I extended Fed & MD filing deadline outside of Turbotax and paid estimated amt then. How may Turbotax recognize estimated pmt, thereby eliminating underpayment penalty?

[VolvoGirl · Accepted solution]

You need to enter it.  To enter the amount you paid with an extension (including state extension)  go to
Federal Taxes (or Personal for desktop H&B version)
Deductions and Credits
Then scroll way down to Estimates and Other Taxes Paid
Other Income Taxes - Click the Start or Update button

Next page second section Payments with Extension
Either Visit All or Click Start or Update by the extension you paid

[cebspower]

Many thanks. It appears to have worked.