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Is Your Business e-Invoicing Compliant?
GST e-Invoicing is mandatory for businesses with turnover above ₹5 crore. Non-compliance attracts 100% tax penalty and ITC denial for your buyers. Get compliant today!
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Our GST experts handle the complete e-Invoicing implementation - from IRP registration and API setup to ERP integration, sandbox testing, and production go-live.
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GST e-Invoicing is the government-mandated system of electronically authenticating B2B invoices through the Invoice Registration Portal (IRP) managed by the National Informatics Centre (NIC). Under Rule 48(4) of the CGST Rules, 2017, specified categories of GST-registered businesses must generate e-Invoices for all B2B transactions, export invoices, supplies to SEZ units, and debit/credit notes issued to registered persons.
The e-Invoicing system works by validating invoice data submitted by businesses in a standardized JSON format, generating a unique Invoice Reference Number (IRN), and adding a QR code along with a digital signature to each invoice. This authenticated e-Invoice data is then auto-populated in the supplier's GSTR-1 return and the buyer's GSTR-2A/2B, eliminating manual data entry and significantly reducing reconciliation errors across the GST ecosystem.
As of 2026, e-Invoicing is mandatory for all businesses with an aggregate annual turnover exceeding ₹5 crore in any financial year from 2017-18 onwards. The threshold has been progressively reduced from ₹500 crore in October 2020, and the GST Council is expected to further lower it to bring more businesses under the compliance net. Non-compliance attracts severe penalties including 100% of the tax amount or ₹10,000 per invoice, whichever is higher, and denial of Input Tax Credit (ITC) to buyers.
At IncorpX, we provide comprehensive GST e-Invoicing setup and compliance services starting at just ₹4,999. Our team of certified GST professionals handles everything from IRP registration and API credential setup to ERP integration, sandbox testing, and production go-live - ensuring your business is fully compliant with the e-Invoicing mandate. Already registered for GST? Explore our GST Return Filing services for end-to-end compliance support.
What is GST e-Invoicing?
GST e-Invoicing (Electronic Invoicing) is a system introduced by the Government of India under the CGST Rules, 2017 where B2B invoices generated by a business are electronically uploaded to the Invoice Registration Portal (IRP) for authentication. The IRP - operated by the National Informatics Centre (NIC) at einvoice1.gst.gov.in - validates the invoice data against GSTN records, generates a unique 64-character Invoice Reference Number (IRN), embeds a QR code, and appends a digital signature before returning the authenticated invoice to the supplier.
It is important to understand that e-Invoicing does not mean generating invoices on a government portal. Businesses continue to create invoices using their own ERP systems, accounting software, or billing applications. The e-Invoice system only validates and certifies these invoices through the IRP. Think of it as a government authentication layer on top of your existing invoicing process.
Key Components of GST e-Invoicing:
Invoice Reference Number (IRN):
A unique 64-character hash generated for every e-Invoice, ensuring no duplicate invoices exist in the GST system.
QR Code:
Contains encrypted invoice parameters for instant verification by tax officers and recipients via the GST Verify app.
Digital Signature:
The IRP digitally signs every e-Invoice, preventing any post-generation tampering of invoice data.
JSON Schema:
Standardized data format (Version 1.1) defined by GSTN for consistent invoice data exchange with the IRP.
Did You Know?
An invoice issued without a valid IRN by a business covered under the e-Invoicing mandate is treated as not issued under GST law. This means the supplier faces a penalty of 100% of the tax due, and the buyer cannot claim Input Tax Credit (ITC) on such invoices - even if the actual goods or services were supplied and payment was made.
e-Invoicing Threshold Timeline in India:
The GST Council has progressively reduced the e-Invoicing threshold to bring more businesses under the compliance net. Here is the complete timeline of applicability changes:
Effective Date
Turnover Threshold
Notification
Impacted Businesses
1st October 2020
₹500 Crore and above
Notification No. 13/2020
Large enterprises and MNCs
1st January 2021
₹100 Crore and above
Notification No. 88/2020
Large and upper mid-market businesses
1st April 2021
₹50 Crore and above
Notification No. 05/2021
Mid-market companies
1st April 2022
₹20 Crore and above
Notification No. 01/2022
Upper-mid SMEs
1st October 2022
₹10 Crore and above
Notification No. 17/2022
Mid-level SMEs
1st August 2023
₹5 Crore and above
Notification No. 10/2023
Small & medium businesses (current threshold)
Note: The aggregate annual turnover is calculated based on all GSTINs under a single PAN across India. If your turnover exceeded the threshold in any financial year from 2017-18 onwards, you are required to comply. The GST Council is expected to further reduce the threshold, potentially to ₹1 crore. Businesses below the current limit should proactively prepare for compliance. Keep your GST returns updated to accurately track your turnover.
