How can I confirm that payment will come from bank account when tax is due for 2018?

[nowis1950]

For Federal tax due.

[DoninGA]

Look at your Filing Instructions page.  It will show the method of payment

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.  See screenshot

This will take you back to the 2018 online tax return.

Click on Tax Tools on the left side of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.