GST Invoice Generator

Any GST-registered business (with GSTIN) that makes a taxable supply of goods or services must issue a tax invoice. Unregistered businesses making supplies under the GST exemption threshold (₹40 lakh for goods, ₹20 lakh for services) can issue a simple bill of supply without GST.

A valid GST invoice must include: your business name, address and GSTIN, invoice number and date, buyer's name and address (GSTIN if registered), HSN/SAC code for each item, quantity and unit of measure, taxable value, applicable GST rate (CGST+SGST for intrastate or IGST for interstate), and total invoice value.

For supplies within the same state (intrastate), GST is split equally between CGST (Central GST) and SGST (State GST) — e.g., 18% GST = 9% CGST + 9% SGST. For supplies between different states or exports (interstate), only IGST (Integrated GST) applies at the full rate — e.g., 18% IGST.

HSN (Harmonized System of Nomenclature) codes classify goods for GST purposes. Businesses with turnover above ₹5 crore must use 8-digit HSN codes; others may use 4 or 6 digits. Search for your product's HSN code on the GST Council website at gstcouncil.gov.in or on the government's GST portal.

E-invoicing (electronic invoice on the IRP portal) is mandatory for GST-registered businesses with aggregate turnover above ₹5 crore from 1st August 2023. Smaller businesses can continue with standard invoices. This tool generates standard PDF invoices — for IRP e-invoice integration, use the official GST e-invoice portal or accounting software like Tally/Zoho.