GST Billing Software
Create Invoices in 60 Seconds
Auto CGST/SGST/IGST on every invoice. UPI payment link included. GSTR-1 data ready. Works on mobile. No accountant needed.
GST billing is part of Proactiq OS — full business platform. Free forever plan available.
GST invoice in 4 steps
From customer to payment in 60 seconds
Select customer
Pick from your contacts or type a new customer name. GST details auto-fill if saved.
Add items with HSN
Select products/services. HSN code and GST rate auto-applied. Quantity and discount fields included.
GST auto-calculated
CGST/SGST for intra-state, IGST for inter-state — computed instantly. No manual calculation needed.
Send + collect payment
Email or WhatsApp the invoice with a UPI payment link. Customer pays. Books update automatically.
Complete GST billing features
Everything you need for GST compliance
Invoice in 60 Seconds
Select customer → add items → GST calculated → invoice ready. Send via WhatsApp in one tap.
Fully GST Compliant
CGST/SGST/IGST on every invoice. HSN codes. Tax invoice format as per CBIC rules. E-way bill ready.
GSTR-1 Data Export
Monthly GST data prepared from your invoices. B2B, B2C, export invoices, HSN summary — ready to file.
E-Invoicing (IRP)
For businesses >₹5Cr: generate IRN and QR code from Proactiq. E-invoice auto-sent to IRP portal.
Works on Any Device
Mobile, tablet, or desktop. Android app available. Create and share invoices from anywhere.
AI Collections Assistant
AI identifies overdue invoices and sends polite payment reminder emails automatically — no chasing needed.
Try our free GST tools
No signup required — just use them
GST Billing Software — FAQ
What is the best GST billing software in India?▼
Proactiq OS is the best GST billing software for Indian businesses — it auto-calculates CGST, SGST, and IGST, generates GSTR-1 data, supports e-invoicing, and lets you collect payments via UPI link. Free plan available.
Can I create GST invoices on mobile?▼
Yes. Proactiq works on any mobile browser and has a native Android app. Create a GST invoice at a customer's location and share it via WhatsApp or email instantly.
Does Proactiq support HSN codes on invoices?▼
Yes. Add HSN codes to your products/services. Proactiq auto-applies the correct GST rate based on HSN code and shows HSN summary in GSTR reports.
How do I collect payment after raising an invoice?▼
Every invoice in Proactiq has a payment link (Razorpay). Customers can pay via UPI, credit card, net banking, or EMI. Payment status updates automatically in your books.
Is Proactiq free for GST invoicing?▼
Yes. Proactiq has a free forever plan that includes GST invoicing for up to 50 invoices/month. Unlimited invoicing starts at ₹2,999/month with full business OS features.
Start billing with GST today
Free forever plan. No card. First invoice in 60 seconds.
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