Probably nowhere right now....as most haven't been issued yet
Employers have until the end of January to send out W-2 forms (and if mailed, you might not get a W-2 until the first week in Feb) , and SS Statements haven't been issued yet (not that I've heard at any rate)....those should come out sometime this month too....but there's a couple more weeks for those to get out as it takes a couple weeks to issue millions of forms.
You might be able to import a W-2 into the software sometime later this month.....but that only happens IF...if....If the employer is working with a W-2 provider that also provides the specially-formatted files and partners with TTX to provide those special files. But most of those are not available yet either.
SO wait for the forms.....the IRS won't even start processing anything until the end of the month......there's lots of time for you to get everything right before filing.
Slow down---the IRS will not begin to accept 2020 returns until the end of January at the earliest. You have time to wait for your documents.
I have already lost count of the users I have seen here who rushed to e-file and then realized they left something out---just in the past several days.
Please be careful about being in too much of a hurry to file your next tax return. Many tax forms are not available at the very beginning of the tax season, so you have to wait for your forms. The software still needs updates at the beginning of the tax season.
The IRS will not begin to accept the e-files until almost the end of January. So even if you e-file before that, your return just sits on the server. If you realize that you made a mistake or left something out—as many people do—you cannot change it.
Every year we see people who are in such a rush to file that they file incorrectly and incompletely. If you file too early and leave out a W-2 or a 1099, or forget to enter information, you will end up having to amend your tax return---and that takes months. Employers have until February1. 2021 to issue W-2's----and ALL of your 2020 W-2's have to be on the same tax return. Many of the 1099's and 1098's you need do not arrive until late January or sometime in February. If you are getting Earned Income Credit or Additional Child Tax Credit, the IRS is going to hold your refund until the end of February no matter how early you file. There seems to be a greater chance of "early" returns being reviewed and those refunds are delayed, or early returns are more often subject to identity verification--which will also delay processing. Filing too early may just be a recipe for a delayed refund. It might go more smoothly for you if you wait until at least mid-February to file instead of e-filing during the first minute that you can do it.
We know that the IRS is already revising the 2020 Form 1040 because of the 2nd stimulus changes to the tax law. That means all tax preparation software programs will also have to be re-programmed and updated. Those changes could take until sometime in late January or even longer—we do not know yet. Do NOT be in a hurry to file your 2020 tax return until more is known. It is never a good idea to file too early; filing your 2020 return too soon may result in a lot of extra confusion that can be avoided if you wait and file a little later.