The Catholic Church in Denmark has an electronic membership register where all members are recorded. The information includes name, address, date of birth and possible C.P.R. number. In view of the possibility of craving church tax automatically according to the same system used by the State Church (Folkekirken), it would be advisable to inform the Bishop’s office of the CPR numbers of all Catholics and their children. Change of address would then be automatically registered.
A special form can be obtained from the parish church or Bishop’s Office whereby one can give permission for the use of one’s CPR number. This information is strictly confidential.