The Angry Bear’s take on the impact of tax cuts on economic growth:

Tax cuts may help when tax rates are too high. And they may help in the year immediately following the tax cut, but seem to be unmaintanable. (Presumably we can’t cut tax rates every year to eternity.) One other thing… as tax rates have drifted lower, we’re also seeing more stability, but slower "fast" years. I suspect that’s more due to the Fed (I’ve had plenty of posts on the real MS growth and real GDP per capita) than tax rates though. [Click on charts to enlarge]