GST billing software for Indian businesses

How GST tax calculation works

Tax isn’t a handful of hardcoded cgst/sgst columns bolted onto an invoice — it runs through a generic tax-document engine (tax_document / tax_line / tax_component tables, a TaxEngine interface) with an India GST engine as the first real implementation. Each line’s HSN/SAC code and the invoice’s place of supply decide whether it’s intra-state (CGST+SGST) or inter-state (IGST), and whether pricing is inclusive or exclusive of tax.

GST compliance features

• India GST done properly. CGST/SGST/IGST, HSN codes, place-of-supply, and inclusive/exclusive pricing — modeled through a generic tax-document engine, not a handful of hardcoded columns that break the moment the rules change.
• e-Invoice (IRN/QR) & e-Way Bill. Direct government API integration for e-Invoice and e-Way Bill generation, through versioned adapters — when GSTN changes the schema, that's a new adapter directory, not a scramble across the codebase.

Accounting that reconciles with your GST filings

• Full double-entry accounting. Customer and supplier ledgers, ageing, and a real chart of accounts — with every posted journal balanced and enforced, not assumed.
• GSTR-1 / GSTR-3B-oriented reporting. Reports structured around what you actually have to file, not a generic export you have to reshape by hand every filing cycle.

GST invoice format

A Rechvix tax invoice includes the supplier and recipient GSTIN, HSN/SAC code per line, the taxable value, the CGST/SGST or IGST breakdown at the rate applicable to each line, and the grand total — the information a valid GST tax invoice needs — printed to PDF in a choice of five layouts.