[Atropos]

If you are planning on VC-like returns by selling your company, you should start with a holding GmbH and an operative GmbH below (or crazier structures like a Holding GmbH & Co. KG). But: This way you have the maximum administrative costs and complexity in the beginning...

I think starting as an Einzelunternehmer makes sense in certain situations. I'm not a tax lawyer, but I'm a lawyer in a firm that advises startups and I have seen a lot of "Starts as Einzelunternehmer -> Does asset sale to own GmbH" type deals... "Normal" lawyers / tax advisors will never recommend this, because it is not a "simple check the box" exercise, and "sophisticated" lawyers are incredibly expensive.