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Indian Oil Corporation is India's largest oil refining and fuel marketing company, operating the biggest refinery network in the country, a nationwide pipeline system, and the largest fuel retail network of petrol pumps, along with LPG distribution (Indane), aviation fuel, lubricants (Servo) and a growing petrochemicals portfolio. Revenue is driven by refined product sales; profitability swings with refining margins (GRMs) and marketing margins on petrol, diesel and LPG, which carry policy/under-recovery risk.
It is India's largest company by revenue among oil marketing companies and controls roughly a third of Indian refining capacity.
Indian Oil Corporation Ltd. is a constituent of NIFTY 100, NIFTY 200, NIFTY 500, NIFTY ENERGY, NIFTY INFRA, NIFTY NEXT 50. See where it sits on the market heatmap →
Consolidated annual figures taken from Indian Oil Corporation Ltd.'s own filed statements — not estimates, and not restated by us. The most recent period shown is FY26 (year ended 31 Mar 2026).
| Metric | FY26 | FY25 | FY24 |
|---|---|---|---|
| EPS (basic, ₹) | 30.57 | 9.87 | 30.30 |
| Book value / share (₹) | 159.72 | 135.27 | 133.25 |
| Return on equity | 18.7% | 7.1% | 22.2% |
| Return on capital employed | 18.4% | 7.0% | 22.4% |
| Operating margin | 6.5% | 2.2% | 6.8% |
| Net margin | 4.8% | 1.6% | 4.9% |
| EBITDA | ₹77,062 Cr | ₹35,991 Cr | ₹75,591 Cr |
| Free cash flow | ₹47,779 Cr | ₹-151 Cr | ₹33,923 Cr |
| Total debt | ₹1,31,822 Cr | ₹1,52,271 Cr | ₹1,32,628 Cr |
| Debt to equity | 0.58 | 0.80 | 0.70 |
| Interest coverage | 7.1 | 2.1 | 7.6 |
| Current ratio | 0.73 | 0.68 | 0.73 |
| Shares outstanding | 14,12,12,40,000 | 14,12,12,40,000 | 14,12,12,40,000 |
Open the full income statement, balance sheet and cash flow for IOC →
As disclosed for the quarter ended 30 Jun 2026.
Institutional ownership changes quarter to quarter. See daily FII and DII flows across the market →
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