Oil at multi-month highs: the biggest risk to India’s market rally

India's stock market had a remarkable April. Smallcaps surged 17%. The Nifty 50 recovered sharply. Sentiment, after a bruising 2025, finally felt like it was turning. Then oil reminded everyone why it's never far from the centre of India's macro story.

Brent crude has climbed nearly 60% over the past year, with WTI approaching $99 per barrel in May 2026. The near-shutdown of traffic through the Strait of Hormuz, following the US-Iran conflict, has caused what the IEA has described as the largest oil supply shock on record. Saudi Aramco's CEO warned that markets are losing around 100 million barrels of supply each week. For most economies, high oil prices are uncomfortable. For India, it's a different category of problem altogether.

Why does oil hit India harder than almost anywhere else

India imports roughly 85-90% of its crude oil requirements. Every $10 increase in global crude prices raises the country's annual import bill by an estimated $13 to $14 billion. 

That number doesn't sit in isolation. It flows through the current account deficit, which widens and puts pressure on the rupee. A weaker rupee makes oil even more expensive in rupee terms, which deepens the import bill further. That circular pressure is the core of the oil problem for India, and it's playing out right now.

The rupee hit a record low of 95.23 against the dollar on May 11, 2026, pushed there by the oil-driven current account deterioration and continued FII outflows. Markets took PM Modi's austerity appeal on fuel consumption as a signal that policymakers are genuinely worried about foreign currency reserve pressure. 

If oil prices remain elevated, analysts project India's inflation could reach around 6.9% this fiscal year, well above the RBI's 6% limit. The trade deficit is expected to widen to potentially 2.1% of GDP if Brent crude averages $95 a barrel through FY27. 

The Strait of Hormuz problem

Roughly 20% of the world's oil supply and 25% of global LNG passes through the Strait of Hormuz. Any extended closure has severe consequences for India, which sources a significant portion of its energy from West Asia. 

India had built a partial buffer through Russian crude imports, which offered discounted barrels outside the Gulf routing. But that's now under pressure too. US pressure on India to reduce Russian crude imports has led to India scaling back its intake, with Russian barrels being redirected primarily toward China. Indian refiners are being pushed back toward more expensive Middle Eastern and US alternatives.

The discount that made Russian crude so valuable to Indian margins is narrowing. And the alternative supply routes are more expensive and more exposed to exactly the geopolitical disruption that's driving prices higher.

What it does to the RBI's options

FIIs pulled out nearly ₹1.2 lakh crore from Indian equities in March 2026 alone, the sharpest single-month sell-off of the fiscal year. The RBI kept its repo rate at 5.25% at the April 2026 meeting, widely expected given the global uncertainty and rising inflation risks from elevated crude.

The bind is real. The RBI cut rates in December 2025 to support domestic growth. That made the rupee marginally less attractive to foreign investors. Now, with inflation risk rising due to oil, the case for further easing has largely closed. Raising rates to defend the currency and control inflation would hurt the growth momentum that the rate cuts were designed to support. The RBI faces a precarious path, likely maintaining its neutral stance while balancing growth support against the threat of imported inflation. 

There's also the RBI study worth keeping in mind here. For every $10 per barrel increase in crude prices, India's inflation rises by approximately 49 basis points. If the government absorbs the entire price shock rather than passing it to consumers, the fiscal deficit widens by 43 basis points. With oil having risen far more than $10 from a year ago, the arithmetic is uncomfortable either way. 

What it means sector by sector

Not every sector is equally exposed, and that distinction matters for investors.

Oil marketing companies are in an acutely difficult position. OMCs face severe pressure on marketing margins, which are expected to moderate to ₹6 to 8 per litre in FY26. If retail fuel prices are not adjusted in line with rising crude costs, their profitability and balance sheets will take a serious hit. HPCL, BPCL, and IOCL have been absorbing costs to keep pump prices stable, but that strategy has a ceiling. 

Upstream producers like ONGC and Oil India are in the opposite camp. Higher crude prices improve their realisations directly. If oil stays elevated, their earnings look considerably stronger than the current market pricing suggests.

Aviation is one of the most exposed sectors. Jet fuel is already the largest cost item for domestic airlines. At $95 to $100 oil, margins that looked reasonable three months ago have eroded quickly.

IT and pharma continue to sit in a more protected position. Their revenue comes in dollars, and the rupee weakness that oil is causing actually improves their reported earnings. For investors looking for a partial hedge against the oil-inflation-rupee feedback loop, export-oriented sectors offer some natural insulation.

The longer-term supply question

The ADB has revised its reference scenario to $96 per barrel as the average crude oil price for 2026. Analysts at Ambit expect the geopolitical risk premium to remain embedded in prices until at least FY30. That's not a crisis forecast, but it is a structural reset of the price environment India has to plan around.

There's also a lagged inflationary channel through fertilisers that is underappreciated. Higher oil raises fertiliser input costs, which feed into food prices with a three to six-month delay. The full inflationary impact may not show up in headline CPI data until late FY27. Markets watching monthly CPI prints may be systematically underestimating the pressure that's building. 

What investors should think about

The April rally was real. The earnings recovery story for India in FY27 is real. But oil at these levels is a genuine tax on the entire macro environment.

Investors who went heavily into rate-sensitive sectors like real estate, automobiles, and banking on the assumption that the RBI rate-cut cycle would continue should be reassessing that view. The fiscal space for further easing has narrowed. Any further escalation in West Asia narrows it further.

Gold's move higher through this period is not coincidental. Adding gold as a geopolitical hedge and increasing allocation to dollar-linked assets are the moves analysts broadly suggest for portfolios navigating continued rupee pressure. Neither of those positions requires a view on when the Hormuz disruption ends. They both perform if the disruption continues.

Conclusion

India's growth story hasn't broken. Domestic consumption is holding, the capex cycle is moving, and corporate balance sheets are mostly clean. But oil at $95 to $100 per barrel, against a rupee already under sustained pressure, narrows the margin for error considerably.

The market rally that began in April priced in a lot of the positives. It didn't fully price in what happens if oil stays here for another two or three quarters. That gap between the optimistic scenario and the oil-driven reality is where portfolios need attention right now.

This article is for informational purposes only and does not constitute investment advice. Please consult a SEBI-registered financial advisor before making investment decisions.