What is a solopreneur, and what kind of business can a solopreneur form or develop? The term “solopreneur” is often used interchangeably with “entrepreneur,” “freelancer,” “self-employed” or “small business owner,” perhaps since all of them will likely have to pay self-employment taxes and file 1099 forms. While any of these terms may be simultaneously valid for your business, there are distinctions between them.