Ad Valorem Tax: (Latin for "according to value") A tax imposed on properties in proportion to each one's value. The most common are the ad valorem taxes imposed on real and personal property, which are based on the assessed or appraised values.

Appraised Property Value: Also known as Actual or Fair Market Value, is the true market value of a property.

Assessed Property Value: The amount of a property's value to be taxed. This value is determined by the Tax Department and is the actual value on the date of the last county-wide revaluation. (If a property did not exist at the last revaluation its assessed value will be what the actual value would have been had it existed at the time of the last revaluation).