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Finland

Finland uses the personal identity code as the taxpayer identifier for individuals and the Business ID as the taxpayer identifier for Finnish companies, corporate entities, and other organisations.

FI FIN 2 TIN types Last reviewed 2026-05-14

TIN types

2 published formats. Open a type to see examples, structure details, and official sources.

Validate Finland TIN
Finnish Personal Identity Code (HETU)
Current Individuals

Digi- ja väestötietovirasto (Digital and Population Data Services Agency, DVV)

Permanent personal identifier used as the Finnish taxpayer identifier for natural persons.

Details
Examples
131052-308T 010190Y002R
Where to find it

On Finnish official identity documents and in DVV or Population Information System records; it is also used by tax, employment, banking, insurance, and other administrative services.

Common names
HETU Personal identity code Finnish Social Security number henkilötunnus personbeteckning
Structure
1-6 Date of birth Date of birth in day, month, and two-digit year order.
7 Century separator Character showing the birth century; this character is part of the identifier.
8-10 Individual number Number distinguishing people with the same date of birth; parity reflects the sex recorded in the Population Information System.
11 Control character Character derived from the date of birth and individual number.
Official source
vero.fi oecd.org dvv.fi
Finnish Business ID (Y-tunnus)
Current Entities

Patentti- ja rekisterihallitus (Finnish Patent and Registration Office, PRH) / Verohallinto (Finnish Tax Administration)

Identifier used as the Finnish taxpayer identifier for companies, corporate entities, and other registered organisations.

Details
Examples
1234567-1 0123456-2
Where to find it

In the Business Information System and on company invoices, business letters, forms, registration documents, and public register extracts.

Common names
Business ID Business Identity Code Y-tunnus FO-nummer
Structure
1-7 Sequence Business or organisation number assigned in the Business Information System.
8 Separator Hyphen used in the canonical display form.
9 Control digit Digit derived from the seven-digit sequence.
Official source
vero.fi oecd.org ytj.fi finlex.fi