Two results characterize previous studies of optimal capital income taxation: (i) In order to avoid distorting capital accumulation incentives the ex ante capital tax rate should be set to zero in the long run and ii) by varying the ex post capital tax rate governments may be able to insulate...

Recent work in I.O. has emphasized the importance of firm- and plant-level heterogeneity in total factor productivity. Jensen and McGuckin (1996) argue that the major empirical regularity in studies of firm or establishment level productivity is heterogeneity within sectors and across plant...