Monthly and Quarterly GST Returns
GSTR-3B Submission Dates
The GSTR-3B, a monthly summary return, is due by October 25, 2025, for September 2025. Quarterly filers must submit GSTR-3B for July-September 2025 by October 25, 2025.
GSTR-1 Filing Schedule
The GSTR-1 return, detailing outward supplies, is due by October 11, 2025, for September 2025. Quarterly filers have until October 13, 2025, for the July-September 2025 period.
Additional GST Returns
For composition scheme taxpayers, the CMP-08 for July-September 2025 is due on October 18, 2025. The Invoice Furnishing Facility (IFF) for September 2025 remains optional with no fixed deadline.
Other Critical GST Deadlines
Additional GST returns due in October 2025 include:
- GSTR-5 (Non-Resident Taxable Persons, September 2025): October 13, 2025
- GSTR-5A (OIDAR Services, September 2025): October 20, 2025
- GSTR-6 (Input Service Distributors, September 2025): October 13, 2025
- GSTR-7 (TDS Deductors, September 2025): October 10, 2025
- GSTR-8 (E-commerce Operators, September 2025): October 10, 2025
The RFD-10 (Refund Application) must be filed within 2 years from the last day of the quarter in which the supply was received.
Importance of Timely Compliance
Missing GST deadlines can lead to hefty penalties and interest charges. Businesses should leverage digital tools to streamline their GST filing process and ensure compliance with GST regulations for seamless operations.