READING YOUR TAX BILL

How to Read Your Commercial Property Tax Bill

A practical, line-by-line walkthrough of commercial tax bills in Michigan, Ohio, and Indiana. If you sign the check, you should be able to read what you're paying for — and spot what shouldn't be there.

3 States

Distinct bill formats across MI, OH, and IN

12+ Lines

Typical line items on a commercial bill to verify

Gross vs. Net

Credits and reductions change what you actually owe

THE STARTING POINT

What's Actually on a Commercial Property Tax Bill

A commercial tax bill is not a single number — it is a stack of line items pulled together from county, township, school, municipal, and special-purpose taxing units, each with its own millage rate and its own statutory basis. The bill format reflects the state. Michigan owners receive a summer bill and a winter bill, each carrying a different mix of taxing units. Ohio owners receive a full-year bill from the county auditor split into two installments, with reduction factors and rollbacks applied as credits. Indiana owners receive a Form TS-1 from the county treasurer for spring and fall installments, with a separate circuit breaker credit line driven by the property class.

In every state, the bill walks from gross to net. Gross tax is the value the millage applies against, before any credits. Subtractions follow — rollback factors, homestead and owner-occupied credits (rarely available on commercial property), abatement certificates like Michigan's IFE, and the circuit breaker in Indiana. What remains is the net tax owed, and that is the figure your CFO or controller actually cuts a check against.

Reading the bill matters because most errors hide in the middle — a special assessment for a parcel two doors down, an expired abatement still showing as zeroed, an outdated PRE flag, or a school district code that puts you on the wrong levy. Pair this guide with our explainer on rising commercial taxes so increases you find here trace back to causes you can act on.

Multiple taxing units stack on one bill — each with its own millage and authority

Gross tax flows down to net tax through credits, rollbacks, and caps

Errors usually live in mid-bill line items, not the top-line value

The bill format is state-specific — MI, OH, and IN look meaningfully different

Before you dissect line items, make sure the underlying assessment is sound — start with our assessment vs. market value guide or request a free property tax review.

Commercial property owner reviewing a property tax bill line by line

STATE BY STATE

How Commercial Tax Bills Are Structured in MI, OH & IN

Michigan: Summer bill (July) and winter bill (December). Separate millage from county allocated, county SET, township, school operating, State Education Tax, and any special assessments. PRE/PPE markers and IFE abatements show as line adjustments.

Ohio: Full-year billing in two installments from the county auditor. Inside (10-mill) millage, outside (voted) millage, school operating, fire, EMS, library, and sub-district levies. HB 920 reduction factors and rollback credits appear as separate lines.

Indiana: Form TS-1 from the county treasurer, spring and fall installments. Gross AV, deductions (homestead and others — commercial usually ineligible), AV after deductions, tax rate, gross tax, circuit breaker credit, and net tax due.

Same Logic, Different Layouts

Every bill resolves to gross tax minus credits equals net tax — knowing where each state hides the credits is half the battle.

WHAT TO CHECK

Line Items Every Commercial Owner Should Verify

Walk through your bill with this list in hand. Each item is a place where commercial owners routinely find errors or recoverable overpayments. If anything looks off, our appeal process guide and 2026 deadlines guide explain what to do next.

Parcel ID, legal description, and property class — wrong class = wrong rate

Assessed value vs. taxable value (MI) and any uncapping since last sale

Each taxing unit and its millage, totaled and matched against published rates

Special assessments — sewer, drain, lighting, DDA, paving — billed to your parcel

Abatement / IFE / TIF certificate line items applying the correct exemption

Ohio rollback and reduction factor credits applied where eligible

Indiana circuit breaker credit calculated against the right property class

Prior installment balance, penalty, and interest carried forward (or not)

STEP BY STEP

How to Dissect Your Tax Bill in 5 Steps

Pull the bill, the most recent assessment notice, and the property record card. Then work top to bottom.

Confirm Parcel and Property Class

Match the parcel ID, legal description, school district, and property class against the property record card. A misclassified parcel ends up on the wrong levy schedule and the wrong millage stack from day one.

Reconcile Values to Your Notice

Verify that the assessed value, taxable value, and any deductions on the bill match what was on your assessment notice. In Michigan, check whether taxable value has uncapped following a sale or transfer of ownership.

Walk Each Millage and Special Assessment

Total the millage line by line and compare against the published rates from your county or township. Question any special assessment you don't recognize — these are typically separate from valuation appeals and have short protest windows.

Verify Credits, Rollbacks, and Caps

Confirm Ohio rollback and reduction factor credits are present where applicable, and that the Indiana circuit breaker credit is calculated against the right property class. The Indiana tax cap rules are commonly misapplied on mixed-use parcels.

Decide: Pay, Correct, or Appeal

Clerical and classification errors usually go back to the assessor or auditor outside the appeal track. Valuation disputes require an appeal within the statutory window — see our appeal process guide or request a free review.

