“I received vigorous criticism from conservatives after advocating a VAT in an essay in The Wall Street Journal last month. The main objection — reminiscent of the complaints about income-tax withholding, which was introduced in the United States in 1943 — is that a VAT would be a money machine, allowing the government to readily grow larger. For example, the availability of easy VAT revenue in Western Europe, where rates reach as high as 25 percent, has supported the vast increase in the welfare state there since World War II. I share these concerns and, therefore, favor a VAT only if it is part of a package that includes other sensible reforms. But given the likely path of government spending on health care and Social Security, I see no reasonable alternative.
Abolishing the corporate income tax is similarly controversial. Any tax on capital income distorts decisions on saving and investment. Moreover, the inefficiency is magnified here because of double taxation: the income is taxed when corporations make profits and again when owners receive dividends or capital gains. If we want to tax capital income, a preferred method treats corporate profits as accruing to owners when profits arise and then taxes this income only once — whether it is paid out as dividends or retained by companies.
Liberals love the idea of a levy on evil corporations, but taxes on corporate profits in fact make up only a small part of federal revenue, compared to the two main sources: the individual income tax and payroll taxes for Social Security and Medicare.
In 2009-10, taxes on corporate profits averaged 1.4 percent of G.D.P. and 8.6 percent of total federal receipts. Even from 2000 to 2008, when corporations were more profitable, these taxes averaged only 1.9 percent of G.D.P. and 10.3 percent of federal receipts. If we could get past the political fallout, we could get more revenue and improve economic efficiency by abolishing the corporate income tax and relying instead on a VAT.”