Does the mere presence of big banks affect macroeconomic outcomes? In this paper, we develop a theory of granularity (Gabaix, 2011) for the banking sector, introducing Bertrand competition and heterogeneous banks charging variable markups. Using this framework, we show conditions under which...

Bank distress can have severe negative consequences for the stability of the financial system, the real economy, and for public finances. Regimes for the restructuring and resolution of banks, financed by bank levies and fiscal backstops, seek to reduce these costs. Bank levies attempt to...