Waiting Out Oil Could Cost the RBI More

As oil costs spread into wider price revisions, monetary policy may become more effective. Waiting could raise the eventual cost of action

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By B Sharathbabu

B Sharathbabu is a research scholar and a dealer in the treasury department of a private bank.

November 6, 2026 at 4:30 AM IST

As the oil shock spreads beyond fuel, the Reserve Bank of India faces a changing calculation. Once firms start revising prices widely, monetary tightening may become more effective, reducing the growth cost of bringing inflation down. The case for looking through the shock therefore needs to be reassessed as it travels through the economy.

Restaurant meals illustrate the pressure. On November 3, The Financial Express reported that restaurant associations in Bengaluru, Mumbai and Pune expected menu prices to rise by 10–15%, citing higher food, commercial LPG and other costs. Some establishments were preparing yet another price increase after revising prices earlier this year.

When crude oil prices jump, central banks usually look through the first round of price increases. India imports most of its crude. If the RBI raises the repo rate, people will borrow and spend a little less, but that cannot resolve an overseas supply disruption.

A bulletin from the Bank for International Settlements on October 15 backs this approach while inflation expectations remain anchored. With oil reserves drawn down and traffic through the Strait of Hormuz still thin, however, it sees a higher risk of sharper price increases.

Widening Pressures
Costlier diesel raises freight rates. Freight costs then show up in the price of soap and biscuits. Commercial LPG shows up in the restaurant bill. September’s data provide a snapshot of these pressures.

Stage

Measure (September 2026)

Reading

At the source

WPI fuel and power

25.85%

Factory gate

WPI, all commodities

11.39%

Kitchen

CPI food (CFPI)

7.74%

Household basket

CPI headline

5.54%

Underlying prices

Core CPI (excluding food and fuel)

4.6%, up from 3.9% in May–July

What people expect

Households, one year ahead

10%

Sources: WPI; MoSPI, CPI; core CPI from ICRA and Acuité; RBI household survey, September 2026.

The minutes of the October meeting, released on October 21, show the debate inside the Monetary Policy Committee. Governor Sanjay Malhotra said monetary policy primarily acts by curtailing second-round effects of supply shocks. Indranil Bhattacharyya pointed to increasing evidence of input cost pressures passing through in restaurants and cooked meals. Two external members, Ram Singh and Nagesh Kumar, preferred retaining a neutral stance. Their disagreement concerns how far policy should commit while the inflation shock is still evolving.

Looking through an oil shock assumes that policymakers see its inflationary effect as temporary. Households told the RBI in its September survey that they expect prices to rise by 10% over the next year. Persistent increases in familiar purchases can make that view harder to dislodge.

But a restaurant recovering higher LPG costs does not, by itself, establish second-round inflation. The RBI acknowledges that indirect cost increases and changes in pricing behaviour are difficult to distinguish. The question is whether repeated price increases are becoming embedded in expectations and business decisions.

Policy Window
Economists use the Phillips curve to describe how inflation responds to demand. If its slope is flat, cutting inflation needs a larger slowdown. If it is steep, a smaller slowdown can be enough.

The slope changes with circumstances. Firms already revising prices frequently may hold back the next increase sooner when sales slow. The BIS bulletin argues that a shock causing widespread repricing may also make inflation more sensitive to monetary policy. That could reduce the output cost of bringing inflation down.

This is a possibility, not evidence that India’s curve has already steepened. It nevertheless changes the calculation: waiting for unmistakable evidence of persistent inflation could allow pricing habits to harden before policy responds.

Higher rates can also slow the repair of supply, since firms need loans to rebuild stocks and find new suppliers. Targeted help, such as credit guarantees for affected sectors, can support that adjustment without broad price subsidies weakening the incentive to switch suppliers.

The RBI’s 25 basis point hike on October 7 suggests it has noticed the widening risks. Four things are worth watching: core inflation over three months rather than a year, the number of CPI items rising faster than 6%, services and rents, and the next household and industrial surveys.

A price that rises once is a shock. Repeated increases can change what people expect. The RBI’s task is to recognise when looking through becomes costly, before inflation’s spread demands a more painful response. 

Also Read: The Kitchen and the Dealing Room: Two Inflation Realities in India