Business, tax and funding
side business
In short and in plain language
A side business is work for yourself next to your main job.
You still earn most of your money somewhere else, for example as an employee.
Many people start this way. Check your work contract first.
Definition
In a side business, someone is self-employed while their main income comes from another activity, such as employment. Many start-ups begin this way, and some later become a main occupation. Whether a side activity is allowed can depend on the employment contract.