The Reserve Bank of India (RBI) is increasingly expected to raise interest rates next week, but the bigger question is whether October marks the start of a longer tightening cycle. Broadening inflation, resilient growth, higher crude prices and pressure on the rupee have pushed several major banks towards more hawkish forecasts, with Goldman Sachs, Morgan Stanley and Bank of America seeing scope for the repo rate to rise to 6.25% by the first half of 2027. Nomura expects a shorter cycle, stopping at 5.75%.

Inflation has spread beyond a handful of volatile categories, economic growth remains strong and global financial conditions have tightened. Crude oil prices and weakness in the rupee add another layer of pressure. The result is a marked shift from August, when the RBI left the repo rate unchanged at 5.25% and retained a neutral stance.

About 60% of economists polled by Reuters expect the Monetary Policy Committee (MPC) to raise the repo rate by 25 basis points (bps) to 5.50% at its 5-7 October meeting. One basis point is one-hundredth of a percentage point.

Goldman Sachs has moved firmly into the more hawkish camp. Economists Santanu Sengupta, Arjun Varma and Andrew Tilton now expect four quarter-point increases, beginning in October and continuing through the first half of 2027. That would take the repo rate to 6.25%, 100 basis points above its current level.

The bank had previously expected the RBI to wait until December before tightening. It changed that call after stronger growth, broader inflation and tighter global monetary conditions altered the backdrop.

Morgan Stanley and Bank of America Securities also see scope for 100 bps of tightening. Nomura is more restrained, expecting increases in October and December followed by a pause. That disagreement is now at the center of the rate debate.

Inflation is spreading

India’s headline consumer inflation rose to 4.82% in August, moving further above the RBI’s 4% medium-term target. What has changed more sharply is the breadth of the increase. Prices in almost half of India’s inflation basket are now rising at 4% or more from a year ago, compared with about one-third in March. That makes it harder to treat the current increase as a temporary problem confined mainly to food or fuel.

Goldman sees the same pattern in underlying inflation. Higher input costs are feeding into core goods prices, while rents and transport costs are lifting services inflation. About 30% of the core-services basket is showing sequential annualized inflation above 6%, it said.

Goldman expects headline inflation to reach 5.8% in the fourth quarter of 2026.

Interest rates have limited effect on a sudden jump in vegetable prices or an isolated fuel shock. The case for tighter monetary policy becomes stronger when those increases begin feeding through to services, manufactured goods and inflation expectations.

The August MPC minutes had already hinted at that concern. Members acknowledged that food and fuel inflation could generate second-round effects and indicated that broader, more persistent price pressures would require a policy response, Goldman said.

Strong growth gives the RBI room

The other side of the equation has also shifted. India’s economy expanded 7.8% in the April-June quarter from a year ago, stronger than expected. Nominal gross domestic product (GDP) growth reached 10.3%, a two-year high, with investment among the main drivers.

That resilience gives the RBI more freedom to respond to inflation. A central bank is more reluctant to raise rates when growth is weakening sharply because higher borrowing costs can amplify the slowdown. India currently presents the opposite problem. Demand is holding up even as price pressures increase.

Goldman argues that this strength has persisted despite limited foreign portfolio participation, US tariff shocks and a worsening terms of trade caused by higher energy prices.  That is one reason several forecasters have shifted their first rate increase forward.

Bank of America Securities now expects the RBI to raise rates by 100 bps through the first half of 2027. Morgan Stanley also expects four quarter-point increases, taking the repo rate to 6.25%.

Nomura sees a shorter adjustment

Not every economist sees the start of a prolonged tightening cycle. Nomura expects a 25-basis-point increase in October and another in December, taking the repo rate to 5.75%. That leaves a sizeable gap between the two camps.

Goldman, Morgan Stanley and Bank of America see rates reaching 6.25%. Nomura sees 5.75% as the terminal rate. The difference is 50 bps, but its implications run through the economy. A shorter adjustment would look more like insurance against an inflation flare-up. A four-hike cycle would represent a more persistent effort to restrain demand and rebuild a buffer against imported inflation and global financial stress.

Oil and the rupee narrow the RBI’s options

Domestic data are not the RBI’s only concern. Higher crude prices are particularly difficult for India because the country imports most of the oil it consumes. A prolonged rise feeds directly into the import bill, domestic fuel and transport costs and the current account. It can also put further pressure on the rupee.

Those effects reinforce one another. A weaker currency raises the local cost of imported commodities, while higher oil prices increase demand for dollars from Indian importers.

Global rates add another constraint.

The US Federal Reserve raised rates in September for the first time since 2023. Higher Treasury yields have increased the appeal of dollar assets at a time when foreign investors have already been reducing exposure to India.

Goldman lists tighter global monetary conditions, elevated US Treasury yields and renewed Middle East-related risks to crude prices among the reasons for bringing its RBI call forward.

The case for simply following the Fed has weakened slightly since the Goldman report was published. Weaker US labor-market data have reduced expectations of another immediate Fed increase. For the RBI, that means domestic inflation is likely to carry more weight than any need to match the Fed meeting for meeting.

The stance may carry as much weight as the rate

Goldman also expects the RBI to consider moving away from its neutral stance. It sees scope for the MPC to adopt either “calibrated tightening” or “withdrawal of accommodation.”  That change would alter how markets interpret an October rate increase.

A 25-basis-point move accompanied by a neutral stance would leave the RBI room to wait and assess incoming inflation, oil and growth data. A shift to a tightening stance would carry a different message. It would suggest that October is part of a sequence rather than an isolated move.

For banks, that distinction affects expectations for lending and deposit rates. For companies, it changes the cost of refinancing and new borrowing. For bond investors, it affects where yields settle across maturities.

Banks may initially benefit from higher lending rates, but deposit costs typically catch up. Borrowers with floating-rate loans would face higher interest payments. Rate-sensitive sectors such as housing, automobiles and some consumer businesses would be more exposed if the cycle extends into next year.