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.
Announcement:
Beware of Impersonation Scams
Government officials will NEVER do these things over a phone call:
1. Ask you to transfer money;
2. Ask you to disclose bank log-in details;
3. Ask you to install mobile apps from unofficial app stores;
4. Transfer your call to Police.
Call the 24/7 ScamShield Helpline at 1799 if you are unsure whether something is a scam.
[NOTICE]
Please be informed that there will be an extended maintenance downtime period on 14 December 2025, from 02:00 AM to 17:00 PM. During this period, all API services will be unavailable. We apologise for any inconvenience this may cause. For further enquiry, kindly reach out to Digital_Partnerships@iras.gov.sg.
Welcome to the IRAS API Marketplace!
The IRAS API Marketplace combines industry expertise with innovative technology to create and optimise tax-related services. This is our new community dedicated to you, the Developer. We believe that developer experience is key to the adoption and success of the API initiatives, and we would like to work with you. Here you will find the sample codes and community Q&A forums to help you work effectively. Join our community of developers to create APIs that enables businesses and organisations to integrate and co-create with IRAS.
Sign up as a Developer today!
We look forward to developing more industry-relevant APIs, together with like-minded software developers, platform providers/intermediaries (e.g. online marketplace), and partners. Please consider visiting our collaboration page.
For API onboarding and account matters, please contact the Digital Partnership Team at digital_partnerships@iras.gov.sg.
For technical queries/support on existing APIs, please contact the API Support Team at api_support@iras.gov.sg.
Co-Create with IRAS
Have a clear and amazing idea of how a new API could be useful for your organisation and taxpayers in general? What is in your API wish list or what new features do you wish to see? Submit your use case to us @ https://go.gov.sg/iras-apiusecase and the IRAS Digital Partnerships team will study the details for a potential collaboration together.
System Maintenance
Weekly Maintenance Hours (Singapore Time): Every Wednesday 2:00 AM – 6:00 AM | Every Sunday 2:00 AM - 8:30 AM
Introducing IRAS API Roadmap 2.0
View the newly refreshed API Roadmap 2.0 to plan your next product integration with us!
Check out our CorpPass and Callback URL Guide!
Do you know that many of our APIs are used with CorpPass? IRAS CorpPass API leverages on OAuth 2.0 which can be a challenge to integrate and test with your software. Therefore, we have prepared a guide to help you get started. We have also included a video walkthrough to help you test the CorpPass API with Postman. Look out for it in the guide!
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Inland Revenue Authority of Singapore
The IRAS API Marketplace is a comprehensive platform that provides developers with essential tools, documentation and support to integrate IRAS tax services into their applications through APIs.