the biggest joy is that you get it back in the form of a credit over several years, all the while paying interest and fees on the tax bill you cant initially pay because your "gains" are in a private company's stock that you cant sell! I've yet to get a rational explanation of why the current AMT law is fair. sure for some people it makes sense, but for the exercise of ISOs in a private company, it's basically robbery where they give you a chunk of what they stole back every year, and hopefully a liquidity event comes along sooner rather than later