GST Calculator
Add, remove or reverse GST for India, Australia, New Zealand, Singapore and Canada. The rates are current for 2026 and the working is shown, so you can see exactly how the GST was found.
Read the guide: How to Calculate GST (Add It or Take It Off a Total)Price & GST rate
Gross (with GST)
₹1,180.00
₹180.00 GST at 18%
- Net
- ₹1,000.00
- GST
- ₹180.00
- Gross
- ₹1,180.00
GST 2.0 (22 Sep 2025): main slabs are 0/5/18/40%. The old 12% & 28% slabs were removed — enter them as a custom rate for historical invoices.
How it works
- 1
Pick your country
Choose a country to load its current GST rate (or province rate for Canada).
- 2
Add or remove
Add GST to a net price, or remove it from a GST-inclusive total.
- 3
See the working
The net, GST and gross appear with the arithmetic, like dividing an Australian total by 11.
Instant & 100% private — nothing is uploaded
Every calculation runs locally in your browser. The income, balances and goals you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.
Frequently asked questions
- How do I remove GST from a total?
- Divide the GST-inclusive total by 1 plus the rate, do not just subtract the percentage. At 10% in Australia, $110 ÷ 1.1 = $100 net plus $10 GST. Subtracting 10% would wrongly give $99.
- What are India’s current GST rates?
- Since GST 2.0 took effect on 22 September 2025, the main slabs are 0%, 5%, 18% and 40%; the old 12% and 28% slabs were removed. Gold and jewellery stay at 3%. Enter 12% or 28% as a custom rate for older invoices.
- Why divide by 11 to find GST in Australia?
- Because GST is one eleventh of a GST-inclusive price at a 10% rate, not one tenth. $110 ÷ 11 = $10. New Zealand uses the equivalent 3/23 fraction at 15%.
- Which Canadian rate do I use?
- Charge the customer’s province rate. Rates run from 5% in Alberta to 15% in New Brunswick, Newfoundland and PEI. Ontario is 13% HST and Nova Scotia dropped to 14% on 1 April 2025.
- Is my data sent anywhere?
- No. Every calculation runs in your browser. Nothing you type is uploaded, logged or stored, and the numbers reset when you close the tab.
Important
For information and planning only — not financial, tax or legal advice. These figures are estimates; rates, fees and rules vary, so confirm anything that affects a real decision with a qualified professional or the official source.
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