The Real Cost of Living on Old Hickory Lake

Tennessee's Tax Advantage Before You Even Calculate

Tennessee has no income tax on wages, salaries, or retirement distributions. Social Security is not taxed. Pension income is not taxed. 401(k) and IRA withdrawals are not taxed. The Hall Income Tax on investment income was fully repealed in 2021. Tennessee's state-level tax burden on most retirees and workers is near zero, which is the foundation of its appeal as a relocation destination. The property tax — calculated differently from South Carolina — is where the county-by-county variation comes in and where buyers need to do precise math rather than rely on county generalizations.

Tennessee assesses residential property at 25% of appraised fair market value. Tax rates are stated per $100 of assessed value. To calculate: multiply the home's appraised market value by 25% to get assessed value, then multiply assessed value by the applicable tax rate, then divide by 100. A $700,000 home in any TN county: $700,000 × 25% = $175,000 assessed. Divide by 100 = 1,750. Multiply by the county rate to get the annual tax bill.

Sumner County: $2.2520 Per $100 (Post-2024 Reappraisal, Stable Through 2029)

Sumner County completed its 2024 reappraisal and the resulting rate of $2.2520 per $100 assessed value is now settled. The next reappraisal is scheduled for 2029. This rate is the county-only rate — it does not include municipal millage for cities within Sumner County. On a $700,000 lakefront home in unincorporated Sumner County: $175,000 / 100 × $2.2520 = $3,941/year.

For a $700,000 home within the City of Hendersonville: Hendersonville adds a municipal rate of $0.9187 per $100 to the county rate. Combined: $2.2520 + $0.9187 = $3.1707 per $100. Annual bill: $175,000 / 100 × $3.1707 = $5,549/year. That $1,608/year municipal premium for Hendersonville versus unincorporated Sumner County is real and persistent — it reflects the city's additional services including its own fire department, police department, and municipal infrastructure. For Gallatin (Sumner county seat): the Gallatin municipal rate adds to the county base similarly. Contact the Sumner County Trustee at 615-452-1260 for current rates applicable to a specific parcel.

Wilson County: ⚠️ Active 2026 Reappraisal — Do Not Use $1.9089

Wilson County is in the middle of its 2026 reappraisal right now. The median property value increase across Wilson County was approximately 66.6%. Tennessee law requires the county commission to lower the tax rate to revenue-neutral levels after a reappraisal — the old $1.9089 rate applied to the old assessed values, and using it on newly appraised values produces a significantly overstated estimate. Wilson County Commissioner Lauren Breeze stated publicly in May 2026 that the new rate is expected to drop to approximately $1.17 per $100 assessed value. The new rate is being finalized and voted by the county commission in June 2026.

This is not a minor technical adjustment — it is a 39% rate reduction. On a $700,000 Wilson County lakefront home: at the old $1.9089 rate, the estimated annual bill was $3,341. At the expected ~$1.17 new rate: $175,000 / 100 × $1.17 = $2,047/year — $1,294/year less. Before closing on any Wilson County property, verify the current enacted rate with the Wilson County Trustee at 615-444-1285 or wilsoncountytn.gov. Do not use the $1.9089 figure — it will not apply after June 2026.

Davidson County: $2.782 GSD / $2.814 USD (2025 Rates)

Davidson County (which includes the town of Old Hickory on the lake's western shore) completed a 2025 reappraisal in which median values rose 45%. The Metro Council set the post-reappraisal rates at $2.782 per $100 for the General Services District (GSD) and $2.814 per $100 for the Urban Services District (USD). Most Old Hickory lakefront properties are in the GSD. On a $700,000 lakefront home in Old Hickory/GSD: $175,000 / 100 × $2.782 = $4,868/year. Davidson County properties are among the most affordable lakefront options per square foot on Old Hickory Lake, which is why the town of Old Hickory is sometimes described as Nashville's best-kept secret for lakefront value. Contact the Davidson County Trustee at 615-862-6330 for current rates.

All-In Annual Carrying Cost: $700K Lakefront in Hendersonville, Sumner County

The following estimates apply to a primary-residence owner in Hendersonville. These are estimates — contact the relevant county trustee and insurance providers for property-specific figures.

• Property tax (combined county + city): ~$5,549/year at $3.1707 combined rate. Stable through 2029 (next Sumner County reappraisal).
• Homeowners insurance: Lakefront properties in Middle TN typically run $3,000–$5,500/year depending on construction, age, water proximity, and selected limits.
• Flood insurance: Old Hickory Lake is on the Cumberland River system. Flood zone exposure varies significantly by cove and elevation. Elevation Certificate required before closing. NFIP policies typically $600–$2,000/year depending on elevation vs. BFE. Properties well above BFE may qualify for Preferred Risk rates under $700/year.
• USACE dock permit annual fee: Contact USACE Nashville District at 615-736-7161 for current fee schedule. Typically modest annual fee per permitted structure.
• Dock maintenance: Budget $500–$1,500/year for a maintained dock. Aluminum floating docks common on Old Hickory — lower maintenance than wood.
• HOA fees (if applicable): Fairvue Plantation in Gallatin and Foxland Harbor run HOA dues in the range typical for amenity-rich golf and lake communities — verify specific current amounts with the HOA or listing agent.

Total Annual Carrying Cost Range

A $700,000 lakefront primary residence in Hendersonville (combined Sumner + city tax, standard insurance, no HOA, maintained dock) carries estimated annual ownership costs of $10,000–$14,000 before mortgage. Unincorporated Sumner County properties at the same price point: $8,500–$12,000. Wilson County properties with the new ~$1.17 rate: $8,000–$11,500 depending on location and insurance profile. Davidson County / Old Hickory at the same price point: $9,500–$13,000 with higher effective property tax but lower acquisition cost. Nashville proximity across all of these markets is the value proposition that justifies carrying costs — you are not paying lake-retreat prices; you are paying suburban Nashville prices with a dock.

No State Income Tax: The Compounding Advantage

Tennessee's zero income tax on wages and retirement distributions is not just a retirement benefit — it affects every buyer who is still working. A household earning $200,000/year relocating to Old Hickory Lake from a state with a 5–7% state income tax saves $10,000–$14,000/year in state income taxes. Spread over a decade, that is $100,000–$140,000 in taxes not paid. Even if Nashville-area property taxes are slightly higher than some rural lake markets, the income tax savings on working income significantly exceeds the difference for most households. The math improves even further in retirement when income distributions from 401(k)s and IRAs are fully exempt from TN state tax. This is the financial foundation that has driven Middle Tennessee's population growth and the Old Hickory Lake market's strength.