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Friday, May 23, 2008

20080520 Wall Street Journal: Hauser’s Law You can’t soak the rich by David Ranson


Wall Street Journal: Hauser’s Law You can’t soak the rich by David Ranson

Hat Tip: R2

You Can't Soak the Rich

By DAVID RANSON May 20, 2008; Page A23

Kurt Hauser is a San Francisco investment economist who, 15 years ago, published fresh and eye-opening data about the federal tax system. His findings imply that there are draconian constraints on the ability of tax-rate increases to generate fresh revenues. I think his discovery deserves to be called Hauser's Law, because it is as central to the economics of taxation as Boyle's Law is to the physics of gases. Yet economists and policy makers are barely aware of it.

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 interactions among the myriad participants in a tax system are as impossible to unravel as are those of the molecules in a gas, and the effects of tax policies are speculative and highly contentious. Will increasing tax rates on the rich increase revenues, as Barack Obama hopes, or hold back the economy, as John McCain fears? Or both?

Mr. Hauser uncovered the means to answer these questions definitively. On this page in 1993, he stated that "No matter what the tax rates have been, in postwar America tax revenues have remained at about 19.5% of GDP." What a pity that his discovery has not been more widely disseminated.

The chart nearby, updating the evidence to 2007, confirms Hauser's Law. The federal tax "yield" (revenues divided by GDP) has remained close to 19.5%, even as the top tax bracket was brought down from 91% to the present 35%. This is what scientists call an "independence theorem," and it cuts the Gordian Knot of tax policy debate.

The data show that the tax yield has been independent of marginal tax rates over this period, 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.

Read the entire piece here: You Can't Soak the Rich

Mr. Ranson is head of research at H.C. Wainwright & Co. Economics Inc.

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URL for this article:
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Hyperlinks in this Article:
(1) http://online.wsj.com/opinion
(2) http://forums.wsj.com/viewtopic.php? t=2605

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