GST Invoice Calculator
Build a multi-item bill, apply a discount and GST rate per line, and get an instant CGST/SGST or IGST total — ready to print.
| Product | Qty | Price | Discount % | GST Rate | Taxable Value | GST | Total |
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How the Invoice Calculator Works
Each row calculates its own taxable value as quantity × price, minus any discount, then applies its own GST rate. The totals row adds every line together and splits the combined GST into CGST/SGST or IGST depending on the toggle above.
This tool is for quick calculations and quotes. It does not generate a GST-compliant tax invoice with GSTIN, HSN codes or invoice numbering — use your accounting software for statutory invoices.
Frequently Asked Questions
Yes, use the GST Rate dropdown on each row — this is common when an invoice mixes goods and services taxed differently.
No. Everything is calculated in your browser and is cleared when you leave or refresh the page — nothing is stored or sent to a server.