The chart Andrew Stiles referred to Friday (from an earlier post by Veronique de Rugy) shows only the start of how counterproductive it is to increase taxes on the wealthy. As a result of lower tax rates on the top income earners, not only do they pay a much larger share of all taxes, but they pay much more taxes total — and revenue to the government has increased. This is because lowering taxes on the rich creates more rich people and richer rich people. The federal government gets much more revenue if you impose a 40 percent tax on a large number of very wealthy millionaires than if you impose a 70 percent tax on a small number of less wealthy millionaires.
Every tax has a “revenue-maximizing” point well short of 100 percent. If a tax is set higher than its “revenue-maximizing” point, overall tax revenue to the government will decrease. This is the basic theory behind the Laffer Curve, which states that when taxes are zero percent, revenue to the government is (obviously) zero, but when taxes are 100 percent, revenue to the government is also zero, because by taxing all the income of a particular group of people, you kill all economic activity in that group, so you’re left with nothing to tax. Between those two extremes is a curve whereby revenue to the government rises as you increase taxes from zero percent, but begins to fall as you approach 100 percent taxation — that’s the Laffer Curve.
Arthur Laffer and Ford Scudder explore this phenomenon at length in their brilliant series The Onslaught from the Left. In keeping with what Veronique pointed out, they write, in Part II of the series:
In the year Ronald Reagan took office (1981) the top 1% of income earners as reflected by the Adjusted Gross Income of all tax filers paid 17.58 % of all federal income taxes. Twenty-five years later, in 2005 the top 1% paid 39.8% of all income taxes, representing a greater than doubling of the share of tax payments made by this group.
But even more to the point, from 1981 to 2005 the income taxes paid by the top 1% rose from 1.59% of GDP to 2.96% of GDP. In addition to the huge rise in the percent of GDP paid in income taxes by the top 1% of income earners and the more than doubling of the share of taxes paid by this group was the huge absolute increase in real taxes (2005 dollars using the GDP price deflator [in other words, adjusting for inflation – ML]) from 1981 through 2005. In 1981 total tax payments from from the richest 1% were $98.84 billion, while in 2005 the top 1% paid $368.13 billion in taxes; that’s a 288% increase in 25 years. In rough numbers, that means that each of the richest 1% of filers in 1981 paid a little over $100,000 in 2005 dollars, while in 2005 each filer on average paid over $288,000. And remember that’s inflation-adjusted dollars.”
This astonishing statistic is explained by a simple fact. As a result of reducing taxes on the rich, the rich got much richer — so much so that they wound up paying nearly four times as much total tax (and nearly three times as much tax per rich person) as when taxes were higher.