I would like to work out a payment arrangement

If you are unable to pay the full amount of the invoice at once, it is possible to settle a payment arrangement. This is possible for invoices with a total amount that is higher than €20,- and with a maximum of six installments. 

If you enter your payment reference below, and click through the steps you will reach a page that gives you the option for "Uitstel van betaling" (deferred payment) or "Betalingsregeling" (payment arrangement).