Create GST-compliant invoices in under 15 seconds. Collect zero-fee payments directly to your bank account via dynamic NPCI UPI QR codes and auto-dispatch instantly to customer WhatsApp.
4.9/5 rating from 10,000+ Indian MSMEs
INV-2026-089 • GSTIN: 27AABCV1234F1Z5
No signup needed. Adjust items, tax slabs, and templates below to see our real-time calculations and dynamic UPI QR code generator in action.
GSTIN: 29ABCDE1234F2Z5 • Karnataka, India
Amount auto-filled in Google Pay, PhonePe, Paytm, or BHIM.
0% Payment Gateway FeeSay goodbye to clunky, outdated accounting software. OpenBill Pro delivers a fluid, ultra-responsive experience crafted for modern retail and wholesale businesses.
Real-time financial pulse for Indian shop owners
Get instant insights into gross revenue, paid vs unpaid drafts, top-selling items, and daily cashier metrics with zero manual book-keeping.
Direct customer inbox delivery via OpenWA QR
Scan your WhatsApp QR once. Send invoices, PDF attachments, and payment reminders directly to customer mobile numbers in 1 click.
Classic, Modern, Minimal, and Premium themes
Switch themes on the fly. Each template features auto-aligned HSN codes, signature space, terms, and high-resolution scannable UPI QR codes.
B2B, B2C, and HSN summary in portal-ready CSV
File your monthly GST in 5 minutes. The engine automatically segregates registered GSTIN customers (B2B) and retail shoppers (B2C).
Track customer balances, credit limits & payment histories
Maintain a clean ledger for regular buyers and wholesale clients. View past invoices, edit details, and track pending dues with one tap.
Zero 2% gateway cuts — collect directly to your account
Payment goes directly from the customer’s bank account to your shop’s UPI ID without holding periods, chargebacks, or expensive 2% gateway commissions.
Built by OpenSoz open platform initiative. Starting at just ₹49/month to cover server costs.
Full unrestricted access for 7 days
Essential GST billing for growing retail counters
Full power for high-volume stores, wholesalers & distributors
Turn your smartphone into a high-speed billing terminal. Connect wireless Bluetooth thermal receipt printers, scan UPI QR codes in 1 second, and dispatch tax invoices to customer WhatsApp on the move.
Here is what retail shop owners, wholesalers, and freelance professionals have to say about OpenBill Pro.
"Earlier, I used to write paper bills and then manually text customers on WhatsApp. With OpenBill Pro, the dynamic UPI QR is right on the invoice and delivery is 1-click. My on-time payment recovery jumped by 40% in just two weeks!"
Verma Electronics & Mobile Hub
Surat, Gujarat"The 4 designer PDF templates look exceptionally classy. When wealthy boutique customers get an automated WhatsApp invoice with our brand logo and payment link, it builds tremendous brand trust. Absolutely worth every rupee."
Sundaram Silk Sarees & Boutique
Kanchipuram, Tamil Nadu"The GSTR-1 module is a lifesaver. At month-end, I just click "Export GSTR-1 CSV" and hand it directly to my accountant. Saved me ₹3,000/month in bookkeeping fees and eliminated billing errors completely."
Agrawal Hardware & Paints
Indore, Madhya PradeshEverything you need to know about billing, UPI integration, WhatsApp dispatch, and safety.