How to determine which addition/deduction attract CPF contribution?

To determine which addition/deduction attracts CPF is to liaise with CPF Board.
Below is the link for your reference or contact CPF Board for any inquiries:

https://www.cpf.gov.sg/content/dam/web/employer/faq/employer-obligations/documents/Which_allowances_and_payments_attract_CPF_contributions.pdf

Product Version: SMEPayroll^TM Version 11