Important Update!
The time limit for reporting e-Invoices on the IRP portal has been set at 30 days from the date of the invoice for businesses with turnover above ₹100 crore (effective from 1st November 2023, Notification No. 17/2023). This means such businesses must report their invoices to the IRP within 30 days - delayed reporting will not be permitted.
Who Must Comply with GST e-Invoicing?
e-Invoicing applies to specific categories of registered persons and transaction types. Here's a detailed breakdown:
Transactions Covered Under e-Invoicing:
B2B Supply: All tax invoices for supply of goods and services to registered persons (B2B)
Export Invoices: Invoices for supplies outside India (with or without payment of IGST)
SEZ Supplies: Invoices for supplies to Special Economic Zone (SEZ) units and developers
Debit Notes: Debit notes issued to registered persons for additional tax or value adjustments
Credit Notes: Credit notes issued to registered persons for returns, discounts, or corrections
Entities Exempt from e-Invoicing:
Exempt Category
Reason for Exemption
Banks and Financial Institutions
Complex financial transaction structures not suited to standard e-Invoice format
Insurance Companies
Policy-based invoicing with unique data requirements
Non-Banking Financial Companies (NBFCs)
Financial service-specific billing patterns
Goods Transport Agency (GTA)
Transport document format differs from standard invoice
SEZ Units (as suppliers)
SEZ units are treated as outside the domestic tax territory
Government Departments
Government entities have separate billing mechanisms
Local Authorities
Municipal and panchayat bodies follow different invoicing norms
Passenger Transport Services
Ticket-based billing not compatible with B2B e-Invoice format
Composition Scheme Dealers (Section 10)
Not required to issue tax invoices; issue Bill of Supply instead
e-Invoice Process Flow - How It Works:
The GST e-Invoicing process involves a seamless flow between your business systems and the government's Invoice Registration Portal. Here is the complete step-by-step process:
Step 1: Generate Invoice in Your ERP/Software
Create the invoice in your existing ERP, billing software, or accounting system (e.g., Tally, SAP, Zoho, Busy) as you normally would. Ensure all mandatory fields are filled: supplier GSTIN, recipient GSTIN, invoice number, date, HSN codes, quantities, rates, taxable value, and applicable tax amounts (CGST/SGST/IGST). The invoice data must conform to the e-Invoice JSON schema (Version 1.1) defined by GSTN.
Step 2: Push Invoice Data to IRP via API
Your ERP system transmits the invoice data to the Invoice Registration Portal (IRP) at einvoice1.gst.gov.in through a secure REST API. The API uses your registered Client ID and Client Secret for authentication. Alternatively, you can use the bulk upload facility on the portal or route through a GST Suvidha Provider (GSP). The transmission is encrypted and secure.
Step 3: IRP Validates Invoice Data
The IRP validates the received invoice data against GSTN records: it verifies that both supplier and recipient GSTINs are active, checks for duplicate invoice numbers, validates HSN codes, verifies tax calculations, and ensures all mandatory fields are present. If any validation fails, the IRP returns specific error codes indicating the issue for correction.
Step 4: IRN Generation with QR Code & Digital Signature
Upon successful validation, the IRP generates a unique 64-character Invoice Reference Number (IRN) using a hash of the supplier GSTIN, financial year, document type, and document number. The IRP also generates a QR code containing key invoice parameters and appends a digital signature. The complete authenticated e-Invoice is returned to the supplier's system.
Step 5: Auto-Population in GSTR-1 & GSTR-2A/2B
The authenticated e-Invoice data is automatically shared with the GST portal. The supplier's GSTR-1 is auto-populated with the invoice details (Table 4A for B2B, Table 6A for exports, Table 9B for credit/debit notes). Simultaneously, the buyer's GSTR-2A/2B reflects the same data for ITC claim purposes.
