Financial Markets and the Economy
Demand, Supply, and Equilibrium in the Money Market
The Supply of Money
The supply curve of money shows the
relationship between the quantity of money supplied and the market
interest rate, all other determinants of supply unchanged. We have
learned that the Fed, through its open-market operations, determines the
total quantity of reserves in the banking system. We shall assume that
banks increase the money supply in fixed proportion to their reserves.
Because the quantity of reserves is determined by Federal Reserve
policy, we draw the supply curve of money in Figure 10.7 "The Supply
Curve of Money" as a vertical line, determined by the Fed's monetary
policies. In drawing the supply curve of money as a vertical line, we
are assuming the money supply does not depend on the interest rate.
Changing the quantity of reserves and hence the money supply is an
example of monetary policy.
Figure 10.7 The Supply Curve of Money
We
assume that the quantity of money supplied in the economy is determined
as a fixed multiple of the quantity of bank reserves, which is
determined by the Fed. The supply curve of money is a vertical line at
that quantity.