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Useful information on invoicing

There are many companies in the Castellum, so it’s important to issue your invoice to the correct company and include the correct reference details. If this information is missing or incorrect, you risk payment being delayed and having to issue a new invoice. Here you will find answers to the most common invoice questions from our suppliers.

Payment Terms

We apply 30-day payment terms. Any late payment interest is charged according to the Interest Act. The main rule is that we do not pay any invoicing fees unless there is a special agreement.

Reference Marking

All supplier invoices must be marked with a six-digit reference code in the field “your reference.” The reference number indicates which property/cost center the order relates to. You should be provided with the reference code. If you do not have a reference, please contact the person who placed the order and ask for the reference number. The person who ordered the goods/service must be stated in a separate reference field. Enter the person’s full first and last name. It is important that this is not entered in the same field as the six-digit cost center.

Exemple of reference marking
Reference: 601138
Ordered by: Anna Andersson

Reference for projects
Reference 1: 601138
Reference 2: 1004001 - 9105
Ordered by: Anna Andersson

If you send your invoice in Peppol format, please fill in the references according to the instruction below. 

Instruction for reference marking on Peppol invoices

Company Name

We have many companies within Castellum. To comply with tax legislation, it is important that you as a supplier issue the invoice to the correct legal entity. Therefore, any supplier invoice lacking the correct company name will be returned for completion as we cannot process these in our supplier ledger system.

Invoicing Address

We prefer you to submit e-invoices. If you are unable to send an e-invoice, please forward your invoice as a PDF to levres@castellum.se, or alternatively, send a paper copy to our scanning center at the following address:

Correct company name
INX number
831 90 Östersund
Sweden

INX Number, GLN Number, and Peppol ID

Below is a list of organization numbers, INX numbers, GLN numbers, and Peppol IDs for all companies within Castellum.

TvÄ personer sitter utomhus och pratar

Do you have questions about invoicing?

Contact Castellum's finance department

Tel: +46 31-60 74 00
Email: levres@castellum.se

Contact our invoice partner/VAN operator InExchange

Tel: +46 500-44 63 60

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