I exercised ISO shares in 2011. I had to pay AMT in 2011. Completed AMT form 6251 in 2011 and line 16 shows difference between regular tax and AMT tax...say $100,000. I sold shares in 2018. How do I recognize the AMT credit and my understanding that I can apply against my regular tax for 2018. I don't have AMT tax in 2018.
