Michigan Property Tax Appeal Deadline 2026: Key Dates and How to File
TL;DR
The Michigan property tax appeal deadline for 2026 is March Board of Review meets in early March 2026 (typically the second Monday). File your protest before or during the session.. File Petition to the Board of Review (Form L-4035 or local form) with your Local Board of Review (city/township). July Board of Review meets for specific correction items (principal residence, clerical errors). December Board for similar limited corrections.. The valuation date is December 31, 2025 (for 2026 tax year), and notices are typically available Assessment change notices mailed by February in most municipalities. Do not miss this deadline, as late filings are generally not accepted.
Missing your property tax appeal deadline means paying whatever the assessor decided you owe for the entire year. In Michigan, where the average effective rate is 1.54% and the typical homeowner pays $3,234 annually on a $210,000 home, that can mean hundreds or thousands of dollars in unnecessary taxes.
Here are all the dates you need to know for 2026.
2026 Michigan Property Tax Appeal Timeline
| Event | Date |
|---|---|
| Valuation date | December 31, 2025 (for 2026 tax year) |
| Assessment notices available | Assessment change notices mailed by February in most municipalities |
| Appeal filing deadline | March Board of Review meets in early March 2026 (typically the second Monday). File your protest before or during the session. |
How to File Your Appeal Before the Deadline
Step 1: Review Your Assessment
As soon as you receive your assessment notice or it becomes available online, review it carefully. Check the property details (square footage, lot size, bedrooms, bathrooms, condition) and the assessed value. Compare your value to recent sales of similar homes in your area.
Step 2: Gather Evidence
Before the deadline, collect:
- Comparable sales: 3-5 similar homes that sold for less than your assessed value near the valuation date (December 31, 2025 (for 2026 tax year))
- Property condition documentation: Photos, repair estimates, and notes on anything that reduces your value
- Equity comparisons: Similar properties in your area that are assessed lower than yours
- An independent appraisal if available
Step 3: File Petition to the Board of Review (Form L-4035 or local form)
Submit your appeal to the Local Board of Review (city/township) before the deadline. In most Michigan counties, you can file by mail, in person, or online. Include your evidence or a summary of why you believe your assessment is too high.
Step 4: Attend Your Hearing
Informal review: Contact your assessor before the Board of Review to discuss your value.
Formal hearing: March Board of Review hearing. Present evidence..
Step 5: Further Appeals
If the initial appeal does not produce a satisfactory result, you can escalate to Michigan Tax Tribunal (Small Claims or Entire Tribunal). Each level has its own deadline, so act quickly.
County-Specific Deadlines and Notes
Wayne County (Detroit)
Largest county. Each city and township has its own Board of Review. Check your municipality specific dates.
Oakland County
Suburban Detroit. High-value properties make appeals worthwhile.
Macomb County
Northeast Detroit suburbs. File with your local municipality Board of Review.
Kent County (Grand Rapids)
West Michigan hub. Growing market with rising assessments.
Washtenaw County (Ann Arbor)
University of Michigan drives high values. Check your municipality deadline.
What Happens If You Miss the Deadline?
In most cases, missing the appeal deadline means you cannot challenge your assessment for that tax year. You will have to wait until next year. There are limited exceptions for late filings in some jurisdictions, but do not count on them. Mark the deadline on your calendar now.
How PropertyTaxFight Can Help You Meet the Deadline
The biggest reason people miss the deadline is not procrastination. It is the time it takes to gather comparable sales, organize evidence, and figure out the filing process. PropertyTaxFight does all of this for you in minutes for $79. You get a complete evidence packet with comparable sales, equity analysis, and step-by-step filing instructions specific to your county. No research, no guesswork.
For a complete walkthrough of the Michigan appeal process, see our Michigan property tax appeal guide.
Frequently Asked Questions
When is the Michigan property tax appeal deadline for 2026?
The deadline is March Board of Review meets in early March 2026 (typically the second Monday). File your protest before or during the session.. July Board of Review meets for specific correction items (principal residence, clerical errors). December Board for similar limited corrections..
Can I file a late property tax appeal in Michigan?
Generally, no. Michigan has strict appeal deadlines. Some jurisdictions allow late filings in very limited circumstances (such as failure to receive a required notice), but this is not guaranteed. File on time.
What form do I need to file?
You need to file Petition to the Board of Review (Form L-4035 or local form) with your Local Board of Review (city/township). Most county assessor websites have the form available for download.
How long does the appeal process take after filing?
The initial hearing is typically scheduled within 1-3 months of filing. The entire process from filing to resolution usually takes 2-6 months, depending on the county and the level of appeal.
Is there a fee to file a property tax appeal in Michigan?
The initial filing is free in most jurisdictions. Fees may apply at higher levels of appeal (such as court filings).
Do Not Wait
The deadline is March Board of Review meets in early March 2026 (typically the second Monday). File your protest before or during the session.. Start gathering your evidence now. Use PropertyTaxFight to build your case and file a strong appeal before the deadline passes.