3.1 Unless otherwise stated or accepted in writing by Kantoor Mr. van Zijl, Kantoor Mr. van Zijl will invoice the client for the cost of its services at regular intervals on the basis of the actual time spent on the commission, at an hourly rate agreed with the client. If a specific hourly rate has not been expressly agreed with the client, the hourly rate usually charged by Kantoor Mr. van Zijl to other clients will apply.

3.2 Kantoor Mr. van Zijl will reduce or increase the time to be charged for if and insofar as special circumstances on the part of Kantoor Mr. van Zijl mean that the matter being handled has required more or less time than would have been the case without these special circumstances.