Working through an invoicing company has become more popular. Working through an invoicing company has been interpreted as being an entrepreneur because in such situations the company offering the invoicing service is not an employer. If there is no employer, there is no employment relationship either. When you do paid work without being in an employment relationship, you are considered to be an entrepreneur.
If we were to consider you to be an employee based on an employment relationship, the other party of the employment contract should be an employer. A company that only takes care of the accounting, invoicing and payment of salary for people who perform the work cannot be considered to be their employer. Often, such companies do not work in the same business as you. Instead, they offer you support services based on membership or agreement. Such support service agreements do not give you a personal obligation to work for the company that provides the support services. And this is a requirement for an employment relationship.
While working through an invoicing company, you often find the assignments yourself and make the agreements with the clients. You have the opportunity to agree on prices and other terms independently. In addition, you may carry out the actual work in your own premises or at the client’s premises. You may own or rent your working equipment. Those matters suggest that you do not work in an employment relationship.