Well, you MAY owe AMT; it's not certain, and depends on your specific financial situation. Also if you pay AMT then you are eligible for an AMT tax credit which

Well, you MAY owe AMT; it's not certain, and depends on your specific financial situation. Also if you pay AMT then you are eligible for an AMT tax credit which can offset the taxes you have to pay later on when you sell the shares. I think the bottom line is that ISOs are far better than NQSOs in terms of your own tax liability.