- The Washington Times - Tuesday, February 14, 2006

In this year’s budget, President Bush asks for an additional $513,000 for the Treasury Department’s Office of Tax Analysis to create a new division of dynamic analysis. The idea is to improve estimates of the revenue effects of proposed tax changes so they are more accurate.

But many critics charge the goal is obfuscation: making revenue losses from tax cuts appear smaller than they rare.

The debate over dynamic scoring really goes back almost 30 years. Historically, estimates of the revenue effect of tax changes were done by accountants, who simply took the most recent year’s tax data, plugged in the proposed changes and looked at the revenue effect. Then they would try to estimate the effect on future revenues by making some assumptions about growth in the number of taxpayers and the tax base. The estimates were normally done for a single year.

Eventually, economists replaced the accountants and computers replaced adding machines. More sophisticated methods of estimating inflation, economic growth, employment and other factors were incorporated into the estimates.

However, the economists retained one of the accountants’ operating principles: the tax changes were assumed to have no effect on behavior or the economy as a whole. Hence, this method of revenue estimating came to be called static analysis.

One reason is that prior to the 1970s economists didn’t really have the mathematical tools to make a dynamic analysis that incorporated all the effects of tax changes on things like work, saving and investment. And there was no demand for dynamic analysis because the vast bulk of proposed tax changes are too small to have any effect on the economy as a whole.

Another reason is that until the 1970s, most economic thinking was dominated by the theories of economist John Maynard Keynes, who believed fiscal policy affected the economy only by affecting disposable income. Therefore, few economists were interested in studying taxation’s incentive effects.

The great recession of 1973-1975 was a severe blow to Keynesian economics because inflation was high while there was significant unused capacity in unemployed labor and idle factories. Theoretically, this wasn’t supposed to happen.

Also, the failure of traditional Keynesian medicine, especially the tax rebate of 1975, led economists to search for other causes and cures for economic malaise.

One group of economists fingered the capital-gains tax as a key problem area because it had especially pernicious effects on entrepreneurship and risk-taking. Historically, the tax on long-term capital gains had been fixed at 25 percent. But in 1969, congressional liberals raised the rate to 35 percent to soak the rich, who realize most capital gains. The result was that venture capital virtually dried up and it was much more difficult to get financing for new business start-ups.

In 1978, a bipartisan effort was made in Congress to cut the capital-gains rate back to 25 percent. But static scoring showed this to be a big revenue loser because it was assumed the same amount of gains would be realized, though taxed at a lower rate. One need not be a professional economist to see cutting the price of something will probably increase sales of it.

Advocates of cutting the capital-gains rate, including Harvard economist Martin Feldstein, argued it would produce an unlocking effect that would result in many more gains on old investments. This would both raise federal revenue and create a pool of capital that would be reinvested in new businesses and industries, thus spurring growth.

After Congress cut the capital-gains tax in 1978, the Treasury Department studied the effect and concluded the tax cut had indeed raised federal revenue. There was also a huge jump in venture capital financing that many economists credit for starting the high-tech revolution of the last 25 years.

Subsequently, many so-called supply-side economists argued there were other types of tax cuts that might pay for themselves and some that would do so partially, thus reducing the actual revenue loss below those in official estimates.

Few economists today would disagree that an across-the-board tax-rate reduction would have reflows of about 35 percent. That is, static revenue loss estimates are 35 percent too high. (Similarly, revenue gains from tax rate increases would tend to be 35 percent too high.)

This is a long way from saying all tax cuts will pay for themselves, as overly exuberant conservatives sometimes argue. In any case, if a few extra dollars will improve Treasury’s tax analysis, it is all to the good.

Bruce Bartlett is a nationally syndicated columnist. His new book, “Impostor: How George W. Bush Bankrupted America and Betrayed the Reagan Legacy,” will be published by Doubleday on Feb. 28.

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