E-Invoice Limit: The ₹5 Crore Turnover Threshold Explained

"What's the e-invoice limit?" has had a different answer almost every year since 2020 — the threshold dropped from ₹500 crore to ₹100 crore to ₹50 crore to ₹20 crore to ₹10 crore, and since 1 August 2023 it sits at ₹5 crore aggregate annual turnover. Each drop pulled thousands of genuinely small businesses into a system designed for corporates, so knowing exactly how the limit works is no longer optional trivia.

The rule in one paragraph

If your aggregate turnover in any financial year from 2017-18 onwards exceeded ₹5 crore, you must generate e-invoices for all B2B supplies (and exports/credit notes/debit notes to registered persons): each invoice is reported to the Invoice Registration Portal (IRP), which returns an IRN (Invoice Reference Number) and a signed QR code that must appear on the invoice. No IRN = legally, no invoice.

The traps inside "aggregate turnover"

1. It's PAN-level, not GSTIN-level. All your registrations across states combine. Two branches doing ₹3 crore each = ₹6 crore aggregate = e-invoicing applies to both.

2. It includes exempt supplies and exports. Aggregate turnover counts taxable + exempt + export turnover. A business with ₹4 crore taxable and ₹1.5 crore exempt supplies has crossed the line.

3. "Any year since 2017-18." Cross ₹5 crore once — even in one exceptional year, even if you've shrunk since — and the obligation attaches from the start of the next year, permanently.

4. It applies from the year after crossing. Cross the limit during FY 2025-26 → e-invoicing mandatory from 1 April 2026.

What e-invoicing does *not* cover

• B2C invoices — no IRN needed (though businesses above ₹500 crore must print a dynamic UPI QR on B2C invoices — a separate rule people conflate)
• Exempt entities regardless of size: banks/NBFCs/insurers, GTA (goods transport agencies), passenger transport, cinema admission, SEZ units, and government departments
• Bills of supply, delivery challans, receipt vouchers for advances

So a wedding venue billing families (B2C) doesn't e-invoice those bills even above ₹5 crore — but the same venue invoicing a corporate offsite (B2B) must.

Crossing the line: what changes operationally

The day e-invoicing applies to you:

1. B2B invoices go through the IRP (via your accounting software's integration, the free offline utility, or GSP APIs) — the IRP validates, assigns the IRN, returns the QR
2. Print the QR and IRN on the invoice along with the usual tax-invoice fields
3. A 30-day reporting window applies (for taxpayers above ₹10 crore, invoices must reach the IRP within 30 days of invoice date; expect this discipline generally)
4. Your GSTR-1 auto-populates from IRP data — the silver lining; filing gets easier
5. Handwritten/Word invoices are effectively dead for B2B — the handwritten invoice era ends at this threshold

Penalty for non-compliance: up to ₹10,000 per invoice for non-generation, ₹25,000 for incorrect e-invoicing — and your buyer's ITC is at risk on an invoice that legally doesn't exist. Buyers above the threshold now routinely refuse non-IRN invoices from applicable vendors.

Reality check for freelancers and studios

₹5 crore of turnover is roughly ₹40+ lakh a month of billing — most independent photographers, makeup artists and small studios are nowhere near it, and for them e-invoicing is simply not applicable. The people who should watch the line:

• Multi-city event companies and large caterers (aggregate across GSTINs!)
• Equipment rental businesses with high-value inventory turnover
• Anyone whose one great year crossed ₹5 crore — the obligation doesn't reset

If that's not you, your compliance surface remains the ordinary one: correct invoice format, sequential numbering, timely GSTR-1 and 3B. The e-invoicing overview covers the system in more depth, and there's a related-but-different timing rule — the e-invoice time limit — worth knowing once you're in the regime.

Below the threshold, your invoices still need to be right — BrightDesk's GST invoice generator handles compliant formatting free, and BrightDesk keeps the sequential, searchable invoice register that makes any future transition (to e-invoicing, to a CA, to an audit) painless.