In Germany, some religious communities can collect taxes from their members. This is called the
church
tax (Kirchensteuer).
The church tax is 8% of your income tax in Bavaria and Baden-Württemberg, and 9% in the rest of
Germany.
For example, if you earn €50,000 a year in Saarbrücken, you would pay around €800 in church tax.
If you are not a member of a church that collects church tax, you do not have to pay this tax. If
you
are, the only way to stop paying is to leave the church. You declare your religion during the
registration.
If you were baptized in your home country,
the church can tax you even if you register as an
atheist.