Been thinking about my mortgage interest deduction more and the AMT is still in the new tax plan so if you still have to pay the AMT even with the higher exemptions, then mortgage interest is still useful for AMT calculations. So I shouldn’t do anything because I could still be paying AMT.
If I do pay AMT next year, then I truly did get a tax cut since the AMT exemptions and phaseout was increased. And all this arguing about SALT for California was meaningless.