Oil India resolves ₹2,484.81-cr Assam tax case in 2026

Why Oil India’s Supreme Court update matters

Oil India Limited disclosed key developments in two large tax litigations pending before the Supreme Court of India, with one dispute now resolved and another still ongoing. The company said the most material outcome is the closure of its long-running land tax dispute with the State of Assam. Assam had demanded approximately ₹2,484.81 crore for the period from 2005 to 2024, making it one of the larger contingent items linked to the company.

At the same time, Oil India said a separate matter on the applicability of Goods and Services Tax (GST) on royalty payments remains active. The Supreme Court has issued fresh interim directions in that case, including a statement from the company’s counsel on depositing GST as per law within a specified timeline. Together, the two litigations are important because they shape how investors read legal risk, cash outflows, and provisions already taken in the accounts.

What Oil India said it had filed earlier

Oil India’s update follows previous disclosures, including an initial disclosure dated August 14, 2023. It also referred to subsequent quarterly Integrated Filings (Governance), with the latest filed on July 27, 2026 for the quarter ended June 30, 2026. The references indicate the litigations have been tracked as part of the company’s ongoing regulatory disclosures.

The current update is anchored around Supreme Court orders dated July 29, 2026. In one case, the court disposed of the dispute after Assam informed it of an intent to withdraw the tax. In the other, the proceedings continue, but the court recorded an interim deposit-related statement.

Assam land tax dispute: origin and demand size

The dispute with the State of Assam arose from the Assam Taxation (on Specified Lands) (Amendment) Act, 2004. According to Oil India, Assam had demanded approximately ₹2,484.81 crore for the years 2005 to 2024. This demand related to a specific land tax imposed on mineral oil.

For Oil India, the case mattered because it represented a large potential liability spanning nearly two decades. The company framed the July 29, 2026 development as a significant change in legal risk, subject to Assam completing the legislative steps it told the court it would pursue.

Supreme Court order dated July 29, 2026: case disposed

Oil India said that, as per the July 29, 2026 order, the State of Assam informed the Supreme Court of its intent to withdraw the specific land tax imposed on mineral oil. Assam indicated that it would move an appropriate bill in the State Legislature to formalise the withdrawal.

Following that submission, the Supreme Court disposed of Transferred Case (C) No. 232 of 2020. It also disposed of Writ Appeal No. 599/2005, which had been pending before the Gauhati High Court. Oil India added that all pending interlocutory applications were also disposed of.

What changes for Oil India’s balance-sheet risk

Oil India said the resolution of the Assam land tax dispute removes a potential liability of approximately ₹2,484.81 crore from its balance sheet risks, provided the legislative withdrawal proceeds as stated. The company’s caveat is important because the state’s intent was communicated to the court, alongside a plan to introduce an appropriate bill to give it effect.

From an investor’s perspective, the disposal reduces uncertainty around a large claim amount that covered 2005 to 2024. But the company’s wording also makes clear that the practical outcome depends on Assam implementing the withdrawal in the legislature.

GST on royalty: why the dispute is still active

The second major litigation relates to the levy of GST on royalty payments made under the Oil Fields (Regulation & Development) Act, 1948. Oil India’s position is that GST is not payable on such royalties. The company said this view is contrary to FAQs on Government Services issued by the Central Board of Indirect Taxes and Customs (CBIC).

Oil India initially approached the Gauhati High Court, which granted an interim stay on GST payments in Assam on November 2, 2021. Later, cases from the Gauhati High Court and Rajasthan High Court were transferred to the Supreme Court and admitted on February 3, 2024 as T.P.(C) No. 000300 - 000304/2024. The matter remains pending, with interim directions now shaping near-term cash handling.

July 29, 2026 direction: deposit within six weeks

Oil India said that in the order dated July 29, 2026, counsel for the company stated it would deposit GST as per law within six weeks. The company clarified that this deposit is subject to the final outcome of the proceedings.

