Contact us

Our headquarter is located in Helsinki, Finland 

Tieto Corporation
Aku Korhosen tie 2-6, (Helsinki Region Transport Journey Planner)
P.O. Box 38, FI-00441 HELSINKI 
Finland

Phone: +358 207 2010
Fax: +358 20 726 8898

Tieto personal email addresses are in the format: firstname.lastname@tieto.com

E-invoicing

We encourage our partners to use e-invoicing to make handling of invoices more effective and quicker. For more information about sending e-invoices read the following:

How to send e-invoices to Tieto (pdf)

Invoicing addresses

You can find the invoicing addresses from the right side link of this page.

For invoicing addresses in other countries, please contact your local contact person.

Invoice content policy and requirements for purchase invoices