Interest rate is the amount charged by lenders to borrowers for the use of money, expressed as a percentage of the principal, or original amount borrowed; it can also be described alternatively as the cost to borrow money. For instance, an 8% interest rate for borrowing $100 a year will obligate a person to pay $108 at year-end.. . There are many factors that affect what interest rates people get on their mortgages and auto loans. Although these largely cannot be controlled, having knowledge of. . While many factors that affect the interest rate are uncontrollable, individuals can, to some degree, affect the interest rates they receive. Individual Credit Standing In the U.S.,. . The relationship between real interest rate, inflation, and the nominal rate is shown by the following equation: real rate + inflation = nominal rate In this equation, the nominal rate.
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