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Operated by Polter Law Group

PROPERTY TAX GRIEVANCE

Property Tax Grievance for Commercial Owners

A property tax grievance is the formal process of contesting an over-assessment — and if you own commercial property in Michigan, Indiana, or Ohio, the procedure goes by a different name in each state. Here's what a grievance actually is, how the language maps to the real forums in MI, IN, and OH, and how to file one before your window closes.

See How to File

Mar 31

Ohio BOR complaint deadline

May 31

Michigan Tax Tribunal deadline

45 days

Indiana — from Form 11 notice

WHAT IT IS

What "Property Tax Grievance" Actually Means in MI, IN, and OH

"Property tax grievance" is the language most owners from New York, Massachusetts, and other Northeast states use to describe a formal challenge to a tax assessment. The concept travels — Michigan, Indiana, and Ohio all have a binding statutory process for contesting assessed value — but the labels and forums change at every border. If you're searching for "property tax grievance" on a Midwest commercial property, this is the page that translates.

In Michigan, the grievance starts at the local Board of Review in March and escalates to the Michigan Tax Tribunal by May 31 for commercial properties. In Ohio, the same idea is called a "complaint against valuation" — filed on DTE Form 1 with the county Board of Revision by March 31 (our Ohio complaint process page walks through it). In Indiana, the grievance is a Form 130 appeal to the county PTABOA, filed within 45 days of your annual Form 11 notice.

The procedural names matter because the forums apply different evidence rules, different burdens of proof, and different escalation paths. A grievance filed on the wrong form, in the wrong window, or with the wrong body is functionally a missed appeal. The good news: the underlying logic — show the board a defensible market value lower than the assessor's number — is the same everywhere.

Michigan: BOR (March) + Tax Tribunal by May 31

Ohio: DTE Form 1 with county BOR by March 31

Indiana: Form 130 with PTABOA, 45 days from Form 11

Same idea, different name and forum in each state

Not sure which state's grievance procedure applies to your property? Request a free review and we'll map the right forum, deadline, and form to your asset.
EPTA team mapping property tax grievance procedures across Michigan, Indiana, and Ohio

THREE STATES, THREE PROCEDURES

How Grievance Works in Each State We Cover

Michigan — Local Board of Review hearings open in March; Tax Tribunal petitions for commercial property are due May 31.

Ohio — File DTE Form 1 'Complaint Against Valuation' with the county Board of Revision by March 31.

Indiana — File Form 130 with the county PTABOA within 45 days of your annual Form 11 assessment notice.

One firm, three procedures

EPTA practices in every forum above — and coordinates portfolio grievances under one engagement.

GROUNDS

What You Can Actually Grieve

A grievance has to rest on a recognized statutory ground — boards and tribunals dismiss filings that just say "my taxes are too high." These are the grounds commercial owners use most often, in roughly the order they show up on our caseload. Each ground controls what evidence the board will accept; pick carefully. For background on how assessors arrive at the number in the first place, read how assessors value commercial property.

Over-assessment — assessed value exceeds defensible market value backed by income, sales, or cost analysis.

Unequal assessment — your property is valued higher than comparable properties in the same class and submarket.

Incorrect classification — commercial when industrial applies (or vice versa), putting the property on the wrong millage rate.

Exemption or abatement denied or removed — PA 198 IFT, CRA, ERA, charitable, or other exemption status revoked without basis.

Improper inclusion of non-taxable items — leasehold improvements, intangible business value, or personal property booked as real property.

Functional or economic obsolescence ignored — vacancy, deferred maintenance, or market shifts the mass-appraisal model didn't see.

Indiana trending or Ohio triennial reset overshoot — automatic value increases that outran actual submarket movement.

HOW TO FILE

How to File a Property Tax Grievance

The steps below describe the operational sequence for a commercial grievance in any of the three states we serve. The forum changes, the form changes, the deadline changes — but the work in each step is broadly the same. The full tactical playbook lives in lower business property taxes and our appeal process guide.

01

Diagnose & Pick a Ground

Pull the tax card, classification code, and three years of assessment history. Decide whether the grievance rests on over-assessment, unequal assessment, classification, or an exemption issue. The ground you pick controls the evidence the board will accept — see the grounds checklist above and our assessor methodology resource for context.

02

Build the Evidence Package

Assemble income and expense statements, current rent roll, three to five recent comparable sales, condition photos, and a defensible cap rate. For Indiana, also pull tax cap interaction notes so the board sees the full picture. Strong grievances attack at least two valuation approaches.

03

File in the Right Forum

Michigan: Board of Review in March and/or a Tax Tribunal petition by May 31. Ohio: DTE Form 1 with the county Board of Revision by March 31. Indiana: Form 130 with the county PTABOA within 45 days of the Form 11. Wrong form, wrong forum, or wrong window = missed appeal.

