcoming changes to the CPF system, effective 1 July 2011. CPF Minimum Sum From 1 July 2011, the prevailing MS will be revised to $131,000, up from $123,000. Members who can set aside the MS fully in cash can apply to commence their monthly payouts of $1,170 when they reach their draw down age. Medisave Minimum Sum The Medisave Minimum Sum (MMS) will be raised to $36,000 from $34,500. Members will be able to withdraw their Medisave savings in excess of the MMS at or after age 55.