Fill it in, watch it build, download the PDF.
A GST tax invoice needs the fields a return actually checks: GSTIN, HSN or SAC per line, the place of supply, and a rate-wise CGST, SGST or IGST breakup. This tool builds one as you type, works out which split applies from the two GSTINs involved, and gives you a clean PDF at the end.
It also works outside India — pick a different country from the same form and the tax section switches to that country's rules, or tells you plainly if we don't calculate it yet.
Yes. Enter both GSTINs and the tool reads each one's state from its first two digits. Same state splits the tax into CGST and SGST; different states charge IGST instead.
Yes. Changing the country on the form switches the tax rules to that country's — or tells you if we don't compute that country's tax yet, rather than guessing.
Not while you work — it is built and the PDF generated entirely in your browser. When you download, a copy is saved to your account so you can find and edit it later, including the line items. It is yours, and you can delete it at any time.