Working as an expatriate abroad is of course a highly interesting personal experience. And getting to know the local foreign culture becomes part of the package, whether halfway around the globe or in a neighbouring European Union country.
Mistakes made upon arrival can cost dearly and a tax consultant is possibly the most important partner to acquire early. Germany does not have a policy of separating state and church. To the contrary. Church tax is deducted directly from pay from the moment a simple box declaring religious ties has been ticked. That might be fine for many, not so for others. Especially since this rather large sum is non-refundable.
Tax consultants obviously advise all other financial aspects of being an expat in Düsseldorf.