The Singapore IRAS GST API (Application Programming Interface) is a system provided by the Inland Revenue Authority of Singapore (IRAS) that enables businesses to integrate their accounting software with the IRAS e-filing system for Goods and Services Tax (GST) returns. The API allows businesses to automate the process of submitting GST returns and helps to reduce the manual effort and time required to file returns.

The IRAS GST API is designed for businesses that need to file quarterly GST returns and provides a secure and efficient way of transmitting data between the business's accounting software and the IRAS e-filing system. The API allows businesses to access IRAS e-filing services directly from their accounting software, making the process of submitting GST returns faster and more accurate.

The API also provides businesses with a secure and reliable way of transmitting sensitive financial data, such as GST returns, to the IRAS, reducing the risk of data loss. Businesses that use the IRAS GST API are able to save time and reduce the manual effort involved in filing GST returns, making the process more efficient and streamlined.