Originally Posted by iaflyer

I haven't finished my 2018 taxes yet, but I ran my 2017 numbers through 2018 edition of Turbotax - the 2017 taxes using the 2018 tax laws resulted in paying 15% less federal tax. I'm a widebody FO, so that 15% is a decent amount, nothing to sneeze at.

As SailingFun said, the elimination of the AMT is what made the most difference I suspect. Yeah, my State and Local Taxes (SALT) deduction were capped at $10,000 but I wasn't too far above that anyway.