GST (Goods and Services Tax) is a broad-based consumption tax levied on most goods and services sold for domestic use. Businesses collect it from consumers and remit it to the government, typically with the ability to reclaim GST paid on their own business inputs.

How do I calculate GST from a GST-inclusive price?

Divide the inclusive price by (1 + rate) to get the net price, then subtract it from the inclusive price to get the GST amount. For example, at 10% GST: net = 110 / 1.10 = 100; GST = 10.

Do all goods and services attract GST?

No. Most countries exempt or zero-rate certain categories such as fresh food, healthcare, education, financial services, and residential rent. The exact list varies and is defined by each country's tax law.

GST Calculator 2026 | Goods and Services Tax

Q: Is GST the same as VAT?

Conceptually yes — both are multi-stage value-added taxes on consumption. The name differs by region: most Asia-Pacific countries say GST, while Europe, Latin America, and many African countries say VAT.

Q: Can I claim GST back as a business?

Registered businesses can typically claim input tax credits for GST paid on legitimate business purchases, provided they hold valid tax invoices and file returns on time. Consumers cannot reclaim GST on personal purchases.

What is a GST Calculator?

A GST calculator converts between GST-inclusive and GST-exclusive prices so you can see exactly how much tax is embedded in a quoted figure. Goods and Services Tax is a multi-stage consumption tax collected at each step of the supply chain, but ultimately borne by the final consumer. Governments favor it because it is difficult to evade (the paper trail of invoices is self-policing) and it produces stable, predictable revenue regardless of income-tax cycles.

GST is particularly relevant in Australia (10%), India (0/5/12/18/28% depending on category), New Zealand (15%), Canada (5% federal GST plus provincial HST/PST), Singapore (9% from 2024), and Malaysia's short-lived 6% regime. Each country has its own rate structure, exemptions, and registration thresholds, but the underlying arithmetic is identical: a percentage added to a net price, or extracted from a gross price, depending on which direction you are going. Consumers generally see inclusive prices on shelves; businesses often work with exclusive prices and add GST at checkout or on invoices.

For small businesses, accurate GST calculation is more than convenience — it is a compliance requirement. Underpaying results in penalties and interest; overpaying leaves money on the table. A quick calculator helps verify point-of-sale systems, price-tag mathematics, and reimbursement claims, and ensures that the net-price figure you quote to a client matches the invoice you later issue.

How is it Calculated?

Add GST: Inclusive price = Net price × (1 + GST rate)
Remove GST: Net price = Inclusive price ÷ (1 + GST rate)
GST amount from inclusive: GST = Inclusive price − Net price

Worked example:A product sells for A$220 including 10% GST in Australia. Net price = 220 / 1.10 = A$200. GST component = 220 − 200 = A$20. In India at 18% GST, a software service priced at ₹10,000 net carries ₹1,800 of GST, so the invoice total is ₹11,800.

Key Facts by Country

Australia: Flat 10%, registration required above AUD 75,000 turnover.
India: 4-rate structure (5/12/18/28%) plus exempt and zero-rated categories.
New Zealand: Flat 15%, one of the cleanest GST systems worldwide.
Canada: 5% federal, many provinces add PST or combined HST up to 15%.
Singapore: Raised to 9% in 2024 after years at 7%.

Frequently Asked Questions

What is GST?

A consumption tax on most goods and services, collected at each stage of the supply chain but ultimately paid by the final consumer.

Is GST the same as VAT?

Yes, conceptually. Different regions simply use different terminology.

How do I extract GST from an inclusive price?

Divide by (1 + rate). At 10% GST, "$110 incl." becomes $100 net and $10 GST.

Can I claim GST back as a business?

Registered businesses can usually claim input tax credits for GST paid on business purchases, subject to valid invoices and timely filings.

Do all goods attract GST?

No — fresh food, healthcare, education, financial services and certain other categories are commonly exempt or zero-rated.