General Updates

HQ/CS/CL.24B/18515 September 26, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex, P.J. Towers, Dalal Street, Mumbai – 400 051 Mumbai – 400 001 SYMBOL: TATACOMM Scrip Code: 500483 Dear Sir / Madam, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Update on material litigation This is with reference to our disclosure dated August 14, 2023 and subsequent updates submitted as part of the Quarterly Integrated Filing (Governance), in relation to certain ongoing income-tax litigations involving Tata Communications Limited ("Company"). As an update to the matter, the Company wishes to inform that the Income Tax Appellate Tribunal, Mumbai ("ITAT") has, vide its order dated September 25, 2026, disposed of the cross-appeals filed by the Company and the Income-tax Department for Assessment Year 2011-12. The ITAT has granted relief to the Company on various matters, including the Company's claim for deduction under section 80-IA of the Income-tax Act, 1961 in respect of its National Long Distance undertaking and certain Transfer Pricing and other tax matters. Certain matters are subject to consequential verification / recomputation by the Assessing Officer. The Company is evaluating the order, including the consequential tax impact and further course of action, if any. The details as required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with the applicable SEBI Master Circular are enclosed as Annexure A. The aforesaid disclosure will also be made available on the website of the Company at www.tatacommunications.com. Kindly take the same on your records. Thanking you, Yours faithfully, For Tata Communications Limited Zubin Adil Patel Company Secretary and Compliance Officer Tata Communications Limited Plot No. C21 & C 36 ‘G’ Block Bandra Kurla Complex Bandra (East) Mumbai 400098 India Regd. Office: VSB Mahatma Gandhi Road Fort Mumbai – 400 001 Tel: 91 92289 18171 email: investor.relations@tatacommunications.com CIN: L64200MH1986PLC039266 website: www.tatacommunications.com Annexure A Details required under Regulation 30 of SEBI Listing Regulations read with SEBI Master Circular No. SEBI/HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 Particulars Details The details of any change in the status The Company had earlier disclosed certain ongoing income-tax and/or any development in relation to litigations, including appeals before the Income Tax Appellate such proceedings Tribunal, Mumbai ("ITAT") for Assessment Year ("AY") 2011-12 relating, inter alia, to disallowance of the Company's claim for deduction under section 80-IA of the Income-tax Act, 1961 in respect of its National Long Distance undertaking and certain Transfer Pricing adjustments. The ITAT has, vide order dated September 25, 2026, disposed of the cross-appeals filed by the Company and the Income-tax Department for AY 2011-12. The ITAT has granted relief to the Company on various matters, including the section 80-IA claim and certain Transfer Pricing and other tax matters. Certain matters are subject to consequential verification / recomputation by the Assessing Officer. In the case of litigation against key Not applicable management personnel or its promoter or ultimate person in control, regularly provide details of any change in the status and/or any development in relation to such proceedings In the event of settlement of the Not applicable. proceedings, details of such settlement The proceedings have been disposed of by an order of the ITAT including terms of settlement, and have not been settled between the parties. The Company compensation/penalty paid (if any) and is evaluating the order, including the consequential tax impact impact of such settlement on the and further course of action, if any. financial position of the listed entity Tata Communications Limited Plot No. C21 & C 36 ‘G’ Block Bandra Kurla Complex Bandra (East) Mumbai 400098 India Regd. Office: VSB Mahatma Gandhi Road Fort Mumbai – 400 001 Tel: 91 92289 18171 email: investor.relations@tatacommunications.com CIN: L64200MH1986PLC039266 website: www.tatacommunications.com