Private retirement savings and mandatory annuitization

The present paper studies the growth, welfare, and efficiency consequences of tax-favored retirement accounts in a general equilibrium overlapping generations model with idiosyncratic lifespan and labor income uncertainty. We focus on the implicit differential taxation of savings motives and the mandatory annuitization of withdrawals after retirement. The simulations performed for the German economy indicate that the differential taxation of savings motives has only modest efficiency effects but especially low-income households benefit. On the other hand, mandatory annuitization improves overall economic efficiency significantly by about 0.4% of aggregate resources, but future generations are hurt due to intergenerational income effects from reduced accidental bequest.