A Singapore Government Agency Website How to Identify
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted website
Secure websites use HTTPS
Look for a lock (
) or https:// as an added precaution. Share sensitive information only on official, secure websites.
Description
This API allows software developers to incorporate within their software the
feature for authorised taxpayers to validate and submit Income Tax Return
(Form C-S) for a Year of Assessment to IRAS directly.