If you have not e-filed, you can pay within the TurboTax software. You would go to the File section prior to e-filing. You would be given several options:

• check or money order (with payment vouchers)
• direct debit (enter routing number and account number for your bank)
• credit or debit card (use link to IRS 3rd party payment processors) You can pay the desired amount on each card. You may have to complete it in different transactions.