TurboTax will turn in your North Carolina D-400 and all other required forms if you choose to e-file your return.
If you print and mail it, TurboTax will print out the D-400 for you to sign and any other forms you need. After signing, you will attach any printed W-2s and 1099s with North Carolina income tax withheld.
For a full list of attachments see What you should send us… on the left column of page 4 in the North Carolina Individual Income Tax Instructions.
E-filing is faster, and more convenient and there is no chance your return will be lost in the mail. If you do mail your return, we suggest sending it my certified mail with return receipt.
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