How Much Control Does the Central Bank Have over Interest Rates?
It is a commonly accepted view these days that the central bank is a key factor in the determination of interest rates. By this way of thinking, the Fed determines the entire interest rate structure by influencing the short-term interest rates.
The central bank influences the short-term interest rates by means of the monetary liquidity. Thus, by buying assets the Fed adds to the monetary liquidity, thereby lowering rates. When it sells assets, the exact opposite takes place.
