India's retail inflation climbed to 5.54 per cent in September 2026, the highest in recent months and approaching the Reserve Bank of India's upper tolerance limit of 6 per cent. The RBI's inflation targeting framework mandates keeping CPI inflation within a band of 2 to 6 per cent, with a midpoint target of 4 per cent. The surge has renewed debate over whether the Monetary Policy Committee will consider another rate hike at its next scheduled meeting.

India operates a flexible inflation targeting framework under the RBI Act, 1934 (amended 2016). The government, in consultation with the RBI, sets a CPI inflation target of 4 per cent with a tolerance band of ±2 per cent — meaning the lower bound is 2 per cent and the upper bound is 6 per cent. If inflation breaches the upper limit for three consecutive quarters, the MPC must submit a report to the government explaining the failure and remedial steps.

The MPC uses the repo rate as its primary instrument. When inflation rises, the MPC raises the repo rate, which increases the cost of borrowing for commercial banks. Banks then raise lending rates, credit becomes more expensive, consumption and investment slow, aggregate demand cools, and inflation moderates over time — typically with a lag of 2–4 quarters. This is the monetary transmission mechanism.

The Liquidity Adjustment Facility (LAF) corridor matters here: the repo rate is the ceiling of the LAF corridor, while the Standing Deposit Facility (SDF) rate (repo minus 25 bps) acts as the floor. Any repo hike reshapes this corridor and affects overnight money market rates, which then ripple into term lending rates.

At 5.54 per cent, inflation is within the tolerance band but uncomfortably close to the 6 per cent trigger. The MPC's stance — whether 'withdrawal of accommodation,' 'neutral,' or 'accommodative' — signals the direction of future moves. A breach of 6 per cent for three straight quarters has statutory consequences, making the current reading a live policy flashpoint.