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Calculators
Free

GST / VAT / Sales Tax Calculator

Pick a country preset, change the rate if it has moved since we wrote this, and see the formula and result. Estimates only. Verify with your tax authority before relying on it.

Files are processed in your browser. Nothing is uploaded to our servers.

Rates are pre-filled for convenience but always editable. Verify the current rate with your country's tax authority. Calculator results are estimates only, not professional advice.

Result
Net (excl. GST)SGD 100.00
GST (9%)SGD 9.00
Gross (incl. tax)SGD 109.00
gross = amount × (1 + rate)

Add or remove GST, VAT, or sales tax for 10 countries, or enter your own rate. Free, and runs entirely in your browser.

Frequently asked questions

Which countries and taxes are supported?
Singapore, UK, Australia, New Zealand, Ireland, and the UAE come with their standard rate preset; you can also set any custom rate for the US, Canada, Hong Kong, Qatar, or anywhere else.
Can it remove tax from a tax-inclusive price?
Yes. Switch to remove mode to back out the tax from a gross amount and see the net and tax portions.
Is it free?
Yes, free with no sign-up.
Does it send my numbers anywhere?
No. The calculation runs in your browser.