Is Bank Capital Sensitive to a Tax Allowance on Marginal Equity?

Abstract

This paper studies how bank capital changes following the implementation and removal of a tax incentive on equity. We examine the impact of the introduction of a tax allowance in Italy granted to banks (and other firms) that increase their equity from a base year. Using a difference-in-differences setting, we observe an 8.83% increase in bank capital ratios following the implementation of this reform. When this tax mechanism is phased out, we observe an opposite effect on the equity ratio, showing the absence of a hysteresis effect in bank capital. We document a heterogeneous effect for large and small banks.