After applying for GST（Goods & Services Tax）, a Singapore company needs to make GST declaration on a quarterly basis. For example, the customer's closing date is December 31, so the first quarter from January to March, the second quarter from April to June, the third quarter from July to September, and the fourth quarter from October to December are respectively April, July, October and January of the following year. Generally, the time for Singapore companies to declare GST is to complete the GST declaration within one month after the end of the quarter, and the current tax rate of Singapore companies GST is 9%.

In the GST declaration of Singapore companies, customers need to provide the company's documents, GST application documents, contracts and invoices of the quarter, which are used to review and count the data of the quarter's GST imports and exports, and then make the GST declaration according to the statistical data.