Malaysia Income Tax 2025 Due Date. The year of assessment (ya) is the year coinciding with the calendar year, for example, the ya 2025 is the year ending 31 december 2025. The due date for submission of income tax returns is:

Paying income tax due accordingly. The year of assessment (ya) is the year coinciding with the calendar year, for example, the ya 2025 is the year ending 31 december 2025.