GST E-Invoicing Setup and Support
Set up GST e-invoicing with IRN and QR code generation, and keep your invoices compliant with the IRP.
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GST e-invoicing is the system in which business-to-business invoices are reported to the Invoice Registration Portal (IRP), which returns an Invoice Reference Number (IRN) and a signed QR code. It applies to registered businesses whose aggregate turnover crosses the threshold notified by the government, and that limit has been lowered in phases, so more businesses keep coming into scope. Our team assesses whether you are covered, helps you choose how to generate e-invoices from your billing software, tests the schema, and sets up a routine for cancellations and corrections so your invoices remain valid for buyers claiming credit.
Who provides this service: our team of Chartered Accountants.
Who Needs GST E-Invoicing?
- Businesses whose aggregate turnover is at or above the notified e-invoicing limit
- Growing companies approaching the threshold that want to prepare their systems early
- Exporters and SEZ suppliers issuing invoices that must be reported
- Businesses changing billing or ERP software that must keep invoicing compliant
- Accounts teams struggling with IRP validation errors
Key Benefits
- Clear opinion on whether e-invoicing applies to your business and from when
- Guidance on generating e-invoices from your billing or ERP system using the notified schema
- Testing of sample invoices on the sandbox before you go live
- Defined handling for credit notes, debit notes and invoice cancellations
- Reduced buyer disputes because valid IRN and QR code reach your customers
- Alignment between e-invoice data, GSTR-1 and e-way bill generation
How It Works
Check applicability
We review your aggregate turnover across GSTINs under the same PAN, your nature of supplies and the notified exemptions, and tell you in writing whether e-invoicing is mandatory or optional for you.
Register on the e-invoice system
Your GSTIN is enabled on the e-invoice portal, API access is requested if you plan to integrate software, and login details are set up with proper user roles.
Map invoice data to the schema
We map your invoice fields such as party details, HSN, tax values and addresses to the notified e-invoice schema so the data uploads without validation errors.
Test in the sandbox
Sample sales invoices, credit notes and export invoices are tested on the sandbox. Typical errors like wrong GSTIN formats, pin codes or rounding differences are fixed before going live.
Go live and print the IRN and QR code
Invoices are reported to the IRP, the IRN and QR code come back and are printed on your invoice format. Your team is briefed on what to do if the portal is slow.
Monitor, cancel and reconcile
We set up a monthly check that every eligible invoice has an IRN, handle cancellations within the limited window the portal allows, and reconcile e-invoice data with GSTR-1.
Documents Required
- GST registration certificate and portal access
- Aggregate turnover details for all GSTINs under the PAN
- Sample sales, credit note and debit note formats
- Billing or ERP software details and version
- Master data of customers with GSTIN and addresses
- HSN or SAC mapping for products and services
- List of branches, warehouses and ship-from addresses
- Details of exports or supplies to SEZ units, if any
Timeline and Fees
Indicative timeline: A basic set-up with an existing billing tool can often be completed within a few working days. Software integration, customisation and testing take longer and depend on your system and on the performance of the government portal.
Professional fee: The fee depends on the number of GSTINs, your invoicing software, the invoice volume and whether software customisation is needed. We provide a written scope after a quick review of your current invoicing process.
What Can Go Wrong if This Is Missed or Done Incorrectly
- An invoice issued without a required IRN may be treated as invalid for the purpose of claiming credit
- Failure to follow the invoicing rules can attract penalty under the GST law
- Mismatch between e-invoice data and returns can trigger system-generated notices
- Repeated invoice errors can disrupt e-way bill generation for your consignments
Frequently Asked Questions
Is GST e-invoicing mandatory for my business?
It is mandatory for registered businesses whose aggregate turnover exceeds the limit notified by the government, with certain classes of taxpayers exempted. The threshold has been reduced in stages, so check the latest notification on the GST portal or ask our team to confirm for your GSTIN.
What are IRN and the QR code on an e-invoice?
The IRN is a unique reference number generated by the Invoice Registration Portal when you report an invoice. It comes with a digitally signed QR code that is printed on the invoice. Together they prove the invoice was registered, and the data flows on to the GST return system.
Can I cancel an e-invoice after generating the IRN?
Cancellation on the invoice registration portal is allowed only within a limited window after generation, as set by the system. After that period the invoice cannot be cancelled there, and a credit note or amendment in the return is usually the way to correct it. Check the current rule on the portal.
Do I need special software to generate e-invoices?
Not necessarily. Many businesses use billing software that connects to the portal through an interface, and smaller volumes can be handled through offline tools or the web utility. The right choice depends on your invoice volume and systems, which is something our team helps you decide.
Which invoices are covered by e-invoicing?
Broadly, business-to-business supplies, exports and supplies to SEZ units by covered taxpayers, along with related credit and debit notes. Business-to-consumer invoices are not reported in the same way, though a dynamic QR code may apply in some cases. The notification lists the exact coverage.
What happens if I issue invoices without an IRN?
An invoice that should have an IRN but does not is not treated as a valid tax invoice under the rules, which can stop your buyer from claiming credit and expose you to penalty provisions. It is safer to fix the process early than to correct invoices after the fact.
Official Sources
Rules, forms and fees change. Check the current position on the official portal:
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Speak with a qualified professional about your gst e-invoicing setup and support requirements.
Last reviewed: . Laws, fees and procedures change; check the official portal before you act.
Disclaimer: The information on this page is for general informational purposes only and does not constitute professional legal, tax or compliance advice. Requirements vary by situation. Please consult a qualified CA or CS for advice specific to your needs. Government fees and timelines are subject to change; verify with the relevant authority before proceeding.