German phrase
Ab ~ muss ich etwas anmelden?
Meaning
As of ___, do I need to register something?
When to use it
Ask when you must register. It checks when an official duty begins.
Example dialogue
Ab wann muss ich etwas anmelden?
From what point do I have to register something?
Am besten so bald wie möglich, spätestens innerhalb eines Monats.
It is best to do so as soon as possible, and within a month at the latest.