Economic growth

Economics · Government and the macroeconomy. The idea in plain words, the rules to remember, the mistake to avoid and a worked example, written and checked by Mega Lecture.

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The idea

Economic growth is an increase in a country's real GDP over time. Real GDP is the value of output with the effect of inflation removed, so it shows whether more goods and services are in fact being produced.

Growth comes from a rise in total demand, which uses spare capacity, or from more or better resources, which raises capacity. It can bring higher incomes, more jobs and more tax revenue, but also inflation, pollution, faster use of resources and wider inequality.

A recession is the opposite: real GDP falls for two quarters in a row. Unemployment rises, firms' profits fall, and the government collects less tax while paying more benefits.

Rules to remember

Common mistake

A fall in the growth rate is not a recession. If growth slows from 5% to 2%, real GDP is still rising; a recession needs real GDP to fall.

Worked example

A country's real GDP rises from $250 bn to $260 bn in a year. What is its rate of economic growth?

  1. Change in real GDP = 260 − 250 = $10 bn.
  2. Divide by the original figure: 10 ÷ 250 = 0.04.
  3. Multiply by 100: 0.04 × 100 = 4.

Answer: The rate of economic growth is 4%.

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