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Franklin Property Taxes and Your Monthly Budget TL;DR: Franklin property taxes are calculated by multiplying your home's appraised value (after adjustme...
TL;DR: Franklin property taxes are calculated by multiplying your home's appraised value (after adjustments) by the local tax rate. Understanding how the Williamson County Assessor determines that value—and when reassessments happen—helps you plan your household budget with confidence.
Every property tax bill in Franklin begins with a single number: your home's appraised value as determined by the Williamson County Property Assessor. This isn't the price you paid or what Zillow says your home is worth. It's an independent assessment conducted by the county.
Tennessee reassesses residential properties on a four-year cycle. Williamson County's most recent reappraisal took effect in 2024, which means the assessed values on your 2025 and 2026 tax bills reflect that cycle's findings.
Between reappraisal years, your appraised value generally stays the same unless you've made significant improvements—like adding a garage, finishing a basement, or building an addition.
This is where people's eyes tend to glaze over, but it's worth a minute of your time. Tennessee uses a formula that taxes only a percentage of your home's appraised value, not the full amount.
For residential property, the assessed value is 25% of the appraised value. That's set by state law, not by your county or city.
So if the assessor determines your Franklin home is worth $600,000, your assessed value is $150,000. That $150,000 figure is what the tax rate applies to.
| Step | Example | |---|---| | Appraised value (set by assessor) | $600,000 | | Assessment ratio (residential) | 25% | | Assessed value | $150,000 | | Combined tax rate (per $100) | ~$1.35* | | Approximate annual tax | ~$2,025 |
Combined rates vary depending on whether you're inside Franklin city limits or only in unincorporated Williamson County. The figures above are for illustration—your actual rate may differ.
Your property tax payment doesn't go to one place. It's split among multiple taxing authorities, and the breakdown matters if you want to understand why rates shift over time.
In Franklin, your combined rate typically includes:
School funding makes up the largest share of most property tax bills in Williamson County. As Franklin and the surrounding communities have grown, school construction and staffing needs have driven much of the conversation around tax rates in recent years.
If your home sits just outside Franklin's city limits—in areas like Arrington, Thompson's Station, or unincorporated parts of the county—you won't pay the city portion, which lowers your overall rate.
Franklin's population growth is one of the most visible forces shaping property taxes in the area. More residents mean more demand for roads, parks, schools, fire stations, and other services.
When the county conducts a reappraisal and property values go up across the board, Tennessee law requires a certified tax rate calculation. This is the rate that would generate the same total revenue as the previous year, adjusted for the new values. It's designed to prevent a windfall for the government just because home values climbed.
Local governing bodies can then choose to adopt the certified rate, go lower, or exceed it. If they exceed it, they're required to hold public hearings and vote. This process plays out in the summer months before your fall tax bill arrives.
Watching those public hearings—especially the Williamson County Commission and the Franklin Board of Mayor and Aldermen meetings—gives you real insight into where your money is headed. Agendas and meeting schedules are posted on the Williamson County government website.
Tennessee offers a couple of property tax relief programs that many homeowners overlook:
Tax Relief for Elderly or Disabled Homeowners — If you're 65 or older, or permanently disabled, and meet income requirements, the state reimburses a portion of your property taxes. You still pay the bill upfront, but you receive a refund.
Disabled Veteran Exemption — Qualifying veterans may receive a full or partial property tax exemption on their primary residence, depending on their disability rating.
Both programs require an application through the Williamson County Trustee's office. If you think you might qualify, it's worth a phone call—especially before your next payment is due.
The Williamson County Property Assessor's office lets you look up your property's appraised value online at any time. Pulling up your record takes about thirty seconds.
If the number seems off—maybe comparable homes on your street are valued lower, or the assessor's records show a finished basement you don't actually have—you can file an informal review or a formal appeal. The appeal window typically opens right after new values are published, and the deadline is firm.
Most homeowners in Franklin never check. Those who do sometimes find errors that save them real money, year after year, for the rest of that reappraisal cycle.