A sole proprietorship is a business run by one individual.
Nothing is filed, so there is no filing fee.
There are few restrictions on the name of a sole proprietorship if no Assumed Name Certificate is required. A business corporation created under Minn. Stat. 302A is a separate legal entity for purposes of liability. Its owners are not personally liable for the debts and obligations of the corporation unless they fail to treat it as a separate legal entity or use it to commit fraud or other wrongful conduct. Then a court may determine that the owners should be personally liable for corporate debts.