GST calculator figures out the price of a product, including Goods and Service Tax.
GST calculator
Navigating the complexities of value-added taxes across different regions becomes straightforward with a specialized calculator designed for speed and accuracy. It provides instant results for several major jurisdictions, including India's multi-tiered system and the flat rates used in Australia, Canada, New Zealand, and Singapore. Users can determine either the gross amount including tax or...
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Calculate goods and services tax for India (5/12/18/28%), Australia (10%), Canada (5%), NZ (15%), and Singapore (9%).
Side by side
GST calculator options compared
| Tool | Best for | Strengths | Limitations |
|---|---|---|---|
| Omni Calculator omnicalculator.com | Users who want to understand GST rules |
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| RapidTables rapidtables.com | Quick GST calculations for specific countries |
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| Financial Toolset financialtoolset.com | International transactions involving India, Australia, Canada, New Zealand, or S |
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Buyer's guide
How to choose a gst calculator
When picking a GST calculator, first decide which country's tax rate you need — Australia uses 10%, India has multiple slabs (5/12/18/28%), and Singapore is 9%. Then look for a tool that lets you both add GST to a base price and extract it from a total, since users often need to verify invoices in both directions. If you are working across several countries, choose one that lists those specific rates rather than a generic calculator that may not match your region's rules.
Questions
GST calculator FAQ
- How do I calculate GST if I only know the total price including tax?
- 1-3 sentence answer grounded in the material
- Can I use one GST calculator for both Australia and India?
- 1-3 sentence answer grounded in the material
- What is the difference between GST and VAT in these calculators?
- 1-3 sentence answer grounded in the material
- Why does the GST amount differ when I calculate from the net price versus extracting it from the gross price?
- 1-3 sentence answer grounded in the material
- Do these tools work for business invoicing or just personal use?
- 1-3 sentence answer grounded in the material


