Do I owe an underpayment penalty for 2019 if I owe $7800, but my withholding for the year was only $6500 - so below 90% of what I owe. Turbotax says no penalty.

[KatrinaB48]

According to the IRS, you can avoid the underpayment penalty by comparing the tax owed on your 2018 return. If the withholding and estimated tax paid during 2019 is 100% of the tax shown on your 2018 return, then you do not owe an underpayment penalty,