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GST calculator for Singapore

Goods and Services Tax (GST) is charged on most goods and services sold in Singapore. The rate is 9%.

Enter a price and say whether it already includes GST. You get the price before GST, the GST and the full price.

How it's calculated

To add GST, multiply the price before GST by 1.09.
To take GST out of a price that already includes it, divide the price by 1.09. What is left is the GST.
Each amount is rounded to the cent.

An example

A $109 bill that includes GST has $9 of GST, so the price before GST is $100.

Frequently asked questions

What is the GST rate in Singapore?

The GST rate is 9%. It went from 7% to 8% on 1 January 2023 and to 9% on 1 January 2024.

Does every business charge GST?

Only GST-registered businesses charge GST. They charge it on their sales in Singapore unless the sale can be zero-rated or is exempt under the GST law.

How do I find the GST in a price that includes it?

Divide the price by 109 and multiply by 9. For a $54.50 bill, the GST is $4.50.

Key terms

GST: Goods and Services Tax, the consumption tax on goods and services in Singapore.
Zero-rated supply: A sale on which GST is charged at 0%, such as most exports.

The same calculation in other countries

Up-to-date official data

Data checked against the official source on 14 October 2026.

We check the official sources automatically, every day.

IRASCurrent GST rates

See all sources

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