The Laffer Curve can be seen on the econ sample on this site. The idea was if you had "0" taxes or "100%" taxes, the government would collect no taxes. Tax people 10%, 15%, 20% and the higher the tax, the more the government collects. But - because they were 70% in 1980, it could well be a disincentive to keep working if you got to keep only 30 cents of each dollar earned. President Reagan said that when he made movies in the 50s and the marginal tax rate was 90% of any dollar earned over $200,000, they would quit until the next year. If taxes had been lowered, then they may have made more movies and the government may hav colected more in taxes.
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