◈ FINANCE Updated July 25, 2026

GST Calculator

Inclusive or exclusive GST, worked out both ways in one place.

Price before tax
GST rate (%)
Mode
Result
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How it works

Adding GST multiplies the base price by the rate; removing it divides the gross price by one plus the rate, which recovers the original base and the tax portion.

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Frequently asked questions

How do I back out GST from a total?

Divide the total by 1 plus the rate — for 10% GST, divide by 1.1. Subtracting 10% from the total is the classic mistake.

Which rate should I use?

Use the rate for your country: 10% in Australia, 15% in New Zealand, and 5%/12%/18%/28% slabs in India.

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