Step 6: Buyer Receives Authenticated e-Invoice
The buyer receives the e-Invoice with the IRN, QR code, and digital signature - either directly from the supplier's system or through the GST portal. The buyer can verify the authenticity of the invoice by scanning the QR code using the GST Verify app or any standard QR reader. The authenticated invoice serves as a valid tax document for ITC claims.
Step 7: e-Way Bill Auto-Generation (If Applicable)
If the e-Invoice includes e-Way Bill Part A details (for goods movement above ₹50,000), the system can auto-generate the e-Way Bill number simultaneously with the IRN. The supplier only needs to update Part B (vehicle number and transporter details) on the e-Way Bill portal. This eliminates duplicate data entry for transportation compliance.
Let our experts handle the complete e-Invoicing implementation for your business!
Technical Integration for e-Invoicing:
Integrating your business systems with the e-Invoice IRP requires careful planning. Here are the three integration methods available:
1. Direct API Integration
Connect your ERP directly to the IRP using REST APIs. Best for businesses generating high volumes of invoices. Requires API credentials (Client ID & Client Secret) and development effort. Supports real-time IRN generation with automatic retry mechanisms.
2. Bulk Upload on Portal
Prepare invoices in the prescribed Excel or JSON template and upload on the e-Invoice portal. Suitable for small businesses with lower invoice volumes. Supports up to 500 invoices per batch upload with instant IRN generation.
3. GST Suvidha Provider (GSP)
Use third-party authorized software providers (ClearTax, Tally, Zoho, Busy) who handle the IRP integration. Ideal for businesses without in-house technical teams. GSPs provide user-friendly interfaces and higher throughput.
4. Sandbox Testing
The IRP provides a sandbox (testing) environment to validate your integration before going live. Test IRN generation, cancellation workflows, error handling, and QR code generation without affecting production data.
5. e-Invoice JSON Schema
All invoices must conform to the GSTN-defined JSON schema (Version 1.1). Includes mandatory fields: transaction details, seller/buyer info, item list with HSN codes, tax amounts, and document totals. Schema documentation is available on the IRP portal.
6. ERP Compatibility
Most major ERP and accounting software (SAP, Oracle, Tally Prime, Zoho Books, Busy, MARG) now have built-in e-Invoicing modules. Custom ERPs require API development. Ensure your software version supports the latest e-Invoice schema.
Documents & Data Required for e-Invoice Generation:
Every e-Invoice requires specific data fields to be submitted to the IRP. Here is a comprehensive list of mandatory and optional data elements:
Data Category
Field
Requirement
Details
Supplier Details
Supplier GSTIN
Mandatory
15-digit GST Identification Number of the invoice issuer
Legal Name
Mandatory
Legal name as registered on the GST portal
Address & PIN Code
Mandatory
Complete address with state code and 6-digit PIN
Recipient Details
Recipient GSTIN
Mandatory
15-digit GSTIN of the buyer (URP for export invoices)
Legal Name
Mandatory
Legal name of the buyer as registered on GST portal
Place of Supply
Mandatory
State code (01-37) determining CGST+SGST or IGST applicability
Document Details
Invoice Number
Mandatory
Unique invoice number (max 16 characters, alphanumeric)
Minimum 4 digits (6 digits for turnover above ₹10 crore)
Quantity & Unit
Mandatory
Number of units and unit of measurement (UQC code)
Rate & Taxable Value
Mandatory
Unit price and total taxable value per line item
Tax Amounts
Mandatory
CGST, SGST, IGST, and Cess amounts per line item
Document Total
Total Invoice Value
Mandatory
Sum of all taxable values, taxes, discount, and other charges
e-Way Bill
Transport Details
Optional
Transporter ID, distance, vehicle number (for Part A auto-generation)
Note: Ensure your GST registration details (legal name, trade name, address) are up-to-date on the GST portal. Mismatches between your invoice data and GSTN records will cause IRP validation failures. HSN codes must be verified against the GST HSN Master available on the GST portal.
e-Invoice Portal - Registration & Setup Guide:
The e-Invoice Portal (einvoice1.gst.gov.in) is the primary Invoice Registration Portal operated by NIC. Here's how to register and set up your account:
Step 1: Visit the e-Invoice Portal
Navigate to einvoice1.gst.gov.in (or any alternate IRP: einvoice2 through einvoice10). Click on 'Registration' in the top menu and select 'e-Invoice Enablement'. The portal will check your GSTIN eligibility based on your turnover data available with GSTN.
