What is the difference between nominal and real interest rates?

What is the difference between nominal and real interest rates?

• A. Nominal rate is adjusted for inflation; real rate is the stated rate.
• B. Real rate is the inflation-adjusted yield; nominal is inflation-adjusted yield.
• C. Nominal rate is the stated rate; real rate adjusts for inflation (approx. nominal minus inflation).
• D. Nominal rate measures unemployment; real rate measures growth.

Answer: (C)

The key idea is that the nominal rate is the rate you actually see quoted on a loan or investment, while the real rate shows how much you truly gain in purchasing power after inflation. The real rate adjusts for how much prices rise, so it reflects the true growth in value, not just the nominal payout. A handy rule of thumb is real rate ≈ nominal rate minus inflation: if the quoted rate is 6% and inflation is 2%, the real rate is about 4%, meaning your purchasing power rises about 4%. If inflation exceeds the nominal rate, the real rate can be negative, so you’d lose purchasing power even while earning interest. The remaining options mix up these concepts or bring in unrelated ideas. Nominal is not adjusted for inflation, and inflation adjustment is what the real rate measures, so saying both are inflation-adjusted (or tying the concept to unemployment or growth) isn’t correct.

The key idea is that the nominal rate is the rate you actually see quoted on a loan or investment, while the real rate shows how much you truly gain in purchasing power after inflation. The real rate adjusts for how much prices rise, so it reflects the true growth in value, not just the nominal payout. A handy rule of thumb is real rate ≈ nominal rate minus inflation: if the quoted rate is 6% and inflation is 2%, the real rate is about 4%, meaning your purchasing power rises about 4%. If inflation exceeds the nominal rate, the real rate can be negative, so you’d lose purchasing power even while earning interest.

The remaining options mix up these concepts or bring in unrelated ideas. Nominal is not adjusted for inflation, and inflation adjustment is what the real rate measures, so saying both are inflation-adjusted (or tying the concept to unemployment or growth) isn’t correct.