You should definitely wait until you have received all of your W-2's prior to filing your tax return. You can go ahead and enter the W-2 that you do have along with any other required information that you currently have and theTurboTax Online program will automatically save any data entered.
You can then sign out and your progress will be saved and once you have your remaining W-2's you can logon and complete your tax return. To sign out, simply click Sign Out at the bottom left of your screen.
Note: The deadline for providing W-2's to an employee is January 31,2018.
In addition, the IRS will not begin accepting e-filed tax returns until January 29,2018, so you have time.
If you have already filed your tax return meaning you hit Transmit button. You would then need to first wait and see if your tax return is accepted or rejected. If rejected, you can go back and add the W-2's once received and re-submit your tax return.
If accepted, you would need to wait until after you have received your tax refund and Amend your tax return. Current tax year amending Instructions will be available soon.
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