Hello, ChriSeattle.

Yes, QuickBooks Desktop 2019 R13 for Mac is compatible with Monterey. You can check this article to learn more about the latest update: Release notes for QuickBooks Desktop for Mac 2019.

I'm adding a link to help you in the future. Tap here to access our self-help articles. These resources contain topics that will guide you on how to perform any tasks in QuickBooks Desktop for Mac.

Please let me know if you have further questions about running QBDT 2019. I'm always happy to lend a hand. Have a great day.