Church of Denmark (Folkekirken)

Denmark's national church traces its establishment to 1536, when King Christian III, having won a civil war against forces loyal to the old Catholic hierarchy, decreed that Lutheran Christianity would become the kingdom's religion. Catholic bishops who resisted were imprisoned, church property was confiscated by the crown, and the German reformer Johannes Bugenhagen arrived from Wittenberg the following year to help organize the new Lutheran church's institutions. That founding act still governs the church's constitutional standing today: Section 4 of the Danish Constitution states that the Evangelical Lutheran Church is Denmark's Established Church and, as such, is supported by the state.

The church today comprises eleven dioceses, ten on the Danish mainland and one in Greenland, each headed by a bishop, and subdivided further into roughly a hundred deaneries and about 2,200 local parishes. What sets its governance apart from its Nordic Lutheran neighbors is an absence rather than an office: Denmark's church has neither an archbishop nor a central synod empowered to define doctrine or set nationwide policy on the church's behalf, a structure Sweden and Norway both moved away from once their own state churches gained independent synodical government. In Denmark that central authority instead rests with the elected Parliament and a government Minister for Ecclesiastical Affairs, who administers the church's legal and financial framework while, by long convention, leaving spiritual questions to the bishops and parish clergy themselves.

Nearly every Dane is nominally a member of Folkekirken from birth, since membership is conferred automatically through infant baptism rather than through any adult profession of faith, and it persists until a member formally resigns through their local parish. That mechanism, more than active recruitment or quiet attrition, is what shapes the membership figures the church itself publishes: roughly seventy percent of Denmark's population remained registered members as of the mid-2020s, a share that has been declining gradually for decades as more Danes complete the resignation paperwork rather than simply drifting away while staying on the rolls.

Membership carries a direct financial consequence most members encounter every year on their own tax return. Kirkeskat, the membership tax that funds the bulk of the church's parish and diocesan operations, is collected automatically through the ordinary state income tax system at a rate each municipality sets for itself, and only members who are also taxable in Denmark pay it at all, which is why children and others with no taxable income are counted as members but owe nothing. A member who resigns from their parish stops owing the tax immediately, which makes the decision to formally leave, rather than any change in belief or churchgoing habit, the one act that moves a household out of both the membership count and the tax rolls at the same time.