Follow the default numbers.
With market / assessed value of $350,000, the model gives estimated annual property tax: $6,300.
The formula is taxable bases × applicable millage ÷ 1,000 − approved bill credits + fixed charges. Open the breakdown to trace expenses and assumptions. Change one input at a time to see how your decision changes. This example uses scenario inputs; it is not an offer, tax bill, appraisal or legal determination.
Michigan uses taxable value, not the asking price
A Michigan assessment notice separates assessed value, state equalized value (SEV) and taxable value. The tax multiplication uses taxable value. The 50% market-value conversion in this calculator is an assessment scenario; it is not evidence that a particular parcel will be assessed at exactly half its purchase price. Enter the certified taxable value to replace that conversion. The market-value input remains useful for showing tax as a percentage of property value, but it does not override the assessor’s records.
Buying a property can change next year’s taxable value
A prior owner’s taxable value may be below SEV because annual growth has been capped. A qualifying ownership transfer can uncap taxable value in the following year; the transfer-year bill is not necessarily the buyer’s future bill. Choose the purchase/reassessment reset when comparing the next assessment scenario, and ask the assessor which transfer rules apply. For a continuing assessment without losses or additions, the model limits growth to the lower of SEV and the entered capped-value growth. It does not model the full statutory additions-and-losses worksheet.
A principal residence exemption changes the rate
A qualifying PRE generally exempts the property from up to 18 mills of local school operating tax. It does not erase school debt, state education, county, municipal or other applicable levies. When using manual school rates, this calculator reduces that school assumption by up to 18 mills. When using a Treasury district reference, it selects the published PRE or non-PRE column instead. Do not deduct another 18 mills from a published PRE rate. Verify the actual exemption percentage and filing status on the parcel record.
Match the township, village and school district
The same county can contain many tax combinations. Select the county first, then the township or city and exact school district. A village row is distinct from the surrounding township row, and school-transfer or community-college situations can require additional confirmation. The source uses shortened school names; the selector also includes the Treasury municipality code and a unique row identifier. The county table shows a range of published combinations, not an average to apply to every home. Three source rows lack a school name and are deliberately unavailable for selection.
A median-value example, with a dated district rate
Census QuickFacts reports a Michigan median owner-occupied home value of $231,600 for 2020–2024. To illustrate the arithmetic, a newly assessed scenario at 50% gives $115,800 taxable value. The 2025 Alcona Township / Alcona Community School PRE reference is 20.2097 mills: $115,800 × 20.2097 ÷ 1,000 = $2,340.28 before an administration fee or parcel-specific charges. The non-PRE reference is 38.2097 mills, giving $4,424.68. This combines a statewide statistical value with one identified district to demonstrate the formula; it is not the median Michigan tax bill or a 2026 quote.
The report year and check date mean different things
The complete Treasury table available at this source check contains rates levied and billed in 2025. Its publication date and our September 30, 2026 check do not turn those numbers into 2026 rates. Selecting a reference sets the calculator tax year to 2025; changing the year disables that historical rate. The Treasury estimator and PDF describe different expected publication timing for the next edition, so verify the next release directly. The 2025 capped-value multiplier is 1.031; the checked 2026 multiplier is 1.027. Do not apply either automatically to a future year.
Separate special charges from the millage calculation
The imported reference uses the report’s last two columns, which include specified township-wide ad valorem special assessments. It excludes the administration fee, other parcel-specific assessments and some college or school-transfer differences identified in the report’s disclaimers. Add only charges that are not already included in the selected column. The optional administration fee applies to the modeled ad valorem tax; confirm the collector’s actual percentage and treatment of other charges. A bill can contain both tax and separately assessed services, so comparing totals without their components can mislead.
Use the local bill and exemption calendar
Michigan bills commonly separate summer and winter collections, with local due dates and allocations. The annual estimate here combines the published annual levy; it does not split the result into a collector’s actual installments. Check the township or city treasurer’s calendar and the assessment notice’s appeal instructions. PRE, poverty, senior-related relief and disabled-veteran benefits have distinct eligibility and application requirements; a homeowner checkbox does not establish qualification for all of them. Keep the assessment notice, exemption approvals, district identifier and source year with the saved calculation.
Keep your assumptions with the result
Save the calculation to your deal file to reuse compatible inputs in another tool. The file stays in this browser on this device. Download the CSV to open the complete inputs, results and schedule in Excel or Google Sheets. Use PDF to print the report or save it as a PDF. A share link includes entered financial figures in its URL, so use it only with people you intend to share those numbers with.