What is inflation, and how does it affect real income?

• A. Inflation is the rate at which prices rise; real income is nominal income adjusted for inflation; rising inflation reduces purchasing power.
• B. Inflation is the growth of GDP; real income is the total wages; rising inflation increases purchasing power.
• C. Inflation is the decline in prices; real income equals nominal income; rising inflation has no effect on purchasing power.
• D. Inflation is the measure of unemployment; real income is debt payments; rising inflation increases taxes.

Answer: (A)

Inflation is the rate at which prices rise, and real income measures how much your income can buy after accounting for those price changes. When prices go up, purchasing power falls unless your wages rise by a similar amount. Real income is your nominal income adjusted for inflation, so if your paycheck stays the same but prices climb, your real income declines. For example, if you earn $50,000 and inflation is 3%, the amount of goods and services you can buy with that $50,000 is reduced relative to before; wages that keep pace with inflation will keep real income steady, while slower wage growth means lower real income.

The other descriptions don’t fit because inflation is not GDP growth, real income is not simply total wages (it’s wages adjusted for price changes), and rising inflation does affect purchasing power. Inflation is not a measure of unemployment, and real income isn’t debt payments.