If Michigan has over-valued your home, you overpay property tax every year until you fix it. Filing an appeal is a standard, homeowner-friendly process — here is exactly how it works in Michigan, including the deadline, the governing law, and the five steps to file.
The Michigan deadline
The appeal window in Michigan is typically February - March, and the filing deadline is March (local Board of Review); protest required to appeal further. Miss it and you generally wait a full year, so check your assessment notice the moment it arrives. See the national deadline calendar for how this compares.
How Michigan values your home
Michigan taxes only 50% of your home's market value (its assessment ratio), so an assessment notice showing $100,000 implies a market value of $200,000. Convert the notice to an implied market value before deciding whether to appeal. Michigan assesses property at 50% of true cash (market) value, while Proposal A caps annual taxable value growth at the lesser of inflation or 5%. The process is authorized under Mich. Comp. Laws § 211.30 (board of review).
How to appeal your property taxes in Michigan
Step 1. Review the Notice of Assessment showing state equalized value and taxable value.
Step 2. Protest to the local March Board of Review (required before higher appeals).
Step 3. Present comparable sales showing true cash value is overstated.
Step 4. Appeal residential property to the Michigan Tax Tribunal by July 31.
Step 5. Provide your evidence at the Tax Tribunal hearing.
Build your evidence
The strongest case is a tight set of comparable sales — 3 to 5 similar homes near you that sold for less than your assessed value — plus any property-record errors you can document. You can also make an unequal-assessment argument if comparable homes are assessed for less than yours.
Don't forget exemptions
An appeal lowers your value, but a homestead exemption cuts your taxable base directly — and the two stack. Confirm you're enrolled with your county before you file.
The shortcut
Checking comps and building the packet is where most homeowners give up. TaxAppealAgent does it for you: check your Michigan property for $4.99 (credited), and if you're over-assessed we assemble the comparable-sales evidence and a Michigan-specific appeal letter for a flat $29. You file it and keep 100% of the savings. See the full Michigan appeal guide.