Debt, Taxes, and Banks

Understanding the impact on banks’ capital structures of tax biases toward debt finance is critical to assessing policy responses to socially excessive bank leverage—but there is no empirical evidence of its extent. Guided by some simple theory, this paper explores this impact for a large panel of banks in 82 countries. On average, the tax sensitivity of banks’ leverage proves significant and about as large as for nonfinancial firms. Somewhat counterintuitively, but as the theory suggests, taxation has little impact on the use of hybrids. Banks holding smaller equity buffers and larger banks are noticeably less sensitive to tax.