The American Taxpayer Relief Act of 2012 (ATRA) implemented permanent AMT relief. ATRA increased the AMT exemption; indexed the exemption, tax bracket threshold, and exemption phase-out threshold for inflation; and allowed taxpayers to claim certain personal credits regardless of tentative AMT. As a result, TPC projects that the AMT will only affect about 4 percent of taxpayers each year. Prior to the passage of ATRA, the percentage of taxpayers affected by the AMT remained low each year only because Congress enacted temporary "patches" that increased the AMT exemption.

The following tables show historical and projected numbers of affected taxpayers, estimates of AMT revenue, and descriptive statistics by characteristics of affected taxpayers (such as income, filing status, number of children, and state tax levels).

View previous AMT Tables