The reputable and non-partisan Tax Policy Center has done a preliminary evaluation of the Obama and McCain tax plans. Some highlights:
1. Both cut revenue significantly. “Although both candidates have at times stressed fiscal responsibility, their specific non-health tax proposals would reduce tax revenues by $3.7 trillion (McCain) and $2.7 trillion (Obama) over the next 10 years, or approximately 10 and 7 percent of the revenues scheduled for collection under current law, respectively.”
2. The benefits would go to different people. “The two candidates’ plans would have sharply different distributional effects. Senator McCain’s tax cuts would primarily benefit those with very high incomes, almost all of whom would receive large tax cuts that would, on average, raise their after-tax incomes by more than twice the average for all households. . . . In marked contrast, Senator Obama offers much larger tax breaks to low- and middle-income taxpayers and would increase taxes on high-income taxpayers. The largest tax cuts, as a share of income, would go to those at the bottom of the income distribution, while taxpayers with the highest income would see their taxes rise.”
3. Both have ways to increase revenue. “Finally, each candidate promises to broaden the tax base and reduce corporate loopholes. McCain lists eight breaks for oil companies as targets but, other than that, is short on details for his pledge to eliminate ‘corporate welfare.’ Obama identifies a variety of steps, including basis reporting for capital gains, taxing carried interest as ordinary income, and enacting sanctions on international tax havens that don’t cooperate with enforcement efforts, but he would also need additional as-yet-unspecified policies to achieve his revenue target for base broadening.”