Williamson County Property Tax Calculator
Locality estimate page for Williamson County, Tennessee. Use this county/locality rate for faster screening, then confirm parcel-specific details with your local tax authority.
County/Locality Effective Rate
0.40%
State Effective Rate
0.52%
Sample Annual Tax Difference
-$510
Median Home Value (ACS)
$751,900
Median Annual Tax Bill (ACS)
$3,004
Owner-Occupied Households
72,671
The typical owner-occupied home in Williamson County is valued at $751,900 with a median real estate tax bill of $3,004 per year — an effective rate of 0.40%. Both figures come from the same ACS release, so the ratio is an estimate rather than an aggregate of individual bills.
State Mortgage Context: Tennessee
Most counties in this state follow the standard FHA floor framework.
State Effective Tax Rate
0.52%
FHA 1-Unit Floor
$541,287
FHA 1-Unit Ceiling
$1,249,125
In Williamson County, Tennessee, the current county-level estimate is 0.40%, or approximately $1,600 annually on a $400,000 home.
How to Use This County Estimate
Step 1
Enter your property value and assessment assumptions.
Step 2
Apply exemptions that may reduce taxable value.
Step 3
Compare county/locality estimate against statewide fallback.
Williamson County Property Tax Snapshot
Estimated effective rate: 0.40% · vs Tennessee: 0.52% · vs national benchmark: 0.90%
| Home value | Estimated annual tax | Estimated monthly tax |
|---|---|---|
| $250,000 | $1,000 | $83 |
| $400,000 | $1,600 | $133 |
| $500,000 | $2,000 | $167 |
| $750,000 | $3,000 | $250 |
| $1,000,000 | $4,000 | $333 |
Compare Nearby Property Taxes
- Williamson County0.40%
- Wilson County0.42%
- Knox County0.43%
- Blount County0.45%
- Bradley County0.45%
- Maury County0.45%
- Rutherford County0.48%
Source Transparency
Source: U.S. Census Bureau, ACS 5-Year Estimates (B25103 / B25077)
View sourceLast updated: August 2026
Estimates only. Confirm parcel-specific amounts with the official local taxing authority.
Need Statewide Context?
Visit Tennessee mortgage snapshot or return to the national calculator hub.