High marginal tax rates discourage work effort, saving, and investment, and promote tax avoidance and tax evasion. A reduction in high marginal tax rates would boost long term economic growth, and reduce the attractiveness of tax shelters and other forms of tax avoidance. The economic benefits of ERTA were summarized by President Clinton's Council of Economic Advisers in 1994: "It is undeniable that the sharp reduction in taxes in the early 1980s was a strong impetus to economic growth." Unfortunately, the Council could not bring itself to acknowledge the counterproductive effects high marginal tax rates can have upon taxpayer behavior and tax avoidance activities.
Since 1984 the JEC has provided factual information about the impact of the tax cuts of the 1980s. For example, for many years the JEC has published IRS data on federal tax payments of the top 1 percent, top 5 percent, top 10 percent, and other taxpayers. These data show that after the high marginal tax rates of 1981 were cut, tax payments and the share of the tax burden borne by the top 1 percent climbed sharply. For example, in 1981 the top 1 percent paid 17.6 percent of all personal income taxes, but by 1988 their share had jumped to 27.5 percent, a 10 percentage point increase. The graph below illustrates changes in the tax burden during this period.
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