ALL of your 2020 W-2's must be on the same tax return Do not file and then expect that you can add another one later.
Every 2020 W-2 that you received must be reported on your 2020 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.
ALL of your W-2’s must be entered on the SAME tax return.
Go to Federal>Wages & Income to enter a W-2.
After you enter the first one, you click Add Another W-2.
W-2's come from your employer, and they have until February 1 to issue it. Some employers allow you to import the W-2 through the software, but for security reasons you still need information from the actual W-2 to import it. You might need to phone, drop in, email and/or snail mail an old employer to make sure they know where to send your W-2.
https://ttlc.intuit.com/questions/2561916-how-can-i-get-a-copy-of-my-w-2
https://ttlc.intuit.com/questions/1934390-how-do-i-import-my-W-2
https://ttlc.intuit.com/questions/2588751-why-can-t-i-import-my-w-2
https://ttlc.intuit.com/questions/2938482-how-do-i-take-a-picture-of-my-w-2-in-turbotax-online
https://www.irs.gov/taxtopics/tc154
And….SAVE YOUR OWN W-2! TURBOTAX DOES NOT SAVE IT FOR YOU. TurboTax will not have a copy of it in your account and will not have an image even if you snapped a photo. It is up to you to save it for your own records as stated on the back of the W-2.
There is no reason to rush and file a 2020 return. The IRS will not be accepting 2020 returns until February 12.
Have you filed your 2020 return yet? You should not file until you get all your W2s for 2020. They have until Jan 31 to send them to you. And there is no hurry to file. The IRS won't open filing and accepting returns until Feb 12 this year. So there's plenty of time. Just wait.
If you did file without all your income you have a problem. So wait and see if the IRS accepts or rejects your return on Feb 12 or later. You may have to amend your return.