GST Calculator

Easily calculate GST inclusive and exclusive amounts.

Calculate GST

Result

👋Enter amount and rate to see results

How to calculate GST?

GST (Goods and Services Tax) can be calculated using two simple formulas depending on whether you want to add GST to a net price or remove GST from a total price.

Add GST Formula

Used when price excludes GST.

GST Amount = (Price × GST%) / 100
Total = Price + GST Amount

Remove GST Formula

Used when price includes GST.

Original Price = Total / (1 + GST%/100)
GST Amount = Total - Original Price