If you are wanting to efile both federal and state, you will need to pay the filing feel (federal efile is free with Turbo Tax, but there is a fee to file your state return). If you want to pay with a credit card (rather than the more expensive option of having the filing fee deducted from your federal refund, assuming there is one), you will be routed to a payment screen to enter your credit card information. Hope this helps.
