I don't know about business taxes, but at least for a "simple" application like mine (fulltime employee, homeowner with mortgage) all the relevant information a

I don't know about business taxes, but at least for a "simple" application like mine (fulltime employee, homeowner with mortgage) all the relevant information about income and wealth taxes was prefilled and correct. The only thing I had to enter were my "burgerservicenummer" and one deductible post (a university course). The whole thing took about 15 minutes, including digitally signing and submitting it.