These forms are provided in a fillable PDF format, which allows you to enter data directly into the form using your computer and Adobe Acrobat Reader. Learn about forming and registering your business online, and how to complete other types of business filings.Register your business (opens in a new tab). To form an LLC, a Certificate of Organization is required to be filed with the Corporation Bureau of the. For example, a sole proprietor with a DBA for their lawn mowing business might sign a contract "Laura Sanchez, DBA Lawns of Beauty. □ Sole Proprietorship. Name of SoleProprietor: 3. Both the Owner and Tenant must sign and date the form. Request for Taxpayer Identification Number and Certification.