NBER Publications by Florian Heider

We use a natural experiment in the form of staggered changes in corporate income tax rates across U.S. states and time to show that tax considerations are a first-order determinant of firms’ capital structure choices. Over the period 1990-2011, firms increase leverage by 114 basis points on average (equivalent to $62.1 million in extra debt) when their home state raises tax rates. Contrary to standard trade-off theory, the tax sensitivity of leverage is asymmetric: Firms do not reduce leverage in response to tax cuts. Using treatment reversals, we find this to be true even within-firm: Tax increases that are later reversed nonetheless lead to permanent increases in a firm’s leverage – an unexpected and novel form of hysteresis. Our findings are robust to various confounds due to unobserved...