Michigan Mortgage Calculator
Proposal A caps tax growth for existing owners, but resets to full value the moment a home sells — pick your county below to see what you’ll really pay as a new buyer.
Loan & Property Details
Auto-fills from the county selected above; one mill = $1 per $1,000 of taxable value. Edit if you know your exact city + school district millage.
Your Estimated Monthly Payment
Choose a county and enter your details to see a plain-language read on your payment.
What If You Paid Extra Toward Principal?
Slide to test an extra monthly payment and see how many years and how much interest it saves.
What If Your Rate Changes?
Your 5-Year Equity Snapshot
Good to Know: What a Seller Pays (Real Estate Transfer Tax)
You won’t pay this as a buyer, but it’s worth understanding since you’ll be a seller someday, and it’s the moment that resets your future taxable value too.
| State transfer tax | $3.75 per $500 of sale price (0.75%) |
| County transfer tax | $0.55 per $500 of sale price (0.11%) |
| Combined | About 0.86% of sale price |
| Who customarily pays | Seller, at closing |
Why Michigan’s “Average Effective Rate” Understates What a New Buyer Pays
Look up “Macomb County property tax rate” and you’ll typically see something like 1.28%. That number is real, but it’s an average across every homeowner in the county, and most of them have owned their home for years under Proposal A, the 1994 constitutional amendment that caps how fast a property’s Taxable Value can grow each year, currently the lesser of inflation or 5%, regardless of how fast the home’s actual market value rises. Over a decade or two, that cap can leave a long-time owner’s Taxable Value sitting well below half the home’s current market value. The moment a home changes hands, though, that protection resets: Taxable Value “uncaps” to match the State Equalized Value, essentially 50% of current market value, and a brand-new buyer starts from that fresh, higher number. This calculator is built for exactly that scenario, a new purchase, which is why the number it produces will often run meaningfully higher than the county-average rate you’ll find quoted elsewhere.
Wayne, Oakland, Macomb, and Kent: how the four biggest counties compare
Wayne County, home to Detroit, carries the highest total millage of the four by a wide margin, a legacy of the city’s shrinking tax base needing to fund services across a large area. Oakland County, the affluent suburbs north of Detroit, and Macomb County, northeast of the city, both run meaningfully lower millage on higher average home values. Kent County, home to Grand Rapids on the state’s west side, runs the lowest total millage of the four. Switching counties above resets both price and millage defaults to match.
| Home purchase price | $266,500 |
| State Equalized Value (50% of price) | $133,250 |
| New buyer’s Taxable Value (uncapped to SEV) | $133,250 |
| Macomb total millage | 68 mills |
| Principal Residence Exemption | – 18 mills |
| Effective millage after PRE | 50 mills |
| Estimated annual tax | $133,250 ÷ 1,000 × 50 ≈ $6,663 |
That’s roughly double the county-wide “average” figure often quoted for Macomb, precisely because that average blends in so many long-tenured owners whose Taxable Value never caught up to the home’s real appreciation. Budget for your own uncapped number, not the average.
The Principal Residence Exemption: Michigan’s biggest single tax break
The PRE removes 18 mills of local school operating tax from an owner-occupied primary residence, which on a typical home is one of the largest single exemptions offered by any state in this calculator series, often $1,500 to $2,500 a year depending on your Taxable Value. It’s filed with your local assessor, commonly using the PRE Affidavit, and continues automatically as long as the home remains your primary residence. It is not automatic on a new purchase; you have to file it.
A change that could eliminate the “pop-up” entirely is being negotiated right now
As of this writing, Michigan House Bills 5872 through 5880, introduced in April 2026, would eliminate the transfer-triggered uncapping described above entirely, letting a new buyer inherit the seller’s existing, capped Taxable Value instead of resetting to current SEV. It would be funded by a new tax on services and is still being actively negotiated in the legislature. If it passes, it would be the most significant change to Michigan property tax since Proposal A itself, and would meaningfully lower the real cost of buying a long-held home. As of today, the pop-up still applies, and this calculator’s math reflects current law; check for updates if you’re timing a purchase around this legislation.
The Homestead Property Tax Credit: relief that shows up on your income taxes, not your tax bill
Separately from the PRE, Michigan’s Homestead Property Tax Credit is a refundable state income tax credit for households with total resources under roughly $67,300 and a Taxable Value under $154,400, worth the amount your property tax exceeds 3.2% of household resources, up to about $1,800. It’s claimed when you file your Michigan income tax return, not applied to the property tax bill itself.
Common Mistakes Michigan Buyers Make With the Numbers
- Using the county’s average effective rate to estimate a new purchase. That average reflects long-time, capped owners; a new buyer’s uncapped Taxable Value produces a meaningfully higher real bill.
