Your MediSave contributions are computed based on the annual net trade income1 (NTI) from all your trades. If your total NTI from all your trades exceeds $6,000, you are required to make mandatory MediSave contributions.
You can refer to
these examples of how MediSave contributions are computed on multiple sources of NTI.
1Excludes net earnings from platform work (if any) declared to CPF Board by your platform operator(s) for work year 2025 onwards.