If I E-File, do I have to send in a copy of my W-2 with my payment

[MargaretL]

No, you don't have to send W-2 copies or any tax forms once the return is submitted electronically. All you have to mail is your check and 1040V, which is voucher showing the amount you are paying. That's how the IRS knows that you paying for the return that was sent electronically.