Originally targeted at high-income households, the individual alternative minimum tax (AMT) is now on the verge of switching from a "class" tax to a "mass" tax. Under current law, the AMT will encroach dramatically on the middle-class over the next decade and will become the de facto tax system for upper-income households. These changes occur because of the non-indexation of the AMT for inflation and the tax cuts enacted in 2001. The trends are troubling because the AMT is notoriously complex, its effects on efficiency and equity are questionable, and its underlying purpose is controversial. This paper provides information on the AMT, its economic effects, and options for policy reform, and is intended to help inform the debate and the eventual reforms that will be required in the near future.

The practice of requiring well-to-do Americans to pay a minimum tax was developed more than three decades ago. In January, 1969, then-Treasury Secretary Joseph W. Barr informed Congress that 155 individual taxpayers with income exceeding $200,000 paid no tax in 1966. The news set off a political firestorm that resulted in the creation of a minimum tax. Under current law, 36 million taxpayers will be subject to the current minimum tax by 2010. This Issues and Options paper examines how tax designed to target 155 taxpayers grew so dramatically, the economics of the AMT, and the options for reform.

The alternative minimum tax was created in 1969 to ensure that high-income taxpayers did not exploit tax laws to reduce or eliminate their federal income tax. By 2010, it is expected to affect 36 million taxpayers, particularly upper-middle-class families with children. This slide show provides an overview and history of the tax; Tax Policy Center projections; an examination of equity, efficiency, and complexity issues; and reform options. The show is based on the discussion paper "The Individual AMT: Problems and Potential Solutions."