Step 2: Enter GSTIN & Verify
Enter your 15-digit GSTIN. The portal auto-fetches your legal name and trade name from the GST database. Verify your identity through OTP sent to the registered email address and mobile number linked to your GST registration. Both OTPs must be entered correctly.
Step 3: Create Username & Password
Create a unique username and password for your e-Invoice portal account. This is separate from your GST portal credentials. The password must meet security requirements (minimum 8 characters, mix of uppercase, lowercase, numbers, and special characters).
Step 4: Generate API Credentials
After logging in, navigate to 'API Registration'. Generate your Client ID and Client Secret which are required for API integration with your ERP. If using a GSP, you can provide these credentials to your software provider. API credentials are specific to your GSTIN and must be securely stored.
Step 5: Test on Sandbox
Before going live, use the sandbox (testing) environment provided on the portal to test your API integration. Generate test IRNs, validate error handling, test cancellation workflows, and verify QR code generation. The sandbox mirrors the production environment without affecting real data.
Step 6: Go Live in Production
Once testing is complete and all validations pass, switch to the production environment and start generating real IRNs for your business invoices. Monitor the initial batch closely for any issues and establish a regular workflow for your invoicing team. Set up error notification alerts for failed IRN generation attempts.
Penalties for e-Invoicing Non-Compliance:
Non-compliance with e-Invoicing provisions under the CGST Act, 2017 attracts severe penalties. Here are the consequences:
Violation
Penalty
Legal Provision
Additional Impact
Non-generation of e-Invoice
100% of tax due or ₹10,000, whichever is higher
Section 122(1)(i) of CGST Act
Invoice treated as not issued; buyer cannot claim ITC
Incorrect e-Invoice (wrong details)
₹25,000 per invoice
Section 122(1)(ii) of CGST Act
May trigger GST audit and scrutiny proceedings
ITC denial to buyer
Buyer loses ITC + interest at 18% p.a.
Section 16(2)(aa) of CGST Act
Buyer must reverse ITC already claimed with interest
Delayed e-Invoice reporting (above ₹100 Cr)
Invoice not accepted by IRP after 30 days
Notification No. 17/2023
Must issue fresh invoice and cancel the old one
Using fake or fraudulent e-Invoice
₹10,000 or tax amount, whichever is higher + prosecution
Section 132 of CGST Act
Criminal prosecution; imprisonment up to 5 years for tax evasion above ₹5 crore
Important: The most significant impact of non-compliance is ITC denial to your buyers. Buyers increasingly insist on proper e-Invoices because they cannot claim Input Tax Credit on invoices without valid IRN. This can lead to loss of business relationships and commercial disputes. Ensure timely compliance to protect both your business and your customers. Need help with compliance? Contact our GST services team.
What Are the Key Benefits of e-Invoicing Under GST?
GST e-Invoicing offers significant advantages for businesses, buyers, and the government. Here's how it transforms your invoicing and compliance workflow:
1. Auto GSTR-1 Population
e-Invoice data is automatically populated in your GSTR-1 return, eliminating hours of manual data entry and reducing filing errors significantly.
2. Reduced Data Entry Errors
Standardized JSON format and real-time IRP validation catch errors at the point of invoice generation, before they propagate to returns.
3. Faster ITC for Buyers
Buyers get immediate visibility of invoices in GSTR-2A/2B, enabling faster Input Tax Credit claims and reducing working capital blockage.
4. Tax Fraud Prevention
Unique IRN, digital signature, and real-time validation prevent duplicate invoices, fake GSTINs, and circular trading fraud.
5. e-Way Bill Integration
Auto-generate e-Way Bill Part A along with e-Invoice, eliminating duplicate data entry for goods transportation compliance.
6. Seamless Reconciliation
Seller's and buyer's data automatically match through the e-Invoice system, minimizing GSTR-2A/2B mismatches and reconciliation effort.
7. Faster Payment Cycles
Authenticated e-Invoices build trust between trading partners, enabling faster invoice acceptance and payment processing.
8. Real-Time Monitoring
Track invoice status, IRP acceptance, buyer acknowledgment, and GSTR-1 population in real-time through the e-Invoice portal dashboard.
Benefits of Choosing IncorpX for e-Invoicing:
Getting e-Invoicing right the first time saves your business from penalties, ITC denials, and operational disruptions. Here's why thousands of businesses trust IncorpX for their e-Invoicing setup:
End-to-End Setup
From IRP registration to production go-live, we handle every step of the e-Invoicing implementation. No technical expertise required from your side.
