The Listing Shows $3,800 in Property Taxes. You’ll Actually Pay Closer to $6,000. Welcome to Michigan’s Uncap Rule.
Here's the pattern that plays out all over Northern Michigan every spring. An out-of-state buyer finds a charming 1970s cottage — Leelanau side of the bay, Torch Lake shoreline, Elk Lake channel, pick your body of water. Listed at $625K. The Zillow tax line reads $3,820 a year, the mental math on carrying costs pencils out, and they close in May.
Fifteen months later, their second summer tax bill isn't $3,820. It's closer to $6,400. That's not a bug or a weird local anomaly — it's the direct, predictable result of Michigan's taxable value uncap rule. So let's actually talk about it.
Proposal A, explained in about ninety seconds
In 1994, Michigan voters passed Proposal A, which created two separate numbers that sit on every property's tax record. There's the State Equalized Value (SEV), which is supposed to be 50% of market value and gets reassessed every year. And there's the Taxable Value (TV) — the number your actual tax bill is calculated from.
Here's the trick: the TV can only grow by the lesser of inflation or 5% per year. For 2026, that cap is 2.7%. The SEV, on the other hand, just follows the market.
So in a market that's doubled in twenty years — which, if you've been paying attention up here, is exactly what happened — those two numbers drift very far apart.
The uncap: not sometimes, not maybe. Every single sale.
When ownership of a property transfers in Michigan, the taxable value uncaps the following January 1. It resets to match the SEV. This happens on every arm's-length sale, no exceptions that apply to a normal buyer-seller transaction.
That cottage on Lake Leelanau? If the sellers bought it in 1999 and held onto it, their TV might be sitting at $180K while the current SEV is $325K. The second they sign the deed, that $180K ceiling is gone. Starting the next calendar year, you're paying taxes on the full $325K.
This is the single biggest reason first-year tax bills up here come as a shock. And honestly, most listing agents don't volunteer the math. It's on buyers to dig for it.
The second kicker that hits second-home buyers the hardest
Now layer in the Principal Residence Exemption. If the property is your true, fixed, permanent home — the place you actually live — you qualify for the PRE and get exempted from 18 mills of school operating tax.
If it's a second home, a vacation property, or a rental, you pay that 18 mills. Full stop.
In Northern Michigan, where a huge percentage of our sales are cabins, cottages, and lake houses for out-of-state buyers, this matters enormously. On a property with a $325K taxable value, losing the PRE adds roughly $5,850 a year in non-homestead tax. That's on top of the uncap.
Why Northern Michigan gets hit harder than the rest of the state
Two reasons, and they compound each other.
First: legacy ownership. A big share of the homes that trade hands up here have been in families for decades. Think of the Glen Lake cottages that three generations have summered at, or the Torch Lake properties held since the 80s. Those have the largest gaps between SEV and TV in the state — sometimes 40 to 60 percent. Compare that to a subdivision in Grand Rapids where homes turn over every seven years and the gap stays narrow.
Second: non-homestead buyer concentration. Leelanau County's buyer pool, in particular, is heavily out-of-area. Our friends at Oltersdorf Realty publish a yearly breakdown of where Leelanau buyers are coming from, and it's consistently dominated by Chicago, Detroit suburbs, Grand Rapids, and downstate markets. Most of those buyers are not filing a PRE.
So you get the uncap and the 18-mill hit at the same time. That's the double bump that makes first-year Northern Michigan tax bills feel like someone slipped a decimal place.
Actual math on an actual scenario
Let's do a realistic example. Say you're looking at a Suttons Bay property listed at $650K. The listed tax is $4,100. The sellers have owned since 2005 and filed a PRE. You're buying as a second home.
The current SEV is probably around $325K (roughly half of market value). After you close, that becomes your new taxable value as of the following January. Run the math at a typical Leelanau Township non-homestead millage — around 45 mills when you add in school operating, county, township, community college, and fire — and you're looking at roughly $14,600 a year.
That's not a typo. The listing said $4,100; your real bill is closer to $14,600. Most of the gap is the uncap. Some of it is the 18-mill non-homestead hit. It's a real number and it hits real buyers every year.
For a primary residence with the PRE preserved, that same property drops to around $8,750. Still up significantly from the listed $4,100 — but far more manageable.
How to pull the real number before you write the offer
This is the part we help clients with on every offer, but you can do it yourself too.
First, find the current SEV. Every Northern Michigan township has tax records searchable online through BS&A Online. Pull up the parcel, note the SEV — not the TV, not the listed tax. The SEV is the number that predicts your future bill.
Second, call the township assessor. Most of them pick up the phone and will quote you the current year's non-homestead millage rate without hesitation. They do this dozens of times a week.
Third, do the math: SEV × millage rate ÷ 1000. That's your realistic first-full-year bill. If you're going to qualify for the PRE, subtract 18 mills from the millage rate before you multiply.
A few traps we see every spring
Don't trust the tax estimates on Zillow, Redfin, or Realtor.com. They pull from the current owner's bill, which is almost always capped and often homestead.
Don't rely on "it'll probably be similar" from anyone who isn't willing to show you the math. That's a lazy answer.
And understand that the uncap doesn't hit your very first tax bill — you pay the old owner's rate for the partial year, then the uncap kicks in the following January, and you actually feel it starting with that first full July billing cycle. So it's a delayed ambush. Budget for it the day you close.
The bigger picture for anyone buying up here in 2026
The older and more loved the property, the bigger the uncap gap. That romantic Glen Arbor cottage that's been in one family for 40 years — beautiful property, probably going to cost you $7,000+ more per year in taxes than the listing suggests. Factor it into your monthly carrying cost before you fall in love with the porch swing.
This is one of the reasons we lean into our vacation home guide with clients — the real carrying costs up here are rarely what the search engines advertise. Same thing applies if you're looking at anything on the short-term rental side, where the non-homestead tax is a permanent fixture of the proforma.
Working in Leelanau and Grand Traverse counties, you see this pattern every single spring. A buyer falls in love with a legacy property, runs numbers on the listed tax line, and then gets quietly ambushed fifteen months later. It's one of the most fixable mistakes in real estate, because the data is all public and sitting right there in the assessor's database.
If you're shopping up here right now and want us to run the actual uncap math on any property you're considering, we do that as part of the process. Janel has been navigating Michigan's tax rules for 25 years, and she can pull an SEV and run the new-owner math in about three minutes. Browsing our current listings or looking somewhere specific like Suttons Bay? Ask us for the real tax number before you write the offer. Your budget will thank you in February.
Taylor Brown, Realtor
Real Estate One | Traverse City
Taylor@taylorbrownrealtor.com
(231) 360-1510
