Sending E-invoices to Private Customers (B2C)

Fill in the contract

Follow these instructions when you want to manage clients' e-invoicing or direct payments using the Apix service for a company with a Finnish company number.

Alternatively, you can follow the same instructions when you no longer want to use the Apix service for clients' e-invoicing or direct payments.

Detailed instructions can be found on Apix’s website: E-laskutussopimuksen avausohje (in Finnish)

EDI code

The EDI code in the contract is formed using the company number and adding 0037 in front of it and removing the dash. As an example, Apix' company number 2332748-7 is transformed into EDI code 003723327487.

Send the contract

Signed contracts must always be sent to Apix to the following address:

Contracts must be submitted to Apix in PDF format, including attachments, by email to servicedesk@apixmessaging.com

Usually, the service is opened within 4-5 working days. Then Apix sends invoicing information to banks, and the e-invoicing service becomes available within 2-3 working days.


Case 1: New billing company

The new billing company must fill in the following documents (attached below):
 - SOP1_Sopimus e-laskupalvelusta_apix.docx
 - SOP2_Asiakassuhteen_perustaminen_apix.docx
 - As an attachment: a statement from the trade register (information that trade register has about your company)


Everyone who signs the contract must have the right to sign. In addition to the documents above, a copy of identification (passport, ID card or driver's license) of each signatory is required.

Case 2: The company terminates the service

The company needs to fill in the form SOP3_e-laskusopimuksen_irtisanominen.docx and send it to Apix. This form can be used to order the necessary information to use the e-invoicing service through another service provider.