GST Calculator

Add or remove GST from any amount and see the CGST, SGST and IGST breakdown instantly.

Frequently asked questions

How do I calculate GST on an amount?

Multiply the amount by the GST rate and divide by 100. For 1,000 at 18%: GST = 180 and the total = 1,180.

How do I remove GST from an inclusive price?

Divide the inclusive price by (1 + rate ÷ 100). For 1,180 at 18%: 1,180 ÷ 1.18 = 1,000 before GST, so the GST is 180.

When is IGST charged instead of CGST and SGST?

IGST applies when the supplier and the place of supply are in different states, and on imports. CGST + SGST apply when both are in the same state.