IDK about PTO, but Pro Series 1040ES worksheet does not calculate AMT. It might not matter any more, but you have to watch it.

In PS, I always use the Planner, which DOES calculate AMT.

I LOVE TaxTools.  It does so many things, including a quick and thorough tax planner.

I mean PS' Tax planner worksheet.

I have also been looking at CFS Tax Tools as a separate program...glad to hear someone loves it!

I mean, I REALLY LOVE IT! Just look at all the tools it has, including Offer in Compromise forms, Fillable PDF from IRS form download, Lease Inclusion, 1031 worksheets (just minutes to do instead of hours), and and and