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GST invoicing utility

GST E-Invoice Applicability Checker

Reviewed by Finin2min Editorial Desk · Last reviewed 11 September 2026

Check the ₹5 crore historical-turnover mandate, covered documents, exempt supplier classes and the ₹10 crore 30-day reporting restriction.

2-minute answer

GST e-invoice applicability checker for the ₹5 crore threshold, exempt classes and 30-day IRP reporting rule.

Current-law check: This page was reviewed for currentness on the date shown. Verify any rate, threshold, deadline or regulatory status against the linked primary authority before acting.

Use this page to

  • Understand the calculation or decision rule
  • Test inputs and assumptions
  • Compare a base case with an alternative scenario
  • Verify the result against primary documents before acting

Practical control

Use the tool or guide as a decision aid, then verify the underlying assumption, product term, tax rule or statutory requirement before committing money or filing.

Official / primary sources

Related Finin2min guidance

Reviewed for currentness, usability and source quality on 11 September 2026. Where an official source changes after this date, the official source prevails.

Check e-invoice applicability

Applicability result

Check historical turnover, supplier class and document type.

How This Is Calculated

E-invoicing is mandatory once a GST-registered business's Aggregate Annual Turnover (AATO) in any preceding financial year exceeds the notified threshold — once triggered, it generally continues to apply in future years even if turnover later drops below the threshold. It applies to covered document types (like B2B tax invoices), and specific categories (like SEZ units, certain government departments, or specific service types) may be exempt even above the threshold.

Frequently Asked Questions

Does e-invoicing apply based on current turnover or any past year? ▼
It's based on AATO exceeding the threshold in any preceding financial year (from a notified base year onward), not just the current year — so once your turnover has crossed the threshold in any qualifying year, e-invoicing obligations generally continue going forward.
Does e-invoicing apply to B2C invoices? ▼
The core e-invoicing mandate covers B2B tax invoices, debit notes and credit notes. B2C supplies are generally outside the e-invoicing requirement, though QR code requirements can apply separately for large B2C suppliers.
What happens if e-invoicing is required but not done? ▼
An invoice that should have been e-invoiced but wasn't is not treated as a valid tax invoice, which can jeopardize the recipient's ability to claim input tax credit on it, in addition to penalty exposure for the supplier.

Related guidance: GST E-Way Bill Applicability Checker | Finin2min · GST Registration Applicability Checker | Finin2min

E-invoice current operational gate

The e-invoice mandate applies to notified registered persons whose AATO crossed ₹5 crore in any relevant preceding financial year from 2017-18 onward, subject to notified supplier exemptions. From 1 April 2025, taxpayers with AATO of ₹10 crore or more face the IRP’s 30-day reporting restriction for covered invoices, credit notes and debit notes.

Check supplier class and document type—not merely recipient GSTIN. An SEZ developer can receive an e-invoice while an SEZ unit is among notified supplier exemptions. Preserve IRN/QR-code and cancellation trail.

Input integrity

  • Use source documents rather than approximate memory.
  • Confirm period, units, tax regime/category and sign conventions.
  • Test zero, threshold and just-above-threshold cases where relevant.

Output interpretation

  • Separate arithmetic output from legal eligibility/classification.
  • Preserve assumptions and the official-source date.
  • Use the linked detailed guide for exceptions and evidence.

Primary-source starting points

Reviewed 22 August 2026. Always test later amendments, corrigenda and portal implementation before a live filing or transaction.

Methodology, assumptions and sources

Scope: Checks whether e-invoicing is mandatory for a registered person, based on their aggregate turnover against the current e-invoicing threshold notified under Rule 48(4) of the CGST Rules.

Calculation logic

  1. Compare the taxpayer's aggregate turnover (in any preceding financial year from the appointed base year onward, per the notification's 'once crossed, always applicable' rule) against the currently notified e-invoicing threshold.
  2. Where turnover exceeds the threshold, flag e-invoicing as mandatory for B2B supplies, exports, and (per current rules) supplies to SEZ units, via a registered Invoice Registration Portal (IRP).
  3. Check applicable exemptions (e.g., specific categories such as banking/insurance companies, goods transport agencies, passenger transport services, and government departments/local authorities, which are exempted from e-invoicing by notification regardless of turnover).

Inputs and assumptions

Exclusions and edge cases

Sources

Review status: reviewed and approved by CA Nikhil Gupta on 5 July 2026.

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© 2026 Finin2min · Educational screening only · Official law, notification and portal records prevail.

Guides that use this calculator

Background, worked examples and the rules behind these numbers.