It has been more than 45 years since the two of us sat in free-market economist Vervon Orval Watts' economics class at Northwood University. He noted an interest rate is the incentive or reward charged by a lender of credit or money. For the borrower, it is the amount they are willing to part with or pay to gain cash or credit.
An interest rate consists of three parts. They are the time preference premium, debtor risk premium and inflationary risk premium.
The time preference premium is the original reason for loaning money. The average TPP portion of an interest rate is between 0 and 2 percent. It represents a borrower's time preference to have a good, service or asset today and pay extra via the interest rate, rather than waiting until able to pay in full. When a time preference is 0 percent, the borrower is willing to wait.
The debtor risk premium is inversely related to a customer's credit rating. The debtor's risk premium port…