"How does monetary policy affect the U.S. economy? The point of implementing policy through raising or lowering interest rates is to affect people's and firms' demand for goods and services. This section discusses how policy actions affect real interest rates, which in turn affect demand and ultimately output, employment, and inflation. What are real interest rates and why do they matter?
For the most part, the demand for goods and services is not related to the market interest rates quoted in the financial pages of newspapers, known as nominal rates. Instead, it is related to real interest rates—that is, nominal interest rates minus the expected rate of inflation.For example, a borrower is likely to feel a lot happier about a car loan at 8% when the inflation rate is close to 10% (as it was in the late 1970s) than when the inflation rate is close to 2% (as it was in the late 1990s). In the first case, the real (or inflation-adjusted) value of the money that the borrower would pay back would actually be lower than the real value of the money when it was borrowed. Borrowers, of course, would love this situation, while lenders would be disinclined to make any loans." Read more.
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