Inflation–Growth Trade-off

The inflation-growth trade-off arises because monetary policy influences both aggregate demand and prices. Lower interest rates can support consumption, investment and output, but may intensify inflation; higher rates can restrain inflation but may weaken demand and near-term growth. This trade-off is mainly short-run and varies with spare capacity, inflation expectations and the source of inflation.

How the trade-off operates

Monetary policy affects spending through interest rates, credit conditions, asset prices, the exchange rate and expectations, usually with time lags.

• When output is below potential, monetary easing can raise demand and production with relatively limited price pressure.
• When demand approaches productive capacity, further stimulus is more likely to raise prices than real output.
• Monetary tightening lowers demand and inflationary pressure, but can temporarily reduce investment, employment and output growth.

Why the trade-off is not fixed

The appropriate balance depends on whether inflation originates from excess demand or from a supply shock.

• Demand-driven inflation can generally be restrained through tighter monetary conditions, though at a cost to near-term output.
• A supply shock can simultaneously raise inflation and reduce output, making the policy choice more difficult.
• If inflation expectations become unanchored, temporary inflation can spread to wages and prices, requiring stronger tightening.
• In the long run, monetary policy cannot permanently raise real growth above the economy's potential output; durable growth depends chiefly on productivity, investment and structural capacity.

India's policy framework

The Reserve Bank of India Act, 1934, as amended in 2016, states that the primary objective of monetary policy is to maintain price stability while keeping in mind the objective of growth. This flexible inflation-targeting approach recognises that stable prices support sustainable growth, while allowing policy to consider output conditions and the nature of shocks.

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