TetraKits
Goods and Services Tax (GST) applies across Australia, New Zealand, India, Singapore, and other countries — each with different standard rates. The TetraKits GST calculator handles net-to-gross and gross-to-net math with one-click country presets.
What is GST?
GST is a broad consumption tax on most goods and services. Registered businesses charge GST on sales and claim credits on purchases. The math mirrors VAT:
- GST amount = net × (rate ÷ 100)
- Gross = net × (1 + rate ÷ 100)
How to calculate GST
- Open the GST Calculator.
- Choose Add GST (from net) or Remove GST (from gross).
- Click a country preset or enter a custom rate.
- Read net, GST, and gross in the results panel.
Country GST rates
| Country | Standard GST |
|---|---|
| Australia | 10% |
| New Zealand | 15% |
| India | 18% (most goods) |
| Singapore | 9% |
For European VAT, use the VAT calculator.
FAQ
What is Australia's GST rate?
10% standard rate on most goods and services.
How do I remove GST from a total?
Net = gross ÷ (1 + rate/100). GST = gross − net.
GST vs VAT?
Same concept, different name by region. GST in APAC; VAT in Europe/UK.
Is this GST calculator free?
Yes. Free with unlimited calculations.
