The United States is often said to maintain a classical tax system, under which corporate profits are subject to double taxation, once at the corporate level when they are earned, and again at the individual level when they are paid out as dividends. The Bush administration is reportedly considering corporate tax reform options in part because of concerns about double taxation.
Dividends are not taxed twice if they are paid to nonprofit institutions or foundations; federal, state or local governments; public or private pension funds; and 401(k) plans or Individual Retirement accounts. (Pensions and tax deferred saving plans face double taxation in a mechanical sense, since the funds are taxed when eventually withdrawn. But the effective tax rate at the individual level on the income earned in those plans is typically zero or negative because contributions are deductible and taxes on earnings are deferred.)
Tax Facts (http://www.taxpolicycenter.org/taxfacts/) provides tax information for citizens, policy analysts, legislators, and the press. Data are compiled from a variety of sources, including the Urban Institute, Brookings Institution, Internal Revenue Service, the Joint Committee on Taxation, the Congressional Budget Office, the Department of the Treasury, the Federation of Tax Administrators, and the Organization for Economic Cooperation and Development. Tax Facts is a product of the Urban-Brookings Tax Policy Center. The Center provides independent analyses of current and longer-term tax issues.