Yep. That's needed for all EIDL programs.
If 2019 is not yet filed, a prepared schedule C won't suffice like with PPP?
Also, how far along in the application do I need to go to trigger an invite? I submitted the app, and they responded with an amount I qualify for, but it's still asking for verification of some more info before it's available to sign. Is all that necessary, or just submitting the application is enough to trigger the invite?