Why the Seller's Michigan Tax Bill Will Mislead You
Program and regulatory figures verified September 19, 2026. Details change; confirm your scenario with us.
Almost every Michigan listing quotes a tax number that will not be your tax number. This is the mechanism, and it is worth two minutes.
The mechanism
Proposal A, approved by Michigan voters in 1994, capped how fast a property's taxable value can grow while ownership stays the same. Over a long holding period, taxable value can therefore fall well behind what the property is actually worth.
A transfer of ownership ends that. In the calendar year following the transfer, the taxable value uncaps and is reset to the property's state equalized value, which is 50% of true cash value. MCL 211.27a(3) makes this mandatory, and the Michigan Department of Treasury's own guidance is explicit that the assessor does not have authority to refuse.
Why it matters to your payment
Property taxes sit inside the housing payment underwriting measures, and therefore inside your debt-to-income ratio. If the tax line used to qualify you comes from the seller's capped history, it is too low, and the error is systematic rather than random.
It also does not correct itself quickly. The uncapping happens the year after the transfer and then the new, higher figure becomes your own starting point.
The right approach is to model the new home's tax line from state equalized value rather than from the listing figure, and to ask the local assessor what SEV is on that parcel. That is a free phone call and it is more useful than any estimate we could publish.
The other half, which most coverage misses
Uncapping is usually discussed from the buyer's side. For a buy-before-you-sell owner there is a second angle.
The departing home keeps its capped taxable value until it transfers. While it sits on the market unsold, it is still carrying your accumulated cap, and if you have filed a conditional rescission it is also still carrying the principal residence exemption. Both of those keep the carrying cost of the overlap lower than people expect.
That is a genuine advantage of the Michigan structure and it argues for keeping the property in exactly the condition the rescission requires: vacant, listed, unleased. See the conditional rescission page.
How we handle it
We model the new home's tax line on the uncapped basis rather than the listing figure, and we model the departing home on its current capped basis for as long as you hold it. Those are two different numbers behaving in two different ways, and running both is the point of the exercise.
See how it feeds the structures on the qualifying page.
Exemption eligibility, conditional rescission filings and uncapping questions are legal and tax matters. Your local assessor, your CPA or a Michigan attorney own those answers. We flag them because they change the numbers we underwrite.
Frequently asked questions
What does uncapping mean in Michigan?
A transfer of ownership causes the property's taxable value to uncap in the calendar year following the transfer, resetting it to state equalized value, which is 50% of true cash value. It stems from Proposal A of 1994 and is required by MCL 211.27a(3).
Can the assessor choose not to uncap my property?
No. MCL 211.27a(3) requires uncapping in the year following a transfer of ownership, and the Michigan Department of Treasury's guidance states that the assessor does not have the authority to refuse.
Why is the tax figure on a Michigan listing misleading?
Because it reflects the seller's capped taxable value, accumulated over their ownership. After the sale your taxable value uncaps to state equalized value, so on a long-held home your bill can be materially higher than the one advertised.
Does my old house uncap while it is still for sale?
No. Uncapping is triggered by a transfer of ownership, so the departing home keeps its capped taxable value until it actually sells. If you have filed a conditional rescission it may also keep the principal residence exemption during that period, which keeps the overlap cheaper.
Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about financing, not a loan commitment and not legal, tax, or real estate advice. Principal residence exemption eligibility and conditional rescission rules depend on your facts; your local assessor, your CPA or a Michigan attorney, and your real estate agent each handle their own part. Loans are subject to borrower and property qualification.