Billing the OZSW

If you wish to bill the OZSW, you can do so by sending an invoice. Your invoice should at least contain the following information:
The event, contact person, the invoice number and the SAP number.

Addressed to:
Universiteit Leiden
Instituut voor Wijsbegeerte Dutch Research School of Philosophy (OZSW)
T.a.v. Financieel Shared Service Centre (FSSC)
Postbus 9500 2300 RA Leiden

Your invoice should also contain the SAP-number. If you have not received that number, please contact the secretariat prior to sending the invoice. The invoice should also contain the BTW/VAT number, which is the following:

  • Vendors located within the EU: NL 001935549B01.
  • Vendors located outside of the EU: NL 809778282B01.

Please note, submission of invoice can only be done via email to When sending the invoice, only send one invoice per email. We only process emails which subject states the event, the invoice number and the SAP number. If you have any questions, or you would like to request more information, please contact the OZSW secretariat. Please also review the following PDF (in Dutch only) for more information: Richtlijnen aanleveren inkoopfacturen – Leveranciers_Versie 1.3

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