The Tax Estimate on That Cottage Listing Is the Seller’s Bill, Not Yours. On Old Mission the Gap Runs About $7,650 a Year.

Pull up any cottage listing up here and scroll down to the tax line. That number is almost always the seller's bill, built on a taxable value that has been capped since the Clinton administration, on a house they actually live in.

Yours will be a different number. On an $850,000 place in Peninsula Township, "different" can mean roughly $19,200 a year instead of the $4,900 the seller has been paying.

That is not a typo. It is two separate levers moving at once, and most buyers only know about one of them.

Lever one is the cap. Lever two is the rate.

Everybody up here has heard about uncapping. When a property sells, its taxable value resets to about half of what you paid, and that alone can double or triple the bill on a cottage that has been in one family for thirty years. I have written about how families keep that cap intact between generations, and how easily a well-meaning LLC destroys it.

Lever two is the one nobody explains: the millage rate itself changes depending on whether you actually live there.

Michigan's principal residence exemption, the PRE, still called the homestead exemption by half the people in this business, exempts your principal residence from up to 18 mills of local school operating tax under MCL 211.7cc. Own it, occupy it, and those mills come off the bill.

A cottage does not qualify. Neither does a rental, a flip, or the place you spend four months a year while your driver's license still says Illinois. Those are non-homestead, and they pay full freight.

Eighteen mills is the headline. Your real number depends on your township and your school district.

Grand Traverse County publishes a total millages report every year, and it is worth pulling your exact line instead of trusting the round number. From the 2025 report, non-homestead against homestead:

Peninsula Township on TCAPS, 45.2460 mills against 27.2460. East Bay Township on TCAPS, 44.7916 against 26.7916. The City of Traverse City, 56.6612 against 37.6775. Whitewater Township on Elk Rapids Schools, 41.8573 against 23.8573.

Most of those land on a clean 18-mill gap. Some do not. Whitewater Township on the TCAPS side shows a 19.5000 spread, Blair Township on TCAPS shows 18.9870, and Grant Township on TCAPS shows 22.6065, the widest combination in the county.

So run your own line before you assume anything. On a $475,000 house in East Bay, the swing between homestead and non-homestead is about $4,275 a year. On a $600,000 place inside the city of Traverse City, about $5,695. Over a ten-year hold that is real money.

The deadline that decides it is November 1, and it is closer than you think.

Michigan gives you two filing dates. Form 2368, the Principal Residence Exemption Affidavit, filed on or before June 1 applies to that summer's tax levy. Filed any time from June 2 through November 1, it applies to that winter's levy.

June 1 is gone. If you are closing on a primary residence between now and the end of October, November 1 is your date, and missing it means eating the non-homestead rate on the December bill for no reason at all.

The affidavit usually rides along in the closing packet. "Usually" is doing a lot of work in that sentence. Confirm it was filed and date-stamped by your township or city assessor, because the assessor's stamp is the thing that counts, not your closing agent's good intentions.

Moving up north and still holding a house downstate? There is a fix, and it has teeth.

Michigan lets you claim a PRE on your new principal residence and keep it on the old one for up to three years. That is the conditional rescission, Form 4640. The old property has to be unoccupied, for sale, not leased, and not used for business or commercial purposes.

Every one of those words is load-bearing. "Not occupied" was defined by the Court of Appeals in Eldenbrady v City of Albion as without human occupants, meaning a tenant or a resident. And "for sale" does not require an agent. Treasury's own guidelines say a for-sale-by-owner sign can be enough, as long as the asking price is reasonable and you are taking real steps to sell.

The trap is leasing. Rent the old house out and the conditional rescission is denied retroactively, effective December 31 of the previous year. You also have to refile Form 4640 by December 31 every single year or the assessor denies it.

The rental question almost everybody gets wrong

Here is one that surprises people, including some agents. Treasury's guidelines used to say that renting your principal residence more than 14 days a year killed the PRE.

In 2017 the Court of Appeals threw that out in Rentschler v Township of Melrose, a Charlevoix County case, holding that the 14-day guideline was contrary to the General Property Tax Act and therefore invalid. If the home genuinely is your principal residence, renting it does not automatically disqualify you.

That does not mean you can claim a PRE on a pure investment property, and it does not override a single township ordinance about whether you can rent at all. Those are a different fight entirely, and I keep them sorted township by township in the short-term rental guide. But an owner-occupant who rents a few summer weeks is not automatically out.

Getting it wrong is expensive in both directions

Claim a PRE you are not entitled to and Treasury can deny it for the current year plus the three immediately preceding years, with interest at 1.25% per month running from the original due date. Since 2017 there is also a $500 penalty for claiming a substantially similar exemption in another state, with misdemeanor exposure on top.

Miss a principal residence exemption you were entitled to and you are not sunk either. The July or December Board of Review can grant valid untimely claims for the current and three immediately preceding years, in writing. The March Board of Review has no authority over untimely PRE claims, which trips people up constantly.

Three questions before you write the offer

Is this honestly my principal residence? Not "will I be there a lot." The exemption follows where you actually live, and where your driver's license, voter registration and tax returns say you live.

What is my line in the county millage report? Township plus school district, non-homestead column. Then run it against half your purchase price, not against the seller's taxable value.

Who is filing the affidavit, and when do I see the date stamp? If the answer is a shrug, that job just became yours.

The tax estimate on a listing is a fact about the seller. What you will pay is a different calculation with different inputs, and on a second home up here it lands three to four times higher more often than buyers expect.

If you are looking at what is on the market right now, run the real number before you fall in love with the dock. We do this math with buyers all the time, and it is a lot less painful in August than it is when the winter bill shows up in December.

Taylor Brown, Realtor
Taylor@taylorbrownrealtor.com