ZapInvoice is a free, India-first GST invoicing tool built for freelancers, consultants, and small service businesses. Create a fully GST-compliant invoice in under 60 seconds. The tool automatically handles CGST/SGST (intra-state) and IGST (inter-state) splits based on your client's state, generates a UPI QR code on every invoice, and supports all 12 document types required under Indian GST law — Tax Invoice, Bill of Supply, Proforma Invoice, Credit Note, Debit Note, Export Invoice, and more.

Create professional invoices online for free with ZapInvoice. No login required. Generate and download PDF invoices instantly with custom branding, international & GST tax support, and more.