Invoicing & Billing Tools
Business Document Generators
Create professional, GST-compliant business documents in minutes. Instant A4 PDF downloads formatted for Indian standards, with zero data saved to any server.
Available Tools (9)
Browse All 66+ Tools →Statutory Rules for Indian Business Documents
Under Section 31 of the CGST Act 2017, every registered business supplying taxable goods or services must issue a Tax Invoice containing mandatory fields: unique consecutive serial number, HSN/SAC code, place of supply, and recipient GSTIN.
For inter-warehouse transfers, goods sent for job work, or sales on approval, a Delivery Challan under Rule 55 must accompany the consignment instead of a tax invoice.
💡 Invoice Serial Numbers
Ensure invoice numbers are strictly consecutive, contain only alphanumeric characters, and do not exceed 16 characters per financial year.
💡 Proforma vs Tax Invoice
A Proforma Invoice is an estimate or commercial quotation; it cannot be used by the buyer to claim Input Tax Credit until the final Tax Invoice is issued.