Granby01033

Not as much as you think. Here's why:

Suppose that, at the beginning of the fiscal year, Congress appropriates $100 billion extra for infrastructure projects. At the end of the fiscal year, how much higher will the deficit turn out to be, compared to what it otherwise would have been?

The obvious answer, and the one that usually seems to be implicitly assumed by the media and the pundits, is $100 billion. But if you think about it carefully, it should become obvious that the obvious answer is the wrong answer.

The government is going to use most of that money to hire people and to buy things. Many of the people it will hire are people who were previously unemployed. Many are leaving other jobs which will subsequently be filled by people who were unemployed. These previously unemployed people, who may have been collecting benefits, will now be paying taxes. Those taxes will reduce the deficit, as will the reduced benefit payments. Moreover, for the businesses from which the government purchases, their profits will rise, and they will pay additional taxes on those additional profits. And they may expand and hire new people, or retain people that would otherwise have been laid off. And (if you believe in a multiplier effect), all the newly employed people, as well as the owners of the businesses, will spend more money, thus providing more profits and more employment for others, who will also pay taxes and stop collecting benefits. And so on. The ultimate effect of the original expenditure on the budget deficit will be considerably smaller than $100 billion.

The taxes paid by people employed by stimulus money offset the cost of the stimulus.

--Mb