Get your taxes done using TurboTax

@BrittanyS -- thanks for your reply.  First, I am working on the desktop version of Premier, so I'm not sure the instructions you outline below apply in the same way.  However, I just tried exiting TurboTax and then opening the file again. and I'm seeing the same changes (i.e., Refund due shows less than what I had submitted).  I went to the IRA Contributions Worksheet, and a number of entries had changed versus what I had submitted, including a checkmark under "Check if covered by a retirement plan at work" as well as changed amounts under "Nondeductible traditional IRA contributions from worksheet" (it was erroneously showing my Roth election in this box).  When I run through the Step-by-Step section for Traditional and Roth IRA contributions and input the responses I had previously made in the version I submitted/filed, the IRA Contributions Worksheet and Refund due match what I had submitted.  The values/entries are definitely changing between when I close out the file/exit TurboTax and re-open it.  This is concerning, in my 25+ years of using TurboTax I've not seen this before.