REVIEW VS. AUTOPAY

Carefully Reviewing the Bill vs. Just Paying It

Review the Bill Line by Line

Catch clerical and classification errors before they compound

Spot special assessments and abatement misapplications

Identify whether a valuation appeal is worth filing this year

Build a paper trail that strengthens future appeals and refinancings

Reconcile bill against closing-statement proration on recent acquisitions

Just Pay What the Auditor Sent

Errors stay on the roll and replicate into next year's bill

Missed special-assessment protest windows close permanently

Expired abatements continue costing money quietly

Inflated values become the new baseline for future increases

NNN tenants are stuck paying through reconciliation without recourse

Assessed value is the figure the assessor places on the roll — Michigan's State Equalized Value (50% of true cash value), Ohio's 35% taxable value derived from full market value, or Indiana's 100% market value-in-use. Taxable value is what the millage rate actually multiplies against, and in Michigan it can be lower than SEV because Proposal A caps annual taxable value increases until the property sells. Many commercial owners look only at one of the two numbers and miss the real story — for a fuller breakdown, see our assessed value vs. market value guide and the Michigan uncapping explainer.

Michigan sends a summer bill (usually mailed July 1) and a winter bill (usually mailed December 1), with each bill carrying its own mix of taxing units. The summer bill typically funds school operating, the State Education Tax (SET), county allocated millage, and any community college or intermediate school district levies, while the winter bill carries county extra-voted, township, library, and most local special assessments. If your property qualifies for Principal Residence Exemption it appears as a PRE/PPE marker that zeroes out the school operating portion, but commercial property almost never qualifies. The two-bill structure is also why Michigan's deadlines feel busier than other states — a missed summer payment accrues interest separately from any winter issues.

Ohio bills issued by the county auditor show a gross tax figure based on full millage applied to taxable value, then apply a reduction factor under House Bill 920 that adjusts voted millage downward as values rise, so existing voted levies generate roughly the same dollars year to year. You may also see a 10% non-business credit and a 2.5% owner-occupied credit on residential property — commercial property generally does not qualify for either, which is why commercial bills frequently look noticeably higher than nearby residential parcels even when assessed values are comparable. The net tax line after these credits is what you actually owe. For background on how Ohio cycles values, see the Ohio property tax overview and our guide to why taxes keep rising.

Indiana's constitutional circuit breaker caps property tax liability at a percentage of gross assessed value — 1% for homesteads, 2% for other residential and agricultural land, and 3% for commercial and industrial property. The bill shows your gross tax, then a circuit breaker credit on a separate line that brings you down to the cap, with net tax owed at the bottom. For many commercial owners in higher-millage counties, the credit is substantial, and a successful appeal that lowers gross assessed value can shrink it because the cap is computed against a smaller base. Our Indiana tax caps guide explains the interaction in detail.

Property tax dollars are millage multiplied by taxable value, so the bill can jump even when published millage rates are flat because the assessed and taxable values went up. In Ohio, that upward pressure usually shows during a six-year reappraisal or three-year update, while in Indiana annual trending factors lift gross assessed value most years. In Michigan the bigger jolt comes from uncapping after a sale, when taxable value snaps from the capped figure to the full assessed value. Our explainer on why commercial property taxes keep increasing walks through each driver, and a free review tells you whether the underlying value is defensible.

A special assessment is a charge for a specific local improvement — a sewer extension, a road paving project, a downtown development authority levy, a lighting district, or a drain assessment — that benefits your parcel directly rather than funding general services. It appears as its own line, often on the winter bill in Michigan or as a separate sub-district levy in Ohio, and the dollar amount is usually based on frontage, acreage, or unit count instead of value. Special assessments are generally not appealable through the same tribunal or board that hears valuation appeals — they have their own protest windows that close quickly — so flagging a surprising special assessment is exactly the kind of catch a careful bill review produces. See the property tax appeal process guide for what is and isn't appealable.

Errors on commercial bills are more common than people assume — wrong square footage, wrong land class, wrong school district, outdated PRE or exemption flags, an abatement or IFE certificate that wasn't applied, or a special assessment billed to the wrong parcel. Start by pulling the property record card from the assessor or auditor and reconciling every figure on the bill against the record card, your last assessment notice, and any abatement paperwork you hold. Clerical errors are usually correctable outside the formal appeal track, while valuation errors require the standard appeal route — see our 2026 deadlines guide for those windows, and the proration guide if the disputed bill straddles a recent closing.

RELATED RESOURCES

More Commercial Property Tax Guides

Why Commercial Property Taxes Keep Increasing — The drivers behind rising bills

Assessed Value vs. Market Value — Where over-assessment hides

2026 Property Tax Appeal Deadlines — MI, IN, and OH filing dates

How to Appeal Commercial Property Taxes — Step-by-step appeal guide

Property Tax Proration at Closing — Bills that straddle a sale

Indiana Tax Caps — How the circuit breaker credit works

Found Something Off on Your Tax Bill?

Send us your latest bill and most recent assessment notice. We'll review it for free and tell you whether the issue is correctable, appealable, or both.