ERP Integration Support
We support integration with all major ERP/accounting software - Tally, SAP, Zoho, Busy, MARG, and custom solutions. API setup included.
Sandbox Testing
Thorough testing on the IRP sandbox environment before going live. We validate every error scenario to ensure zero failures in production.
100% Compliance
Stay fully compliant with the latest e-Invoicing notifications, threshold changes, and schema updates. We monitor regulatory changes for you.
Dedicated Expert Support
Assigned GST-certified professional for your business. Get instant resolution for IRP errors, validation failures, and technical issues.
Affordable Pricing
Complete e-Invoicing setup starting at ₹4,999. Transparent pricing with no hidden charges. Ongoing compliance support available.
Join 5,000+ businesses that trust IncorpX for GST e-Invoicing compliance!
Related Services for GST Compliance
GST e-Invoicing is one component of your overall GST compliance framework. IncorpX offers a comprehensive suite of GST services to keep your business fully compliant. Explore our related services:
Comprehensive GST advisory, audit support, annual return (GSTR-9) filing, LUT for exports, and ongoing compliance management.
Frequently Asked Questions About GST e-Invoicing in India (2026)
Understanding GST e-Invoicing requirements, technical integration, and compliance obligations can be complex. We've compiled answers to the most frequently asked questions to help you navigate the e-Invoicing system confidently.
These FAQs cover everything from e-Invoicing applicability, IRN generation, and JSON schema to penalties, ITC implications, and ERP integration - based on real search queries, CBIC notifications, and our experience of helping 5,000+ businesses achieve e-Invoicing compliance. For additional assistance, explore our GST Registration and GST Return Filing services.
GST e-Invoicing is a system where B2B invoices are electronically authenticated by the Invoice Registration Portal (IRP) managed by the National Informatics Centre (NIC). When you generate an invoice in your ERP or accounting software, it is pushed to the IRP in JSON format. The IRP validates the data, generates a unique Invoice Reference Number (IRN), adds a QR code and digital signature, and returns the signed invoice. This e-invoice is then auto-populated in your GSTR-1 return, eliminating manual data entry. The legal basis is Rule 48(4) of the CGST Rules, 2017.
As per the latest GST Notification No. 10/2023, e-Invoicing is mandatory for all businesses with aggregate annual turnover exceeding ₹5 crore in any financial year from 2017-18 onwards. This applies to B2B supplies, exports, supplies to SEZ units/developers, and debit/credit notes. However, certain entities are exempt: banks, insurance companies, NBFCs, GTA (Goods Transport Agency), SEZ units, government departments, local authorities, and persons paying tax under Section 10 (Composition Scheme). Check your eligibility based on your GST registration turnover.
As of 2026, the e-Invoicing threshold is ₹5 crore aggregate annual turnover. The government has progressively reduced this limit since October 2020: ₹500 crore (Oct 2020), ₹100 crore (Jan 2021), ₹50 crore (Apr 2021), ₹20 crore (Apr 2022), ₹10 crore (Oct 2022), and ₹5 crore (Aug 2023). The GST Council may further reduce this to ₹1 crore or even make it universal. Businesses should prepare for compliance well in advance. Track your turnover through regular GST return filing.
The Invoice Reference Number (IRN) is a unique 64-character hash generated by the Invoice Registration Portal (IRP) for every e-Invoice. It is computed using a combination of the supplier's GSTIN, financial year, document type, and document number. The IRN acts as a unique identifier for each invoice across the entire GST ecosystem. Once generated, the IRN is valid for 24 hours for cancellation. After 24 hours, the e-Invoice can only be cancelled by filing a credit note. The IRN ensures that no duplicate invoices exist in the system.
e-Invoicing is not about generating invoices on the GST portal. Invoices are still created in your own ERP, accounting software, or billing system. The e-Invoicing system only validates and authenticates your existing invoices through the IRP. The IRP adds an IRN, QR code, and digital signature to your invoice data. Think of it as a government certification stamp on your regular invoice. This is different from the GST portal where you file GST returns - e-Invoicing happens before return filing and auto-populates GSTR-1.
