I don't want to file my W2's together... Can I file separately or add it to this year W2?

[xmasbaby0 · Accepted solution]

No you cannot do that.  ALL of your  2016 W-2's must be entered on the SAME tax return.

Every W-2 that you received must be reported on your tax return, even if they are for small amounts.  Remember that each one of those W-2’s has your Social Security number on it, and that income was reported to the IRS by the employer.  You do not want to get in trouble with the IRS for under-reporting your income.