Singapore GST Calculator & Rate
Singapore GST calculator
GST = 100.00 × 9% = 9.00; gross = 100.00 + 9.00 = 109.00
How much is GST in Singapore?
MOF: GST was 3% when introduced on 1 April 1994 and rose to 8% in 2023 and 9% in 2024. IRAS: the current rate is 9%; exported goods and international services are zero-rated.
Singapore GST worked examples
| Rate | Tax share of a gross price | Net 100 → tax / gross | Net 1,000 → tax / gross | Gross 100 → tax / net | Gross 1,000 → tax / net |
|---|---|---|---|---|---|
| 9% standard | 9/109 ≈ 8.2569% | 9.00 / 109.00 | 90.00 / 1,090.00 | 8.26 / 91.74 | 82.57 / 917.43 |
About this page
Worked in whole cents: the tax is rounded to the nearest cent (half a cent goes up) and the other amount is the difference, so the boxes always add up. From a gross amount the tax is gross × rate ÷ (100 + rate); from a typed tax amount the net is worked back and your tax amount stays as typed. Your tax authority may set its own rounding rules for invoices.
Add GST: gross = net × (1 + rate ÷ 100). Extract GST: tax = gross × rate ÷ (100 + rate), and net = gross − tax.
Not tax advice. Rates were last verified on the date shown; confirm with the linked official source before invoicing.