@RobertB4444 Makes sense! Date differential.
I did look at my TT forms. And TurboTax did calculate the $250 penalty by using form 2210, but form 2210 was not included in the efile. It calculated the interest due from quarterly underpayments. The estimated payments that should have been paid were far higher than the $250. Interest rates were 7% and 8%.
Seems I was asked when I expected to pay the amount due. Perhaps that date could have been used when calculating the penalty. However, I don't know that I would have filed on the date I specified anyway.
Gotta try not to let under estimated payments happen again. 🙂
