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THE FALLACY OF FISCAL DISCIPLINE

Published online by Cambridge University Press:  12 July 2018

Paolo Canofari*
Affiliation:
LUISS School of European Political Economy
Alessandro Piergallini
Affiliation:
University of Rome Tor Vergata
Giovanni Piersanti
Affiliation:
University of Teramo
*
Address correspondence to: Paolo Canofari, LUISS School of European Political Economy, Via di Villa Emiliani 14, 00197 Rome, Italy; e-mail: pcanofari@luiss.it.
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Abstract

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Fiscal discipline is commonly evaluated on the basis of the debt–gross domestic product ratio, which exhibits a stock variable measured relative to a flow variable. This way of monitoring debt solvency is arguably not consistent with transversality conditions obtained from optimizing macroeconomic frameworks. In this paper, we consider a wealth-based sustainability index of government debt policy derived from a baseline endogenous growth model. We calculate the index from 1999 onward for countries in which the after-growth real interest rate is positive, consistently with the theoretical setup. Results are radically different from common wisdom. We show that the fiscal position is sustainable for both Germany and Italy, and strongly unsustainable for both Japan and France. Policy implications of our findings are discussed.