GST Registration — When & How

You must register for GST in Singapore if:

• Your taxable turnover exceeded S$1 million in the past 12 months, or

• You expect it to exceed S$1 million in the next 12 months.

Voluntary registration is also possible if your turnover is below the threshold, but you must comply with all GST filing obligations once registered.

Official Reference: IRAS GST Registration