Well that's kind of the issue here, though.

For almost an entire year (possibly longer), the link to the Tags page was a selectable option we could choose to include on the customizable bookmarks tab on the QBO menu... but they removed as an option in the latest update with no explanation as to why.

Not that it's impossible to find in the current build, but it gives the impression that it was either an accidental oversight by the design team, or that they're intentionally trying to hide the feature for some reason.