The 1040-C is a standalone form that is not a regular tax return. Turbo Tax does not prepare or file 1040 C. The tax that you pay on the 1040-C can be used as a credit on your annual tax returns that you will file for 2024. Here is a pdf copy of the 1040-C you can download and complete.
According to the instructions for filing 1040-C, you will bring this to the IRS office along with any other documentation outlined in the instructions so this isn't efiled beforehand.
Please read the instruction link I provided thoroughly before your IRS appointment to make sure you are well- prepared and have all the documentation in hand.
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