The California Addenda To Change In Ownership Report is a form issued by the California Department of Tax and Fee Administration (CDTF) to report a change in ownership of a taxable business. The addenda form must be submitted when there is a change in ownership of a business that is registered with the CDTF. There are two types of California Addenda To Change In Ownership Report: Standard Addenda and Special Addenda. The Standard Addenda is used to report a change in ownership when the new owner is an individual, a corporation, a partnership, or a limited liability company. The form must be completed and submitted to the CDTF within 15 days of the change in ownership. The Special Addenda is used when the new owner is a trust, estate, limited partnership, or other entity that is not an individual, a corporation, a partnership, or a limited liability company. This form must also be completed and submitted to the CDTF within 15 days of the change in ownership. The California Addenda To Change In Ownership Report is an important form to submit to the CDTF to report a change in ownership of a business. It is important to ensure that the form is completed accurately and submitted within the required timeframe.