I know beta operating systems are not officially supported.
Has anyone tested to see if the current Quicken for Mac runs in macOS v. 26 Tahoe?
I have been testing the Developer releases since Beta 1, and Quicken has run fine in every release, including Beta 5, which at this time is the most recent. I should mention that my test machine is a Mac Studio with an M1 Ultra. I cannot say how things are running on other processors.