above (continued):
The Kennedy tax cuts
President Hoover dramatically increased tax rates in the 1930s and President Roosevelt compounded the damage by pushing marginal tax rates to more than 90 percent. Recognizing that high tax rates were hindering the economy, President Kennedy proposed across-the-board tax rate reductions that reduced the top tax rate from more than 90 percent down to 70 percent. What happened? Tax revenues climbed from $94 billion in 1961 to $153 billion in 1968, an increase of 62 percent (33 percent after adjusting for inflation).
According to President John F. Kennedy:
Our true choice is not between tax reduction, on the one hand, and the avoidance of large Federal deficits on the other. It is increasingly clear that no matter what party is in power, so long as our national security needs keep rising, an economy hampered by restrictive tax rates will never produce enough revenues to balance our budget just as it will never produce enough jobs or enough profits… In short, it is a paradoxical truth that tax rates are too high today and tax revenues are too low and the soundest way to raise the revenues in the long run is to cut the rates now.
The Reagan tax cuts
Thanks to "bracket creep," the inflation of the 1970s pushed millions of taxpayers into higher tax brackets even though their inflation-adjusted incomes were not rising. To help offset this tax increase and also to improve incentives to work, save, and invest, President Reagan proposed sweeping tax rate reductions during the 1980s. What happened? Total tax revenues climbed by 99.4 percent during the 1980s, and the results are even more impressive when looking at what happened to personal income tax revenues. Once the economy received an unambiguous tax cut in January 1983, income tax revenues climbed dramatically, increasing by more than 54 percent by 1989 (28 percent after adjusting for inflation).
According to then-U.S. Representative Jack Kemp (R-NY), one of the chief architects of the Reagan tax cuts:
At some point, additional taxes so discourage the activity being taxed, such as working or investing, that they yield less revenue rather than more. There are, after all, two rates that yield the same amount of revenue: high tax rates on low production, or low rates on high production.
2) The rich pay more when incentives to hide income are reduced. (cont. below)