I paid the balance due calculated by Turbotax on my 2018 federal tax return before 4/15/19. I just received an amount due notice from the IRS stating that I under paid and owe penalties and interest on that amount.
One thing I noticed - how is Schedule 5 Line 66 calculated? The number on that line is more than the estimated taxes that I sent to the IRS for 2018. The difference between the number on Line 66 and the amount of estimated taxes I sent to the IRS equals the amount that the IRS states I underpaid.
I used Turbotax 2018 Home & Business for Mac.
Thank you,
Lori B
