Question 1

How do I calculate GST backwards from a total?

Accepted Answer

To extract GST from a GST-inclusive amount, divide the amount by (100 + rate) and multiply by the rate. This reverse GST calculator does it instantly for 5%, 12%, 18% and 28%.

Question 2

Is GST split into CGST and SGST?

Accepted Answer

For intra-state sales, GST is split equally into CGST and SGST (e.g. 18% = 9% CGST + 9% SGST). For inter-state sales it is charged as IGST.

Reverse GST Calculator

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