Paying federal or state taxes owed by mailing a check is one of the options when taxes are owed.
In the File section of the program on Step 2, when taxes are owed, you are given several options on how to pay the taxes owed.
Pay for what? Tax due or the Turbo Tax fees?
You can enter your bank account info for the IRS to pull it out of your bank. Or pick to mail a check and Turbo Tax will print a 1040V voucher to mail in with a check. Or say you will mail a check then pay online at
How to pay a federal tax due
How to pay the Turbo Tax Online fees