General Updates

9 ~ ~fg~I fc1fcl1es fc1lCJIf.l:tdCf5I\!1f&l\!l/Corporate Office 3fRrc;r 6T3"R/OIL House, Oil India Limited "t::Cffcof. IPlotNo.19,~/Sector -16A, amcr cB m<I5R 3fEftcr ~I Noida-201301 (3.~.)(U.P.) 'I'.MhFli$ 1!CP ~ m/Phone: +91-120-2419000 AMaharatna CPSEunder OIL INDIA Government of India ~--ala/E-mail: oilindia@oilindia.in Ref. No. OILISEC/32-33/NSE-BSE Dated: 05.08.2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, Department ofCorporate Service Plot No. CII, G Block, Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Dalal Street Bandra (E), Mumbai -400 051 Mumbai -400 001 Symbol: OIL Security Code: 533106 Sub: Updates on Tax Litigations - Disclosure Regulation 30 SEBI (LODR) Regulations 2015 Sir IMadam, We write further to our disclosure dated 14thAugust 2023 & subsequent updates through quarterly Integrated Filings (Governance), recent being filed on 2~ July 2026 for the quarter ended 30th June 2026, on the subject and submit herewith the updates [annexed] for your information & records please. Thanking you, Yours faithfully, For Oil India Limited A.K. Sahoo Company Secretary & Compliance Officer Encl: As above ~~~fclO!lI\i1IG1 ''',3Rfd1, IRegd. OfficeDuliaian, Pin -786602, Dibrugarh, Assam, Tel.:+913742804510, +913742800427 ============== Web: www.oil-india.comICIN -L11101AS1959GOI001148 DISCLOSURE OF UPDATES TO ONGOING TAX LITIGATIONS OR DISPUTES S. Name of Date of Subject Matter Updates No. the initiation of opposing the litigation I party dispute 1 Union of 03-02-2024 Goods and Services Tax (GST) was implemented The cases pending before Hon'ble India & w.e.f. 01st July 2017 and as per the FAQs on Gauhati High Court along with cases Others (T.P.(C) No. Government Services issued by CBIC, GST IS pending before Hon'ble Rajasthan High 000300 - payable on Royalty paid for assignment of right to Court on subject matter, were 000304 / 2024) use natural resources. However, Company transferred from respective High Courts before Hon'ble Supreme Court contends that GST is not payable on Royalty paid to Hon'ble Supreme Court and were ofIndia. under the Oil Fields (Regulation & Development) admitted on 03-02-2024 (T.P.(C) No. Act, 1948. The Company has accordingly filed a 000300 - 000304 / 2024). These cases writ petition In Hori'ble Gauhati High Court are pending before Hon'ble Supreme challenging such a levy. Further, the Hon'ble Court for hearing. The matter was last Gauhati High Court, vide its interim order dated listed on 29.07.2026. 2nd November 2021 has granted stay on the GST As per the order dated 29.07 ..2026, In on royalty payments made by the Company in the Transfer Petition (C) Nos. 300-304/2024, State ofAssam until further orders. counsel for Oil India Limited (OIL)stated that OIL would deposit GST as per law within six weeks. This shall be subject to the final outcome of the proceedings. These petitions were directed to be tagged with C.A. No. 10560/2025 (Udaipur Chamber of Commerce and Industry vs. Union ofIndia). S. Name of Date of Subject Matter Updates No. the initiation of opposing the litigation I party dispute 2 State of 06-06-2020 State of Assam amended the Assam Taxation (on The case was pending before Hon'ble Assam Specified Lands) Act, 1990 ("the Principal Act") Supreme Court for hearing. The matter T.C.(C)No.232 vide the Assam Taxation (on Specified Lands) was last listed on 29.07.2026. - / 2020 before (Amendment) Act, 2004. As per the said Hon'ble As per the order dated 29.07.2026, the Amendment Act, an oil producer is required to Supreme Court State of Assam informed the Court that ofIndia. pay, in the case of Crude Oil, Rs. 200/- per metric the- State wishes to withdraw the specific tonne and in the case of Natural Gas, Rs. 100/- land tax imposed on mineral oil and will per thousand cubic meters of annual productivity move an appropriate bill m the State of the land. Accordingly, the Government of Assam Legislature for this purpose. Based on the has raised a demand of approx. Rs. 2484.81 statement made by the State of Assam, crores for the years 2005-2024 under the the Hon'ble Supreme Court disposed of impugned Amendment Act, which has been Transferred Case (C)No. 232 of 2020 as challenged by OIL as it IS ultra VIres of the well as Writ Appeal No.599/2005 pending Constitu tion of India. before the Gauhati High Court. All pending interlocutory applications were also disposed of.