How do I remove GST from an inclusive price?

Divide the inclusive price by 1 plus the rate as a decimal. At 10% GST, an inclusive 110 becomes 110 / 1.10 = 100 net, with 10 GST.

What GST rate should I use?

Use the rate for your country — for example 10% in Australia and New Zealand, or 7% to 9% for various Singapore years. The tool works with any rate you enter.

Is anything sent to a server?

No — all GST calculations happen locally in your browser.

GST Inclusive / Exclusive Calculator

Add or remove GST at any rate — see net, GST and gross.

GST inclusive and exclusive calculator

Switch between adding GST to a net (GST-exclusive) amount and removing GST from a GST-inclusive price. Enter any rate and the tool shows the net, the GST portion, and the gross total.

All maths runs locally in your browser — your figures are never uploaded.