How to Generate an e-Invoice in Tally Prime (2026)

If your business crosses the government-notified turnover threshold for e-Invoicing, every B2B invoice you raise needs to be reported to the GST Invoice Registration Portal (IRP) before it’s considered valid — and Tally Prime can handle this directly from the sales voucher screen instead of you re-keying invoice data into a separate portal.

This guide walks through enabling e-Invoicing, generating your first e-Invoice, and the most common reasons invoices get rejected by the IRP.

e-Invoice vs e-Way Bill vs Regular GST Invoice

These three terms get mixed up often, so here’s the distinction:

A regular GST invoice is simply a sales document with correct GST fields — required for every taxable sale, regardless of turnover.

An e-Invoice is a regular GST invoice that has also been digitally reported to and authenticated by the government’s Invoice Registration Portal, which issues back a unique Invoice Reference Number (IRN) and a QR code. This is mandatory only for businesses above the notified turnover threshold, for B2B transactions.

An e-Way Bill is a separate document required when goods physically move above a certain value, regardless of whether e-Invoicing applies. Some transactions need both an e-Invoice and an e-Way Bill; others need only one, or neither.

If you haven’t set up e-Way Bills yet, see our guide on how to generate an e-Way Bill in Tally Prime — the two features are configured separately but often used together.

Who Needs to Generate e-Invoices?

Applicability is based on your business’s aggregate annual turnover crossing a government-notified threshold. This threshold has been lowered multiple times since e-Invoicing was introduced, bringing more businesses into scope each time. Because of this, always check the current threshold on the official GST portal rather than relying on a number from an older article — don’t assume you’re exempt just because you checked a while ago.

What You Need Before You Start

• Tally Prime installed, with GST already enabled — see our guide on how to create a GST invoice in Tally Prime if this isn’t set up yet
• An active GSTIN registered for e-Invoicing on the IRP (this is usually a one-time registration step on the government portal, separate from Tally Prime)
• API credentials or portal login details, depending on which connectivity method you use

Step 1: Enable e-Invoicing in Tally Prime

1. Gateway of Tally, then F11 (Features), then F3 (Statutory & Taxation)
2. Confirm Enable Goods and Services Tax (GST) is set to Yes
3. Set e-Invoicing applicable to Yes
4. Enter your GSTIN and the applicable date from which e-Invoicing applies to your business
5. Configure your connectivity method — Tally Prime supports direct API-based filing in many releases, or you can export data for manual upload, depending on your setup
6. Press Ctrl+A to save

Step 2: Create Your Sales Invoice as Usual

Once e-Invoicing is enabled, you don’t need a separate workflow for everyday billing:

1. Gateway of Tally, then Vouchers, then F8 (Sales)
2. Fill in the invoice exactly as you normally would — party, items or services, rates, and GST details
3. Press Alt+A if you want to verify the tax breakup before saving
4. Press Ctrl+A to save the voucher

Step 3: Generate the e-Invoice (Get the IRN and QR Code)

1. From the saved invoice, access the e-Invoice option (available directly from the voucher or via the GST reports section, depending on your Tally Prime release)
2. Tally Prime prepares the invoice data in the JSON format required by the IRP
3. If you’re using direct API connectivity, Tally Prime sends this automatically and retrieves the response
4. If you’re using manual upload, export the JSON file and upload it through the government’s e-Invoice portal yourself
5. On success, the IRP returns an Invoice Reference Number (IRN), a digitally signed QR code, and an acknowledgement number
6. Tally Prime stores this against the invoice

Step 4: Print the Invoice with the IRN and QR Code

1. Open the saved invoice and press Alt+P to print
2. Press F12 and confirm the QR code and IRN details are included in your print layout
3. Print or save as PDF — this is now your valid, government-authenticated tax invoice

An invoice without a valid IRN and QR code, where e-Invoicing applies to your business, is generally not considered a valid tax invoice for the buyer’s input credit purposes — so this step isn’t optional once you’re in scope.

Step 5: Handle Cancellations and Amendments

If you need to cancel an invoice after generating an e-Invoice for it, there’s typically a limited time window (commonly within 24 hours of generation, though always confirm the current rule) within which you can cancel it on the IRP. After that window, cancellation usually isn’t possible, and corrections are instead made via a Credit Note or Debit Note — see our guide on how to record debit note and credit note in Tally Prime for that process.

You cannot simply delete or alter an already-reported e-Invoice in Tally Prime and expect it to update on the government side — any change beyond the cancellation window needs to go through the proper adjustment document.

Common Reasons e-Invoices Get Rejected

• Mismatched GSTIN details between your Tally Prime company setup and your IRP registration
• Incorrect HSN/SAC codes on stock items or services, which the IRP validates against
• Duplicate invoice numbers, since the IRP checks for uniqueness within a financial year for your GSTIN
• Missing mandatory fields, such as state codes or pin codes, especially for first-time setups where master data wasn’t fully completed
• Trying to generate an e-Invoice after the time limit allowed from the invoice date, in setups where such a limit applies

Common Setup Mistakes to Avoid

• Enabling e-Invoicing in Tally Prime without first completing registration on the government’s e-Invoice portal — both sides need to be set up
• Not updating HSN/SAC codes across all stock items before going live, leading to a wave of rejections on day one
• Assuming the turnover threshold doesn’t apply to you without rechecking current rules, since thresholds have been lowered over time
• Not training billing staff on the cancellation time window, leading to invoices that should have been cancelled instead needing a Credit Note
• Forgetting to reprint already-issued invoices with the IRN/QR code after generating it, leaving the customer with an invalid copy

FAQs

Is e-Invoicing the same as GST registration? No. GST registration is your basic tax registration. e-Invoicing is an additional reporting requirement that applies once your turnover crosses a notified threshold.

Do B2C invoices need an e-Invoice? Generally, e-Invoicing applies to B2B transactions. B2C invoices typically have different requirements, such as dynamic QR codes rather than IRN-based e-Invoicing — check current rules for your specific case.

What happens if I forget to generate an e-Invoice for a sale? This can create compliance issues, since the invoice may not be considered valid for the buyer’s credit purposes. Generate it as soon as possible and consult your tax advisor on how to handle the gap.

Can I generate e-Invoices for past invoices retroactively? Only within whatever time window the IRP allows for the invoice date. Beyond that, check with your tax advisor on the correct corrective approach.

Does Tally Prime charge extra for e-Invoicing? This depends on your Tally Prime edition, release, and any connector services used for API-based filing. Check current Tally pricing and your reseller for specifics, since this can change.