Updated : 22/09/2017
You must register your residence within 3 months of arrival.
To register your residence you should go to:
Inactive citizens (pensioners, self-sufficient persons) must present the following documents as proof of sufficient resources:
You must carry your registration certificate at all times. If you don't, you could incur fines.
If you don't register your residence, you could incur fines of between 50 and 300 BGN.