Report from an accountant to be furnished under sub-section (2AB) of Section 35 of the Act relating to in-house scientific research and development facility (if due date of submission of return of income is 31 October 2025) in Form 3CLA
Due date for filing of return of income for the Assessment Year 2025-26 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 applies to such spouse applicable for all income tax returns except ITR-1, ITR-2 and ITR-4
Certificate from the principal officer of the amalgamated company and duly verified by an accountant regarding achievement of the prescribed level of production and continuance of such level of production in subsequent years.(if due date of submission of return of income is 31 October 2025) in Form 62
Audit report under (sub-rule (12) of rule 17CA) of the Income-tax Rules, 1962, in the case of an electoral trust (if due date of submission of return of income is 31 October 2025) in Form 10BC
Application for exercise of option under sub-section (4) of Section 115BA of the Income-tax Act,1961 (if due date of submission of return of income is 31 October 2025) in Form 10-IB
Application for exercise of option under sub-section (7) of Section 115BAB of the Income-tax Act, 1961 in Form 10-ID
Annual Statement of Exempt Income under sub-rule (2) of rule 21AJA and taxable income under sub-rule (2) of rule 21AJAA (if due date of submission of return of income is 31 October 2025) in Form 10-IK
Report from an accountant to be furnished for purpose of Section 9A regarding fulfilment of certain conditions by an eligible investment fund in Form 3CEJA
Application for exercise of option under sub-section (5) of Section 115BAA of the Income - tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10-IC
Certificate under sub-section (3) of Section 80QQB for authors of certain books in receipt of royalty income, etc. (if due date of submission of return of income is 31 October 2025) in Form 10CCD
Certificate under sub-section (2) of Section 80RRB for Patentees in receipt of royalty income, etc. (if due date of submission of return of income is 31 October 2025) in Form 10CCE
Report under Section 80LA(3) of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10CCF
Taxation of income from retirement benefit account maintained in a notified country (if due date of submission of return of income is 31 October 2025) in Form 10-EE
Certificate of foreign inward remittance (if due date of submission of return of income is 31 October 2025) in Form 10H
Certificate of the medical authority for certifying person with disability, severe disability, autism, cerebral palsy and multiple disability for purposes of Section 80DD and Section 80U (if due date of submission of return of income is 31 October 2025) in Form 10IA
Application for exercise of option under sub-section (5) of Section 115BAD of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10-IF
Statement of Exempt income under clause (4D) of Section 10 of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10IG
Statement of income of a Specified fund eligible for concessional taxation under Section 115AD of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10IH
Statement of exempt income under clause (23FF) of Section 10 of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10-II
Form for opting for taxation of income by way of royalty in respect of Patent (if due date of submission of return of income is 31 October 2025) in Form 3CFA
Income attributable to assets located in India under Section 9 of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 3CT
Particulars to be furnished under clause (b) of sub-section (1B) of Section 10A read with clause (b) of sub-section (2) of Section 10AA of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 56FF
Details of amount attributed to capital asset remaining with the specified entity (if due date of submission of return of income is 31 October 2025) ) in Form 5C
Declaration to be filed by the assessee claiming deduction under Section 80GG (if due date of submission of return of income is 31 October 2025) in Form 10BA
Form for furnishing particulars of income under Section 192(2A) for claiming relief u/s 89 (if due date of submission of return of income is 31 October 2025) in Form 10E
Statement of eligible investment received in Form 10BBD
Authorization for claiming deduction in respect of any payment made to any financial institution located in a Notified jurisdictional area. (if due date of submission of return of income is 31 October 2025) in Form 10FC
