To Spend the U.S. Government Surplus or to Increase the Deficit? A Numerical Analysis of the Policy Options

This paper provides a numerical analysis of the likely benefits from adopting alternative ways of reducing the projected fiscal surplus (as of the summer 2001) in the United States economy. Calibrating a small growth model, our results suggest that investing the surplus in public capital is likely to yield the greatest long-run welfare gains, although decreasing the capital income tax is only marginally inferior. Both these options dominate increasing government consumption expenditure or decreasing the tax on labor income. By shifting resources from consumption toward capital the two superior policies involve sharp intertemporal tradeoffs in welfare; significant short-run welfare losses are more than compensated by large long-run welfare gains. By contrast, the two inferior options are gradually welfare-improving through time. A crucial factor in determining the benefits of reducing the government surplus through spending is the size of the government sector relative to the social optimum. We find that the second-best optimum is to increase both forms of government expenditure to their respective social optima, while at the same time restructuring taxes by reducing the tax on capital and raising the tax on wage income to achieve the targeted reduction in the surplus