04

Negotiate, Then Hearing

Most grievances resolve in pre-hearing negotiation with the assessor or county once the evidence package is on the table. The cases that don't proceed to a contested hearing — Michigan Tax Tribunal, Ohio BOR (with appeal rights to the BTA), or Indiana PTABOA — where a clean evidence package built in step two carries the day. See what happens at a tax tribunal hearing for the room dynamic.

WHY THE FRAMING MATTERS

Grievance Is a Statutory Right — Use It

A property tax grievance isn't a favor the assessor grants or a courtesy review they can decline. It's a statutory right anchored in each state's tax code — Michigan's Tax Tribunal Act (MCL 205.735a), Ohio Revised Code Chapter 5715, and Indiana Code 6-1.1-15. The board has to hear you, has to apply the same evidence rules to the assessor that it applies to you, and has to issue a written decision.

For commercial owners coming from New York, Massachusetts, or other "grievance" states, the takeaway is simple: the procedural muscle memory translates. The deadlines, forms, and forum names change, but the underlying right — to put your valuation on the record and force a defensible market number — is the same. Most owners just need a guide who knows which door to walk through in each state. Our partnership with Polter Law Group gives every grievance access to in-house counsel if the case has to escalate.

Backed by

Polter Law Group

Ohio partner

Sleggs, Danzinger & Gill
Commercial property owner discussing tax grievance strategy with EPTA team

A property tax grievance is a statutory right, not a polite request — when the evidence is built right, the board has to engage with the number.

A property tax grievance is the formal, statutory process for contesting your assessment — it produces a binding decision from a board or tribunal, creates a record, and resets your taxable value if you win. An informal review is an off-the-record conversation with an assessor that may adjust the number for the current year but doesn't bind the next assessment cycle. For commercial owners, the grievance is almost always the right path because the dollars at stake justify the formal record. Our appeal process walkthrough and the broader appeal process resource cover both routes in detail.
The concept is identical — challenging an over-assessment in a formal proceeding — but the names and forums are different. In Michigan, the grievance starts at the local Board of Review in March and escalates to the Michigan Tax Tribunal by May 31. In Ohio, you file a DTE Form 1 "Complaint Against Valuation" with your county Board of Revision by March 31. In Indiana, the equivalent is a Form 130 filed with the county PTABOA within 45 days of your Form 11 notice. EPTA practices across all three and adapts the playbook to each.
Four grounds cover the vast majority of successful commercial grievances: (1) over-assessment — assessed value exceeds defensible market value; (2) unequal assessment — your property is assessed higher than similar properties in the same class; (3) incorrect classification — the property is tagged commercial when it should be industrial, or vice versa, putting it on the wrong millage; and (4) denial or improper removal of an exemption or abatement. Pinning the grievance to a specific statutory ground sharpens the case and controls what evidence the board will accept. See our appeal process guide for how grounds map to evidence.
The owner of record is always eligible. In Ohio, school districts and other taxing authorities may also file counter-complaints under DTE Form 1 — which is why aggressive valuation cases sometimes draw a formal response from the school board. In Michigan and Indiana, the grievance right belongs to the owner, though net-lease tenants contractually responsible for the tax bill often coordinate with the owner to file. EPTA frequently represents owners whose NNN tenants directly benefit from a reduction, and we work with both sides where appropriate.
Boards and tribunals respond to three valuation approaches — income, sales comparison, and cost — and the strongest grievances attack at least two simultaneously. Pull two to three years of income and expense statements, a current rent roll, three to five recent sales of properties that genuinely match yours by size, age, use, and submarket, photos of any obsolescence or deferred maintenance, and a defensible cap rate derived from the local submarket. A separate independent appraisal is helpful in close cases but not required. Our tactical playbook breaks down how to structure the package by valuation approach.
No. Assessors don't retaliate against grievants; they reassess every year (every three years on a triennial cycle in Ohio) using the same mass-appraisal models regardless of who filed last year. If your grievance succeeds, your reduced value typically becomes the new baseline that protects you in future cycles. The only situations where a follow-up looks aggressive are independent triggers: a Michigan uncapping after sale, an Ohio triennial reset, or a major capital improvement. Our fight a property tax increase page explains how to react when those triggers hit.
Every state allows owners to file pro se, and small, obvious over-assessments sometimes resolve fine that way. But commercial grievances rarely behave like that — the assessor's side is represented by experienced staff, evidence rules at the Tax Tribunal, BOR, and PTABOA are stricter than most owners expect, and the income-approach math is unforgiving. For any property with five-figure annual tax exposure, the contingency math almost always favors retaining a specialist. Read what a commercial property tax consultant does and how we reduce commercial tax bills before deciding.
Commercial property tax appeal background

READY TO GRIEVE YOUR ASSESSMENT?

File the Right Grievance in the Right Forum

Send us your assessment. We'll tell you which grievance procedure applies, which grounds your case rests on, and the realistic reduction range — at no cost.

Contingency only. No retainer. We earn nothing unless your tax bill drops.

Free review. No fee unless we reduce your taxes.

Capitol building representing the statutory authority behind property tax grievances