Notarisation of the authenticity of a signature

You need the services of a notary public when you need the authenticity of your signature officially certified.

Do the following

  • You must visit the Digital and Population Data Services Agency personally and sign the document in the presence of a notary public.
  • Book an appointment with a public notary through the electronic appointment booking service. 
    Appointment services
  • Bring with you the document and your passport or ID card. Please note that a driving licence is not an official identity card. 
  • A note confirming the authenticity of you signature will be recorded on the document and the notary public will sign the document.


  •  The identification must be either your passport or an ID card with a photograph.


  • The notarisation of the authenticity of your signature costs EUR 17 per signature.

Processing time

If the notary public is available, they will notarise the authenticity of your signature while you wait.

Links to laws related to the matter

Act on Notaries Public (in Finnish)

Frequently asked questions

Notary public

Book an appointment

Book an appointment to notary public


Please use secure email if your message contains personal or otherwise confidential information. Please choose [email protected] as the recipient.

Send secure email


Telephone service number is +358 295 536 404

Service hours Mon–Fri 915.

If you need a public purchase witness, you can search for one on the website of the National Land Survey of Finland

Service locations

Addresses of the service locations


Population of Finland 5 635 667