TurboTax Desktop does work on Mac OS Big Sur, however, because everyone's computer is different, it may not work without performing some additional troubleshooting steps.
Please use the troubleshooting steps found in these TurboTax FAQs:
Troubleshoot TurboTax for Mac download issues
TurboTax for Mac installation troubleshooter
TurboTax for Mac won't open when installed
Remove and reinstall TurboTax for Mac
Another solution is to create a new user on your MAC and use the TurboTax Desktop Software under the new user account.
If all else fails, Please contact us by phone, using this TurboTax FAQ, What is the TurboTax phone number?
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