GST E-Invoice 5 Crore Rule: Major Changes from 1 January 2027

The Short Answer

The ₹5 crore e-invoice threshold has not changed. The scope has.

From 1 January 2027, if your aggregate turnover crossed ₹5 crore in any year since FY 2017-18, you must generate an IRN for two more documents:

• Self-invoices for purchases from unregistered suppliers where you pay GST under reverse charge (RCM)
• Self-invoices for import of services

The legal basis is Notification No. 04/2026–Central Tax, dated 26 October 2026, effective 1 January 2027.

Your finance team already runs e-invoicing on sales. Your purchase side, the RCM register, probably still sits in Excel. You have under 60 days to move it into the IRP system. This guide shows you who is covered, what to fix, and how to avoid losing input tax credit.

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What Is the GST E-Invoice ₹5 Crore Rule?

E-invoicing applies to you if your aggregate turnover exceeded ₹5 crore in any financial year from FY 2017-18 onwards. This test comes from Notification No. 10/2023–Central Tax, in force since 1 August 2023.

Three points decide applicability:

• PAN level, not GSTIN level. Add the turnover of every GSTIN under one PAN across India.
• Any year counts. Crossed ₹5 crore in FY 2021-22 and fell to ₹4 crore later? E-invoicing still applies.
• “Exceeds” means above. The notification says turnover exceeding ₹5 crore. A business at exactly ₹5,00,00,000 sits outside on a plain reading, even though the GST Council press release says “₹5 crore and above”.

How the threshold came down:

The January 2027 change does not touch this table. It widens the list of documents a covered business must register on the IRP.

What Changes from 1 January 2027

Three official steps built this change:

1. 8 October 2026: The 57th GST Council meeting recommended e-invoicing for RCM purchases from unregistered persons and import of services, for taxpayers with turnover of ₹5 crore and above.
2. 16 October 2026: GSTN Advisory No. 678 introduced two new supply type codes, RCMDOM and RCMIMP, and opened sandbox testing on all six IRPs.
3. 26 October 2026: Notification No. 04/2026–Central Tax amended Notification No. 13/2020–Central Tax to add the two new transaction types from 1 January 2027. Notification No. 05/2026–Central Tax moves the Form GST INV-01 schema from Version 1.1 to Version 1.2 from the same date.

Before and after, at a glance:

How the new flow works:

1. You receive goods or services under RCM, or import a service.
2. You raise a self-invoice in your ERP.
3. You report it to an IRP with supply type RCMDOM or RCMIMP.
4. The IRP validates it and returns an IRN and signed QR code.
5. You pay the RCM tax in cash through GSTR-3B and claim ITC.

Production status as of 3 November 2026: GSTN has not yet announced the live production date. The advisory says the date and technical guidelines will follow. The legal effective date of 1 January 2027 stands.

Who Is Covered and Who Is Not

You are covered if both of these are true:

• Your aggregate turnover exceeded ₹5 crore in any FY from 2017-18 onwards.
• You buy from unregistered suppliers under RCM, or you import services.

For domestic purchases, two conditions must meet together. The supplier is unregistered. And you pay tax under reverse charge, under Section 9(3) or 9(4) of the CGST Act, or Section 5(3) or 5(4) of the IGST Act. A purchase from an unregistered supplier with no RCM liability needs no self-invoice and no IRN.

Not covered, based on the existing exclusions in Notification No. 13/2020–Central Tax:

• SEZ units
• Government departments and local authorities
• Insurers, banks, financial institutions and NBFCs
• Goods transport agencies (as suppliers)
• Passenger transport service providers
• Cinema admission services in multiplex screens

Below ₹5 crore? Nothing changes for you. You still raise the self-invoice within 30 days under Rule 47A. You do not need an IRN for it.

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Real Examples: Which Bills Now Need an IRN

Take a private limited company in Bengaluru with aggregate turnover of ₹12 crore. Here is how its regular RCM bills change from January 2027.

USD converted at an assumed ₹88 per USD.

This one company would generate around 30 extra IRNs a year on rent, cloud software and director fees alone. Count your recurring RCM vendors now.

Two 30-Day Clocks You Must Track

Many teams mix these up. They are separate rules.

Worked timeline:

1. 1 February 2027: You receive legal services from an unregistered advocate.
2. 3 March 2027: Last date to issue the self-invoice under Rule 47A.
3. About 2 April 2027: Last date to report it on the IRP, if the invoice is dated 3 March and the ₹10 crore window applies.

GSTN has not yet confirmed whether the IRP window applies to RCMDOM and RCMIMP. Plan as if it does. Do not treat the two clocks as a 60-day buffer. Set an internal rule: self-invoice and IRN within 7 days of receipt.

Transition point: a service received on 20 December 2026 and self-invoiced on 5 January 2027 falls inside the new rule on the safer reading. The invoice date drives the e-invoice requirement. Clear December RCM bills before 31 December 2026 where you can.

What Happens If You Miss It

The tax stays payable whether you generate an IRN or not. The real damage sits elsewhere.

• Invalid invoice. Under Rule 48(5) of the CGST Rules, an invoice issued by a covered person without an IRN is not treated as an invoice.
• ITC at risk. Your RCM credit rests on the self-invoice. If the document is invalid, the department has grounds to deny the credit. You pay the tax in cash and lose the matching credit.
• Penalty exposure. Officers might invoke Section 122 (₹10,000 or the tax involved, whichever is higher) or Section 125 (up to ₹25,000). Whether these apply to a recipient’s self-invoice is open to argument.
• No transition relief. Notification 04/2026 has no grace period or saving clause.

The cost in rupees, using the rent example above:

One vendor, one compliance gap, ₹4.32 lakh of blocked credit a year.

Your 10-Step Checklist Before 1 January 2027

• ☐ Confirm aggregate turnover at PAN level for every year from FY 2017-18 to FY 2025-26.
• ☐ Pull your RCM ledger for the last 12 months. Split it into domestic purchases from unregistered persons and import of services.
• ☐ List recurring RCM vendors: landlords, advocates, directors, transporters, foreign software and consultants.
• ☐ Capture GST registration status at vendor onboarding. A supplier who registers later moves out of RCMDOM.
• ☐ Ask your ERP or GSP vendor (Tally, Zoho, SAP or others) for a written date for RCMDOM, RCMIMP and schema Version 1.2 support.
• ☐ Test sample self-invoices on the IRP sandbox.
• ☐ Set an internal rule: self-invoice and IRN within 7 days of receipt.
• ☐ Clear December 2026 RCM self-invoices before 31 December 2026.
• ☐ Reconcile every month: IRN register vs GSTR-3B Table 3.1(d) vs ITC in Table 4(A)(2) and 4(A)(3).
• ☐ Watch the e-invoice portal for the production date, the NIC release note and the GSTN webinar.

Get Ready with Chhota CFO

You have under 60 days. Chhota CFO helps MSMEs and startups map RCM vendors, test e-invoice flows with your ERP, and reconcile GSTR-3B before the deadline.

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