Macroeconomic equilibrium

Macroeconomic equilibrium

Macroeconomic Equilibrium

Definition

  • Macroeconomic equilibrium occurs when the quantity of aggregate demand equals the quantity of aggregate supply in an economy.
  • It is the point where the real quantity of output demanded and supplied meet, determining the equilibrium price level and real GDP.

Achievement of Equilibrium

  • Achieved where the aggregate demand curve intersects with the aggregate supply curve on a graph depicting the two.
  • This point of intersection signifies the equilibrium price level and the real GDP of an economy.

Short-run and Long-run Equilibrium

  • Short-run equilibrium occurs when the quantity of aggregate demand equals the short-run aggregate supply.
  • Long-run equilibrium occurs when the quantity of aggregate demand equals the long-run aggregate supply, representing the economy’s full employment output.

Changes in Equilibrium

  • If aggregate demand increases (shifts right), a new equilibrium will be established with a higher price level and more output.
  • If aggregate demand decreases (shifts left), a new equilibrium occurs with a lower price level and less output.
  • If short-run aggregate supply decreases (shifts left), a new equilibrium with a higher price level and less output will be established.
  • If short-run aggregate supply increases (shifts right), the new equilibrium will have a lower price level and more output.

Importance of Equilibrium

  • Macroeconomic equilibrium helps to determine the overall price level and GDP of the economy.
  • It shows the state of balance in the economy and plays a key role in economic analysis and policy formulation.

Limitations

  • It might not denote an optimal or desirable output level, but only the point of balance between aggregate demand and supply.
  • There may be a gap between the potential and actual GDP, known as an output gap, in the short-run equilibrium.
  • Changes in the economy constantly shift aggregate demand and supply, so the equilibrium is often a moving target.