Should I wait until I have all my W2’s to do my taxes?

[Bsch4477]

Yes. Those who don’t often end up having to amend. The IRS will not process returns until February 12 in any event. 

[DoninGA]

Absolutely Yes.  You need to enter all income received from all sources on only ONE tax return.  If you have multiple W-2's you will be asked if you have another W-2 after the first W-2 has been completed for entry.