Oil India also stated that the petitions have been tagged with C.A. No. 10560/2025 (Udaipur Chamber of Commerce and Industry vs. Union of India). Tagging typically means the matters will be heard along with a lead case dealing with similar legal questions, but Oil India did not provide any timeline for final disposal.

Provisions already recognised in accounts for royalty-related taxes

In its results-related disclosures, Oil India also reported provisions connected to service tax and GST on royalty. The company said it provided ₹243.79 crore for the quarter ended March 2026 towards Service Tax/GST liability on royalty on crude oil and natural gas, including interest of ₹96.97 crore.

It also disclosed that the total amount provided till March 31, 2026 accounts for ₹4,753.77 crore. Separately, it noted that due to the time elapsed, uncertainty, and accumulation of a large amount, it had internally reviewed the matter and made a provision of ₹3,079.33 crore in the financial statements for the year ended March 31, 2024. These figures help explain why the GST-on-royalty litigation remains financially material even while legal proceedings continue.

Key facts table: the two litigations at a glance

Stock move, royalty policy change, and broker commentary

Oil India’s shares were in focus amid a separate policy-related development on upstream royalty. The government revised the royalty on upstream oil production for nomination in onshore fields, reversing relief that had been provided in an earlier notification dated May 8. The effective rate is back at 16.67% compared to 12.5% announced in May, and the change is retroactive from May 11, 2026.

Brokerage commentary cited in the update highlighted the expected impact on Oil India given its onshore exposure. Nomura said the impact on Oil India is expected to be much higher at 8%-9% on profit before tax because almost all its production is from onshore fields, while only 33% of ONGC’s production is onshore. Kotak Securities estimated a higher 5%-6% impact on Oil India and a 1%-1.5% impact on ONGC, and said the royalty reversal could lead to incremental revenue of ₹2,300-₹2,500 crore to the government.

Separately, a brokerage note cited an increase in effective royalty rate for crude sales to $13 per barrel in FY27 from $10 per barrel, with an estimated impact of 4%-5% on EBITDA and 5%-6% on EPS. That note said it maintained a ‘Sell’ call on Oil India and cut its target price to ₹365 from ₹390, implying a 15% downside from the closing price of June 11. The stock was also reported to have fallen 13% over the last five trading days and 14% over the past month.

Market snapshot and company events on the calendar

At the time of the market data shared, Oil India traded at ₹476.15 on NSE, down ₹11.85 (2.43%). The day’s low was ₹472.30 and high was ₹487.65, with a 52-week low of ₹384.60 and 52-week high of ₹531.00. The NSE symbol was listed as OIL, and live volume was 98,69,236.

Oil India also said it will host a conference call on Monday, August 10, 2026 at 13:00 hours (IST) to discuss its financial results for the first quarter of FY27. For investor queries, it provided contact details for DAM Capital Advisors Limited, including phone numbers and email addresses.

Regulatory compliance fine: waiver request disclosed

Oil India also disclosed that it requested BSE and NSE to waive a total fine of ₹5,49,880 (₹0.054988 crore) imposed for non-compliance with SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 during the quarter ended March 31, 2026. It said the penalties relate to Regulations 17(1), 18(1), and 19(1)/19(2), and that the exchanges require compliance before processing the waiver. The board approved the waiver request on June 29, 2026, with the company citing reasons beyond its control for the non-compliance.

What to track next

For investors tracking legal risk, the key near-term marker is the six-week window referenced in the July 29, 2026 order for depositing GST as per law, subject to the final outcome. For the disposed Assam land tax case, the practical follow-through is Assam’s stated plan to move an appropriate bill in the State Legislature to withdraw the tax on mineral oil.

Oil India’s August 10, 2026 conference call for Q1 FY27 results is the next scheduled forum where the company may provide operating context alongside the latest legal updates already filed with exchanges. Any further Supreme Court listings in the tagged GST-on-royalty matter (C.A. No. 10560/2025) will also remain an important trigger for clarity on timing.