Williamson County property tax

Williamson County has six cities and one special school district, so the rate depends on where the property is.

Franklin. Part of Franklin is in the Franklin Special School District. A property there pays the city rate, the district rate and a lower county rate. The rest of Franklin pays the city rate and the county rate.

Brentwood. Brentwood adds $0.19 to the county rate. The Trustee collects the Brentwood tax with the county tax.

The county starts with your appraised value. That is what the Assessor says your property is worth. A home is taxed on 25% of it. That part is the assessed value. The tax rate is a charge on each $100 of assessed value.

Appraised value × 25% = assessed value
Assessed value ÷ 100 × tax rate = tax for the year

A property inside a city pays the county tax and the city tax. The table shows the two rates together. A property outside a city pays the county rate, $1.30.

The county rate is $1.30. At that rate a home pays $325.00 a year for each $100,000 of appraised value. $100,000 × 25% is $25,000 of assessed value. $25,000 ÷ 100 × $1.30 is $325.00.

These are the 2026 rates, as the Trustee published them. A commercial property is taxed on 40% of its appraised value, at the same rates.

Figure the tax on your own value, or see the rate in every Tennessee county.

When the bill comes and when it is due

The Trustee mails tax bills in early October. Pay in full by the last day of February to avoid interest. The Assessor sets your value. The Trustee sends the bill and takes the payment.

Interest is 1.5% for each month from March 1. The Trustee takes part payments. The Trustee collects the county tax, the Franklin Special School District tax, and the city tax for Brentwood, Franklin, Nolensville and Thompson’s Station. Fairview and Spring Hill collect their own city tax.

Office

Williamson County Trustee

Trustee

Karen Paris

Address

1320 West Main Street, Suite 203
Franklin, TN 37064

Phone

(615) 790-5709

Email

Info.trustee@williamsoncounty-tn.gov

Hours

Monday to Friday, 8:00 a.m. to 4:30 p.m.

You can ask the Assessor to look at your value again. This is the informal review. It costs nothing.

When to file

You can ask the Assessor’s office to review your value at any time. The Assessor makes the year’s values public in May, and mails a notice to each owner whose value changed. A review does not hold your place with the county Board. Call in the first week of June to make a Board appointment.

You can get ready now. Sign your authorization and upload supporting documents, and we file when the window opens.

How the review works in Williamson County

Call the Assessor’s office at (615) 790-5708. The office says that owners often settle a disagreement at this step, without a Board appeal.

A review can lower your value, leave it the same or raise it.

What to send

Send facts about the value. The Assessor sets the value and does not set the tax rate, so a complaint about the bill does not help.

• Recent sales of similar homes near yours, for less than your appraised value.
• Errors in your record, such as the wrong square footage or a basement marked as finished.
• Photos and repair estimates for problems that lower the value.
• Your closing statement, if you bought the home for less than its appraised value.

More evidence helps. A price estimate from a website is not a sale, and an assessor does not count it. See how to find comparable sales and the Tennessee appeal guide.

If the Assessor keeps your value

The next step is the Williamson County Board of Equalization. The Board meets in June each year. Call the Assessor’s office at (615) 790-5708 in the first week of June to schedule an appeal. The owner, the taxpayer named on the roll or an authorized agent can file. After the county Board, you can appeal to the State Board of Equalization. See the appeal dates for every Tennessee county.

TN.tax can file it for you

TN.tax files informal reviews with the Williamson County Assessor. We find the sales, write the report and file the request. Our fee is 40% of the first year’s tax saving on a home you live in, and 30% on a rental or commercial property. If your value does not come down, you pay nothing.

We do not file with the Board of Equalization. If a Board appeal makes sense for your property, we tell you, and you decide. Start your free review.

Williamson County set new values for every property in 2025. The next reappraisal is in 2028, on the state Comptroller’s schedule.

The county is on a 3-year cycle. You can ask for a review in any year. You do not have to wait for the next reappraisal.

Your value stays the same between reappraisals unless the property changes or a review changes it. A sale does not reset it. If you bought your home for less than its appraised value, the county keeps the higher value until you ask for a review. See how a purchase price can lower your value.

A reappraisal does not raise the county’s total tax by itself. State law makes the county set a rate that brings in the same total as before. The county commission then votes on the rate for the year.