Fluctuating bail-in expectations and effects on market discipline, risk-taking and cost of capital

Through the compulsory participation of junior investors in bearing losses of their failing bank, the bailin attempts to limit bail-outs' side-effects in terms of market discipline, too-big-to-fail, bank-sovereign nexus and risk-taking. This paper assesses the consequences of bail-in expectations along these dimensions ensuring - through a bond pricing study - that bail-in expectations are not confounded by other factors. Using hand-collected details of EU bail-in events, I study both positive and negative exogenous shocks to bail-in expectations, offering three sets of findings. First, bail-in events can reinforce (or weaken) bail-in expectations, as shown by Khwaja-Mian tests (validated by placebo analyses). Second, bail-in expectations promote market discipline, and mitigate too-big-to-fail and banksovereign nexus. Third, bail-in effects on bank resilience appear mixed. While it incentivises banks to reduce risk-taking (e.g., increasing risk-weighted equity by a third of Basel III requirement), it also remarkably exacerbates total funding costs through an increase in equity cost (partially off-set by a debt cost reduction).