Apple no longer supports computers running Catalina 10.15. This means that any data on your computer, including your tax data, may have increased exposure to security risks. For tax year 2022, TurboTax CD/Download requires macOS BigSur 11 or higher to install.
Older versions of TurboTax CD/Download (tax years 2019, 2020, and 2021) are compatible with Catalina 10.15 and higher.
If you use TurboTax Online, there’s no impact to you as long as you meet the minimum system requirements.