Add or remove GST from any amount — supports multiple countries and India's CGST/SGST/IGST split.
Our GST Calculator lets you add or remove Goods and Services Tax from any amount instantly, right in your browser — completely free, with no sign-up. It supports common GST rates across Pakistan, India, Australia, Canada, New Zealand, and Singapore, plus fully custom rates, and includes a dedicated mode for India's CGST/SGST/IGST split.
These are the two directions you'll ever need:
| Country | Standard Rate |
|---|---|
| Pakistan | 18% (Sales Tax / GST, varies by good/service) |
| India | 5% / 12% / 18% / 28% (slab-based) |
| Australia | 10% |
| Canada | 5% federal GST (plus provincial PST/HST, varies by province) |
| New Zealand | 15% |
| Singapore | 9% |
Rates change periodically — always confirm the current rate with your local tax authority before filing.
India splits GST differently depending on whether a transaction happens within one state or across states:
Use the "India: CGST / SGST Split" tab above to calculate either scenario automatically.
Yes, completely free with no sign-up required. Calculate as many amounts as you need.
Yes, select "Custom" from the country dropdown, or simply overwrite the rate field with any percentage you need — the calculation updates instantly.
Yes — our Pakistan Tax Calculator includes a dedicated GST tool. This Business Tools version covers multiple countries and adds India's CGST/SGST/IGST split, useful if you need more than just Pakistan's rate.
Compare the seller's registered state with the buyer's delivery location. Same state means intra-state (CGST+SGST); different states mean inter-state (IGST).