GSTR-1 for July 2026 Is Due Tomorrow, Tuesday 11 August

Monthly filers must file GSTR-1 for July 2026 by Tuesday 11 August. Late filing delays your buyers' GSTR-2B credit for the month, so invoices missed now surface as ITC mismatch queries later. QRMP taxpayers' IFF window closes 13 August.

Monthly GSTR-1 for July 2026 falls due tomorrow, Tuesday 11 August. The 11th-of-the-following-month due date for monthly filers is fixed by Notification No. 83/2020-Central Tax dated 10 November 2020, and no extension has been notified for this month.

Two knock-on dates matter. Your buyers' GSTR-2B for July is generated on 14 August from what you file — miss the deadline and your invoices drop out of their auto-drafted credit statement, which is how ITC mismatch queries and follow-up calls from customers begin. And GSTR-3B for July, with the tax payment, follows on 20 August.

Taxpayers under the QRMP scheme do not file a monthly GSTR-1; their optional Invoice Furnishing Facility for July stays open until 13 August for passing B2B credit to buyers.

What this means for you: file today or tomorrow morning rather than at the evening rush, when the portal slows. Reconcile your sales register against e-invoice data before filing — amendments made later sit in a subsequent month's GSTR-1 and complicate the annual return. A late GSTR-1 also attracts a late fee under Section 47 even if no tax is payable through it.

File at https://www.gst.gov.in and check for any last-minute portal advisories at https://www.gst.gov.in/newsandupdates.

Topics:GSTR-1 due dateJuly 2026 GSTR-111 August deadlineGSTR-2BQRMP IFFGSTR-3B 20 AugustGST return filingChennai GST filingTamil Nadu taxpayerslate fee section 47

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