Reserve Bank of India (RBI) Governor Raghuram Rajan today hinted at increasing the key rate at the second quarter monetary policy review tomorrow, citing urgency to anchor inflationary expectations.

"With the normalisation of exceptional monetary measures under way, incremental calibration will be shaped by changes in the growth-inflation balance, keeping macroeconomic stability in consideration," he said in the Macroeconomic and Monetary Developments report on the eve of the policy announcement.

However, the report adds, "Macroeconomic risks still exist with some upward pressure on inflation and the possibility of fiscal slippage, thus posing new challenges."

Acknowledging that growth has dipped below potential, Raghuram Rajan said a revival will require "complementary monetary, fiscal and regulatory policies," apart from increasing fuel prices to contain demand, productivity enhancement and quick project implementation.

The report said "we can expect a modest recovery in growth in the second half on good monsoon, and an uptick in exports and industrial production."

Raghuram Rajan, who took over as head of the central bank last month, warned that there is a risk of fiscal slippage due to the widening revenue deficit and high capital expenditure by the government in the first half, which has exhausted over 74.6 per cent of the fiscal deficit target already.

An RBI study of professional forecasters said the average WPI inflation will climb up to 6 per cent from the earlier median expectation of 5.3 per cent, while on the growth front, they reduced the projection for the current fiscal to 4.8 per cent from 5.7 per cent earlier.

High food prices, especially of onion and some other vegetables, pushed up September inflation to a seven-month high of 6.46 per cent.

Inflation as measured by the wholesale price index (WPI) rose for the fourth month in a row. Inflation was 6.1 per cent in August and 5.85 per cent (revised upward from 5.79 per cent) in July. In September last year, it was 8.07 per cent.

The sharpest increase was in onion prices, which jumped 322.94 per cent in September, over the same month last