Singapore GST Calculator

1. 01Choose a modeAdd GST starts from a net price. Remove GST starts from a gross, GST-inclusive price. GST amount shows the tax on a net price.
2. 02Enter the amount and rateType the amount. The rate is set to the 9% Singapore standard rate; change it only for a zero-rated or exempt supply.
3. 03Read net, GST, and grossAll three figures appear together, so you can copy the net, the GST, or the gross price.

• Add 9% GSTA net price of 100 SGD becomes 100 × 1.09 = 109 SGD, with 9 SGD of GST.
• Remove GST from a priceA gross price of 109 SGD contains 109 ÷ 1.09 = 100 SGD net, so the GST is 9 SGD.
• GST amount onlyOn a net price of 500 SGD, the GST is 500 × 0.09 = 45 SGD.

The standard rate is 9%, raised from 8% on 1 January 2024. To add GST, multiply the net amount by 1.09. To take GST out of a gross amount, divide by 1.09 to get the net, then subtract to get the GST. Zero-rated and exempt supplies are treated differently, so this tool applies a single standard rate.

The 9% standard rate is set by the Inland Revenue Authority of Singapore (IRAS). Last checked 6 July 2026. This tool is an educational estimate and is not affiliated with, endorsed by, or approved by IRAS or any government body. It covers the standard rate only. Rates and rules can change. For a business or tax decision, check the official source or a qualified tax professional.

What is the GST rate in Singapore?

The standard GST rate in Singapore is 9%, in effect since 1 January 2024 (raised from 8%), set by IRAS.

How do I add 9% GST to a price?

Multiply the net price by 1.09. For example, 100 SGD becomes 109 SGD, with 9 SGD of GST.

How do I remove GST from a gross price?

Divide the gross price by 1.09 to get the net price, then subtract to get the GST. For 109 SGD, the net is 100 SGD and the GST is 9 SGD.

Was the GST rate 7% or 8% before?

Singapore raised GST from 7% to 8% on 1 January 2023, then from 8% to 9% on 1 January 2024. Use the rate that applied on the date of the supply.

Is this official tax advice?

No. It is an educational estimate and is not affiliated with IRAS. For a business or tax decision, use the official source or a qualified professional.

Is my data stored?

No. The calculation runs in your browser. Nothing you enter is uploaded, saved, or shared.