GST Invoice & Billing Software India — Easy Online Billing

Create GSTR-compliant invoices, split CGST/SGST/IGST, track receivables, send auto-reminders, and sync collections with your ledger. Free to start.

Quick answer

Avani Business OS has a built-in GST Invoicing module that automatically computes CGST, SGST, and IGST splits based on customer state and HSN/SAC codes.

Small businesses can create, customize, and email professional PDF invoices featuring brand logos, digital signatures, and payment QR codes in under a minute.

Fully integrated with Avani's CRM and finance ledger, allowing invoices to generate from closed CRM deals and automatically post to income statements.

Included in the flat ₹29 per employee monthly subscription, eliminating the cost of separate billing tools like Vyapar, Zoho Books, or Tally.

At a glance

100% — GST Compliant Calculations
CGST/SGST/IGST — Auto Split Slabs
< 1 Minute — Invoice Generation Time
Receivables — Real-Time Aging Tracker

Features

GST-Compliant Invoice Design

Design beautiful, professional invoices with your business logo, authorized stamp, and signature. Automatically handles sequential invoice numbers, billing addresses, and shipping details.

Auto CGST, SGST & IGST Calculation

Never worry about tax calculation errors. Avani automatically checks the customer's GSTIN state and applies the correct CGST/SGST (intra-state) or IGST (inter-state) tax split with HSN/SAC lookups.

Outstanding Payment Reminders

Auto-track unpaid, paid, or partially paid invoices. Send automated email reminders to clients with outstanding balances, keeping your cash flow positive and reducing average collections time.

Integrated CRM & Finance Ledger

When a sales representative marks a deal as closed in the CRM, Avani can automatically generate the invoice. When payments are recorded, they instantly update the company's finance ledger.

Flexible Payment Tracking

Accept partial payments, record transaction IDs, and log credit/debit notes. Avani provides a clean timeline of client interactions and invoice histories for every customer profile.

Quick Excel & Accountant Exports

Export all invoicing, sales tax, and collection logs in Excel sheets compatible with tax filing tools. Share direct financial statements with your Chartered Accountant (CA) in a click.

Key benefits

Automate tax computations with error-free CGST/SGST/IGST splits
Customized PDF invoices with logo, signature, and payment instructions
Integrated sales CRM connects deal closing to client billing
Payment tracking with automatic aging reports for overdue collections
Export sales and tax logs in excel sheets for easy GSTR returns filing
No separate billing software fees — bundled at ₹29 per employee/month
Accept and record partial payments with custom invoice notes
No training required — simple, intuitive billing screen

How it works

1. Enter Customer & GSTIN Details — Save customer billing details and GSTIN. Avani verifies the tax treatment based on location and pre-populates recurring customer info.
2. Add Line Items & HSN Codes — Select services or products, enter prices, and pick the tax rate (5%, 12%, 18%, 28%). Avani calculates the correct tax splits and total payable amount.
3. Send & Log Payments — Email the PDF invoice to the client directly from the portal. Record payments as they clear and let the system automatically update your dashboard reports.

Frequently asked questions

Does Avani Business OS support GST-compliant invoicing?

Yes. Avani is built for Indian businesses and fully supports GST billing rules. It splits taxes into CGST, SGST, and IGST based on customer locations, handles HSN/SAC codes, and prints sequential, tax-compliant invoice PDFs.

Can we generate invoices directly from the CRM module?

Yes. Since Avani is a unified Business OS, the CRM and Invoicing modules are linked. Once a lead is marked as won, a sales rep can convert that lead detail into a draft invoice in one click, avoiding duplicate data entry.

Do we have to pay a separate fee for the billing and invoicing module?

No. Unlike other tools that charge extra for billing modules or require buying point tools like Vyapar, Avani bundles the Invoicing, CRM, Finance Tracker, and HRMS modules together under the flat ₹29/employee/month pricing.

Can my accountant download reports from the finance module?

Yes. You can export invoice ledgers, GSTR tax breakdowns, and collection sheets in Excel format. You can also grant a separate portal account to your Chartered Accountant (CA) to review ledger books and cash flows.

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