I posted a new topic regarding line 25a of the 1040 because I was seeing a rounding error similar to the ones described here. Line 25a is the total W-2 income tax withheld. On my return I entered two values for W-2 federal income tax withheld: $23.17 and $56.46 which adds up to $79.63 and should be rounded to $80. However, the form generated by TT fills in a value of $79.
So, just jumping in to say that this seems to be a problem in other parts of the software where TT is rounding before adding, instead of adding the values first, and then rounding the value that is entered on the form.
I'm seeing a rounding error in line 25a of the 1040 generated by TurboTax
