India’s GST e-invoicing system enforces stricter compliance deadlines and enhanced security measures for businesses with turnovers exceeding ₹10 crore, reflecting a push towards automation and fraud prevention in tax processes.
E-invoicing under India’s GST system remains a hard requirement for businesses that have crossed an aggregate annual turnover of ₹5 crore in any financial year since 2017-18, according to Tally Solutions. The company’s guidance says the obligation does not fall away if turnover later declines, meaning businesses that once crossed the threshold must continue generating e-invoices for qualifying B2B supplies and exports. The practical consequence is straightforward: if an invoice is not registered correctly and assigned a valid invoice reference number and QR code, it can be treated as invalid for GST purposes, with knock-on effects for buyers seeking input tax credit.
For larger taxpayers, the compliance burden has tightened further. Tally Solutions says businesses with turnover of ₹10 crore or more must now upload invoice, debit note and credit note data to the Invoice Registration Portal within 30 days of the document date, or face rejection by the system. Other industry explainers, including GST Consultancy, Tax Wapsi and IncorpX, describe the same rule as a significant change because it moves reporting from a best-practice exercise to a fixed deadline with no room for late filing once the portal cut-off is crossed.
Security requirements have also become more demanding. According to Tally Solutions, two-factor authentication is now compulsory for access to the e-invoice and e-way bill systems, and the firm says this applies to all taxpayers from 1 April 2025 regardless of turnover. GST Consultancy similarly notes the move towards multi-factor authentication, reflecting a wider push by tax administrators to reduce fraud and prevent unauthorised use of GST identification numbers.
The commercial risks of getting it wrong are substantial. Tally Solutions says missing e-invoicing obligations can trigger penalties under the CGST Act, while also disrupting a buyer’s ability to claim input tax credit. Easedesk and GST Batao add that e-invoice data also feeds into e-way bill generation, so a missing or invalid invoice can cause delays in the movement of goods as well as accounting complications. For suppliers, that can quickly become a customer-retention issue if corporate buyers decide the compliance risk is not worth taking.
Advisers generally say the safest approach is to check turnover history carefully, connect billing systems directly to the Invoice Registration Portal and set internal deadlines well ahead of the 30-day limit. Tally Solutions recommends reviewing aggregate turnover from 2017-18 onwards and using accounting software that can generate the invoice reference number and QR code automatically, while other guides suggest firms above the ₹10 crore threshold should aim to process invoices within a week of issue to avoid last-minute failures. For businesses still adapting to the rules, the message from the market is consistent: automation is now part of tax compliance, not just a convenience.
Disclaimer: This article is intended to inform and educate, not to recommend or endorse any financial product, investment or strategy. Please consider your own financial circumstances and seek professional advice where appropriate before making financial decisions.





