Monetary Policy's Limited Reach: Can Higher Rates Tame Supply-Side Inflation?

The effectiveness of monetary policy in controlling inflation is being debated, particularly when supply-side issues are at play. Theoretically, raising interest rates can slow down demand and control inflation. However, this approach may not be effective when dealing with supply-chain disruptions caused by factors like war or crop failures.

India's experience has shown that food price increases are often due to supply issues rather than excess demand. A higher repo rate cannot bring down prices in such cases.

The core inflation basket also reveals limitations of monetary policy. Prices of food and beverages in restaurants and hotels are influenced by factors like fuel costs, while gold prices are driven by global market rates.

Monetary policy must be nuanced and calibrated with inflation to maintain an equilibrium on the real interest rate. Forward-looking considerations of future inflation can also inform decisions.