Revisiting Ricardo: The Rise and Fall of Ricardian Equivalence
This episode of Economics Explored explores the theory of Ricardian equivalence, a proposition that fiscal policy measures like tax cuts or stimulus payments may not effectively boost the economy if households anticipate higher future taxes to pay off government debt. Host Gene Tunny explains the concept originating from David Ricardo and popularized by Robert Barro, involving ultra-rational consumer optimization over infinite time horizons. While an elegant theoretical model, Ricardian equivalence relies on unrealistic assumptions and fails empirical tests. Evidence shows households do increase spending after rebates or transfers, although not always by as much as policy makers would like. Ultimately, while the merits of discretionary fiscal policy are debatable, Ricardian equivalence is too extreme a hypothesis. Households do not behave as ultra-rational dynamic optimizing models predict.