Forget to add in invoice in GSTR 1

As per the Section 39(9) of the CGST Act , you can report in GSTR 1 in the Current month if invoices are of July 23 , however interest applicable. Last date to report any error or correction of F.Y 23-24 in GSTR1 as per the section 39(9) is November 30 .( please refer section amended till date and Confirm) .

1. Navigate to GSTR-1:

   • On the dashboard, go to Services > Returns > Returns Dashboard.
   • Select the financial year and return filing period for which you are currently filing the return (for example, September 2023 or any future period within the same financial year).

2. Add the Missed Invoices:

   • Under the B2B (4A, 4B, 4C, 6B, 6C) section of GSTR-1, you can add the invoices that were missed in July.
   • Ensure you provide the correct invoice number, date, and value, along with the proper GSTIN of the recipient.

3. Amendment for Previous Period:

   • If the invoice pertains to July 2023, make sure you amend the details in the correct section. Usually, there will be an option to amend details of invoices for earlier months within the same financial year.
   • Use the Table 9A (Amendments to B2B invoices) for adding or correcting any missed details of a previously filed return.

4. Save and Submit:

   • After entering the correct details, save your work.
   • Submit and file the return after verifying all the added invoices.

5. Payment Adjustment (if any):

   • If there is any tax liability arising from the added invoices, make sure to pay the due tax using the Payment of Tax option.

6. File GSTR-3B (if needed):

   • Adjust the tax liability (if any) in the corresponding month’s GSTR-3B filing.

• Missed invoices can be added in any GSTR-1 filing for the current financial year until the return filing deadline for September (or the 2nd quarter) of the next financial year.
• Ensure to reconcile the data with your recipients' GSTR-2A/GSTR-2B to avoid discrepancies.

The time limit has now passed for July 2023 invoices:

• Sec 37(3) / 39(9): missing invoices of FY 2023-24 could be reported (or amended) up to 30 November 2024. That window is closed, so the portal will not accept July 2023 invoices in a current GSTR-1.

• Your liability: if the tax on these invoices was not paid in GSTR-3B, pay it now through DRC-03 (voluntary, Sec 73(5)), with interest at 18% (Sec 50) from the due date. If it was already included in 3B, there is no tax shortfall, only a GSTR-1 reporting gap. Explain it in GSTR-9/9C (Table 10/11 adjustments may also be closed for FY 2023-24).

• Buyer's ITC: since the invoices never appeared in their GSTR-2B and the Sec 16(4) deadline (30 November 2024) has passed, the buyer cannot claim the ITC. Commercially, they may ask you to bear the tax or issue a credit note.

• Also note the 3-year bar on filing returns (Sec 37(5) / 39(11), from July 2025). Old periods can no longer be filed.

• Prevention: run a monthly GSTR-1 vs books vs e-invoice/IRP reconciliation.

If these invoices relate to July 2023, they cannot now be added to GSTR-1 for the current financial year. Section 37(3) of the CGST Act sets the time limit for reporting omitted invoices in a subsequent GSTR-1: up to 30 November following the end of the relevant financial year, or the date of filing the annual return, whichever is earlier. For FY 2023–24, that deadline has passed. GSTR-10 is a final return and does not provide a route to amend GSTR-1 or report these invoices.

Check whether the recipient’s ITC was affected and whether any tax was paid on the invoices; any correction or disclosure now should be assessed against the return trail and the facts. For future periods, omitted invoices are reported through the relevant GSTR-1 amendment table within the statutory time limit, not by adding them to a different financial year’s outward supplies.

This issue fits into the year-end reconciliation of sales invoices, GSTR-1 and the final return record. Manual compliance work makes these checks difficult, while automation reduces repetitive work and keeps professional judgment in control. At Jir AI, our 2,000+ AI agents and 650+ integrations streamline GST, ITR, TDS, TCS and other compliance workflows, helping reduce manual workload by up to 70%. WhatsApp us to discuss your workflow: https://wa.me/message/3HVOZ7HIY4ESC1