GST Registration Checker 2027
Do you need to register for GST in 2027? Enter your figures to test both IRAS views and see when to apply and when registration starts. The threshold is more than S$1 million of taxable turnover.
1. Taxable turnover for the calendar year
2. The next 12 months
3. Optional
What counts as taxable turnover?
Count standard-rated and zero-rated supplies made in Singapore in the course of your business, such as local sales and exports. Leave out exempt supplies (for example most financial services and residential property), out-of-scope supplies, and sales of capital assets such as machinery, equipment, office buildings and furniture.
A sole proprietor adds together all their sole proprietorships and other business income. A company counts itself plus any sole proprietorships it owns. Partnerships with the same partners are counted together.
Enter your figures to see the result.
The free GST Registration Checker kit does the same check from your own records, month by month, and drafts the notes for you.
Common questions
When must a Singapore business register for GST?
When its taxable turnover is more than S$1 million at the end of a calendar year (the retrospective view), or when it can reasonably expect taxable turnover of more than S$1 million in the next 12 months (the prospective view).
What counts towards the S$1 million?
The value of taxable supplies made in Singapore in the course of business: standard-rated and zero-rated supplies. Exempt supplies, out-of-scope supplies and sales of capital assets such as machinery, equipment, office buildings and furniture are left out.
My 2026 taxable turnover is above S$1 million. When do I register?
Apply between 1 and 30 January 2027. Your registration takes effect on 1 March 2027.
When does registration start on the prospective view?
Apply within 30 days of the date of your forecast. Where liability arises on or after 1 July 2025, you are registered 2 months from the date of the forecast.
Based on IRAS, Do I need to register for GST, checked 2 November 2026. Covers compulsory registration only, not the reverse charge or overseas vendor regimes. A working aid, not tax advice. Nothing you type leaves your browser.