The QR code on an e-Invoice contains key invoice parameters encrypted for quick verification. It includes the supplier's GSTIN, recipient's GSTIN, invoice number, date of generation, invoice value, number of line items, HSN code of main item, and the unique IRN. Tax officers and recipients can scan this QR code using any standard QR reader or the GST Verify app to instantly verify the authenticity of the invoice. For B2C invoices above ₹200, a dynamic QR code is also required under Rule 46(p) of the CGST Rules, 2017.
e-Invoicing is required for the following documents under GST: (1) Tax invoices for B2B supply of goods and services, (2) Export invoices for supplies outside India, (3) Invoices to SEZ units/developers (with or without payment of tax), (4) Debit notes issued to registered persons, and (5) Credit notes issued to registered persons. It is not required for B2C invoices, bill of supply, delivery challans, job work challans, ISD invoices, or self-invoices under reverse charge mechanism.
Once the IRP validates your e-Invoice and generates the IRN, the invoice data is automatically shared with the GST portal. The details appear in the relevant tables of your GSTR-1 return: Table 4A for B2B supplies, Table 6A for exports, and Table 9B for credit/debit notes. This eliminates manual data entry in GSTR-1, reduces errors, and ensures that the data in your returns exactly matches your issued invoices. However, you still need to review and file the GSTR-1 manually. The auto-population typically happens within 24 hours of IRN generation.
The e-Invoice Portal at einvoice1.gst.gov.in is the primary Invoice Registration Portal (IRP) operated by the National Informatics Centre (NIC). Businesses use this portal to: register for e-Invoicing, generate API credentials, test e-Invoice generation on sandbox, generate IRN for production invoices, cancel e-Invoices, and bulk upload invoices. Additional IRP portals include einvoice2.gst.gov.in through einvoice10.gst.gov.in. The portal requires your GSTIN for login. API credentials are valid for the taxpayer's GSTIN only.
To register on the e-Invoice Portal, follow these steps: (1) Visit einvoice1.gst.gov.in and click 'Registration', (2) Enter your GSTIN - the portal auto-fetches your legal name and trade name, (3) Verify via OTP sent to the registered email and mobile linked to your GST registration, (4) Create your username and password, (5) Generate API credentials (Client ID and Client Secret) for your ERP/software integration, (6) Test on the sandbox environment before going live, (7) Switch to production mode and start generating IRNs. The entire registration process takes 15-30 minutes. Ensure your GST registration details are up to date.
Non-compliance with e-Invoicing provisions attracts severe penalties under the CGST Act, 2017: (1) Non-issuance of e-Invoice attracts a penalty of 100% of the tax due or ₹10,000 per invoice, whichever is higher (Section 122). (2) Incorrect e-Invoice attracts a penalty of ₹25,000 per invoice. (3) ITC denial for buyer - the recipient cannot claim Input Tax Credit (ITC) on invoices that should have been e-Invoices but were not. (4) Non-generation means the invoice is treated as not issued under GST law, leading to further tax and interest implications. Non-compliant invoices also won't auto-populate in GSTR-1.
Yes, e-Invoices can be cancelled within 24 hours of IRN generation through the e-Invoice portal or API. After 24 hours, cancellation on the IRP is not possible. In such cases, you must issue a credit note against the original invoice and generate a new e-Invoice with the correct details. Amendment of e-Invoices is not directly supported - you need to cancel and re-generate. The cancellation must also be reflected in your GSTR-1 filing. Note: Partial cancellation is not allowed; the entire e-Invoice must be cancelled.
The e-Invoice JSON schema is a standardized data format defined by GSTN (GST Network) for exchanging invoice data with the IRP. The schema includes mandatory fields like: Version (currently 1.1), Transaction Details (supply type, category), Document Details (type, number, date), Seller Details (GSTIN, legal name, address, PIN code), Buyer Details (GSTIN, legal name, address), Item List (description, HSN code, quantity, unit, rate, taxable value, tax amounts), Document Total (total value, tax amounts), and e-Way Bill Details (if applicable). The complete schema with all fields is available on the e-Invoice Portal documentation section.
e-Invoice integration can be done through three methods: (1) API Integration - Connect your ERP directly to the IRP using REST APIs. You need API credentials (Client ID and Client Secret) from the e-Invoice portal. This is recommended for businesses generating high volumes of invoices. (2) Bulk Upload - Prepare invoices in the prescribed Excel/JSON format and upload them on the e-Invoice portal. Suitable for small to medium businesses. (3) GST Suvidha Providers (GSPs) - Use third-party software providers authorized by GSTN to handle e-Invoice generation. Popular options include ClearTax, Tally, Zoho, and Busy. At IncorpX, we help businesses set up API integration and recommend the best approach based on your invoice volume and existing software.
