Singapore GST Calculator

Add GST to a net price or work out the GST inside a GST-inclusive total.

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How to use the Singapore GST Calculator

Enter the amount.
Pick the GST rate.
Choose whether to add GST to a net price or remove it from a GST-inclusive price.

Formula used

Add GST: GST = Net × rate, Gross = Net × (1 + rate)

Remove GST: Net = Gross ÷ (1 + rate), GST = Gross − Net

Singapore GST Calculator — FAQs

How do I calculate 9% GST in Singapore?▾

Multiply the price by 0.09 for the GST, or by 1.09 for the total. S$1,000 + 9% = S$1,090.

How do I remove GST from a price in Singapore?▾

Multiply the GST-inclusive price by 9/109 to get the GST, or divide by 1.09 for the net price. S$1,090 × 9/109 = S$90.

When must a business register for GST in Singapore?▾

When taxable supplies exceed S$1 million in the past 12 months, or are expected to in the next 12 months.

Must prices be shown including GST?▾

Yes. GST-registered businesses must show GST-inclusive prices to consumers.

How to use the Singapore GST Calculator

Formula used

Singapore GST Calculator — FAQs

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