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GST Calculator

GST Calculator for Singapore

Use our simple and accurate Singapore GST Calculator to quickly compute GST-inclusive or exclusive amounts. Perfect for businesses and individuals, this tool helps you effortlessly determine your GST obligations with just a few clicks.

GST Calculator

Enter the initial price to calculate both GST-inclusive and GST-exclusive amounts.

Price

GST rate

Note that the current GST rate in Singapore is 9%

Add GST

Price before GSTS$0

GST tax amount+S$0

GST inclusive priceS$0

Subtract GST

Price including GSTS$0

GST tax amount-S$0

GST exclusive priceS$0

What is Goods and Services Tax (GST)?

Goods and Services Tax (GST) is a consumption tax applied to the sale of goods and services in Singapore. Currently set at 9%, GST is charged at every stage of the supply chain, from production to final sale to consumers. Businesses registered for GST must charge and collect GST from their customers and pay the tax to the Inland Revenue Authority of Singapore (IRAS).

GST ensures that the tax burden is shared by consumers and businesses, making it an essential part of the country’s tax framework. For consumers, GST is embedded in the price of goods and services, while businesses act as intermediaries in collecting the tax.

How it works

How to calculate GST?

GST can be calculated in two main ways: GST-inclusive and GST-exclusive. Understanding the difference between these two methods helps in determining the correct price breakdown.

GST-inclusive calculation

When a price is GST-inclusive, it means the GST has already been added to the total amount. If you know the GST-inclusive price and want to find the original price before GST, you can use the following formula:

Original price (excluding GST) = GST-inclusive price ÷ (1 + GST rate)

For example, if an item costs S$ 109 (GST-inclusive) and the GST rate is 9%, the original price excluding GST would be:

S$ 109 ÷ 1.09 = S$ 100

GST-exclusive calculation

When a price is GST-exclusive, GST needs to be added to the original price. To calculate the GST amount and the final price, you can use this formula:

Final price (including GST) = Original price × (1 + GST rate)

For instance, if an item costs S$ 100 (GST-exclusive) and the GST rate is 9%, the final price including GST would be:

S$ 100 × 1.09 = S$ 109

Our GST Calculator allows you to seamlessly calculate both GST-inclusive and GST-exclusive prices, providing you with accurate results based on the input values. Simply enter the original price, and the tool will generate the corresponding amounts.