Tuesday, May 20, 2008

WSJ.com - You Can't Soak the Rich

 
Like science, economics advances as verifiable patterns are recognized and codified. But economics is in a far earlier stage of evolution than physics. Unfortunately, it is often poisoned by political wishful thinking, just as medieval science was poisoned by religious doctrine. Taxation is an important example.

The data show that... 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. 

Presidential candidates, instead of disputing how much more tax to impose on whom, would be better advised to come up with plans for increasing GDP while ridding the tax system of its wearying complexity. That would be a formula for success.

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