Updated 2026 · Based on median market data for Knoxville, TN
The effective property tax rate in Knoxville, TN is 0.55%. On the median home price of $355,000, that is an annual tax bill of approximately $1,953 — or $163/mo. This is among the lowest rates in the country, providing a substantial cash flow advantage over high-tax states. Investors relocating capital from states like Texas (1.8%), New Jersey (2.2%), or Illinois (2.1%) will find a dramatic improvement in net operating income.
Property taxes consume 9.5% of gross rental income in Knoxville. At under 10% of gross rent, taxes are a minor expense that leaves plenty of room for cash flow. This is a significant advantage over high-tax markets where taxes can eat 20-25% of gross rent. Without property taxes, the cap rate would be 4.71% — the 0.55% tax rate reduces it to 4.16%, a drag of 0.55 percentage points. That means taxes cost you $1,953 in annual cash flow per property.
Property tax bills are based on assessed value, which may differ from market value. In many jurisdictions, assessed values lag behind market prices, meaning your actual tax bill after purchase could increase once the property is reassessed at your purchase price. In TN, check whether purchases trigger automatic reassessment — if so, budget for taxes based on your actual purchase price, not the seller's current bill. Some sellers enjoy a lower assessed value locked in from years ago, and the assessment can jump 20-50% upon transfer. Also investigate whether TN offers homestead exemptions that landlords would NOT qualify for, as this could increase your effective rate above the 0.55% median. Request the actual tax bill from the seller or county assessor before closing — never rely solely on listing-reported taxes. Finally, investment properties are sometimes assessed at a different ratio than owner-occupied homes, which can add another layer of expense.
With a relatively low tax rate of 0.55%, Knoxville's tax environment is already investor-friendly. Focus your optimization efforts on the other expense categories — insurance, maintenance, and vacancy management — where there is more room to improve returns. Regardless of rate, always verify the assessed value matches reality. File an appeal within 30-60 days of your assessment notice if you believe it is too high. The cost of an appeal is typically zero for an informal hearing, and the potential savings compound over every year you own the property.
Rental property investors in Knoxville can offset taxes through two powerful deductions. First, depreciation: the IRS allows you to depreciate the building portion of your property (roughly 80% of the purchase price for a typical single-family rental) over 27.5 years. On a $355,000 property, that is approximately $10,327/yr in paper losses that offset your rental income — meaning you pay taxes on $10,327 less income each year without spending a dollar. Second, mortgage interest: on an 80% LTV loan at 7%, your first-year interest expense is approximately $19,880, all of which is deductible against rental income. Combined, these deductions total roughly $30,207/yr. In the 25% tax bracket, that saves you $7,552/yr in actual taxes. In the 32% bracket, the savings reach $9,666/yr. These deductions frequently create a paper loss on properties that are cash-flow positive, reducing your overall tax liability.
If Knoxville property values continue appreciating at 3.5% annually and the tax rate stays at 0.55%, your annual property tax bill will rise as the assessed value increases. Starting from a $355,000 purchase: Year 1 tax is $1,953. By Year 2, a reassessment to $367,425 would push taxes to approximately $2,021. Year 3 at $380,285: taxes reach $2,092. By Year 5 at $407,371: taxes climb to $2,241 — an increase of $288/yr over your initial bill. In a moderate appreciation environment, tax increases are manageable at $288 over 5 years. Some states cap annual assessment increases for existing owners — research whether TN offers this protection.
The true after-tax return on a Knoxville rental is significantly better than the pre-tax numbers suggest, thanks to the depreciation tax shield. Consider a $355,000 property with NOI of $14,774. Pre-tax, that is a 4.16% cap rate. But after applying $10,327 in annual depreciation and approximately $19,880 in mortgage interest deductions (80% LTV at 7%), your taxable income from this property is just $-15,433 — actually a paper loss of $15,433 that you can deduct against other income (subject to passive activity rules). For an investor in the 25% bracket, the tax savings from depreciation alone add approximately $2,582/yr to your effective return. When you combine actual cash flow with the tax shield benefit, the after-tax cash-on-cash return improves by roughly 2-3 percentage points over the pre-tax figure. This is one of real estate's most powerful advantages over stocks and bonds.
Knoxville vs Tennessee state average and national average across key investment metrics. Knoxville outperforms both benchmarks on cap rate.