Requirements for all invoices and credit notes:

• Invoices and credit notes must be typewritten and addressed to NTNU.
• The information must comply with the Norwegian bookkeeping regulations.
  • You can read more about the formal requirements for invoices on altinn.no.
• The invoice must refer to a valid 9-digit purchase order number from NTNU (e.g., 6000xxxxx).
  • For electronic invoices, this number must be entered in the field Invoice/OrderReference/ID. It's important that this field contains only NTNU’s purchase order number.
• If a purchase order number is not provided, an 8-digit cost centre number must be included instead.
  • This should be entered in the field Invoice/BuyerReference/ID. It's then important that this field contains only NTNU’s cost centre number.
• Please note that we cannot accept invoices that are consolidated, meaning that they contain multiple single invoices.

Invoices that do not meet these requirements will not be processed and will not be returned to sender.

Sending us invoices by email

Suppliers outside of Norway may send PDF invoices and credit notes by email to: invoice@okavd.ntnu.no.

Please note the following:

• Norwegian suppliers cannot use this email address.
• Only one invoice can be sent per email.
• Any additional attachments must be included in the same PDF file as the invoice.
• Text within the email itself will not be processed.
• File formats other than PDF will not be processed.

Reminders and debt collection notices

Both Norwegian and foreign suppliers can send reminders, debt collection notices/claims, or interest notes by email to: kontakt@okavd.ntnu.no.

Please use the subject line to briefly describe the purpose of the email, for example, "Reminder of payment."

Norwegian suppliers may also send reminders, debt collection notices/claims, or interest notes by post to:

NTNU

Økonomiavdelingen

Postboks 8900, Torgarden

7491 Trondheim

Norway

Please note:

• Invoices or credit notes from Norwegian suppliers must always be sent as EHF.
• Foreign suppliers may send invoices and credit notes in PDF format by email but not by post.

Getting started with sending electronic invoices

You do not need a separate agreement with NTNU to send electronic invoices. This can be done using an appropriate system or through an invoice portal.

• You can find an overview of systems and portals at anskaffelser.no.

Make sure that purchase orders from NTNU are not filtered as spam

NTNU uses the Norwegian Agency for Public and Financial Management (DFØ) to manage purchases and invoices.

To ensure that you receive our purchase orders, please check that emails from NTNU are not blocked by your spam filter.

Purchase orders from NTNU are sent from the following email addresses:

• ikke-svar@dfo.no
• no-reply@dfo.no
• ikke-svar=dfo.no@mg.dfo.no

NTNU's purchase order numbers are always 9-digit numbers starting with: 600000000.

Contact

If you have any questions about invoices or electronic invoices, please send us an email at: kontakt@okavd.ntnu.no.