Auto CGST / SGST / IGST calculation, amount in words, UPI & bank details, instant PDF. No signup. Your data never leaves your browser.
| Description | HSN/SAC | Qty | Rate ₹ | GST % |
|---|
| # | Description | HSN/SAC | Qty | Rate | GST | Amount |
|---|
Everything runs in your browser. Invoices are saved to your device only — we never see your data.
Automatic CGST + SGST vs IGST based on place of supply, per-item GST rates, and amount in words (lakh/crore).
No signup, no watermarks on your documents, no limits. Fill, preview live, download PDF.
Yes. The invoice generator is free forever, with no limits. We'll make money from the optional Pro plan (recurring invoices, payment reminders, GST reports).
Your invoice data never leaves your browser — it's stored in your device's local storage only. We have no database of your invoices.
If your state and the place of supply are the same, GST is split into CGST + SGST. If different, IGST applies. You set the GST rate per line item (0, 5, 12, 18 or 28%).
No. If you're not GST-registered, leave the GSTIN blank and set GST rates to 0 — you'll get a clean professional invoice without tax lines.
A tax invoice is the legal GST document — it creates a tax liability, must be issued within the statutory time limit, and is what lets your client claim input tax credit. A proforma invoice is a quotation: no GST liability, no IRN, not reported in your GSTR-1, and it doesn't enable ITC for the buyer. Use it to confirm pricing before the sale, then switch to Tax Invoice once the work is actually delivered or paid for. Switch the document type above the preview — everything else on the form carries over.
A compact CGST/SGST vs IGST calculator for your blog or practice site. Readers who need the full invoice follow the link back here. No signup, no tracking of your visitors, nothing to pay.
The snippet keeps a small credit link back to Klair — that's the only thing we ask in return.
The calculator renders light by default so it matches most pages. Add ?theme=dark to the iframe URL for a dark site, or ?theme=system to follow each visitor's own setting.