Do you have bank or credit card records showing that you paid estimated tax due by July 15, 2020?
Your extension gave you extra time to prepare your 2019 tax return documents. It did not give you extra time to pay. If you did not pay your estimated 2019 tax due by JULY 15, 2020 then when the IRS receives your 2019 return and your payment, they will calculate your penalty/interest and bill you later. TurboTax will not calculate the penalty or interest.
https://ttlc.intuit.com/community/printing/help/how-do-i-print-my-4868-extension-form-after-e-filing...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
