E-invoicing Rs 5 crore limit: cross it once and it applies forever — plus the 30-day IRN trap

A client asked last month: "Our turnover is ₹3 crore now, so e-invoicing must have stopped, right?"

No.

And that question comes up so often that it suggests most businesses have missed the single most important feature of the e-invoicing threshold.

# The threshold — and which year it tests

Threshold: aggregate annual turnover above ₹5 crore. Unchanged since 1 August 2023.

But the threshold is not the interesting part. What matters is which year is tested:

Any financial year from FY 2017-18 to the present.

Cross ₹5 crore once, in any one of those years — e-invoicing applies to you today.

# Turnover is aggregated at PAN level, not GSTIN level

This is the second major error.

If you hold three GSTINs across three states and each has ₹2 crore of turnover, your turnover is not ₹2 crore — it is ₹6 crore.

Aggregation happens at PAN level. Each GSTIN is not a separate business; all registrations under one PAN combine.

# The 30-day rule is a different slab

Here too, two things get conflated.

So if your turnover is ₹6 crore, you must generate e-invoices, but the 30-day limit does not apply to you.

At ₹12 crore, both apply.

# What happens when 30 days pass

This is not simply a late fee:

1. The portal rejects the upload
2. No IRN is generated, and no QR code
3. Without an IRN the invoice is not a valid document under GST
4. Your buyer cannot claim ITC on it

# What e-invoicing covers

There is a separate dynamic QR code requirement for B2C invoices for large-turnover businesses. That is not e-invoicing — different rule, different purpose. Conflating the two is common.

# A one-time check worth doing now

Thirty minutes, and it settles the question for the year:

1. List every GSTIN under your PAN
2. Compute aggregate turnover for each year from FY 2017-18 — all GSTINs combined
3. Check whether any year crossed ₹5 crore
4. If yes → e-invoicing applies, today
5. If any year also crossed ₹10 crore → the 30-day rule applies too

The GST portal does show e-invoice enablement status, but it is not always current. Your own computation is more reliable.

Written by

Prabhakar Kumar

Chartered Accountant (ICAI, Nov 2019)

Founder of VittSphere Technologies. Practicing CA serving 200+ MSME clients across Pune. 86% win-rate at AO and CIT(A) level tax appeals. Writes on Indian taxation, capital gains, and personal finance.