Do you want to install it on the Mac? You can transfer last year's return into the Windows program.
You need to copy the tax file ending in .tax2020 from the Mac to Windows. How to find the tax file,
https://ttlc.intuit.com/community/tax-data-file/help/find-your-tax-data-file-in-mac/00/26206
How did you install it on Windows? Did you use the CD or by downloading from online? If you used the CD you might be able to use the CD for Mac.
You can get an inexpensive external drive or maybe borrow one. People are having luck installing the same CD on both Windows and Mac. It doesn't work to install on the same OS but works to install on a different OS. And the new thing is if you first install from the CD you can't use the download (except for calling in).
If you can't install from the CD to Mac you will need to call in and get the Mac Download put in your account and a new License Code. But a lot of the phone support won't do that. You have to try to get someone who knows they can give it to you.
