How large are the effects of tax changes?

Carlo Favero () and Francesco Giavazzi ()

No 15303, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We use the time series of shifts in U.S. Federal tax liabilities constructed by Romer and Romer to estimate tax multipliers. Differently from the single-equation approach adopted by Romer and Romer, our estimation strategy (a Var that includes output, government spending and revenues, inflation and the nominal interest rate) does not rely upon the assumption that tax shocks are orthogonal to each other as well as to lagged values of other macro variables. Our estimated multiplier is much smaller: one, rather than three at a three-year horizon. When we split the sample in two sub-samples (before and after 1980) we find, before 1980, a multiplier whose size is never greater than one, after 1980 a multiplier not significantly different from zero. Following the findings in Bohn (1998), we also experiment with a model that includes debt and the non-linear government budget constraint. We find that, while in general not very important, the non-linearity that arises from the budget constraint makes a difference after 1980, when the response of fiscal variables to the level of the debt becomes stronger.

JEL-codes: E62 H60 (search for similar items in EconPapers)
Date: 2009-08
New Economics Papers: this item is included in nep-cba and nep-mac
Note: IFM
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (28)

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Related works:
Working Paper: How Large Are the Effects of Tax Changes? (2009)
Working Paper: How large are the effects of tax changes? (2009)
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