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Event DateActApplicable FormObligation
07/09/2025 Income Tax Challan No. ITNS-281 "Payment of TDS/TCS of August. In case of government offices where TDS/TCS is paid by book entry, same shall be paid on the same day on which tax is deducted or collected. "
07/09/2025 Income Tax Form 27C "Seller to upload declarations received in Aug, from buyers for non-deduction of TCS. "
07/09/2025 FEMA ECB-2 Return of External Commercial Borrowings for August.
10/09/2025 Goods and Services Tax GSTR-7 Monthly Return by Tax Deductors for August.
10/09/2025 Goods and Services Tax GSTR-8 Monthly Return by e-commerce operators for August.
11/09/2025 Goods and Services Tax GSTR-1 Monthly Return of Outward Supplies for August.
13/09/2025 Goods and Services Tax GSTR-6 Monthly Return of Input Service Distributor for August.
13/09/2025 Goods and Services Tax IFF Optional Upload of B2B invoices, Dr/Cr notes under QRMP scheme for August.
13/09/2025 Goods and Services Tax GSTR-5 Monthly Return by Non-resident taxable person for August.
14/09/2025 Income Tax Form 16B Issue of TDS Certificate under section 194-IA for TDS deducted on Purchase of Property in July.
14/09/2025 Income Tax Form 16C Issue of TDS Certificate for tax deducted on rent above 50,000 pm by certain individuals/HUF under Section 194-IB where lease has terminated in July.
14/09/2025 Income Tax Form 16D Issue of TDS Certificate for tax deducted under section 194M on certain payments by individual/HUF in July.
14/09/2025 Income Tax Form 16E Issue of TDS Certificate for tax deducted under section 194S on Virtual Digital Assets in July.
15/09/2025 Income Tax Form 67 Statement of foreign income in FY 24-25 & tax deducted or paid on such income to claim foreign tax credit. Applicable where due date of ITR is 31 July. (extended to 15 Sep)
15/09/2025 Income Tax Forms 1 to 5 ITRs for Individuals, Non Corporates not-liable to Audit, for AY 2025-26.
15/09/2025 Income Tax 10IEA Option to change regime in case of individual & HUF having income from business or profession.
15/09/2025 Income Tax Challan No.280 Deposit of Second Instalment of Advance Tax (45%) by all assessees (other than 44AD & 44ADA cases).
15/09/2025 Income Tax Form 24G Details of Deposit of TDS/TCS of August by book entry by an office of the Government.
15/09/2025 Provident Fund Electronic Challan cum Return (ECR) E-Payment of PF for August.
15/09/2025 ESI ESI Challan Payment of ESI for August
20/09/2025 Goods and Services Tax GSTR-1A To add/amend particulars (other than GSTIN) in GSTR-1 of Aug. It can be filed after filing of GSTR-1 but before filing corresponding GSTR-3B.
20/09/2025 Goods and Service Tax GSTR-3B Summary Return cum Payment of Tax for August by Monthly filers. (other than QRMP).
20/09/2025 Goods and Services Tax GSTR-5A Monthly Return by persons outside India providing online information and data base access or retrieval services, for August.
25/09/2025 Goods and Services Tax PMT-06 Deposit of GST under QRMP scheme for August .
27/09/2025 Companies Act AOC-4 Filing of Financial Statements for FY 2024-25 by OPC Companies.
27/09/2025 Companies Act - Submission of Cost Audit Report by Cost Auditor to the Board of Directors for FY 2024-25.
28/09/2025 Goods and Services Tax GSTR-11 Return for August by persons with Unique Identification Number (UIN) like embassies etc to get refund under GST for goods and services purchased by them.
30/09/2025 Companies Act - Transfer of unspent CSR amount to the CSR fund by All Companies whose CSR Expenditure is unspent as on 31st March and such amount is not marked for any ongoing project.
30/09/2025 Companies Act - Quarter 2 – Board Meeting of All Companies
30/09/2025 Companies Act - Annual General Meeting of All Companies.
30/09/2025 Companies Act DIR-3 KYC of All Directors (individuals) who hold DIN on 31st March, 2025.
30/09/2025 Companies Act FC-3 Annual accounts along with the list of all principal places of business in India established by a foreign company (Branch / Liaison /Project Office)
30/09/2025 Companies Act MGT-8 Certification of a Company's Annual Return by a Practising Company Secretary in case of listed Company, Company having paid-up share capital of 10 crore rupees or more or turnover of 50 crore rupees or more.
30/09/2025 Companies Act MR-3 Secretarial Audit Report applicable in case of : (i) Listed Companies (ii) public company having a paid-up share capital of 50 crore rupees or more; or (iii) public company having a turnover of 250 crore rupees or more; or company having outstanding loans or borrowings from banks or public financial institutions of 100 crore rupees or more.
30/09/2025 Income Tax Form 26QD Deposit of TDS on certain payments made by individual/HUF under section 194M for August.
30/09/2025 Income Tax Form 26QE Deposit of TDS on Virtual Digital Assets under section 194S for August.
30/09/2025 Income Tax Form 3CD, 3CA/3CB Filing of Tax Audit Report where due date of ITR is 31 Oct.
30/09/2025 Income Tax Form 29B, 29C Filing of MAT/AMT Audit Report etc. where due date of ITR is 31 Oct.
30/09/2025 Income Tax Form 10DA Filing of Audit Report under section 80JJAA(2) for additional employment where due date of ITR is 31 Oct.
30/09/2025 Income Tax Form 9A Application for exercising option under Explanation to section 11(1) to apply income of previous year in the next year or in future, if ITR due date is Nov 30.?
30/09/2025 Income Tax Form 10 Filing of Statement to accumulate income for future application under section 10(21) or 11(1), if ITR due date is Nov 30.
30/09/2025 Income Tax 10B/10BB Filing of Audit report by a fund or trust or institution or any university or other educational institution or any hospital or other medical institution
30/09/2025 ICAI Act - Payment of membership fee for 2024-25 by ICAI Members.
30/09/2025 Income Tax - Filing of other Audit Reports , where due date of ITR is 31 Oct.
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Note : Please note that this is not an exhaustive list of obligations under various laws. Important ones have been compiled to serve as a Ready Reckoner. Users are requested to reconfirm dates with authentic government sources in case of doubt & also keep track of changes, if any.We do not undertake any responsibility for inadvertant errors, omissions or subsequent changes, if any.