Definition
Finance and Economy Inland Revenue Authority of Singapore
The year in which income is assessed to tax in Singapore, generally using income from the preceding basis period.
Example: Income earned during the 2025 basis period is generally assessed in YA 2026.
Also known as: YA, tax Year of Assessment
Context: Use the official order Year of Assessment and the abbreviation YA; assessment year and AY may mean something else in workplace or education contexts.
Source checked for Year of Assessment (opens in a new tab) Checked 2026-08-11