Suborganisation identifier as a defining specifier in the Incomes Register

The suborganisation identifier is determined by the assignor, i.e. the company itself, for use as a means of differentiating between the organisation’s business departments or units. The payer can determine the content of the suborganisation identifier so long as the identifier is formed in accordance with the schema requirements of the Incomes Register.

The company decides the content of the suborganisation identifier at the time of granting the mandate without needing to notify the Incomes Register Unit. The information will be transmitted to the Incomes Register via Suomi.fi e-Authorisations or the Katso service.

Suborganisation identifier in the Suomi.fi e-Authorisations service

In the Suomi.fi e-Authorisations service, the suborganisation identifier is added as the authorisation code's defining specifier in connection with the authorisation process. The suborganisation identifier is connected to the authorisation code “Reporting earnings payment data” or “Browsing earnings payment data”. The identifier is part of the mandate granted.

The maximum length for a suborganisation identifier in Suomi.fi e-Authorisations is 20 characters. The name of the authorisation code (e.g. "Reporting earnings payment data") does not have to fit into those 20 characters.

Suborganisation identifier in the Katso service

In the Katso service, the suborganisation identifier is added to the end of the Business ID. Granting of mandates in Katso will continue as before. The maximum length for a suborganisation identifier in the Katso service is 20 characters. In the Katso service, the suborganisation identifier can contain only numbers.

Format of suborganisation identifier

The format of the suborganisation identifier must comply with the schema requirements of the Incomes Register. Letters and numbers can be used in the identifier on the basis of the default character encoding for XML, UTF-8. The identifier must not contain the Byte Order Mark (BOM) character. The following special characters must not be used: &, <, >, ', ", -- (double hyphen), /*, &#. In the Katso service, the suborganisation identifier can contain only numbers.

More about suborganisation identifier (chapter 1.2)

Reporting to the Incomes Register using a suborganisation identifier

When a company reports data to the Incomes Register, it must use the same suborganisation identifier that it formed in Suomi.fi e-Authorisations or Katso service.
When data is reported via a technical interface or upload service, the suborganisation identifier applies to all the records. A single record can only contain reports by a single payer, and they all must have the same suborganisation identifier. The data of each suborganisation must be submitted as its own individual record.


When data is reported to the Incomes Register, “Payer's own codes (2)” is marked as the “Type of payer’s suborganisation's identifier” (PayerSubOrgType) and the same suborganisation identifier that was formed in Suomi.fi e-Authorisations or Katso service is marked as the suborganisation identifier. Only the suborganisation identifier part is used when reporting the suborganisation identifier. The authorisation code is not given where the identifier is marked.

Suborganisation identifier can be used in employer's separate report

The employer's separate report is payer-specific. The company only submits one employer's separate report per month. The separate report is a compilation of all the data that the company must submit on an employer's separate report. In 2018, it has been possible to submit such data individually for each sub-accounting unit.

When submitting an employer's separate report to the Incomes Register, a suborganisation identifier can be used to apply restrictions of access to the data provided on the employer's separate report in the Incomes Register.

Example: If the company wants only Unit X to have access to the data provided on the employer's separate report, the company must apply the suborganisation identifier on the employer's separate report.