Ad valorem tax & other important tax terms to know

by Lena and Rich Benenati 03/09/2025

Ad valorem is a Latin term meaning "according to value." In tax language, ad valorem means a flexible value dependent on the specific asset. Ad valorem is just one of many important terms related to property taxes you should know. Here are a few more examples of important property tax terms:

Assessed value

Assessed value refers to the value of your property as determined by the tax assessment rate. The assessed value of your property is the final determination of how much you need to pay in property taxes. To find the assessed value, you multiply the local assessment rate by the fair market value. 

Using the following formula, we can figure out the assessed value depending on market price and assessment rate:

Assessed Value = Market Value x (Assessment Rate / 100)

For example, if the market value is $150,000 and the assessment rate is 90%, the assessed value comes to $135,000.

Fair market value

Fair market value is determined by factors including the features and size of your home in addition to outside variables like the local market. The value of similar properties in your area can affect the fair market value, making it important in finding the best buying or selling price for a piece of property.

Millage rate

Millage rate is a specific kind of tax rate. It's based on the amount per $1,000 of property value. Multiple millage rates can go into determining property tax amounts, including different rates from different local agencies like school boards, counties and emergency service providers.

These are only a few of the most important property tax terms to know. With a better understanding of the terminology, you'll be better equipped to make the best real estate decisions.

About the Author
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Lena and Rich Benenati

Lena and I have been helping our clients buy and sell real estate since 2002, marking over 26 years of combined market experience! We will earn your trust by utilizing proven marketing strategies, certified professional negotiating skills, and targeted technology. Add to this our local market insight and consistent follow up, and it adds up to a great experience for you! A family owned and operated business, we strive to be your trusted adviser, helping you navigate the home buying and selling processes. It is our mission to combine our extensive experience and superior customer service together with a positive attitude to ensure that you enjoy your buying or selling experience. Our customer service extends beyond the sale, providing you with useful information regularly and connecting you with the resources you need, when you need them. This is why an exceptionally high 80% of our business is referred to us by our past clients. We look forward to exceeding your expectations, in English or Spanish as you desire. Lena & Rich, a team you can trust, for everything real estate.