That may be true but corporations don't really care about the % of GDP. I am sure there is an optimum, but certainly 38% average tax rate is way too high. In principle, I agree with Dew and see this as double taxation. From practical point of view, the rate should be low enough so we don't provide dis-incentives for corporations to move their mfg jobs overseas. If you ever travelled through Singapore, you will know what i mean.