How much is the peak surcharge? The peak surcharge amounts to €0,25 for a parcel and € 0,15 for a letterbox package. The peak surcharge is applied on top of your regular price and existing surcharges for sending a parcel. Gerelateerde vragen Why are the rates being increased from 1 January 2024? Why is the peak surcharge applied? How much does it cost to send a parcel with insurance? How do I calculate the volume of a parcel with unequal sides? Does the PostNL volume surcharge also apply to return parcels within the Netherlands?