This article reports estimates of the long-run costs and benefits of having banks fund more of their assets with loss-absorbing capital, or equity. We model how shifts in funding affect required rates of return and how costs are influenced by the tax system. We draw a clear distinction between costs to individual institutions (private costs) and overall economic (or social) costs. We find that the amount of equity capital that is likely to be desirable for banks to use is very much larger than banks have used in recent years and also higher than targets agreed under the Basel III framework. for helpful comments. Jochen Schanz helped greatly to clarify our thinking about the link between our estimates of optimal capital ratios and Basel III rules. We also thank him for Appendix B.

This paper explores the links between fiscal multipliers and household discount rates. We report evidence of a large and statistically significant relationship between reported rates of time preference across countries and the government expenditure multiplier. This study uses recent cross-country data on reported rates of time preferences gathered by Wang, Rieger and Hens (2011). We find that a higher reported rate of time preference is strongly associated with a larger government expenditure multiplier. Our findings may help to explain some of the differences in view over the optimal path for fiscal consolidation in Europe today, between the Germanic and Northern European countries (whose representatives appear to favour a faster fiscal retrenchment) and those in the South (who would like their required fiscal adjustment to occur less rapidly).(1) Goldman Sachs Asset Management.