The AMT, as you know, affects more and more people every year. This will probably continue for a while longer even though IRS finally inflation-indexed the AMT. As to whether it will affect a particular taxpayer depends not so much on the income, but more on what deductions he has. Some of the items that will trigger the AMT tax, and force add-back or partial add-back adjustments are: medical expenses, Sch. A taxes, mortgage interest, investment interest expense for tax-exempt interest (Form 4952 req), disposition of property gain or loss, depreciation adjustments, passive activities (8582), exercise of incentive stock options, loss limitations, Sch. A Misc. itemized deductions, income from installment sales. There are others as well.