@kkhallsf
Just checking to make sure you know that Turbotax online can only prepare a 2020 return, if you need to prepare a 2019 return, you have to use the desktop version.
I've never heard of problems installing Turbotax 2020 on 10.15, but maybe @macuser_22 has heard of it. I know that the first few versions would not run properly on Big Sur (which was just released in November 2020 at the same time as the initial version of Turbotax 2020), but I'm not aware of problems with Catalina (10.15).
