Michigan Property Taxes Explained: Proposal A, Taxable Value Uncapping & the Principal Residence Exemption

One of the most common surprises Michigan homebuyers encounter — particularly buyers relocating from out of state or purchasing a vacation home in Northern Michigan — is the property tax bill that arrives after closing. It is often significantly higher than what the previous owner was paying. The reason comes down to how Michigan's property tax system works, and understanding it before you buy can save you thousands of dollars in budget surprises.

This post walks through the three things every Michigan buyer needs to understand: Proposal A, taxable value uncapping, and the Principal Residence Exemption. These are not obscure technicalities — they are the mechanics that determine what you actually pay every year you own property in Michigan.

What Proposal A Actually Does (and Why It Creates a Gap)

Michigan voters passed Proposal A in 1994, fundamentally restructuring how property taxes are calculated. Before Proposal A, a homeowner's tax bill could jump sharply any year the local assessor raised their property's assessed value. After Proposal A, annual increases in taxable value — the number your taxes are actually based on — are capped at either 5% or the rate of inflation, whichever is lower.

In 2026, that cap is 2.7%, reflecting the Consumer Price Index adjustment for the year. For an owner who has held their property for a decade or more, this cap creates a growing gap between their taxable value and the property's current market value. Their tax bill reflects a number that is frozen well below what the property is actually worth.

This is especially dramatic in Northern Michigan, where waterfront and vacation property values have climbed substantially over the past decade. A family that bought a cottage on Walloon Lake or Torch Lake in the early 2010s may have a taxable value of $200,000 on a property that now sells for $900,000. Their annual taxes might be $4,000. The new buyer will not inherit that tax bill. Not even close.

Taxable Value Uncapping: What Happens When You Buy

When a property transfers ownership, Michigan law requires the taxable value to “uncap” — meaning it resets to the property's State Equalized Value (SEV), which is approximately 50% of the assessor's estimate of market value. Starting the following year, the Proposal A cap applies again, but now it is calculated from the new, higher base.

Here is a simplified example of how that plays out: A property sells for $600,000. The assessor values it at $600,000 for market purposes, making the SEV $300,000. If the previous owner's taxable value was $120,000, their taxes might have been around $2,400 per year (at a combined rate of roughly 20 mills). After uncapping, the new owner's taxable value resets to $300,000 — and their annual tax bill roughly doubles or more, depending on local mill rates and whether the Principal Residence Exemption applies.

This is why you should never use the current owner's tax bill as your estimate for what you will pay. It is almost always lower — sometimes dramatically so — than what you will actually owe. When we work with buyers in Charlevoix, Petoskey, Boyne City, and across Antrim, Emmet, and Charlevoix counties, we always help buyers run a post-uncapping estimate before they finalize their offer. It is a critical piece of the true cost-of-ownership picture.

To estimate your post-transfer tax bill: take the purchase price, divide by 2 to get an approximate new taxable value, then multiply by the local mill rate (which varies by township and school district). Your lender or a local real estate attorney can help you find the exact mill rate for any given property. As always, consult a local attorney or CPA for guidance specific to your situation.

The Principal Residence Exemption: What It Is and Who Qualifies

Michigan offers a significant tax break for homeowners who use a property as their primary residence: the Principal Residence Exemption (PRE), sometimes still called the homestead exemption. If you qualify and file the exemption, you are exempt from up to 18 mills of school operating taxes — a savings that typically ranges from $1,000 to $3,000 per year depending on your taxable value and location.

To qualify, the property must be your primary domicile — the place where you live and to which you intend to return. You cannot claim the PRE on a vacation home, a rental property, or a second home, even if you spend several months a year there. Many Northern Michigan buyers who purchase a cabin or lake house with the intention of eventually making it their primary residence assume they can claim the PRE immediately — but unless it is your actual domicile, you cannot, and claiming it incorrectly can result in back taxes and penalties.

If the property will be your primary residence, you need to file Form 2368 (the Principal Residence Exemption affidavit) with your local assessor. The filing deadlines are June 1 to receive the exemption for the current summer tax levy and November 1 for the winter levy. Miss those dates and you will pay non-PRE rates for that billing period.

For buyers relocating to Northern Michigan communities like Bellaire, Gaylord, or Mackinaw City — or for out-of-state buyers making Michigan their new primary home — filing the PRE promptly is one of the first things to do after closing. If you closed in the spring, the June 1 deadline may come up fast.

What Michigan Buyers Should Do Before Making an Offer

The practical takeaway from all of this is straightforward: before you make an offer on any Michigan property, you need a realistic estimate of what your property taxes will be — not what the seller is currently paying.

Start by looking up the property's current assessed value and SEV on the local township or county assessor's website. Most Michigan counties have public-facing property lookup tools. Compare that SEV to the asking price — if the asking price is significantly higher than twice the SEV, expect the assessor to potentially reassess upward at next review, though that process is separate from the uncapping that happens automatically at transfer.

Next, find the applicable mill rate. Mill rates in Northern Michigan vary widely by township and school district — some areas have combined rates of 20 to 30 mills or higher when you include county, township, school, and special assessment levies. Your agent or the local assessor's office can provide the breakdown. For buyers in markets we cover, we can walk you through this calculation as part of the purchase process.

Finally, determine whether you will qualify for the PRE. If this is your primary residence, factor in the 18-mill savings. If it is a vacation home or investment property, run your numbers at the full non-PRE rate — and factor that into your rental income projections if applicable.

Understanding Michigan's property tax system is one of those things that separates buyers who are prepared from buyers who get surprised at their first tax bill. If you are exploring the Michigan market in 2026 or looking at buying a vacation home up north, getting the property tax picture right is part of knowing what a property truly costs to own. Holly & Zoe can help you run those numbers on any property you're considering — it is one of the most valuable parts of working with local experts who know these markets and these tax structures firsthand.