Fort Loudoun Lake Property Tax by County

Tennessee Property Tax Basics

Tennessee residential property is assessed at 25% of appraised market value. That assessed value is multiplied by the applicable tax rate — expressed as dollars per $100 of assessed value — set by the county commission and any applicable city. On a $700,000 lakefront home, the assessed value is $175,000. That $175,000 figure is what the rate gets applied to. A Knox County-only rate of $1.5540 generates $2,719.50 per year. The full combined rate of $3.7096 (including Knoxville city) generates $6,491.80 per year on the same home. The difference is $3,772 per year — driven entirely by city boundary.

Knox County: The 2026 Reappraisal Situation

Knox County is conducting a countywide property reappraisal in 2026. This is the most material property tax variable in the Fort Loudoun market right now. The Knox County Property Assessor's office has indicated that home values may rise approximately 50% from the prior assessment base in many parts of Knox County. Under Tennessee's certified rate law ("truth-in-taxation"), the county must adopt a new lower rate to keep total property tax collections revenue-neutral. If values rise 50%, the revenue-neutral certified rate for FY2026–2027 would be approximately $1.03 per $100 — compared to the current $1.5540.

The critical nuance for Fort Loudoun buyers: the Knox County Commission may vote to keep the rate at $1.5540 rather than adopting the lower certified rate — which would represent a significant total tax increase to fund additional services. This debate was active during the 2026 Knox County mayor's race. Until the commission formally votes on the FY2026–2027 rate, no one can tell you definitively what the new Knox County tax rate will be. Budget using the current $1.5540 rate as a conservative baseline. Knox County Trustee: 865-215-2305.

The Knoxville City Rate: $2.1556 Additional

Properties inside Knoxville city limits pay the Knox County rate plus the City of Knoxville rate of $2.1556 per $100 assessed value — confirmed by the City of Knoxville Revenue Office. Combined, that is $3.7096 per $100. The Knoxville city boundary cuts across the Fort Loudoun waterfront in a way that is not always obvious from a street address or even a waterfront listing. The seven-mile Knoxville waterfront stretch — with its restaurants, trails, and urban amenities — is substantially within city limits. Many of the most premium Fort Loudoun properties carry the full combined rate.

Properties outside Knoxville but still in Knox County — in the Farragut area, the Hardin Valley corridor, or the unincorporated lakeshore communities of Loudon — pay only the county rate. The rate difference is dramatic enough that two adjacent lakefront properties, one inside Knoxville city limits and one just outside, can carry materially different annual tax bills on identical assessed values. Confirm city boundary status for any specific property address at the Knox County Property Assessor website or by calling the Revenue Office (865-215-2084) directly.

Loudon County: The Alternative

Loudon County holds the portion of Fort Loudoun Lake from the dam area at Lenoir City northward into the mid-lake area. Loudon County's confirmed tax rate is $1.5183 per $100 assessed value (the same rate locked from the Tellico Lake research, as Loudon County covers both). This is slightly lower than the Knox County-only rate of $1.5540 and dramatically lower than the Knox County plus Knoxville city combined rate. Fort Loudoun lakefront in Loudon County — communities near Loudon, Lenoir City, and the lake sections south of the Knox County line — offers the lowest per-dollar tax burden on the reservoir.

Loudon County Trustee: 865-458-6040. Properties in Lenoir City (the municipality nearest the Fort Loudoun Dam) may carry a Lenoir City municipal rate in addition to the Loudon County rate — confirm for any Lenoir City address.

Blount County: A Small Footprint

Blount County holds a portion of the Fort Loudoun shoreline in the southeastern section of the reservoir, particularly around the Louisville, Tennessee area and the upper sections near the French Broad River arm. Blount County's tax rate requires direct verification with the Blount County Trustee (865-273-5900) before any offer on a Blount County Fort Loudoun property. Blount County has historically had rates in a similar range to Knox County-only, but the specific current figure must be confirmed.

Senior Tax Relief at Fort Loudoun

Tennessee's Property Tax Relief Program for qualifying homeowners 65 and older ($37,780 income threshold for 2025 program year) applies at Fort Loudoun in all three counties. For Knox County primary residences, the program is administered by the Knox County Trustee: 865-215-2305. For Loudon County: 865-458-6040. For Blount County: 865-273-5900. Applications are due by April 5. Knox County's reappraisal changes both the appraised value and the certified rate simultaneously, so the effective tax relief amount will adjust when the new rate is adopted — this creates additional complexity for senior homeowners planning around the relief program. Confirm the current year's reimbursement cap directly with the Knox County Trustee after the new rate is adopted.

What the Reappraisal Means in Practice

The 2026 Knox County reappraisal affects Fort Loudoun more than almost any other Tennessee lake because Knox County holds more of the lake's most valuable shoreline than any other county on the reservoir. Every listing's stated annual tax — whether from an agent, Zillow, Redfin, or an aggregator — will be wrong for Knox County properties until the new rate is adopted and the new assessed values are posted. The combination of a 50% assessed value increase and a lower certified rate may produce annual bills that are similar in total dollars to the prior year, or higher if the commission votes to keep the rate above certified. A buyer who closes in September 2026 needs to understand that their first full year's tax bill will be calculated on new values at the new rate — and neither of those numbers is confirmed at this writing. Budget for uncertainty and verify with the Trustee before committing to any cost model.