With the government pushing digital compliance under GST, e-invoicing has become a key requirement for businesses across India, including those based in Mumbai. From B2B transactions to seamless GST returns, e-invoicing aims to bring transparency, reduce fraud, and automate tax reporting.
If you're a business operating in Mumbai’s trading hubs, financial districts, or industrial belts, it's time to check whether you're liable for e-invoicing and how to comply with it.
E-Invoicing refers to the system where B2B invoices are electronically authenticated by the GSTN (Goods and Services Tax Network) and assigned a unique Invoice Reference Number (IRN).
This doesn’t mean generating invoices on the GST portal—it means uploading key invoice data for authentication.
Once approved:
The invoice is digitally signed by the GST system
A QR code and IRN are generated
It becomes legally valid for tax and audit purposes
E-invoicing is applicable based on aggregate turnover across all GSTINs under the same PAN (all-India basis):
| 🧮 Aggregate Turnover | 📅 Effective From |
|---|---|
| ₹500 Cr and above | 1st October 2020 |
| ₹100 Cr and above | 1st January 2021 |
| ₹50 Cr and above | 1st April 2021 |
| ₹20 Cr and above | 1st April 2022 |
| ₹10 Cr and above | 1st October 2022 |
| ₹5 Cr and above | 1st August 2023 (Current limit) |
If your turnover in any financial year since FY 2017–18 exceeds ₹5 crore, you must comply with e-invoicing requirements.
✅ Registered businesses making B2B or export supplies
✅ Entities issuing credit notes/debit notes for B2B
✅ Businesses supplying to SEZ (excluding SEZ units themselves)
✅ Transporters generating e-way bills (auto-linked to e-invoice)
🚫 Not applicable to:
B2C invoices
Banks, NBFCs, insurance companies
GTA (Goods Transport Agencies)
SEZ Units
Government departments
Visit the Invoice Registration Portal (IRP): https://einvoice1.gst.gov.in
Login using your GSTIN and credentials
Generate API credentials (if using accounting software like Tally, Zoho, Busy, Marg, etc.)
Integrate API or use offline tools provided by GSTN
Start generating IRNs for all B2B invoices
✔️ Identify your e-invoice applicability based on turnover
✔️ Use a GST-compliant invoicing tool or ERP
✔️ Ensure invoice format has mandatory fields (item HSN, tax values, supply type, etc.)
✔️ Upload invoice details to IRP in real-time
✔️ Ensure QR code and IRN are printed on final invoice copy
✔️ Link your e-invoice with e-way bill, if applicable
✔️ Maintain proper record of IRNs and logs for future audits
❌ Invoice without IRN = Invalid Invoice under GST
🧾 GST credit may be denied to recipient
💰 Penalty of ₹25,000 per incorrect invoice under Section 122 of CGST Act
🚫 Delays in e-way bill generation or GSTR-1 mismatch
Mumbai businesses—especially in finance, logistics, trading, real estate, and exports—often cross the ₹5 crore threshold. Being a major commercial hub, the GST department actively monitors non-compliant firms through AI-based tools and data analytics.
By complying with e-invoicing:
You avoid legal penalties
Improve buyer confidence
Streamline GST filing and reconciliation
Speed up credit cycle and reduce disputes
✨ Standardised invoice format
✨ Real-time invoice validation
✨ Auto-population of GSTR-1
✨ Easier audit and internal controls
✨ Enhanced buyer-seller trust
✨ Reduced invoice manipulation
At TAXAJ, we offer:
E-invoicing eligibility check for your business
Registration and IRP onboarding
Integration with your ERP/accounting software
Custom invoice template setup with QR code
Compliance training for your team
End-to-end GST & e-invoice support in Mumbai and across India
“Whether you use Tally, Zoho, QuickBooks or Excel—we make e-invoicing easy for you.”
E-invoicing is no longer optional for most growing businesses in Mumbai. It's a mandatory digital compliance measure that also adds speed, accuracy, and trust to your business operations. With TAXAJ’s professional support, you can transition smoothly, stay 100% compliant, and avoid penalties.
📞 Need help setting up e-invoicing? Contact TAXAJ today!
✅ On-site & virtual support for all Mumbai businesses.