- Marriage
- Examination of impediments to marriage
- Marriage ceremony
- Prenuptial agreement
- Notification of a marriage concluded abroad
- Divorce granted abroad
- Registration of the act applicable to the matrimonial property regime
- Registration of a deed of division of property
- Dissolution of cohabitation
- Removal of marital rights to property
- Extracts issued of the register on the right to officiate at weddings
- Having or adopting a child
- Names
- Moving
- Elections and Right to vote
- Suomi.fi Web Service
- Citizen Certificate and electronic identity
- Guardianship
- Continuing power of attorney
- Appointment of a guardian
- Duties of the guardian
- Guardianship for a minor
- Who can act as a guardian?
- Actions that require the permission of the guardianship authority
- Permit to buy or sell a dwelling
- Permit for purchase or sale of real estate
- Permit for the partition or separation of property and the division of inheritance
- Renunciation of inheritance, for the surrender of one’s share of an inheritance or an agreement on the joint administration of an estate
- Engaging in trade or the establishment of a company
- Property management plan
- Pledging of property and for borrowing and lending
- Leasing or investing a client’s property
- Limited account or the management of the earnings
- Appointing a substitute guardian
- Termination of guardianship
- Giving up the guardian’s task
- Guardianship authority's means of supervision
- Looking after the interests of an absent person or the future owner of the property
- Restrictions to competency and declaration of incompetence
- Extracts from the Register of Guardianship Affairs
- Certificates from the Population Information System
- Population information in the Population Information System
- Registration of a gift notification
- Services of notary public
- Certification of purchase
- Citizens’ initiative
- Death and estate inventory
- Living abroad
- Moving
- Registration of citizenship
- Divorce granted abroad
- Death abroad
- Registration of a child born abroad
- Registration of a name change performed abroad
- Notification of a marriage concluded abroad
- Registration of the act applicable to the matrimonial property regime
- Legalisation of foreign documents
- Notification of retaining Finnish citizenship
- Moving to Finland
- Public Service Info
- Address service
- Forms
You can have several citizenships recorded in the Population Information System. The Digital and Population Data Services Agency will record your citizenship in the Population Information System based on a valid passport, the original decision on naturalisation or some other reliable evidence.
If you are a Finnish citizen, you have the obligation to notify the Finnish Population Information System of the foreign citizenship you have received.
Losing Finnish citizenship
If you are a citizen of both Finland and another state, you may automatically lose your Finnish citizenship when you turn 22. If you have a sufficient connection with Finland, you will not lose your Finnish citizenship. You have a sufficient connection with Finland, for example, if you have between the ages of 18 and 22 informed the Digital and Population Data Services Agency or a Finnish diplomatic mission of your wish to retain your Finnish citizenship or you have applied for a Finnish passport or identity card, which has been granted to you. If you suspect that you may have lost your Finnish citizenship, contact a Finnish diplomatic mission or the Digital and Population Data Services Agency.
Do the following
- Deliver the original decision or certificate of your citizenship to the Digital and Population Data Services Agency or present a valid passport.
- If you are a Finnish citizen, you can also deliver an account of the situation to the nearest Finnish diplomatic mission.
- See also the separate instructions concerning the possible requirements to legalise the decision or certificate.
- If you are applying for Finnish citizenship, contact the Finnish Immigration Service.
Frequently asked questions
Scanned copies of documents alone are not sufficient. You must also submit the original documents for the Digital and Population Data Services Agency to see.
See also separate instructions for the legalisation and translation of a document.
Contact us
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Telephone service
Telephone service from Monday to Friday 9-12
Telephone number +358 295 536 320
Service locations
- Individuals
- Marriage
- Examination of impediments to marriage
- Marriage ceremony
- Prenuptial agreement
- Notification of a marriage concluded abroad
- Divorce granted abroad
- Registration of the act applicable to the matrimonial property regime
- Registration of a deed of division of property
- Dissolution of cohabitation
- Removal of marital rights to property
- Extracts issued of the register on the right to officiate at weddings
- Having or adopting a child
- Names
- Moving
- Elections and Right to vote
- Suomi.fi Web Service
- Citizen Certificate and electronic identity
- Guardianship
- Continuing power of attorney
- Appointment of a guardian
- Duties of the guardian
- Guardianship for a minor
- Who can act as a guardian?
- Actions that require the permission of the guardianship authority
- Appointing a substitute guardian
- Termination of guardianship
- Giving up the guardian’s task
- Guardianship authority's means of supervision
- Looking after the interests of an absent person or the future owner of the property
- Restrictions to competency and declaration of incompetence
- Extracts from the Register of Guardianship Affairs
- Certificates from the Population Information System
- Population information in the Population Information System
- Registration of a gift notification
- Services of notary public
- Certification of purchase
- Citizens’ initiative
- Death and estate inventory
- Living abroad
- Moving
- Registration of citizenship
- Divorce granted abroad
- Death abroad
- Registration of a child born abroad
- Registration of a name change performed abroad
- Notification of a marriage concluded abroad
- Registration of the act applicable to the matrimonial property regime
- Legalisation of foreign documents
- Notification of retaining Finnish citizenship
- Moving to Finland
- Public Service Info
- Address service
- Forms
- Marriage
- Organisations
- Certificates
- Updating customer registers
- Sampling and analysis services
- Search services of the Population Information System
- Local Register Office Register search services
- Extracts from registers
- Maintaining the Population Information System
- Suomi.fi services
- Services to promote digitalisation
- Digital security services
- Services of notary public
- Certification of purchase
- Right to officiate weddings
- E-services
- About the agency