4.1 Unless expressly agreed otherwise, a period of fourteen days applies for the payment of invoices from the office Mr. van Zijl. In the event of non-payment within the set time, the client will be in default by operation of law, without a warning or notice of default being required, and he will be obliged to pay an interest equal to the statutory interest referred to in articles 6:119 and 6:120 of the Netherlands Civil Code or (if the client is a natural person who practices a profession or runs a business, or is a legal person) articles 6:119a and 6:120 of the Netherlands Civil Code, this interest to be calculated from the fifteenth day after the date of the invoice.

4.2 Should the client be in default, all invoices submitted by Kantoor Mr. van Zijl in the name of the client will be due and payable, including any invoices still to be made out by Kantoor Mr. van Zijl for services rendered during the current invoicing period.

4.3 All costs incurred by Kantoor Mr. van Zijl in connection with the recovery of the amount owed to Kantoor Mr. van Zijl (including the costs of engaging staff of Kantoor Mr. van Zijl, which will be charged at the hourly rate mentioned in 3.1), will be paid to Kantoor Mr. van Zijl by the client in full, including extrajudicial collection costs which will be deemed to be at least 15% of the amount to be claimed and will come to at least € 125.