Another Way to Make Finance Safer

A bank’s debt level largely reflects a trade-off between the benefits of the tax deduction for interest paid and the higher probability of bankruptcy or operational degradation. So taxing banks on their debt, not their equity, would fundamentally improve organizational incentives to rely more on safe equity.

CAMBRIDGE – Since the financial crisis erupted in 2008, policymakers have sought to make the world’s banks safer, mainly via detailed instructions: use more capital, avoid specified risky activities, provide more transparency, and punish reckless behavior. But this approach to financial regulation, while laudable, requires officials to make, or shape, banks’ most important strategic decisions: capital levels, liability structure, and the scope of their business activities. And, while regulators often target bank executives’ incentives, they often leave intact the organization’s incentives to take risks – but then command them, via regulation, not to take those risks.