E-Invoicing Software

Generate and Manage E-Invoices directly from your ERP


E-Invoicing Workflow

E-Invoicing Workflow

autoTax can integrate with any ERP through APIs, SFTP

  • SAP
  • Oracle
  • Microsoft Dynamics NAV
  • Tally
  • Marg
  • ERPs

We help companies reduce their compliance effort

Sales Register


Report invoices to government on real-time basis and share valid E-Invoices with buyers

Purchase Register


Validate purchase E-Invoices from suppliers and automate AP process



Single window for communication with all three government portals



Multiple reports to help you keep a tab on your business



Build customer, supplier, transporter, item and tax masters

Business Management


Generate invoicing at business unit, division and warehouse level

user image


Ensure data security with role and permission based access for users

Customer Support


Continuous support to help address functional and technical queries

Frequently Asked Questions

E-Invoicing is a new invoicing system introduced in the GST regime. This system does not generate invoices from a central portal of the tax department, but it only specifies the invoice schema and standard so that the e-invoices generated can be read and operated by all accounting/billing software and businesses uniformly. Businesses will have to create B2B invoices on their internal systems – whether ERP or any other accounting/billing system and get the invoice authenticated electronically by the Government.

E-Invoicing is mandatorily applicable from 1 October 2020 for all GST registered businesses whose annual turnover in the financial year exceeds INR 500 crores.

Invoice Registration Portal (IRP) is a portal managed by the Goods and Service Tax Network (GSTN) to authenticate invoices. After verifying the details in the invoice submitted by the taxpayer, the IRP generates a unique Invoice Reference Number (IRN), Quick Response (QR) code and digitally signs the invoice. The IRP will electronically send the signed e-invoice back to the taxpayer.

The hash computed by the IRP is the IRN (Invoice Reference Number). In other words, IRN is a 64 character unique number generated by the IRP for each invoice uploaded by the taxpayer. This IRN is a combination of the Supplier GSTIN + Financial Year + Document Type + Document Number. It will be a unique identifier for each invoice.

  • a. Supplier invoice
  • b. Credit note
  • c. Debit note
  • d. Reverse charge invoice
  • e. Any other documents as required by law


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