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Market story · 2 November 2026

Oil PSUs' refining windfall meets the fiscal recoupment test

By Anant Kacholia, HexaWealth Research

India’s state-run fuel retailers swung from a combined loss to a ₹30,106 crore profit in the September quarter. The figure represents nearly 39% of their total profit for the entire previous financial year. The surge was powered by gross refining margins that jumped to over $32 a barrel for BPCL and HPCL, from levels around $9-$11 a year ago, and by the recognition of government compensation for past LPG losses.

The windfall now faces a direct test from the government’s fiscal machinery. For the fortnight beginning October 31, the special additional excise duty on diesel exports was raised to ₹11.5 a litre from ₹8.5, and on aviation turbine fuel to ₹11 from ₹10.5. The duty on petrol exports was cut to zero from ₹2.5. These fortnightly revisions are a mechanism to recoup revenue when refining margins are high, directly clawing back a portion of the gains that drove the quarterly profit surge.

The subsidy overhang and inventory effects

Behind the headline profit sits a ₹67,900 crore pile of unpaid LPG under-recoveries, an obligation that continues to grow. Per-cylinder losses are projected to widen from ₹184 in September to ₹370 by December. Furthermore, about ₹7,000 crore of Indian Oil’s record ₹21,630 crore standalone profit came from a one-off inventory valuation gain, not recurring operational performance. BPCL and HPCL, without such large inventory gains, actually reported lower profits than a year ago despite the soaring refining margins.

For an investor in PSU stocks or energy sector funds, the quarter forces a separation of cyclical windfall from sustainable earnings. The rerating of these stocks hinges on whether high refining margins can hold against volatile crude prices and whether the government’s tax adjustments remain predictable. The current setup delivers bumper profits when margins are high, but reserves the right to reclaim a share of them through fiscal channels, capping the upside for shareholders.

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Frequently asked questions

What exactly changed in the windfall tax on fuels?
The government raised the special additional excise duty on diesel exports to ₹11.5 per litre from ₹8.5, and on aviation turbine fuel to ₹11 per litre from ₹10.5, for the fortnight starting October 31. The levy on petrol exports was cut to zero from ₹2.5 per litre.
How much of Indian Oil's Q2 profit was a one-time gain?
About ₹7,000 crore of Indian Oil's ₹21,630 crore standalone profit came from an inventory valuation gain. This is a non-cash, one-off accounting benefit that does not reflect recurring operational performance.
What are the current gross refining margins for BPCL and HPCL?
For the September quarter, BPCL reported a gross refining margin of $32.53 per barrel, up from $10.78 a year ago. HPCL's GRM was $32.15 per barrel, up from $8.80 a year ago.
What is the size of the unpaid LPG subsidy burden?
The accumulated LPG under-recoveries owed to the oil marketing companies stood at approximately ₹67,900 crore as of September 30, 2026. This liability continues to increase as per-cylinder losses are projected to widen.
Did foreign investors buy or sell Indian equities in October?
Foreign portfolio investors were net sellers of ₹34,843 crore in Indian equities for the month of October. However, they turned net buyers in the final week, purchasing around ₹6,300 crore between October 26 and 30.
What is the estimated size of Carlsberg India's IPO?
Carlsberg India's initial public offering is estimated at ₹6,700 crore. The offer will consist entirely of an offer for sale of up to 8.64 crore shares by its Singapore holding company, with no fresh issue of shares.