Before continuing, we must understand exactly what interest rates mean. By holding financial instruments , such as loans or bonds. Savers and financial institutions extend credits to those individuals or firms that issue the instruments. The amount of credit extended is the principal amount of the loan or the bond. Those who hold financial instruments do so because they receive payments from the issuers in the form of interest. The percentage return earned is the interest rate or rate of return.
Rate of return is the price of credit in financial markets and is usually expressed as a percentage (%) of the total amount borrowed that is to be paid each year (over and above the repayment of the principal, or amount borrowed). Thus, it is the price of credit of the rate of exchange between the present and the future.
Rate of returns (r) vary given interest rate (i). It is the value of i that just equates the present value (PV) of the benefits of the extra capital when discounted at i to its cost (Pk). That is, r is defined as : r=MRP/Pk, where: MRP=Marginal Revenue Product
Pk= Cost
We would however, take a look at how interest rate is calculated, various theoretical analyses that seek to explain the determination of interest rates, distinctions between nominal and real interest rates. Finally, we shall relate it to the case of the Ghanaian economy and look at the consequences of the high interest rates in
References: Business and Financial times issue number 689 Bank of Ghana Annual report (1997) The state of the Ghanaian economy (2004) The internet (Nii K