Generate GST Invoices from Inbound WhatsApp Orders
Stop manually typing orders to calculate tax. Learn how TarkApp automatically parses WhatsApp orders and drafts GST-compliant invoices in your ERP.
TarkApp turns incoming WhatsApp orders into GST invoices by identifying the buyer's ledger in your ERP, applying the correct state tax logic (IGST/CGST) and HSN codes, and auto-drafting a Sales Order ready for final billing.
Sharing a PDF invoice on WhatsApp is easy, but manually calculating GST from a messy WhatsApp text order is a nightmare.
Generate GST Invoices from Inbound WhatsApp Orders
When wholesale distributors look for 'WhatsApp billing software,' the search results are flooded with basic tools that only let you share a PDF over WhatsApp after you've manually typed the invoice into your system. But the real friction in B2B distribution isn't sharing the PDF—it's the manual labor required to translate a messy WhatsApp order into a fully compliant GST invoice.
Retailers do not calculate taxes when they order. A shopkeeper texts, "Send 5 boxes of product X." To generate a valid GST invoice, your back-office team must look up the retailer's state code to apply IGST or CGST/SGST, verify their GSTIN, check the product's HSN code and tax slab, and manually punch the sales voucher into an ERP like Tally or Marg.
Auto-Drafting GST-Ready Orders
TarkApp completely automates the inbound order-to-invoice pipeline. When a retailer orders via WhatsApp, TarkApp's AI understands the request and instantly cross-references it with your connected ERP. It identifies the buyer's GST ledger, determines the correct intra-state or inter-state tax logic, and looks up the exact HSN codes for the requested items.
TarkApp then auto-drafts a tax-accurate Sales Order in your ERP. Once your team reviews and approves the draft, your ERP generates the final, compliant GST invoice—which TarkApp can automatically send right back to the buyer's WhatsApp. It is a true end-to-end flow, turning a simple text message into a legal tax document without any manual typing.
See how TarkApp converts WhatsApp orders into GST invoicesHow TarkApp compares
| Feature | Basic WhatsApp Billing | TarkApp Automation |
|---|---|---|
| Tax Calculation | Requires manual ERP entry first | Auto-calculated via ERP ledger sync |
| Inbound Orders | Not supported; only outbound PDF sharing | Parses orders directly into sales drafts |
| GST Validation | Manual check of buyer GSTIN/state | Instant validation against ERP data |
Frequently asked
Does the system know whether to charge IGST or CGST/SGST?
Yes. By identifying the buyer's WhatsApp number and linking it to their ERP ledger, TarkApp automatically applies the correct intra-state or inter-state GST rules.
What if the retailer doesn't mention the product's HSN code?
The retailer never needs to. TarkApp maps their colloquial order request to your ERP's item master, which already contains the correct HSN code and tax slab.