Inflation is as violent as a mugger, as frightening as an armed robber and as deadly as a hit man. -Ronald Reagan
As you might know, the Reserve Bank of India recently raised its overnight repo rate by 40 basis points from 4% to 4.40 % and cash reserve ratio by 50 basis points from 4% to 4.5% with immediate effect in an attempt to curb the money flow in the market and tame inflation for a short period of time. I say for a short period of time because of the concept of money neutrality, which states that changes in interest rates cannot affect the economy's real variable, but can only affect it for a short period of time and in the long run the real output in the economy will be the same.
The goals behind increase in interest rate are decrease in consumption level, money flow and increase in saving rate, because higher flow of money in the market leads to inflation.
Steps showing how repo rate (official rate) helps in controlling inflation:
In order to understand monetary transmission, how it relates to inflation, and the role of central banks.
The term monetary transmission refers to the process by which monetary policy decisions affect economic growth, prices, and other aspects of the economy for a short period of time. This is while the real variables of the economy remain unchanged.
Now let's break this definition pointwise with the reference of the above mentioned chart :
Official rates, or repo rates, are the rates at which the Reserve Bank of India lends money to banks when they have a shortage of funds. Banks have to keep a certain amount of cash at hand at all times. In case, when banks don’t have much funds to maintain the limit, they borrow funds from the RBI at the current repo rate.
Changes in official interest rates can have an effect on demand through multiple channels, as shown in the above chart
So let’s dive into the effect of contractionary monetary policy (a rise in the interest rate that shrinks the economy) implemented through an increase in the policy rate.
By accumulating all these effects act to decrease aggregate demand and put downward pressure on the price level. When there is any fall down in the policy rate it automatically affects the price level through the same channels, but in the inverse direction.