Calculate GST on any amount in Singapore, whether you need to add it to a price or find it inside a total.
Add GST on top of a price that does not yet include it.
Almost everything sold in Singapore is 9 percent. Zero-rated covers exports and international services. Exempt supplies, such as financial services and residential property, carry no GST.
Your taxable turnover over the last 12 months. We check it against the S$1 million point where GST registration becomes compulsory.
How the GST is worked out on your amount.
| Price before GST | 1,000.00 |
| GST at 9%1,000 × 0.09 | + 90.00 |
| Total including GST | 1,090.00 |
This is an estimate based on the 9 percent GST rate and the S$1 million registration threshold. Whether a supply is standard-rated, zero-rated, exempt, or out of scope depends on the transaction and the rules in force under the Goods and Services Tax Act. Confirm your treatment with a tax professional before invoicing.
Goods and Services Tax (GST) is Singapore’s 9 percent consumption tax on the supply of goods and services and on imports. It is the local name for what other countries call VAT, and the two are functionally identical. GST is an indirect tax: the business adds it to the price and the buyer ultimately pays it, while the business collects it for the Inland Revenue Authority of Singapore (IRAS).
GST-registered businesses charge GST on their sales (output tax) and claim back the GST they pay on their purchases (input tax), remitting the net difference to IRAS through a quarterly GST F5 return.
The rate has been 9 percent since 1 January 2024, the second step of a two-stage increase from 7 percent. Budget 2026 confirmed no further change.
There are two everyday calculations, and the calculator above does both. Use the first when you have a price and need to add GST, and the second when you have a GST-inclusive total and need to find the GST inside it.
Registration with IRAS is compulsory once your taxable turnover exceeds S$1 million, and there are two tests.
Retrospective. If your taxable turnover for the past calendar year exceeded S$1 million, you must apply by 30 January of the following year, with registration effective 1 March.
Prospective. If at any point you reasonably expect turnover to exceed S$1 million in the next 12 months, for instance after signing a major contract, you must apply within 30 days of forming that view.
Below S$1 million you may register voluntarily, mainly to claim input tax, which commits you to staying registered for at least two years. Separately, foreign businesses selling digital services or low-value goods to Singapore consumers can trigger Overseas Vendor Registration once they pass S$1 million in global turnover and S$100,000 in Singapore sales.
Crossing the S$1 million line, or registering early voluntarily? Our Singapore team handles GST registration with IRAS, InvoiceNow setup, and your quarterly GST F5 returns.
The four treatments under the GST Act, summarised.
| Treatment | Applies to |
|---|---|
| 9% | Most goods and services supplied in Singapore, and imports |
| 0% | Exports of goods and international services |
| Exempt | Financial services, residential property, and investment precious metals |
| Out of scope | Sales outside the GST system, such as third-country sales |
What businesses ask before they register.
The standard rate is 9 percent since 1 January 2024. Exports and international services are zero-rated, and a separate group of supplies is exempt.
When your taxable turnover for the past calendar year exceeded S$1 million (the retrospective test) or you reasonably expect it to exceed S$1 million in the next 12 months (the prospective test).
Yes. A business below S$1 million can register voluntarily, mainly to claim input tax. This commits you to staying registered for at least two years.
Multiply the price by 1.09. A S$1,000 price becomes S$1,090, of which S$90 is GST.
Divide the total by 1.09 to get the price before GST. A S$1,090 total breaks down to S$1,000 net and S$90 GST.
The GST F5 is filed quarterly, due within one month of the end of each accounting period.
Zero-rated supplies (exports, international services) carry no GST but you can still claim input tax on related costs. Exempt supplies (financial services, residential property) carry no GST, and you cannot claim related input tax.
Yes. Under Overseas Vendor Registration, foreign businesses selling digital services or low-value goods to Singapore consumers must register once they pass S$1 million in global turnover and S$100,000 in Singapore sales.
Setting up or registering for GST in Singapore? We handle company incorporation, GST registration with IRAS, the move to GST-compliant and InvoiceNow billing, and your quarterly GST F5 returns.