The bond amount is calculated using the following formula: . The money supply has to decrease if you want interest rates to increase.The price of money is the nominal interest rate, the quantity is how much money people hold, supply is the money supply, and demand is the demand for money. The demand for money is the relationship between the quantity of money people want to hold and the factors that determine that quantity. A primer on the basics and complexities of the global bond market. Learn about the relationship between bond prices and interest rates.