Both unpaid Real and Personal property will be included in the annual Advertising List that is included in the local paper starting the first part of May. All owners of business personal property must complete and return a personal property declaration to the Assessor no later than November 1st annually.Where is the return filed? Your Secured Property Tax Bill contains your Assessor's Identification Number (AIN), Year, and Sequence, which you will need to complete the transaction. Ready to pay your property taxes now? Search and pay below or go to one of the tabs to get more information. The Franklin County Tax Assessor's Office is responsible for listing and assessing business and professional property for ad valorem taxation. Equation (6) accounts for the two other types of property tax abatement used in Franklin County. Note to California lessees: Once you return your vehicle, you will need to fill out the California Release of Liability Form . Should a payment be dishonored, then the customer is subject to additional fees in accordance with State law.