AnyTool’s GST Invoice Generator is completely free with no account and no watermark. The invoice is assembled and the PDF is built entirely on your device with a local engine, so your business name, GSTIN, your customer’s details, your HSN/SAC codes and your line-item prices never leave the browser. An optional “Save draft” keeps a copy only in this browser’s local storage, which you can clear with Reset.

A supply within one state or union territory is intra-state, so the GST rate is split equally into CGST and SGST/UTGST — an 18% rate becomes 9% CGST + 9% SGST. A supply between two different states is inter-state, so the full rate is charged as a single IGST — 18% IGST. The tool reads the supplier state and the place of supply you select and applies the correct split automatically, per line item, rounded to paise.

Under Rule 46 of the CGST Rules a tax invoice should carry the supplier’s name, address and GSTIN; a unique consecutive invoice number and the date; the recipient’s name, address and GSTIN (or a note that they are unregistered); the place of supply with its state code; each item’s HSN (goods) or SAC (services) code, description, quantity, unit, rate and taxable value after discount; the GST rate and the CGST + SGST or IGST amounts; the total invoice value in figures and in words; any reverse-charge indication; and the authorised signatory. The generator provides all of these fields.

The tool builds a GST-format invoice and does the CGST/SGST/IGST arithmetic, but it does not validate your GSTIN, look up the right HSN/SAC code, or confirm the GST rate for each item — rates change and vary by product or service. Special cases such as exports, SEZ supplies and mandatory e-invoicing/IRN above the turnover threshold are out of scope, and invoice numbering must be kept consecutive. This is a document generator, not tax or legal advice; consult a CA or GST practitioner.