The church tax is only paid by members of the respective church, although the concept of “membership” is far from clear, and it may be asked what right the secular state has to tell the faithful what contribution they should make to their own denomination. People who are not members of a church tax-collecting denomination do not have to pay it. Members of a religious community under public law may formally declare their wish to leave the community to state (not religious) authorities. The obligation to pay church taxes ends once such a declaration has been made. Some communities refuse to administer marriages and burials of (former) members who had declared to leave it.