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.