- Forgetting to file the Principal Residence Exemption. It’s one of the largest exemptions in the country, and it’s not automatic on a new purchase.
- Assuming Proposal A protects you from day one. The cap only limits future growth after your Taxable Value resets at purchase; it does nothing to lower that initial uncapped number.
- Not watching pending pop-up tax legislation. A change here could materially affect what a buyer owes; check current status before finalizing long-term budgeting.
- Treating the Homestead Property Tax Credit as automatic. It’s a separate income tax filing, not a line item on the property tax bill.
Tips for Lowering Your Michigan Mortgage Payment
- File the Principal Residence Exemption with your local assessor immediately after closing; it’s the single largest tax reduction available to most Michigan buyers.
- Confirm your specific city or township’s exact total millage before closing, since it varies more within a county than the county average suggests.
- If household resources and Taxable Value qualify, file for the Homestead Property Tax Credit every year on your state income tax return.
- Compare rate quotes from at least three lenders active specifically in the Detroit and Grand Rapids markets, since local pricing can differ from national averages.
- Use the extra-payment scenario above; even a modest additional principal payment compounds meaningfully over a 30-year Michigan loan.
Frequently Asked Questions
How is property tax calculated in Michigan?
Property is assessed at 50% of market value (State Equalized Value), and Taxable Value is capped annually at the lesser of inflation or 5% for existing owners under Proposal A, but resets to match SEV whenever the property is sold.
Why is Michigan’s average property tax rate misleading for a new buyer?
Published county averages blend in long-time owners whose Taxable Value has been capped for years and sits below current market value. A new buyer’s Taxable Value resets to the full State Equalized Value, often producing a meaningfully higher real bill.
What is Michigan’s Principal Residence Exemption (PRE)?
An exemption removing 18 mills of local school operating tax from an owner-occupied primary residence, one of the largest single property tax breaks offered by any state, filed with the local assessor.
Is Michigan getting rid of the property tax “pop-up” on sale?
Not yet. As of this writing, House Bills 5872 through 5880, introduced in April 2026, would eliminate transfer-triggered uncapping, but the legislation is still being negotiated and current law still applies.
What is Michigan’s Homestead Property Tax Credit?
A refundable state income tax credit for households with total resources under about $67,300 and a Taxable Value under $154,400, worth the amount property tax exceeds 3.2 percent of household resources, up to about $1,800, claimed on the state income tax return.
Does Michigan have a real estate transfer tax?
Yes, a combined state and county transfer tax of about 0.86% of sale price, customarily paid by the seller.
Which Michigan county has the lowest property tax millage?
Among the state’s larger counties, Kent County generally runs a lower total millage than Wayne, Oakland, or Macomb.
What down payment do I need to buy a home in Michigan?
Conventional loans often start around 5% down, FHA loans typically require 3.5%, and VA loans can allow 0% down for eligible veterans.
When can I remove PMI on a Michigan home loan?
Federal law allows requesting PMI removal at 20% equity, with automatic lender cancellation at 22% equity based on the original amortization schedule.
Does this calculator include closing costs?
No, this tool estimates the ongoing monthly payment only. Michigan closing costs, including the transfer tax for sellers, typically add a modest percentage of the purchase price.
References
- Michigan Department of Treasury, Proposal A, Principal Residence Exemption, and Homestead Property Tax Credit guidance – michigan.gov/treasury
- Wayne, Oakland, Macomb, and Kent County Equalization/Assessor offices, current total millage rates – county government sites
- Michigan Constitution, Article IX (Proposal A); Michigan House Bills 5872–5880 (2026, pending)
- Freddie Mac Primary Mortgage Market Survey, weekly national rate averages – freddiemac.com/pmms
Related DexoCalc Tools
This Michigan mortgage calculator is part of the Mortgage Calculators cluster I am building out on DexoCalc. Start with the national Mortgage Calculator to compare Michigan against any other state, see another state where a growth cap resets on sale in the Maryland Mortgage Calculator, compare a very different levy-limiting approach in the Massachusetts Mortgage Calculator, or check a state at the opposite tax extreme in the New Jersey Mortgage Calculator. Browse every state-specific tool as new ones publish on the full Mortgage Calculators hub.
This calculator provides estimates for educational purposes only and is not a loan offer, pre-approval, or substitute for advice from a licensed Michigan mortgage professional or tax advisor. Property tax, exemption, and transfer tax figures are approximations that vary by city, school district, and individual circumstances; confirm exact figures with your local assessor. Sources: Michigan Department of Treasury, county equalization offices, Freddie Mac.