Get your taxes done using TurboTax

My preference would be a timely file that I then amend.  To do so, do I tell TT that box 16 is not checked even though that would be inaccurate, or do I check "yes" but leave all the fields blank?

 

Am I required to amend if the amount I get back increases or stays the same?  (Do they want the info reported no matter what, even though they already get sent a copy?)

 

How do I know if there are parts TT isn't doing for me?