Aggregate Turnover for E-Invoicing, PAN-Wise
Four GST registrations, each comfortably under ₹5 crore on its own — and still mandated, because the ₹5 crore rule was never designed to be checked one registration at a time.
GST E-Invoice Applicability Checker
Enter your combined PAN-wide turnover, not just one GSTIN's.
The short answer
Aggregate annual turnover (AATO) is summed across every GSTIN registered under the same PAN, nationwide — not checked per registration. A business that looks small state-by-state can still be mandated once its GSTINs are added together.
Worked example — a pharma distributor with four GSTINs
A distributor registered separately in four states, each comfortably under ₹5 crore on its own:
| GSTIN (state) | AATO |
|---|---|
| Maharashtra | ₹1.8 crore |
| Gujarat | ₹1.5 crore |
| Karnataka | ₹1.0 crore |
| Delhi | ₹1.0 crore |
| PAN-wide total | ₹5.3 crore |
No single GSTIN here comes anywhere close to ₹5 crore — the largest is ₹1.8 crore. But the rule checks the PAN-wide total, which is ₹5.3 crore, exceeding the threshold. The result: e-invoicing becomes mandatory for all four GSTINs, including the ones sitting at just ₹1 crore individually. This is the single biggest gap between how business owners intuitively check their own exposure (one registration at a time) and how the rule actually works.
Why this exists
Checking turnover per-GSTIN would let a business split itself into several smaller registrations purely to stay under the threshold, without changing anything about its actual size or operations. PAN-level aggregation closes that loophole — what matters is the underlying business's real scale, not how many GST registrations it happens to hold.
Once crossed, it's permanent — PAN-wide, not just for the GSTIN that tipped it over
The same distributor, five years later: turnover has fallen and the combined PAN-wide AATO is now ₹3.1 crore, well under ₹5 crore. E-invoicing is still mandatory for all four GSTINs. Since the PAN-wide total exceeded ₹5 crore in at least one year since 2017-18, the mandate doesn't switch off when turnover falls — there's no exit mechanism in GST law for this.
What counts toward the aggregate figure
Aggregate turnover generally follows the standard GST definition — taxable, exempt, and export supplies combined, excluding the tax components themselves (CGST, SGST, IGST, cess). This article doesn't attempt to model every edge case of that definition (specific treatment of certain exempt supplies, for instance); if your PAN-wide total is close to ₹5 crore, get the exact figure confirmed by a GST practitioner rather than estimating.
Checking your own PAN-wide total
Add up your highest-ever AATO across every GSTIN you hold, for each year since 2017-18, and check if any single year's total exceeded ₹5 crore. See the ₹5 crore rule explained for the exact boundary, and the turnover limit article for the full history of how this threshold has moved.
FAQ
Per PAN. Aggregate annual turnover (AATO) sums the turnover of every GSTIN registered under a single PAN across India, then checks that total against the ₹5 crore threshold — not each registration's turnover individually.
All of them. Once the PAN-wide aggregate exceeds ₹5 crore, e-invoicing becomes mandatory for every GSTIN under that PAN — including ones whose individual turnover is well below ₹5 crore on their own.
Yes — aggregation is PAN-wide and nationwide, not limited to GSTINs within a single state. A business registered separately in four different states has its turnover from all four summed together for this purpose.
It doesn't matter — the mandate is permanent once triggered. If your highest-ever AATO (PAN-wide) exceeded ₹5 crore in any year since 2017-18, e-invoicing stays mandatory even if your current combined turnover is much lower now.
Aggregate turnover for this purpose generally follows the standard GST definition of aggregate turnover, which includes taxable, exempt, and export supplies (excluding taxes themselves). This article doesn't model every edge case of that definition — confirm your exact figure with a GST practitioner if you're close to the line.
Last verified: 16 Aug 2026
Sources: Notification No. 10/2023–Central Tax (amending Notification No. 13/2020–Central Tax); corroborated across multiple independent sources citing the same notification.
This is indicative information, not a substitute for professional advice. It does not model every edge case of the "aggregate turnover" definition. Confirm your exact PAN-wide figure and obligation with a qualified GST practitioner before making compliance decisions.