If you are mailing in your return you should mail in all the documents that has Schedule on it.  Such as Schedule A (if you itemize), Schedule C (if you had a business), Schedule E (if you had real estate rental) etc.   Not knowing what you did on your taxes, remember, always include any document or schedule that produced numbers on your 1040 form, along with your W-2, 1099 MISC and any other pay document you received to complete your taxes.  For more information please see TurboTax FAQ below.

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