The GST Billing Problem in India
Since GST was introduced in 2017, Indian wholesale businesses face a unique compliance burden: every invoice must carry the correct HSN code, GSTIN, and tax breakdown (CGST/SGST/IGST). Manual errors trigger notices from the GST department. This guide covers what to look for in billing software and common mistakes to avoid.
What GST-Compliant Billing Software Must Do
A truly GST-ready billing system for wholesale businesses needs:
- GST-compliant invoice format — per CBIC guidelines: supplier GSTIN, recipient GSTIN (if registered), HSN/SAC codes, tax rates (5%, 12%, 18%, 28%), CGST/SGST for intrastate, IGST for interstate
- E-invoice generation — mandatory for businesses with turnover above ₹5 crore. The system must generate IRN (Invoice Reference Number) via the IRP portal
- E-way bill integration — for goods over ₹50,000 transported beyond 50km, automatic generation via NIC API
- GSTR-1 and GSTR-3B export — one-click JSON/Excel export in the format accepted by the GST portal
- Inventory management — stock tracking with HSN-linked product catalog
- Credit/debit notes — proper reversal document generation for returns and adjustments
Comparing Popular Options
Tally Prime
Cost: ₹18,000 – ₹54,000 one-time (Silver/Gold)
Pros: extremely mature, CA/accountant familiarity, robust manufacturing module.
Cons: desktop-only (remote access costs extra), steep learning curve, not cloud-native, poor mobile experience.
Vyapar
Cost: ₹1,499 – ₹4,999/year
Pros: affordable, mobile-first, easy setup.
Cons: limited customisation, basic reporting, not suitable for large inventory catalogues.
Zoho Books
Cost: ₹749 – ₹2,499/month
Pros: excellent UI, full GST compliance, good integrations.
Cons: per-user pricing gets expensive at 10+ users, limited wholesale-specific features.
Techno Bills (by TS Innovations)
Cost: Contact us for pricing
Pros: built specifically for Indian wholesale businesses, cloud-native (works on any device), GST-compliant invoices with automatic HSN lookup, inventory with stock alerts, outstanding payment tracking, PDF export and WhatsApp sharing. Available at techno-bills.web.app.
Cons: newer product, enterprise features like e-invoice IRN generation planned for Q3 2026.
Common Mistakes in GST Billing
- Wrong HSN code — using a 4-digit code when 8-digit is required (turnover > ₹5 crore) triggers GSTR mismatch
- Intrastate vs interstate confusion — charging CGST+SGST for an interstate supply (should be IGST only) requires credit note correction
- Composition dealer billing — charging GST on invoices issued by composition dealers is illegal; they must issue bills of supply
- Missing recipient GSTIN — for B2B supplies, the buyer's GSTIN is mandatory; without it, they can't claim input tax credit
- Time of supply mismatch — invoice date must be within 30 days of the service/goods delivery date for the correct tax period
Migration Checklist: Moving from Manual/Excel to Software
- ☐ Export customer master with GSTIN, address, and contact details from existing system
- ☐ Create product/service catalog with HSN codes, description, and default tax rate
- ☐ Set up opening stock balances
- ☐ Configure financial year start date (April 1)
- ☐ Add company GSTIN, PAN, bank details, and digital signature
- ☐ Design invoice template (letterhead, logo)
- ☐ Run a parallel month: generate invoices in new software alongside old system to verify totals match
- ☐ Train billing staff on the new interface
Need Help Choosing or Customising?
If your wholesale business has specific requirements that off-the-shelf software doesn't handle — custom pricing tiers, integration with your purchase system, branded portal for buyers — we can build it. Talk to us →