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GST Calculator
Calculate GST for any amount. Get CGST + SGST (intra-state) and IGST (inter-state) breakdowns instantly.
CGST + SGST applies within the same state · IGST applies across states or on imports
How to use
- Enter the base amount or the GST-inclusive amount.
- Pick the GST slab — 5%, 12%, 18% or 28% are the most common.
- Choose Exclusive if you want to add GST on top, or Inclusive if GST is already inside the amount.
- Copy the result or note the CGST/SGST split for your invoice.
Common slabs
When is 18% GST applied?
Most services, software, professional fees, restaurants, telecom and many manufactured goods attract 18% GST.
When is 5% GST applied?
Essential goods — basic foods, medicines, transport services like economy air travel and non-AC trains.
What is the difference between CGST, SGST and IGST?
For intra-state (within one state) transactions: CGST goes to the central government and SGST goes to the state — each at half the total GST rate. For inter-state transactions a single IGST at the full rate applies.
Is this tool compliant?
This is a calculator for quick estimates. Always verify tax amounts with your CA or chartered accountant before filing returns.
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