Similar problem ....
Does not apply last year's excess tax applied to this year at all in figuring penalty. IRS says to count it as a 4/15 payment, which would put it in column a.
in addition, I made two estimated payments by check in the period between April 15 and June 15. It did not combine them and include them in the 6/15 payment column b.
I have been able to override the entries, but TT considers it an error on my part. Quite the contrary.
Both errors on TTax mess up the penalty section of this form.
