Government guarantees generate an implicit subsidy for banks. A capital requirement reduces this subsidy, through a simple liability composition effect. However, the guarantees also make a bank undervalue loans that generates surplus in states of the world in which it defaults. Raising the capital requirement makes the bank safer, which alleviates this problem. We refer to this mechanism, which we argue is empirically relevant, as the forced safety effect .

The homes of firm owners are an important source of finance for ongoing businesses. We use UK microdata to show that a £1 increase in the value of the homes of a firm’s directors increases the firm’s investment by £0.03. This effect is concentrated among firms whose directors’ homes are valuable relative to the firm’s assets, that are financially constrained, and that have directors who are personally highly levered. An aggregation exercise shows that directors’ homes are as important as corporate property for collateral driven fluctuations in aggregate investment demand.