GST Calculator
Calculate Goods and Services Tax (GST) for Australia, New Zealand, Canada, India, Singapore and other GST countries. Add GST to a net (ex-GST) price, or remove GST from a GST-inclusive amount to find the original price. Free, accurate, and instant.
Formula
GST Amount = Net Amount × (GST Rate ÷ 100) Gross Amount = Net Amount + GST Amount Net Amount = Gross Amount ÷ (1 + GST Rate ÷ 100)
GST works identically to VAT: to add GST, multiply the net amount by the GST rate and add it to the net. To remove (extract) GST from an inclusive price, divide by (1 + GST rate as decimal). For Australia's 10% GST, that means dividing by 1.10.
Worked Examples
Frequently Asked Questions
What is GST?▾
GST (Goods and Services Tax) is a value-added tax on most goods and services sold domestically. It is equivalent to VAT in the UK and EU. Countries using GST include Australia (10%), New Zealand (15%), Canada (5% federal), India (5–28%), and Singapore (9%).
What is the GST rate in Australia?▾
Australia's standard GST rate is 10%, introduced in July 2000. It applies to most goods and services. Some items are GST-free, including most fresh food, medical services, and educational courses.
What is the GST rate in New Zealand?▾
New Zealand's GST rate is 15%. Unlike Australia, New Zealand has very few exemptions — GST applies to almost all goods and services including food.
What is the GST rate in Canada?▾
Canada's federal GST rate is 5%. Several provinces also charge a provincial sales tax (PST) or a Harmonized Sales Tax (HST) that combines federal and provincial rates. For example, Ontario's HST is 13% (5% federal + 8% provincial).
How do I remove GST from a price that includes GST?▾
Divide the GST-inclusive price by (1 + GST rate as decimal). For Australia's 10%: divide by 1.10. For New Zealand's 15%: divide by 1.15. For example, A$110 ÷ 1.10 = A$100 ex-GST.
Is GST the same as VAT?▾
Yes — GST and VAT are economically identical taxes. Both are collected at each stage of the supply chain, and the end consumer bears the full cost. The name differs by country. The UK and EU use 'VAT'; Australia, NZ, Canada, and India use 'GST'.
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All calculations are for informational purposes only. They should not replace professional financial, tax, or legal advice. Always consult a qualified professional for decisions affecting your finances or business.