⏰ Don't Miss Your Deadline
Property tax appeal deadlines are strict. If you miss the informal review window, you'll have to wait for the formal appeal process, which takes significantly longer. Start early to ensure you have time to gather evidence.
Tennessee property tax appeals follow a specific timeline each year. This guide covers all the key deadlines for 2026, with specific information for Davidson County (Nashville) and Williamson County (Franklin/Brentwood).
2026 Property Tax Appeal Timeline
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Overview of the Appeal Process
Tennessee's property tax appeal process has two main phases:
Phase 1: Informal Review (Best Option)
The informal review is a paper-based process where you submit evidence to the county assessor. No hearing is required—the assessor reviews your materials and makes a decision.
- Fastest resolution: Typically 4-8 weeks
- No hearing required: Everything is done via written submission
- Highest success rate: Most successful appeals are resolved at this stage
- Limited window: Usually January through mid-April
Phase 2: Formal Appeal (If Needed)
If your informal review is denied (or if you miss the informal deadline), you can file a formal appeal with the County Board of Equalization.
- Requires a hearing: You must present your case in person
- Longer timeline: Can take 6-12 months
- Additional option: State Board appeal if County Board denies
💡 Why Informal Review Is Better
The informal review is faster, easier, and doesn't require you to attend a hearing. We strongly recommend filing during the informal review window whenever possible.
Davidson County (Nashville) Deadlines Nashville
Informal Review Window
Now OpenThis is your best opportunity to appeal. Submit your evidence to the Metro Nashville Property Assessor during this window for the fastest resolution.
Informal Review Decisions
UpcomingThe assessor's office reviews submissions and issues decisions. You'll receive written notification of the outcome.
County Board of Equalization
UpcomingFormal appeals to the County Board. Required if informal review is denied and you wish to continue your appeal.
State Board Appeals
UpcomingFinal appeal option if County Board denies your case. Must be filed within 30 days of County Board decision.
Contact: Metro Nashville Property Assessor
700 2nd Avenue South, Suite 210, Nashville, TN 37210
Phone: (615) 862-6080
Williamson County Deadlines Franklin • Brentwood
Informal Review Window
Now OpenContact the Williamson County Property Assessor for exact dates. Submit your appeal early to ensure adequate review time.
Informal Review Decisions
UpcomingDecisions are issued in writing. If successful, your assessed value will be adjusted.
County Board of Equalization
UpcomingFormal hearing process for appeals not resolved through informal review.
Contact: Williamson County Property Assessor
1320 West Main Street, Suite 300, Franklin, TN 37064
Phone: (615) 790-5708
Other Tennessee Counties
While the general timeline is similar across Tennessee, exact dates can vary by county. Here's the typical schedule:
Typical Informal Review Window
Most Tennessee counties open their informal review window in January and close it by mid-April. Contact your county assessor for specific dates.
County Board of Equalization
Formal appeals are heard by each county's Board of Equalization during the summer months.
Find Your County Assessor
To get exact deadlines for your county, contact your local Property Assessor's office. The Tennessee Comptroller maintains a directory of all county assessors:
What to Do Now
With the informal review window now open for 2026, here's your action plan:
Step 1: Check Your Assessment (This Week)
- Review your current assessed value on your county's website
- Compare to recent sales in your neighborhood
- Note any errors in your property record
Step 2: Gather Evidence (Next 2-4 Weeks)
- Research comparable sales
- Document any property condition issues
- Collect photos and supporting materials
Step 3: File Your Appeal (Before Deadline)
- Submit your evidence to the county assessor
- Keep copies of everything you submit
- Note the date you filed
💡 Pro Tip: File Early
Don't wait until the last week. Filing early gives you time to supplement your appeal if needed and ensures the assessor has adequate time to review your case.
Don't Miss Your Deadline
The informal review window is open NOW. Let our experts handle your appeal while you still have time.
Get Started – $0 UpfrontNeed Help?
Property tax appeals have strict deadlines and require strong evidence. If you're not sure whether to appeal or need help preparing your case, TN.tax can help.
- Free evaluation: We'll analyze your property and tell you if an appeal makes sense
- Full service: We handle everything—research, evidence, filing—so you don't miss deadlines
- No risk: With our Full Service Appeal, you pay nothing unless we save you money
Get your free evaluation today to see your savings potential before the deadline passes.