Property tax in Williamson County, Tennessee
In Williamson County, the property tax bill comes from the Williamson County Trustee's Office. The 2026 bill is due February 28, 2027. You can look up and pay the bill on the county's own payment page. Taken from Williamson County's own pages, checked September 23, 2026.
The median property tax bill in Williamson County, Tennessee is $3,004 a year, which is about 0.4% of the county's median home value of $751,900. That effective rate is lower than the typical Tennessee county (0.47%) and lower than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.
Who sends the property tax bill in Williamson County, and how do you pay it?
The bill comes from the Williamson County Trustee's Office. The value it is based on is set by a separate office, the Williamson County Property Assessor, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.
One bill for most owners: the Trustee collects for Williamson County, the Franklin Special School District, the cities of Brentwood, Fairview and Franklin, and the towns of Nolensville and Thompson's Station. The City of Spring Hill is the exception: it bills its own city property tax separately, so Spring Hill owners get a second bill. Relief and freeze applications need an appointment, (615) 790-5709, and the tax must be paid in full first. Online payments run through the county's payment processor, InvoiceCloud, and card and electronic payments carry a processing fee the county does not keep.
When are property taxes due in Williamson County?
For the 2026 bill, Williamson County has one due date: February 28, 2027. Payable from the first Monday in October 2026 through February 28, 2027. Partial payments are accepted. February 28, 2027 is a Sunday. The county has not said whether a payment on Monday, March 1 counts as on time, and state law adds interest on March 1, so pay by Friday, February 26, 2027, the last regular weekday the office is open. For the 2025 bill, whose deadline fell on a Saturday, the Trustee's office opened that Saturday morning and accepted mail by postmark date. 2026 taxes become delinquent on March 1, 2027. Interest of 1.5% is added on March 1 and on the first of each month after that, set by state law (Tenn. Code Ann. 67-5-2010). The Trustee has no authority to waive, prorate or release any portion of the tax or interest.
From Williamson County's published schedule, checked September 23, 2026. If a date falls on a weekend or holiday, the county's own rules on the next business day apply.
Estimate the property tax on a home in Williamson County
Enter a home's market value for a ballpark at Williamson County's average effective rate of 0.4% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.
Estimated property tax: $3,008 / year
Property tax in Williamson County at a glance
| Measure | Value |
|---|---|
| Median annual property tax | $3,004 |
| Median home value | $751,900 |
| Effective tax rate | 0.4% |
| Typical Tennessee county rate | 0.47% |
| National median county rate | 0.81% |
Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.
How does Williamson County compare in Tennessee?
Among Tennessee's 95 counties, Williamson County has the 79th highest effective property-tax rate: 78 rank higher and 16 rank lower. That is on the lower side for Tennessee. Nationally, it ranks 2933rd of 3135 US counties by effective rate. See every Tennessee county ranked.
How much do homeowners in Williamson County actually pay?
The median is only the middle bill. Across Williamson County's 72,671 owner-occupied homes, 49.2% pay $3,000 or more a year in property tax, 76.4% pay at least $2,000, and 3.7% pay under $800. Another 1.9% report paying no property tax at all, which usually means an exemption covers the whole bill.
| Annual bill | Homes | Share |
|---|---|---|
| Under $800 | 2,656 | 3.7% |
| $800 to $1,499 | 5,856 | 8.1% |
| $1,500 to $1,999 | 7,310 | 10.1% |
| $2,000 to $2,999 | 19,760 | 27.2% |
| $3,000 or more | 35,728 | 49.2% |
| No property tax paid | 1,361 | 1.9% |
Owners with a mortgage pay a median of $3,021 and owners without one pay $2,972. That is within 10% either way, so in Williamson County paying off the house does not go with a noticeably different bill. Census table B25103.
How does the Williamson County property tax bill compare with local incomes?
The median property tax bill of $3,004 is about 1.9% of the median income of Williamson County homeowner households, $155,730 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 78.8% of Williamson County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.
Have property taxes gone up in Williamson County?
Yes. The median bill went from $2,415 in 2015-2019 to $3,004 in 2020-2024, a 24.4% rise. Over the same span the median home value moved 67.5%, from $449,000 to $751,900. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.
Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.
Property tax in counties next to Williamson County
Williamson County borders 7 counties.
| County | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Davidson County, TN | 0.6% | $2,506 | $417,400 |
| Marshall County, TN | 0.48% | $1,346 | $279,800 |
| Rutherford County, TN | 0.48% | $1,839 | $382,600 |
| Cheatham County, TN | 0.47% | $1,582 | $338,700 |
| Dickson County, TN | 0.47% | $1,431 | $306,400 |
| Hickman County, TN | 0.46% | $1,038 | $224,100 |
| Maury County, TN | 0.45% | $1,588 | $355,700 |
| Williamson County, TN (this county) | 0.4% | $3,004 | $751,900 |
How is a home assessed in Williamson County?
Tennessee assesses homes at 25% of market value in every county, Williamson County included. How Tennessee assesses and reappraises homes.
Is there a homestead exemption in Williamson County?
No. Tennessee has no general homestead exemption; relief comes through the state Tax Relief program and the local-option Tax Freeze. That is the Tennessee rule, and it applies in Williamson County. Tennessee's exemptions and relief programs in full.
On top of the Tennessee programs, Williamson County runs its own:
- Williamson County Broad Base Tax Relief Program: County-funded refund for homeowners 65 or older by December 31, 2026 living in the home as their primary residence, with combined 2025 household and co-owner income of $63,000 or less; it refunds county property tax and parts of other county taxes after the bill is paid in full. Apply by April 5, 2027.
- Williamson County Property Tax Freeze: A state-authorized local option the County Commission adopted in 2008: homeowners 65 or older by December 31, 2026 with combined 2025 income of $69,150 or less have the county tax on their primary residence (and up to 5 acres) frozen at the qualifying year's amount, re-applying every year; it covers only the taxes of governments that adopted it, and the City of Franklin and City of Brentwood are not on the state's list of participants. Apply by April 5, 2027.
How to appeal your Williamson County property assessment
In Williamson County you appeal to the Williamson County Board of Equalization. The deadline: The board meets each June (state law convenes it June 1). For the 2026 tax year the county asked owners to call the Property Assessor's office at (615) 790-5708 no later than June 11, 2026 to schedule a hearing; that window has closed, and the county's standing advice is to call the first week of June. An informal review with the Assessor's office can be requested at any time first. A county board decision can be appealed to the Tennessee State Board of Equalization by August 1 of the tax year or within 45 days of the county board's notice, whichever is later. How to file. Checked September 23, 2026 against the official appeal rules.
How Tennessee's appeal process works, including the next level if the first one turns you down.
Tennessee rules from primary state sources, reviewed September 7, 2026; sources on the Tennessee page.
Work out your own numbers
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How much house can I afford?
Your income, debts and down payment against the 28/36 rule lenders actually use, with Williamson County's tax rate to hand.
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Mortgage calculator
Monthly payment with principal, interest, tax and insurance, plus what an extra payment saves you.
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Tennessee income tax
Brackets, standard deduction and what Tennessee actually taxes.
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Sales tax in Williamson County
The other local tax: combined state and local rate for this county.
Sources
- Median real estate taxes paid and median home value for Williamson County, Tennessee: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.