Fiscal multiplier
THE RATIO OF THE CHANGE IN AGGREGATE DEMAND TO THE CHANGE IN GOVERNMENT SPENDING THAT CAUSED IT
Keynesian multiplier; Spending multiplier; Multiplier Effect
In economics, the fiscal multiplier (not to be confused with the money multiplier) is the ratio of change in national income arising from a change in government spending. More generally, the exogenous spending multiplier is the ratio of change in national income arising from any autonomous change in spending (including private investment spending, consumer spending, government spending, or spending by foreigners on the country's exports).