Starting Nov 2024, you may choose to opt-in via CPF website. There will be no deadline to opt-in however do note that once you opted-in, the process is irreversible. Once opt-in is successful, you will receive a confirmation email and SMS from the CPF board.
If you opt in on or before the 15th of a month, the increased contributions will start from next month.
If you opt in after the 15th of a month, the increased contributions will start two months later.
For example, if a platform worker opts in on 15 April, the increased contributions will apply from 1 May. However, if a platform worker opts in on 16 April, the increased contributions will apply from 1 June.