A special tax designed primarily to prevent the wealthy from using so many legal tax breaks that their regular tax bill is reduced to little or nothing. In recent years, it has hit more and more taxpayers who live in high-tax states, have many children or exercise incentive stock options and will increasingly hit taxpayers who do not consider themselves rich. The AMT ignores certain tax benefits allowed by the regular rules and applies special rates—26 percent and 28 percent—to a larger amount of income than is hit by the regular tax.