Calculate healthcare contribution With the calculation module you can find out what you pay approximately in one year in healthcare contribution to the CAK. You can calculate the total healthcare contribution for yourself and for your family members. These are family members aged 18 or over who are insured with you. You fill in the information that applies to your situation. To calculation module healthcare contribution Please note Please note that the calculation module provides an estimate of the healthcare contribution you are going to pay. You cannot derive rights from the result. Text is only availabe in Dutch at the moment.