Certificate of accountant in respect of compliance to the provisions of clause (23FE) of Section 10 of the Income-tax Act, 1961 by the notified Pension Fund in Form 10BBC
Application for Opting for Safe Harbour in respect of Specified Domestic Transactions (if the assessee is required to submit return of income on 31 October 2025) in Form 3CEFB
Application for exercise of option under clause (i) of sub-section (6) of Section 115BAC or withdrawal of option under the proviso to sub-section (6) of Section 115BAC of the Income-tax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10-IEA
Application for exercise of option under sub-section (5) of Section 115BAE of the IncomeTax Act, 1961 (if due date of submission of return of income is 31 October 2025) in Form 10-IFA
Certificate of accountant in respect of compliance to the provisions of clause (23FE) of Section 10 of the Income-tax Act, 1961 by the notified Pension Fund in Form 10BBC
10 December 2025
GSTR-7 for the month of November 2025 to be filed by authorities liable to Tax Deduction at Source (TDS)
GSTR-8 for the month of November 2025 to be filed by E-Commerce Operators liable to Tax Collection at Source (TCS)
11 December 2025
GSTR-1 for the month of November 2025 to be filed by all registered taxpayers not under QRMP scheme
13 December 2025
GSTR-6 for the month of November 2025 to be filed by Input Service Distributors (ISDs)
Uploading B2B invoices using Invoice Furnishing Facility (IFF) under QRMP scheme for the month of November 2025 by taxpayers with aggregate turnover of up to INR 50 million
GSTR-5 for the month of November 2025 to be filed by Non-Resident Foreign Taxpayers
15 December 2025
Due date for furnishing of Form 24G by an office of the Government where TDS/TCS for the month of November 2025 in Form 24G
Third instalment of advance tax for the assessment year 2026-27.
Due date for issue of TDS Certificate for tax deducted under Section 194-IA in the month of October 2025 in Form 16B
Due date for issue of TDS Certificate for tax deducted under Section 194-IB in the month of October 2025 in Form 16C
Due date for issue of TDS Certificate for tax deducted under Section 194M in the month of October 2025 in Form 16D
Due date for issue of TDS Certificate for tax deducted under Section 194S in the month of October 2025 in Form 16E
Monthly statement to be furnished by a stock exchange in respect of transactions in which client codes have been modified after registering in the system for the month of November 2025 In Form 3BB
Monthly statement to be furnished by a recognized association in respect of transactions in which client codes have been modified after registering in the system for the month of November 2025 in Form 3BC
20 December 2025
GSTR-5A for the month of November 2025 to be filed by Non-Resident Service Providers of Online Database Access and Retrieval (OIDAR) Services
GSTR-3B for the month of November 2025 to be filed by all registered taxpayers not under QRMP scheme
25 December 2025
Payment of tax through GST PMT-06 by taxpayers under QRMP scheme for the month of November 2025
30 December 2025
Due date for furnishing of challan-cum-statement in respect of tax deducted under Section 194-IA in the month of November 2025 in Form 26QB
Due date for furnishing of challan-cum-statement in respect of tax deducted under Section 194-IB in the month of November 2025 in Form 26QC
Due date for furnishing of challan cum statement in respect of tax deducted under Section 194M in the month of November 2025 in Form 26QD
Due date for furnishing of challan cum statement in respect of tax deducted under Section 194S in the month of November 2025 in Form 26QE
Annual Compliance Report on Advance Pricing Agreement (if due date of submission of return of income is 30 November 2025) in Form 3CEF
31 December 2025
GSTR-9 (Annual Return) and GSTR-9C (Reconciliation) as applicable to all taxpayers for FY 2024-25
10 January 2026
GSTR-7 for the month of December 2025 to be filed by authorities liable to TDS
GSTR-8 for the month of December 2025 to be filed by E-Commerce Operators liable to TCS
11 January 2026
GSTR-1 for the month of December 2025 by all registered taxpayers not under QRMP scheme
13 January 2026
GSTR-6 for the month of December 2025 to be filed by ISDs
Uploading B2B invoices using IFF under QRMP scheme for the month of December 2025 by taxpayers with aggregate turnover of up to INR 50 million
GSTR-5 for the month of December 2025 to be filed by Non-Resident Foreign Taxpayersr