This question I get 8 out of 10 questions. When do I need to register at the chamber of commerce and become a real entrepeneur?
My advice is standard if you deal independent of your family and friends and just on people you meet at our society. Then you have to register at the chamber of commerce and get a VAT-number.
But when does the tax office see you as an entrepeneur?
For the VAT/BTW as soon as you buy and sell products or services at the marketplace called society.
For the incometax your are an entrepeneur as soon as you make 1225 hours for your company (or more hours then the job you have a side).
If I look tax wise to the the benefits you can earn in the income tax situation then you see diverent options: