GST E-Invoicing Software
GST E-Invoicing Software services managed seamlessly by our expert team.
E-invoicing is mandatory for businesses above the notified turnover limit, and the right software makes it effortless. Our GST e-invoicing solution generates compliant invoices, IRN and QR codes automatically. CASYST helps you choose, set up and integrate the software with your billing.
What is GST E-Invoicing Software?
E-invoicing means that a business's invoices are reported to the government's Invoice Registration Portal, which returns a unique Invoice Reference Number (IRN) and QR code. Businesses above the notified turnover threshold must generate e-invoices for their business-to-business supplies.
E-invoicing software connects to your billing or accounting system, prepares invoices in the required format, sends them to the portal and prints or shares the signed invoice.
Who needs GST E-Invoicing Software?
- Businesses above the e-invoicing turnover threshold
- Companies that raise many B2B invoices
- Businesses that want e-way bills generated with invoices
- Firms seeking automatic reconciliation with GST returns
Benefits of GST E-Invoicing Software
Automatic IRN and QR
Invoices are generated and signed without manual steps.
Time saved
Bulk upload and integration reduce data entry.
Fewer errors
Built-in validation avoids rejected invoices.
Return accuracy
Data flows into GSTR-1 automatically.
E-way bill integration
Generate e-way bills alongside e-invoices.
Eligibility
- Businesses above the notified turnover for e-invoicing
- Businesses making B2B supplies
- GST registration and portal credentials
- Billing or ERP software to integrate
Documents required
- GSTIN and business details
- Details of existing billing or ERP software
- Sample invoices and item master
- Authorised signatory details
- API access details from the GST portal
- Turnover details to confirm applicability
GST E-Invoicing Software process
- 1Step 1
Confirm applicability
We check if your turnover requires e-invoicing.
- 2Step 2
Choose the integration
We pick between API, bulk upload or direct integration.
- 3Step 3
Set up the software
We configure invoice formats, masters and GSTINs.
- 4Step 4
Test invoices
We test IRN and QR generation.
- 5Step 5
Train your team
Your staff learns the workflow.
- 6Step 6
Go live and support
We support you after launch.
Using e-invoicing
- Generate the IRN and QR code for every eligible invoice
- Cancel or amend invoices within the allowed time
- Generate e-way bills where needed
- Reconcile e-invoices with your returns
- Keep records for the retention period
How e-invoicing works
- 1Step 1
Create the invoice
Prepare the invoice in your billing software.
- 2Step 2
Send to the portal
The software sends invoice data to the Invoice Registration Portal.
- 3Step 3
Receive IRN and QR code
The portal returns the IRN and a QR code.
- 4Step 4
Issue the invoice
Share the signed invoice with your customer.
Benefits of e-invoicing
- Faster, error-free invoicing
- Automatic data flow into returns
- Easier reconciliation
- Fewer input credit disputes
Related services
GST E-Invoicing Software cost
Our GST E-Invoicing Software package starts from ₹1,499. Government fees, stamp duty and other statutory charges are separate and depend on your state and the exact filing involved. We give you a clear, itemised quote before we start, with no hidden charges.
Get a QuoteGST E-Invoicing Software checklist
- Confirm applicability
- Choose the integration
- Set up the software
- Test invoices
- Train your team
- Go live and support
Frequently asked questions
Businesses above the notified turnover limit, which has been reduced over time. We confirm the current threshold.
A unique Invoice Reference Number generated by the government portal for each e-invoice.
Yes, many solutions link e-invoices with e-way bills.
Not necessarily. We can integrate with most systems.
It may not be valid for input tax credit, so compliance is important.
Ready to register GST E-Invoicing Software?
Join 500+ businesses who leverage CASYST for seamless, high-integrity legal operations.