Germany is constitutionally and institutionally Christian in significant ways: the Kirchensteuer (church tax) system collects church dues through the state tax authority, the German Basic Law references God, and Christian Democratic Union parties have governed for most of Germany's post-war history. Christianity — both Lutheran and Catholic — shaped German culture, law, philosophy, and history profoundly. Culturally, Germany is secularizing rapidly: about 50% of Germans now have no church membership. 58/100 Mixed.
Germany's relationship with Christianity is institutionally distinctive. The German Basic Law (Grundgesetz, 1949) begins its preamble: "Conscious of their responsibility before God and man... the German people... have adopted, by virtue of their constituent power, this Basic Law." The reference to responsibility before God in the constitutional preamble reflects the Christian Democratic framers' explicit intent to root post-Nazi Germany in a transcendent moral order.
The Kirchensteuer (church tax) system is Germany's most distinctive Christian institution: registered members of Catholic, Protestant, and some other denominations have an automatic 8-9% surcharge on their income tax collected by the state tax authority and remitted to the church. This system generates approximately €13 billion annually for churches — making it one of the most significant state-church financial relationships in the democratic world.
Germany is the birthplace of the Protestant Reformation — Martin Luther posted his 95 Theses in Wittenberg in 1517, fundamentally reshaping Western Christianity. The Reformation, the Peasants' War, the Thirty Years' War, and ultimately the Peace of Westphalia (1648) that established religious tolerance in European law all unfolded on German soil. Catholic and Lutheran Christianity shaped German philosophy (Kant, Hegel, Nietzsche's critique of Christianity), music (Bach, Handel, Buxtehude), and legal tradition.
German church membership has declined dramatically. In 2022, for the first time, fewer than 50% of Germans were registered members of either the Catholic or Protestant church — a milestone that would have been unthinkable a generation ago. The Kirchensteuer system has accelerated formal departures (Kirchenaustritt, church exits) as young Germans opt out to avoid the tax. Regular church attendance is approximately 3-5% of the population. Germany is secularizing faster than most of its neighbors. Compare with England and Georgia. See the Pew Research data on Christianity in Western Europe and our Theology hub.