Indian GST Calculator
Calculate GST for inclusive or exclusive values with slab rates, custom rate, CGST/SGST or IGST split, and cess support.
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GST Inputs
₹
%
%
Final Invoice Amount
₹0.00
Taxable Amount
₹0.00
GST Amount
₹0.00
Effective Tax Rate
0%
CGST / SGST
₹0.00 / ₹0.00
IGST / Cess
₹0.00 / ₹0.00
Invoice Breakdown
Taxable Value₹0.00
CGST₹0.00
SGST₹0.00
Cess₹0.00
Final Invoice Total₹0.00
GST Formula
For GST-exclusive amount:
GST=Base Amount×GST Rate÷100
Final Amount=Base Amount+GST+Cess
For GST-inclusive amount:
Base Amount=Inclusive Amount÷(1+(GST + Cess)/100)
Quick GST Notes
- Intra-state supplies split GST equally into CGST and SGST.
- Inter-state supplies apply the entire GST as IGST.
- Cess is calculated separately and added on top of taxable value.
- Use GST-inclusive mode to back-calculate taxable value from invoice total.
Frequently Asked Questions
What is the difference between CGST/SGST and IGST?
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CGST+SGST apply to intra-state transactions, while IGST applies to inter-state transactions. Total GST burden is the same for the selected rate.
How does GST-inclusive mode work?
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It reverse-calculates the pre-tax taxable amount by dividing the invoice total by (1 + tax rate / 100), then computes tax components from that base.
When should I use cess?
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Use cess only where applicable for specific goods/services notified under GST rules. Keep it at 0% when not applicable.