Free GST Invoice Generator India 2026 — create CGST/SGST/IGST invoices in 60 seconds
This free GST invoice generator creates fully GST-compliant tax invoices for Indian businesses, freelancers and online sellers. Auto-calculates CGST + SGST (intra-state) or IGST (inter-state), supports HSN/SAC codes, multiple line items, and exports a clean PDF you can email or print. No signup, no watermark, unlimited invoices.
How to make a GST invoice online — step by step
- Enter your business name, address and GSTIN.
- Add buyer details and place of supply (the tool detects intra-state vs inter-state).
- Add line items — description, HSN code, quantity, rate and GST %.
- The tool auto-applies CGST + SGST or IGST and totals everything.
- Click Download PDF — your GST invoice is ready.
What fields are mandatory on a GST tax invoice?
- Invoice number (consecutive serial) and invoice date
- Supplier name, address, GSTIN
- Buyer name, address, GSTIN (if registered)
- Place of supply and state code
- HSN / SAC code per line item
- Description, quantity, unit, rate, taxable value
- GST rate and amount split into CGST/SGST or IGST
- Total invoice value (in figures and words)
- Supplier signature or digital signature
CGST + SGST vs IGST — which one applies?
Intra-state sale (supplier and buyer in the same state) — split GST equally into CGST and SGST. Example: 18% GST on a ₹1000 item → ₹90 CGST + ₹90 SGST. Inter-state sale (across states or to a SEZ) — charge full GST as IGST. Example: 18% GST on ₹1000 → ₹180 IGST. The calculator detects this automatically based on the place of supply.
Is e-invoicing mandatory for my business?
E-invoicing on the IRP portal is mandatory for businesses with aggregate annual turnover above ₹5 crore (effective Aug 1, 2023). Below that threshold, this regular GST invoice is valid. For e-invoicing, register the invoice on the IRP, obtain the IRN and QR code, then print on your invoice.
Related India seller tools
Find correct HSN codes with the HSN Code Finder, generate a UPI QR for shop payments with the UPI QR Poster Maker, and calculate marketplace profits with the India Profit Calculator.