Inconvenient Truth:Tax Rate Hikes Lower Revenue
The data show that the tax yield (revenues divided by GDP) has been independent of marginal tax rates from 1950 to 2007 (see chart above), but tax revenue is directly proportional to GDP. So if we want to increase tax revenue, we need to increase GDP.
What happens if we instead raise tax rates? Economists of all persuasions accept that a tax rate hike will reduce GDP, in which case Hauser's Law says it will also lower tax revenue. That's a highly inconvenient truth for redistributive tax policy, and it flies in the face of deeply felt beliefs about social justice. It would surely be unpopular today with those presidential candidates who plan to raise tax rates on the rich – if they knew about it."You Can't Soak the Rich" from today's WSJ