What must a GST tax invoice include?

Your name, address and GSTIN; a unique invoice number of up to 16 characters and the date; the buyer's name, address and GSTIN if registered; the place of supply; each item's description, HSN or SAC code, quantity, value and GST rate; the tax amounts; the total; and your signature.

When do I charge CGST and SGST instead of IGST?

Charge CGST and SGST, each at half the GST rate, when the place of supply is in the same state as you. For supplies to another state, charge IGST at the full rate.

How many digits of HSN code do I need?

Businesses with turnover up to ₹5 crore must show at least 4 digits of HSN on invoices to registered buyers; above ₹5 crore, 6 digits on all tax invoices. Services use SAC codes.

Can an unregistered business issue a GST invoice?

No. Only GST-registered businesses can issue a tax invoice and charge GST. Unregistered businesses issue a simple bill without GST.

GST invoice generator

Fill in your details and items. We work out CGST and SGST or IGST and the amount in words, and lay it out as a proper tax invoice to print or save as a PDF.

Your business

Business name

Your GSTIN

Address

Bank details for payment (optional)

Remember my business details on this device Saved only in this browser, never sent to FinanceX.

Invoice and buyer

Invoice numberUp to 16 characters, in sequence for the financial year.

Invoice date

Buyer's name

Buyer's GSTIN (leave blank if unregistered)

Buyer's address

Place of supply

Items

Round the total to the nearest rupee

Made on your device; the invoice isn't sent to FinanceX. Rates: 0%, 5%, 18% and 40% are the main slabs from 22 September 2025, with 3% for gold and silver and 0.25% for rough diamonds. Check the buyer's GSTIN before you invoice.

Frequently asked questions

What must a GST tax invoice include?: Your name, address and GSTIN; a unique invoice number of up to 16 characters and the date; the buyer's name, address and GSTIN if registered; the place of supply; each item's description, HSN or SAC code, quantity, value and GST rate; the tax amounts; the total; and your signature.
When do I charge CGST and SGST instead of IGST?: Charge CGST and SGST, each at half the GST rate, when the place of supply is in the same state as you. For supplies to another state, charge IGST at the full rate.
How many digits of HSN code do I need?: Businesses with turnover up to ₹5 crore must show at least 4 digits of HSN on invoices to registered buyers; above ₹5 crore, 6 digits on all tax invoices. Services use SAC codes.
Can an unregistered business issue a GST invoice?: No. Only GST-registered businesses can issue a tax invoice and charge GST. Unregistered businesses issue a simple bill without GST.