Extension of Due Date for GSTR-3B Filing for September 2025

Notification No. 17/2025 – Central Tax

Document Date: October 18, 2025

Applicable Act/Rule: Central Goods and Services Tax Act, 2017

Applicable Section/Rule: Section 39(1) and proviso to Section 39(1) read with Section 168

Section 39 of the CGST Act, 2017 governs the filing of GST returns by registered persons. It mandates that every registered taxpayer must furnish GSTR-3B for the relevant tax period, disclosing outward supplies, inward supplies, and tax liability. Sub-section (1) specifies that such return must be filed for every calendar month or part thereof, while the proviso allows quarterly filing for taxpayers under the QRMP (Quarterly Return Monthly Payment) scheme.

Vide Notification No. 17/2025 – Central Tax dated October 18, 2025, the Central Board of Indirect Taxes and Customs (CBIC) has extended the time limit for furnishing GSTR-3B as follows:

  1. For monthly filers (Section 39(1)) – The due date for the return for September 2025 is extended till October 25, 2025.
  2. For quarterly filers under QRMP (Proviso to Section 39(1)) – The due date for the quarter July 2025 – September 2025 is also extended till October 25, 2025.

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