Gross Domestic Product (GDP) measures the total market value of final goods and services produced within a country during a given period.

Why it matters:

  • it is a broad measure of economic activity
  • rising GDP usually signals expansion
  • falling GDP often signals weakness or recession

Important detail:

  • GDP counts final output to avoid double counting
  • it focuses on production within the country

GDP is a core indicator when studying the Business Cycle and the Inflation Index.