Until 2000, less than 1 percent of taxpayers paid the AMT in any year. Under current law, however, the number of taxpayers affected by the AMT will grow from just over 1 million in 2001 to nearly 30 million in 2010 before falling back to about 23 million in 2014 after the expiration of the 2001 and 2003 tax cuts. Twenty percent of all taxpayers–and 40 percent of married couples–will owe AMT in 2010. AMT receipts in 2010 will total about $90 billion, roughly 7 percent of total individual income tax revenue.
The Looming Challenge of the Alternative Minimum Tax, Alan D. Viard, Federal Reserve Bank of Dallas:
While the AMT applied to 200,000 taxpayers in 1990, roughly 4 million will pay it this year, according to the Urban-Brookings Tax Policy Center. But that is only the beginning. Under current law, the AMT rolls will explode to 22 million in 2007. The AMT’s revenue yield follows a similar pattern, having risen from $2 billion in 1990 to $22 billion this year. It’s projected to nearly triple to $65 billion in 2007.