GST Calculator — Inclusive, Exclusive, CGST/SGST/IGST
Work out GST-exclusive or GST-inclusive amounts instantly, with the CGST/SGST or IGST split for intra-state and inter-state transactions.
Calculate GST
How this calculator works
Choose whether your amount already includes GST (inclusive) or not (exclusive), pick the applicable GST rate, and select whether the transaction is within the same state (intra-state, split as CGST + SGST) or between different states (inter-state, charged as IGST). The calculator does the arithmetic instantly in your browser.
FAQs
What's the difference between GST-inclusive and GST-exclusive?
An exclusive amount is the price before GST is added (GST is added on top). An inclusive amount already has GST built into it (GST is extracted out of the total).
When is GST split as CGST + SGST vs IGST?
Intra-state transactions (buyer and seller in the same state) are split equally into CGST and SGST. Inter-state transactions are charged as IGST at the full rate instead.
Which GST rate should I choose?
The applicable rate depends on the specific goods or service — check your invoice/HSN-SAC classification, or ask us if you're unsure.