It depends. If you choose it to be, then yes, it can be. The information from your last years return will be carried over to this years return. BUT, YOU MUST select that you want to pay out of that account in order to pay with that account. At the end of the return, you will be given payment options. Here you will check the account number and select to pay and the payment date.
This information is then transferred to the IRS with your return. They are the ones that will pull the money from your account. TurboTax does not do anything with the information other than transmit it to the IRS.
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