Due Dates in the month of October 2026

07 October 2026

Due date for deposit of Tax deducted/collected for the month of September 2026.

file now

07 October 2026

Due date for deposit of TDS for the period July 2026 to September 2026 when Assessing Officer has permitted quarterly deposit of TDS under section 392(1) or 393(1) of the Income-tax Act, 2025

file now

07 October 2026

Upload declarations received from recipients in Form No. 121 (Earlier known as 15G/15H) during the quarter ending September, 2026

file now

10 October 2026

Due date to file GSTR-7 for Tax Deducted at Source (TDS) and deposited under GST for the month of September 2026

file now

11 October 2026

Due date to file GSTR-1 for the period of September 2026 for the Taxpayers who opted for monthly filing.

file now

11 October 2026

Due date to file ADT-1 for the appointment/re-appointment of the auditor for OPC's whose annual general meeting was convened on 27th September 2026

file now

13 October 2026

Due date to file GSTR-1 for the period of July–September 2026 for the Taxpayers who opted QRMP Scheme for July–September 2026.

file now

13 October 2026

Due date to file the monthly Return of Input Service Distributor (ISD) GSTR-6

file now

13 October 2026

Every Non-resident taxable person is to file the monthly GSTR-5 Return for the month of September 2026

file now

14 October 2026

Filling of form ADT-1 by the companies (other than OPC) for the appointment of statutory auditor for the FY 2026-27 at the Annual General Meeting convened on 30th September 2026.

file now

15 October 2026

Issue of certificate in Form No. 132(Earlier Form 16B, 16C, 16D, and 16E ) (Income-tax Rules, 2026) under section 395(4) of the Income-tax Act 2025 for tax deducted at source under section 393(1) of the Income-tax Act 2025 in the month of August, 2026

file now

18 October 2026

Taxpayers registered under the GST Composition Scheme must file the CMP-08 return for quarter July-Sep;tember 2026. This return is a summary of quarterly payment of tax under the composition scheme.

file now

20 October 2026

Due date to file GSTR-3B for the month of September 2026 for the Taxpayers who opted for monthly filing

file now

20 October 2026

Due date to file GSTR-5A for the month of September 2026 by the Non-resident suppliers or OIDAR service providers (e.g., cloud storage, streaming, SaaS, online gaming) supplying to B2C (non-taxable) customers in India.

file now

22 October 2026

Due date to file GSTR-3B for the period of July to September 2025 opted under QRMP scheme in the states of Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, the Union territories of Daman and Diu and Dadra and Nagar Haveli, Puducherry, Andaman and Nicobar Islands and Lakshadweep

file now

24 October 2026

Due date to file GSTR-3B for the period of July to September 2025 opted under QRMP scheme in the states of Himachal Pradesh, Punjab, Uttarakhand, Haryana, Rajasthan, Uttar Pradesh, Bihar, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya, Assam, West Bengal, Jharkhand and Odisha, the Union territories of Jammu and Kashmir, Ladakh, Chandigarh and Delhi

file now

29 October 2026

Filing of Form MGT-14 by Companies whose Annual General meeting is conducted on 30th September, 2026 through audio/visual means

file now

29 October 2026

Filing of Form AOC-4/AOC-4 CFS/ XBRL by Companies whose Annual General Meeting convened on 30th Sep, 2026

file now

30 October 2026

Due date to file LLP Form 8 for submission of Financials to ROC by the LLPs in India.

file now

30 October 2026

Due date for furnishing of challan-cum-statement in respect of tax deducted under section 393(1) (earlier known as 194-IA, section 194-IB, section 194M,  section 194S) in the month of September, 2026.

file now

31 October 2026

Due date for filing quarterly TDS returns (Forms 138(earlier known as 24Q) for salary and 140 (earlier known as 26Q) for non-salary deductions) for the quarter July - September 2026

file now

31 October 2026

Due date for filing quarterly TCS returns for the quarter July - September 2026

file now

31 October 2026

Filing of return of income for the assessment year 2026-27 if the assessee (not having any international or specified domestic transaction) is(a) corporate-assessee or (b) non-corporate assessee (whose books of account are required to be audited) or (c) partner of a firm whose accounts are required to be audited or the spouse of such partner if the provisions of section 5A apply.

file now

31 October 2026

Form 10B/10BB - Audit report under clause (b) of the tenth proviso to clause (23C) of section 10 and sub-clause (ii) of clause (b) of subsection (1) of section 12A of the Income-tax Act, 1961, in the case of a fund or trust or institution or any university or other educational institution or any hospital or other medical institution. (if due date of submission of return of income is November 30, 2026)

file now

31 October 2026

Audit report under section 44AB for the Assessment Year 2026-27 in the case of an assessee who is also required to submit a report pertaining to international or specified domestic transactions under section 92E

file now

31 October 2026

Due date for furnishing the report in Form 3CEB in respect of international transactions and specified domestic transactions under Section 92E of the Income Tax Act, 1961, for the Assessment Year 2026-27 (FY 2025-26)

file now

31 October 2026

Due date to Submission of half yearly MSME Return for the period from April, 2025 to September, 2026 by the Companies

file now