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Invoicing in the Helen Group

The Helen Group only receives e-invoices. If you already have the option to issue e-invoices, please send your invoices to our Group companies as e-invoices starting from the next possible invoice.


If you still have not started using e-invoicing, you can send e-invoices through the Basware Supplier Portal service. This requires an Internet connection and registration in the service. The service is free of charge. When you register in the supplier portal, you can send e-invoices to Helen Group companies and also to over 10,000 other organisations.

The service is aimed especially at small suppliers who do not have an invoicing system enabling e-invoicing. Banks, e-invoice operators and accountancy firms also offer several alternative methods for e-invoicing.

Register in the Basware Supplier Portal service 

Instructions for using the application (PDF)

In user/technical problems related to the Supplier Portal, please contact Basware with whom we have an agreement on user support for our customers. Telephone +358 209 3410 030, e-mail:

Use of reference numbers

A reference number is needed in the payment of all invoices. The reference number is the order or contract number provided in connection with the order. The reference number must also be added to the e-invoice data.

As from 1 February 2018, invoices arriving without a reference number will be returned to the sender. More information in the Notice (PDF).

Helen Group payment terms

The general Helen Group payment terms are 30 days net (net 30). Please note this term of payment when invoicing Helen Group companies, unless otherwise agreed in a mutual contract with you. More information in the Notice (PDF).

Helen Group’s e-invoice addresses

The operator is Basware, operator ID: BAWCFI22.

Helen Ltd
Business ID 2630573-4
EDI identifier 003726305734

Helen Sähköverkko Oy
Business ID 2035428-7
EDI identifier 003720354287

Oy Mankala Ab
Business ID 0158738-4
EDI identifier 003701587384

Kiinteistöosakeyhtiö Helsingin Sähkötalo
Business ID 1901114-8
EDI identifier 003719011148

Reverse value added tax

We are subject to reverse tax liability. Reverse VAT applies to valid framework agreements and deliveries taking place after 1 April 2011.

Further information about reverse VAT (PDF)