Here yesterday, wrong on both years, and forgetting that G. H. W. Bush raised taxes by adding a 31% bracket in 1991, getting himself defeated by Clinton in 1992:
"What did Ronald Reagan do? When Ronald Reagan took office in 1981 the top marginal tax rate was 90%. And the amount of money raised by the tax code was about $500 billion back then. When Reagan left office in 1989, there were three tax rates, essentially two, but there was a 31% bubble in there. But the top 90%, that marginal rate of 90% had been dropped to 28%. And the amount of money generated by the tax code had doubled, almost a billion dollars, by reducing tax rates."
Revenues in 1981 were $599.3 billion nominal, in 1989 $991.1 billion, up 65%, not 100%. Revenues did not double until 1993-1994, after Bush and then Clinton raised marginal rates as high as 39.6%. Revenues did not double again until 2006. The record shows that whether marginal rates were higher or lower, revenues took twelve to thirteen years to double.
What Rush Limbaugh means by "doubled, almost a billion dollars" is anybody's guess. Only his pharmacist knows for sure.
The facts are that Ronald Reagan persuaded Democrats to bring the top marginal rate down from 70% in 1981 to 50% 1982-1986. After the tax reform of 1986 the top marginal rate dropped to 38.5% in 1987. For three years 1988 through 1990 there were just two marginal rates: 15% and 28%. That was the brief golden age of taxation under Reagan, which his successor totally screwed up.
Reagan had NOTHING to do with the introduction of a 31% bracket. That was all on George Herbert Walker Bush, for which the Democrats recently gave him the Profiles in Courage Award.