In addition to Finland, European Union member states comprise Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxemburg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom..
The provisions on free mobility of EU citizens are also applied to the nationals of Iceland, Liechtenstein, Norway and Switzerland. The citizens of these states are thus comparable to EU citizens.
An EU citizen may reside in Finland for a maximum of three months without registering his or her right of residence if he or she has a valid identity card or a passport and he or she is not considered to pose a risk to public order and security.
If an EU citizen resides in Finland for more than three months, he or she must register his or her stay with the police department of his or her place of residence within three months of entering the country.
In the event that an EU citizen resides in Finland for over three months, his or her family member who is a non-EU citizen may apply for a residence card for an EU citizen's family member. The residence card must be applied for within three months of entering the country.
The family members of an EU citizen include his or her spouse, direct descendants who are under 21 years of age, or his or her dependants, and similar descendants of his or her spouse; dependant family members who are direct ascendants, and similar relations of his or her spouse. Persons continuously living in a joint household in circumstances resembling marriage are comparable to spouses regardless of their gender, if the partners have been cohabiting for a minimum of two years or if they have a child in their joint custody.
Other family members are comparable to family members of an EU citizen regardless of their nationality if, in their country of origin, they are dependants of the EU citizen who is the holder of the primary right of residence, or live in the same household with him or her, or if it is vital for serious health reasons that the said EU citizen personally cares for them.
Citizens of the Nordic countries do not need a visa or a residence permit to live or work in Finland. No passport or other identity document is required of Nordic citizens. However, they must be able to prove their identity and their Nordic citizenship if necessary. A driving licence is not a proof of identity, nor does it show the nationality of the holder. Nordic citizens are registered by the Local Registry Offices. Nordic citizens must register their stay if residing in Finland for more than six months.