Please explain more. The senior form is the 1040 SR personal return. You can prepare personal returns on your Mac. The separate Business program for LLC, Partnerships and Corps is only available for Windows. Do you need to prepare a separate Business return like a 1120 or 1065 or 1041 Estate/Trust? Or just file a schedule C in your personal return?
You can enter a K-1 you get into any personal Desktop program. And you can't transfer from a 2021 Business return into the personal returns or personal into Business.
