GST Calculator
Add or remove GST at any rate, instantly.
₹100₹1,00,00,000
Total with GST
₹59,000
Base amount₹50,000
GST (18%)₹9,000
Total₹59,000
CGST + SGST split₹4,500 + ₹4,500
Base85%
GST15%
Inclusive vs exclusive GST
Adding 18% to ₹50,000 gives ₹59,000 — but removing 18% from ₹59,000 requires dividing by 1.18, not subtracting 18%. This calculator handles both directions correctly and shows the CGST/SGST split for intra-state supplies.
Frequently asked questions
When do CGST/SGST apply vs IGST?
Within a state, tax splits equally into CGST and SGST. Across states, the whole amount is levied as IGST. The total rate is identical either way.
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