Let me share the system requirements for QuickBooks for Mac 2020, Jfreedy.
For now, the 2020 version supports at least macOS 10.14 (Mohave). We're unable to provide any specific details regarding QuickBooks for Mac 2019 and macOS 12 Monterey compatibility.
You may want to visit our website for the newest features: What's new in QuickBooks Desktop for Mac.
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