Multiplication was never going to be easy
In an attempt to stave off recession, countries around the world have made extensive used of fiscal stimuli. Combinations of tax cuts and increases in government expenditure have been used to boost aggregate demand and thereby to halt falling national income. “The G20 group of economies … have introduced stimulus packages worth an average of 2% of GDP this year and 1.6% of GDP in 2010.”
But how much will national income respond to a particular fiscal stimulus? It depends on the size of the fiscal multiplier for each type of government expenditure increase or tax cut. The bigger the multiplier for each expansionary measure, the more will national income rise. Clearly, to estimate the effects of their fiscal measures, governments would very much like to know the size of these multipliers. But that’s not so easy, as the following article from The Economist explains.
Much ado about multipliers The Economist (24/9/09)