Does Myki Money always give me the best fare?

Provided everything works correctly, it does give you the best daily fare, by charging you the cheapest possible fare for each trip, and upgrading it automatically, for instance from a 2-hour Zone 1, to a Daily Zone 1+2 — whatever is cheapest for your day’s travel.

But if you use it every day, the system does not automatically upgrade you to a cheaper 7-day Pass or a 30-day Pass etc. Myki Pass must be pre-loaded to attract the cheaper periodical fare.