effective demand

In economics, effective demand refers to the total demand in an economy, encompassing consumption expenditures, investment expenditures, and government spending. This concept, central to Keynesian economics, was developed by John Maynard Keynes.12

Keynesian theory posits that when effective demand falls short of an economy's productive capacity, it leads to unemployment and depression. Conversely, when demand exceeds capacity, inflation occurs. Unlike classical economics, which assumes an automatic tendency toward full employment, Keynes argued that economies do not necessarily reach full employment on their own. The level of effective demand is crucial because it influences the overall national income and employment levels. A lack of effective demand means that even if people are willing to work and firms are willing to hire, the unemployed may not have the cash to make their demand for goods and services effective, leading to persistent unemployment.13