[johnfuller]

The easiest way to go for everyone is to work for the remote company as a contractor. Then you take care of your own taxes as someone who is self employed. In the U.S. if you don't have another business structure setup for doing contract work, then you are automatically a sole proprietor. I imagine Germany has something similar.

Hire an accountant to figure out what extra tax hit you will take working as a contractor as opposed to an employee. Whatever you would normally charge the company to work work for them - add that extra tax hit, the costs of the accountant to handle your taxes and whatever overhead costs that you will take on by working remotely vs working in their office.

Otherwise, the company you are looking to work for will likely set other demands based on whatever works best in their system. Be flexible, but make sure to add the above mentioned costs.