Michigan has no single statewide property tax rate. Instead, your bill is built from a stack of local millages — county, city or township, school district, community college, library, and special districts — applied to a taxable value that Michigan law pegs at half of market value. This calculator walks you through that math in two inputs: what your home is worth and the total millage on your tax notice, then subtracts the 18-mill Principal Residence Exemption (PRE) if the home is your primary residence.
Adjust the sliders and every figure updates instantly. You can flip the PRE switch to compare what an owner-occupied home costs versus a rental or second home, and see the effective tax rate as a percentage of your home's market value.
How to Use
- Enter the Home Market Value — the amount the county assessor says your property would sell for today. On a newly purchased home, this is roughly your purchase price; on an older home it may differ because Proposal A caps how fast taxable value can grow each year.
- Type the Total Millage Rate from your summer or winter tax bill. Millage varies widely by district — Detroit, Detroit Public Schools, and Wayne County together can push the combined rate above 65 mills, while many rural townships sit closer to 35–45 mills. One mill equals $1 of tax per $1,000 of taxable value.
- Set the Principal Residence Exemption (PRE) switch. If the home is your primary residence, leave it on "Yes" — the state removes 18 school-operating mills from the first $140,000 of taxable value. If the home is a rental, vacation house, or second home, flip it to "No" and the full millage applies.
- Read the result card: the State Equalized Value (SEV), the tax before the exemption, the PRE reduction, your annual and monthly tax, the effective rate, and the dollar savings the PRE is giving you.
The math behind it is straightforward: Michigan assesses property at 50% of market value, multiplies that State Equalized Value by the millage divided by 1,000, and then subtracts the 18-mill PRE credit on the first $140,000 of assessed value for owner-occupants.
How Michigan Property Tax Actually Works
Three ideas drive every Michigan tax bill:
- 50% assessment ratio. Under the General Property Tax Act (MCL 211), your assessor sets a State Equalized Value (SEV) equal to 50% of the property's true cash value. A $250,000 home therefore starts from a $125,000 assessed value.
- Millage, not a percent. There is no flat 1% or 2% state rate. Each unit of government — county, city, township, school district, community college, library authority, and special districts — votes on its own mills. Your combined millage is the sum of all of them. A mill is $1 per $1,000 of taxable value, so 45 mills on $125,000 is $5,625.
- Proposal A capped taxable value. Since 1994, your taxable value can rise no faster than inflation (the CPI) or 5% per year, whichever is lower — until you sell. The year after a sale, taxable value "uncaps" and resets to roughly the new SEV, which is why long-time Michigan homeowners often pay far less than new buyers in the same neighborhood.
The Principal Residence Exemption (PRE) is the biggest homeowner break. File Form 2368 with your city or township assessor after you move in, and your primary home stops paying 18 mills of school operating tax on the first $140,000 of taxable value. On a $250,000 home that is a $2,250 annual reduction — and on a $1,000,000 home, because the cap is $140,000 of value, the same 18 mills saves exactly $2,520.
Examples
Example 1 — A typical Oakland County home. A family buys a home for $250,000, and the combined millage on their summer tax bill is 45 mills. The assessor's SEV is $125,000. Before the PRE, the tax is $125,000 × 45 / 1,000 = $5,625 per year. Because it is their primary residence, the PRE removes 18 mills on the first $140,000 — and since the SEV is only $125,000, the full exemption applies: $125,000 × 18 / 1,000 = $2,250 off. Their net annual tax is $3,375, or about $281 per month, an effective rate of 1.35%.
Example 2 — A rental property in the same district. The same $250,000 home owned by an investor who does not live there pays the full 45 mills with no PRE: $125,000 × 45 / 1,000 = $5,625 per year, or $468.75 per month. Flipping the PRE switch to "No" in the calculator shows exactly that gap — a $2,250 difference every year, which is why out-of-state landlords often quote higher rent on Michigan properties.
Example 3 — A high-value home in Detroit. A buyer pays $1,000,000 for a home in the city, where combined millage runs near 65 mills. The SEV is $500,000. Tax before exemption is $500,000 × 65 / 1,000 = $32,500. The PRE, however, only covers 18 mills on the first $140,000 of value: $140,000 × 18 / 1,000 = $2,520 off. The net bill is about $29,980 per year, or roughly $2,498 per month — an effective rate near 3.0%, which is why Detroit is repeatedly ranked among the highest property-tax cities in the country.
FAQ
How is Michigan property tax calculated?
Start with the home's market value and cut it in half to get the State Equalized Value (SEV). Multiply the SEV by the total millage rate from your tax notice and divide by 1,000. If the home is your primary residence, subtract the 18-mill Principal Residence Exemption on the first $140,000 of assessed value. For a $250,000 home at 45 mills, that works out to $5,625 before the exemption and $3,375 after it.
What is the Principal Residence Exemption (PRE) and how do I claim it?
The PRE exempts your primary home from 18 mills of local school operating tax on the first $140,000 of taxable value. You claim it by filing Form 2368 with your city or township assessor, usually within 90 days of moving in. The exemption stays on the home every year until you move out or convert it to a rental — then you must notify the assessor, because failing to do so can trigger back-tax penalties.
What is a mill and how much is 45 mills in dollars?
A mill is $1 of tax per $1,000 of taxable value. So 45 mills means $45 of tax for every $1,000 of assessed value. On a $125,000 SEV that is $125 × $45 = $5,625 per year. Michigan's combined millage typically ranges from about 35 mills in rural districts to more than 65 mills in Detroit and some urban school districts.
Why is my neighbor's tax bill so much lower than mine?
Because of Proposal A. Since 1994, your taxable value can rise no faster than inflation or 5% per year, whichever is lower — until the home sells. A neighbor who bought 20 years ago has a taxable value that has barely grown, while your freshly purchased home has "uncapped" to 50% of the current market value. This is the single biggest reason two similar houses on the same block can carry very different tax bills.
Does Michigan have a mortgage recording tax or any other property-related levy?
Yes. Michigan charges a state mortgage recording tax of 0.75% (plus an extra 0.1% in some counties) when you take out a new purchase or refinance loan, but that is a one-time closing cost, not a recurring property tax. Your annual bill is the millage-based levy this calculator estimates, plus any special assessments for sidewalks, streetlights, or sewer bonds that your local unit adds on top.
Can I appeal my assessment?
Yes. Every March your local board of review hears assessment appeals. You can argue that your SEV is above 50% of true cash value, or that comparable homes on your block have lower assessments. Filing deadlines are in mid-March — contact your city or township assessor for the exact date and the form. Winning an appeal lowers the SEV (and therefore the tax), which compounds every year because the lower value becomes the base for future capped growth.
Disclaimer
This Michigan property tax calculator is provided for informational purposes only and does not constitute tax, legal, or financial advice. Estimates use the statutory 50% assessment ratio, the 18-mill Principal Residence Exemption on the first $140,000 of assessed value, and the millage rate you enter; actual bills vary by county, school district, voted bonds, special assessments, and Proposal A capped taxable value, and may change after a purchase uncap. Always confirm your exact millage and taxable value on the tax statement issued by your county treasurer before making a budgeting or purchasing decision.