The public sector with its regional and self-governing bodies (e.g. special-purpose associations, health insurance funds, universities) and private-law forms of enterprise (e.g. corporations in the energy supply sector) performs public tasks. With its institutions, it serves the common good and, in particular, public services of general interest for the population.
The public sector, including the churches, is increasingly confronted with complex tax law. At a European level, the idea of competition dominates, which puts a great deal of pressure on the justification of tax privileges for public sector activities. At national level, on the other hand, the special public welfare purposes of these activities play a special role and justify tax exemptions. This is not an easy situation in terms of tax compliance requirements.