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GST Invoice Generator

Create GST invoices for your customers — for GST-registered businesses in India. First bill free.

You're GST-registered and the buyer wants a tax invoice

So they can claim ITC. Or you're a small seller and the buyer is chasing you for a proper invoice, not a handwritten slip. Place of supply decides IGST vs CGST+SGST. HSN or SAC on each line. Invoice number in series. When you're the one issuing, a clear tax invoice with your GSTIN, their details, taxable value, and tax breakdown gives them what they need and keeps your books straight.

On A2ZBills you create the invoice: business and customer details, place of supply, line items with HSN/SAC, rate, taxable value, GST rate, then CGST/SGST or IGST. One PDF. If you're unregistered, you can issue a bill of supply (no tax).

What B2B buyers need for ITC

Your GSTIN, their name and GSTIN (if registered), invoice number and date, place of supply, description of goods or services, HSN/SAC, quantity, rate, taxable value, and the tax split (CGST+SGST for same state, IGST for inter-state). Without a proper tax invoice from you, they can't claim credit—so issue it when you supply, not weeks later when accounts chases you.

When the buyer says they didn't get the invoice

Common. Generate another copy from your Bill History and email or share it on WhatsApp. Mark it as a duplicate in notes if you already issued one. Buyers need your tax invoice for ITC—reissuing quickly keeps their filing on track and yours dispute-free.

Creating a GST invoice on A2ZBills

Sign up, enter your business and customer details, place of supply, then add line items with HSN or SAC, quantity, rate. The tool applies GST (CGST+SGST or IGST) based on place of supply. Generate and download. Suits small businesses and sellers who need a compliant invoice without heavy accounting software.

Share bills on WhatsApp

Every bill you generate is saved to your A2ZBills dashboard. Share via WhatsApp with one tap — send the PDF link when your customer or client asks for a copy.

Dashboard — open any saved bill and tap Share on WhatsApp
After download — WhatsApp appears next to Download in the preview toolbar once the bill is saved

Collect payment with UPI QR

GST sellers often email a PDF and chase UPI payment separately — add a QR on the invoice so the amount is pre-filled.

Turn on UPI payment QR in the form and enter your UPI ID (prefills from your profile).
Download the PDF — a scannable QR appears on the bill with the total amount.
Your customer scans the QR with PhonePe, Google Pay, Paytm, or any UPI app — no manual amount entry.

Pair with WhatsApp sharing above to send the bill link after download; the PDF itself carries the QR for scan-to-pay.

Frequently Asked Questions

Can I add a UPI QR code on the bill?

Yes. Turn on UPI payment QR and enter your UPI ID, then download the PDF — the QR prints on the bill with the amount filled in. Your customer scans it with any UPI app to pay.

What's the difference between a tax invoice and a bill of supply?

A tax invoice is for GST-registered sellers: it shows tax and lets the buyer claim ITC. A bill of supply is for unregistered sellers or exempt supplies: no tax column, so no ITC. Use the right one so the buyer's accounts team doesn't reject it.

Do I need HSN or SAC on every line?

For invoices above a certain value, HSN (goods) or SAC (services) is required. Even for smaller invoices, it helps the buyer and your own filing. Use the code that matches your product or service.

How should I number my GST invoices?

Sequential: INV/2025-26/001, 002, etc. Unique per financial year. Gaps are okay if you have a reason; don't reuse numbers. Makes filing and audits easier.

What if I'm not GST registered?

You can't issue a tax invoice. Issue a bill of supply instead: no GSTIN, no tax breakdown. The buyer can't claim ITC on it. Many small sellers use this until they cross the registration threshold.

Do I need to maintain all downloaded bills offline in my mobile or laptop?

No. Every bill you generate is saved automatically in your Bill History on the A2ZBills dashboard. You can view, re-download, duplicate or share any bill at any time via WhatsApp—no need to manually save files or track PDFs locally or via email. The dashboard takes care of it all.

Can I track which bills have been paid?

Yes. The dashboard includes payment tracking where you can mark any bill as Paid, Unpaid, or Partially Paid. Outstanding invoices are visible at a glance, and you can track payment status across customers and bills—all without a separate accounting tool.

You might also need

Create these bills next for a complete set of documents.