Compliance Calendar for October 2025
As we step into the final quarter of the financial year, October 2025 marks a crucial period for businesses, tax professionals, and compliance teams. With various statutory obligations, tax filing deadlines, and regulatory requirements lined up, staying on top of your compliance calendar is more important than ever.
In this blog post, we provide a comprehensive overview of all the key compliance deadlines for month of October 2025, including GST filings, TDS payments, income tax due dates, ROC filings, and other statutory requirements relevant to businesses and professionals across India. Whether you’re a small business owner, a startup founder, or a corporate CFO, this guide will help ensure that your organization remains fully compliant and avoids penalties for missed deadlines. Overall, it includes deadlines of income tax, GST, SEBI, ROC, and labor laws (ESI & PF) to help you manage your compliance requirements efficiently.
By following these dates, you can avoid problems and keep your business running smoothly.
Income Tax
| Sr. No. | Nature of Compliance | Due Date |
| 1 | Deposit of TDS/TCS for the month of September 2025 | 7th October 2025 |
| 2 | Due date for filing Audit Report u/s 44AB for AY 2025-26 (unless extended) | 15th October 2025 |
| 3 | Issue of TDS Certificate for tax deducted u/s 194-IA, 194-IB, 194M, 194S in August 2025 | 15th October 2025 |
| 4 | Quarterly Statement of TCS deposited for Q2 (July–Sept 2025) | 15th October 2025 |
| 5 | Due date for furnishing challan-cum-statement for TDS u/s 194-IA, 194-IB, 194M, 194S for Sept 2025 | 30th October |
| 6 | Furnishing of Form 3CEB (Transfer Pricing Report) for AY 2025-26 (unless extended) | 31st October 2025 |
| 7 | Tax Audit | 31st October 2025 |
| 8 | ITR (Audit Cases) | 31st October 2025 |
GST
| Sr. No. | Nature of Compliance | Forms | Due Date |
| 1 | submitted by the individual who must deduct TDS under GST for September 2025 | GSTR-7 | October 10, 2025 |
| 2 | Filed by online retailers who must collect TCS for September 2025 under GST | GSTR-8 | October 10, 2025 |
| 3 | GSTR-1 (apart from the QRMP scheme) for September 2025 | GSTR-1 | October 11, 2025 |
| 4 | Non-Resident Taxable Person (NRTP) filing for September 2025 | GSTR-5 | October 13, 2025 |
| 5 | Input Service Distributor (ISD) filed for September 2025 | GSTR-5 | October 13, 2025 |
| 6 | Quarterly statement-cum-challan filed by composition taxpayers | CMP-08 | October 18, 2025 |
| 7 | GSTR-3B for September 2025 | GSTR-3B | October 20, 2025 |
| 8 | GSTR-3B for Quarterly | GSTR-3B | October 22/24, 2025 |
SEBI
| Sr. No. | Nature of Compliance | Due Date |
| 1 | Quarterly Corporate Governance Report under SEBI (LODR) Reg. 27(2) for Q2 FY 2025-26 | 15th October 2025 |
| 2 | Statement of Investor Complaints under SEBI Reg. 13(3) for Q2 FY 2025-26 | 21st October 2025 |
| 3 | Quarterly Shareholding Pattern under SEBI Reg. 31 for Q2 FY 2025-26 | 21st October 2025 |
| 4 | Financial Results for Q2 FY 2025-26 under SEBI Reg. 33 (to be submitted within 45 days from end of quarter) | 14th November 2025 (but planning should begin in October) |
ROC (Companies & LLP)
| Sr. No. | Nature of Compliance | Form | Due Date |
| 1 | Appointment of Auditor for Companies | Form ADT-1 | October 14, 2025 |
| 2 | KYC of Directors | DIR-3/DIR-3 KYC WEB | |
| 3 | Financial Statements for FY 2024–2025 (Companies other than OPC) | Form AOC-4 | October 29, 2025 |
| 4 | Statement of Accounts & Solvency FY 2024–2025 | Form 8 | October 30, 2025 |
ESI & EPF
| Sr. No. | Nature of Compliance | Due Date |
| 1 | ESI Challan payment for September 2025 ESI Challan dated | October 15, 2025 |
| 2 | PF Contribution Payment for September 2025ECR | October 15, 2025 |
Conclusion
The Compliance Calendar for October 2025 is a useful guide that helps business and professionals remember important filing dates. Filling everything on time not only saves you from paying penalties but also shows good governance and trust with regulators.
Keep a regular check on deadlines, maintain proper documentation, and set up reminders for smooth compliance management.
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