GSTR-3B Filing Due Date Extended: The Central Board of Indirect Taxes and Customs (CBIC) has extended the form GSTR-3B filing deadline to October 25, 2025, for both monthly and quarterly filers, providing
much-needed relief to taxpayers due to the Diwali festival.
Every registered taxpayer under GST requires to file GSTR-3B, which is a self-declaration return summarizing all outward and inward supplies (sales and purchases) and pay the GST liability for the month/quarter.
Usually, taxpayer have to file the form GSTR-3B on or before the 20th of each month. While small taxpayers who have turnover less than 5 crore have a leverage to opt for quarterly return filing (QRMP), hence filing GSTR-3B quarterly.
The much-needed relaxation comes after the Bombay Chartered Accountant Society (BCAS) asked the Ministry of Finance to extend the due date for filing GSTR-3B returns for September 30 due to the clash with the Diwali festival.
BCAS’s representation in the letter wrote to the Finance Ministry that “the standard statutory due date for furnishing the return is 20th October 2025. The same falls immediately after Sunday, 19th October 2025. Furthermore, the period encompassing 20th October 2025 to 23rd October 2025 coincides directly with the primary days of the Diwali festival, which is observed as a significant public holiday cluster across the country.”
The preparation and finalization of FORM GSTR-3B necessarily involves substantial preparatory work, including reconciliation, data entry, review of Input Tax Credit (ITC) eligibility (often dependent on GSTR-2B generation after the 14th of the month), and fund arrangement for tax payment. Given that the entire period from October 19, 2025, onwards is dedicated to Diwali, professionals, accountants, and company personnel are severely impacted, making the effective compliance window extremely restrictive, if not practically non-existent, BCAS added in the letter.
“Therefore, as a significant step towards ease of doing business, it is earnestly requested that the due date for filing GSTR-3B of September 2025 be extended. Granting this essential administrative relief will enable registered persons and tax practitioners to complete the necessary compliance procedures following the conclusion of the festival period, ensuring accurate and complete return filing and promoting adherence to the provisions of the CGST Act without penalizing taxpayers for unavoidable circumstances,” BCAS concluded.
Why Is It Important To File GSTR-3B?
Taxpayers under GST can’t claim ITC or file GSTR-1 properly if GSTR-3B isn’t filled.
If you file GSTR-3B after the due date, you have to pay a late fee (fixed per day).
As per GST rules:
- Rs 50 per day → if you have any tax liability (Rs 25 CGST + Rs 25 SGST).
- Rs 20 per day → if you have no tax liability (nil return) (Rs 10 CGST + Rs 10 SGST).
