Proponents of tax cuts often claim that “dynamic scoring” — that is, considering tax cuts’ economic effects when calculating their costs — would substantially lower the estimated cost of tax reductions, or even shrink it to zero. The argument is that tax cuts dramatically boost economic growth, which in turn boosts revenues by enough to offset the revenue loss from the tax cuts.
But when Treasury Department staff simulated the economic effects of extending the President’s tax cuts, they found that, at best, the tax cuts would have modest positive effects on the economy; these economic gains would ra at most 10 percent of the tax cuts’ total cost. Under other assumptions, Treasury found that the tax cuts could slightly decrease long-run economic growth, in which case they would cost modestly more than otherwise expected. (http://www.cbpp.org/7-27-06tax.htm)
Economic modeling already thoroughly discredited by empirical data. Move along...
The claim that tax cuts pay for themselves also is contradicted by the historical record. In 1981, Congress substantially lowered marginal income-tax rates on the well off, while in 1990 and 1993, Congress raised marginal rates on the well off. The economy grew at virtually the same rate in the 1990s as in the 1980s (adjusted for inflation and population growth), but revenues grew about twice as fast in the 1990s, when tax rates were increased, as in the 1980s, when tax rates were cut. Similarly, since the 2001 tax cuts, the economy has grown at about the same pace as during the equivalent period of the 1990s business cycle, but revenues have grown far more slowly. (http://www.cbpp.org/3-8-06tax.htm)
This is simple lying. The 1983 - 1990 boom was the largest peace time economic boom in U.S. history. Both the size of the economy and government revenue nearly doubled. Try to find some sources with some degree of intellectual credibility.
Some argue that, even if most tax cuts do not pay for themselves, capital gains tax cuts do. But, in reality, capital gains tax cuts cost money as well.
Now, we need to stop right here and clarify some first principles, which is really where the rubber meets the road. The idea that tax cuts need to be "paid for" is politicianspeak that contains an implicit assumption that any present state of government spending, regardless of any possible rational or constitutional justification that could be made for it, must be maintained at the current level at all costs.
Tax cuts don't need to be "paid for" for the simply reason that most of what the federal government now occupies itself with is unconstitutional, irrational, immoral, and destructive to the moral, intellectual, and social fabric of the nation.
The fundamental purpose of serious tax cutting is certainly not to increase government revenue, which increases governments size, scope and invasiveness. The primary purpose of cutting taxes is to increase individual freedom and create larger numbers of citizens who are independent of the state.
Taxes, therefore, being "paid for" is simply a cynical and clever way of saying that all government programs must continue to exist irregardless of their constitutional, practical, or moral legitimacy.
Keep this in mind please: government has no money. Ever. Each and every penny of money taken in as tax revenue belongs to those who earned it through honorable, productive work and wealth creation. Each and every penny. Government creates no wealth. All the wealth and funding it has, at any given time, has been confiscated from productive citizens (either that, or it has been created out of thin air, the destructiveness of which is well understood).
Government exists by our good graces and by the consent of the governed, and the present government attitude (represented in the progressive income tax itself), that every penny of earned income belongs, by preemptive right, to the state and to the political class, and that it is they to allow us a portion of the total that rightfully belongs to them, is an attitude of malignant import and intent that, if left to itself, will eventually destroy anything approaching either a free or civil society.
Our Red Kevin Graham, however, having quickly evolved from defending Bush, capitalism, and the war in Iraq only a couple of years ago, has now morphed into an apologist for unlimited government power, a kind of divine right of government ownership of all private wealth, a rehabilitator of revolutionary socialism, Marx, the Soviet Union, and a shill for deeply sinister forces hostile to individual liberty and the rule of law.
But these are, after all, a part of the "bitter fruits of apostasy" transferred and manifested in realms other than the strictly theological.