No, e-Invoicing (IRN generation) is not required for B2C transactions. The e-Invoicing mandate under Rule 48(4) of CGST Rules applies only to B2B supplies, exports, supplies to SEZ, and debit/credit notes to registered persons. However, for B2C transactions, a separate requirement exists: businesses with turnover above ₹500 crore must include a Dynamic QR Code on B2C invoices under Notification No. 14/2020. This QR code must contain UPI payment details and is different from the e-Invoice QR code.
e-Invoicing and e-Way Bill systems are integrated. When you generate an e-Invoice for a consignment that requires an e-Way Bill (goods value above ₹50,000), you can include Part A of the e-Way Bill data in the e-Invoice JSON. The IRP generates both the IRN and e-Way Bill number simultaneously. You only need to update Part B (transporter details and vehicle number) separately on the e-Way Bill portal. This integration eliminates duplicate data entry and ensures consistency between your invoice and transport documents. It also reduces the time spent on compliance for GST services.
If the Invoice Registration Portal (IRP) is temporarily unavailable, you can: (1) Try alternate IRP portals (einvoice2.gst.gov.in through einvoice10.gst.gov.in), (2) Queue invoices in your ERP and push them when connectivity is restored, (3) In prolonged outages, the GSTN may issue official communication relaxing timelines. However, you cannot issue an invoice without IRN if you are covered under the e-Invoicing mandate. Invoices issued without IRN are treated as invalid. It's advisable to maintain a retry mechanism in your API integration and plan for such scenarios.
Yes, bulk e-Invoice generation is supported through multiple methods: (1) API Integration - Push multiple invoices programmatically through the IRP API. Rate limits apply (typically 100 requests per 5 seconds). (2) Bulk Upload on Portal - Prepare invoices in the Excel template provided on the e-Invoice portal (up to 500 invoices per batch). (3) GSP Integration - Third-party GST Suvidha Providers offer bulk processing capabilities with higher throughput. For businesses generating thousands of invoices daily, API integration with proper queuing and error handling is the recommended approach. At IncorpX, we help configure bulk processing workflows for high-volume businesses.
To generate an e-Invoice, you need the following mandatory data: Supplier GSTIN and legal name, Recipient GSTIN and legal name, Invoice number (as per your series), Invoice date, Invoice type (Regular, Credit Note, Debit Note), Place of supply (state code), HSN code for each line item (minimum 4 digits for turnover above ₹5 crore, 6 digits for above ₹10 crore), Quantity and unit, Rate and taxable value, CGST/SGST/IGST amounts, and Total invoice value. Optional fields include shipping address, e-Way Bill details, and payment terms. Ensure your GST registration details are accurate.
e-Invoicing is a powerful tool against tax fraud because: (1) Real-time validation - Every invoice is verified by the IRP against GSTN data, preventing fake GSTIN usage. (2) Unique IRN - Duplicate invoices are impossible as each invoice gets a unique hash. (3) Digital signature - Invoices are digitally signed by the IRP, preventing tampering. (4) Auto GSTR-1 population - Sellers cannot under-report sales as e-Invoice data directly flows to GSTR-1. (5) ITC matching - Buyer's ITC claims are automatically matched against seller's e-Invoices. (6) Audit trail - Complete digital trail of every invoice from generation to filing. This has significantly reduced circular trading, fake ITC claims, and under-reporting of turnover.
e-Invoicing offers significant operational and compliance benefits: (1) Auto GSTR-1 Population - Eliminates manual data entry in returns, saving hours of work. (2) Reduced Errors - Standardized format prevents data mismatches between invoice and return. (3) Faster ITC - Buyers get faster Input Tax Credit as invoice data is immediately available in GST system. (4) e-Way Bill Integration - Generate e-Way Bill Part A automatically with e-Invoice, reducing compliance burden. (5) Real-time Tracking - Monitor invoice status, acceptance, and payment in real-time. (6) Reduced Reconciliation - Seller's and buyer's data automatically match, minimizing GSTR-2A/2B mismatches. For comprehensive GST services, IncorpX provides end-to-end support.
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