Add or remove GST with intra/inter-state toggle, all slabs including 0%, GSTIN validation, and CGST, SGST, or IGST breakdown.
Also searched as: goods and services tax calculator · add gst calculator · remove gst calculator · reverse gst calculator · cgst sgst calculator
GST ₹1800.00, total ₹11800.00
GST Amount = Original Amount × (GST Rate / 100)
Total Amount = Original Amount + GST AmountFor GST-exclusive calculation, multiply the base amount by the GST rate percentage. The total payable is the base amount plus the GST amount.
| Symbol | Meaning |
|---|---|
| Base | Amount before GST |
| Rate | GST rate as a percentage (e.g. 18) |
Original Amount = Total Amount / (1 + GST Rate / 100)
GST Amount = Total Amount − Original AmountWhen the price already includes GST, divide the total by (1 + rate/100) to extract the base amount. The difference between total and base is the GST portion.
| Symbol | Meaning |
|---|---|
| Total | GST-inclusive amount entered |
| Rate | GST rate as a percentage |
Step-by-step guide to get the most from this tool
Pick intra-state (CGST+SGST) or inter-state (IGST).
Type the amount and tap a GST slab — 0%, 5%, 12%, 18%, or 28%.
See exclusive and inclusive panels, GST amount, total, and CGST/SGST or IGST split. Optionally validate GSTIN.
What makes this tool stand out
Works for exclusive and inclusive pricing.
CGST/SGST or IGST breakdown automatically.
Calculate exempt supplies at zero rate.
Check 15-character GSTIN format.
Copy URL with your inputs.
One-click copy for each tax component.
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Quick answers to common questions
GST (Goods and Services Tax) is a unified indirect tax on goods and services in India, replacing multiple central and state taxes.
Main slabs are 0%, 5%, 12%, 18%, and 28%. Some items like basic food grains are exempt at 0%.
CGST and SGST split the rate equally for intra-state sales. IGST is the full rate for inter-state transactions.
GST Amount = Base × (Rate / 100). Total = Base + GST. Example: ₹1000 at 18% → GST ₹180, Total ₹1180.
Base = Inclusive / (1 + Rate/100). GST = Inclusive − Base.
GSTIN is a 15-character tax identification number. This tool validates the format (not government records).
Use IGST when supplier and buyer are in different states. Use CGST+SGST for same-state transactions.
Yes. Click Share to copy a link with amount, rate, and supply type pre-filled.
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