Michigan Property Tax Uncapping Explained

Why the taxes you pay after closing are almost never the taxes the seller was paying

In Michigan, the taxable value of a property is capped while the same owner holds it. It can rise each year only by the lower of the inflation rate multiplier or 5 percent. When the property transfers, that cap comes off. In the year following the transfer, taxable value resets to the property's State Equalized Value, which is intended to represent roughly half of true cash value. For a home held a long time, the gap between the capped taxable value and the SEV can be large, and the tax increase that follows can be substantial rather than incremental. This page explains the mechanics, the math, and the one scenario that catches buyers most often.

The Two Values That Matter

Michigan property tax bills are calculated on taxable value, not on market value and not on the sale price. Two separate numbers appear on every assessment notice, and confusing them is the source of most misunderstanding.

The two numbers:

• State Equalized Value (SEV) is set by the local assessor and is intended to approximate 50 percent of the property's true cash value.
• Taxable Value (TV) is the figure your tax bill is actually calculated against. While ownership stays the same, it is capped.

Under the capped value formula, taxable value can increase annually only by the lower of the inflation rate multiplier or 5 percent, adjusted for physical additions or losses. The Michigan State Tax Commission set the inflation rate multiplier for 2026 at 1.027, meaning 2.7 percent. In a market where values rise faster than that, taxable value falls further behind SEV every year the property is held.

That widening gap is invisible until the property sells. Then it closes all at once.

Why the Gap Widens: Every Multiplier Since Proposal A

The cap has been in place since Proposal A took effect in 1995. Each year the Michigan State Tax Commission publishes a single inflation rate multiplier that every local unit is required to use. Local assessors have no discretion to substitute a different figure.

Seen across the full period, the constraint is severe. Compounded from 1995 through 2026, capped taxable value has been permitted to grow a total of about 116.5 percent, an average of roughly 2.44 percent a year. Michigan home values have risen considerably more than that over the same three decades. The difference between those two curves is the uncapping exposure sitting on any long-held property.

* In 2023 and 2024 the calculated inflation rate exceeded 5 percent, so the 5 percent statutory ceiling governed the capped value formula instead. The Headlee millage reduction figures for those years were 1.079 and 1.051 respectively. Source: Michigan State Tax Commission Bulletin 14 of 2025.

Two entries in that table are worth pausing on:

• 2010 shows 0.997. The multiplier fell below 1.0, meaning capped taxable values across Michigan decreased that year. It is the only such year since Proposal A.
• 2023 and 2024 both show 1.050. Inflation ran above 5 percent in both years, and the statutory 5 percent ceiling took over. This is the practical proof that the cap is the lower of the two figures, not simply the inflation rate.

What Happens the Year After Closing

A transfer of ownership removes the cap. In the year following the transfer, taxable value is set equal to that year's State Equalized Value. The cap then reapplies going forward under the new owner.

The timing matters and is frequently misread. Uncapping does not happen at closing. It happens the following tax year. A buyer who closes in June will often pay the seller's capped figure for the balance of that year, then receive a materially different bill the next year. The relief is temporary, and treating that first partial year as the new normal is a budgeting mistake.

A worked example, using real Livingston County millage:

A home in Brighton Township within the Brighton Area Schools district has been owned since 2009. Its capped taxable value sits at $118,000. Its SEV is $205,000. A buyer purchases it for $400,000.

• The seller's bill, at the 2025 principal residence rate of 19.8570 mills, was roughly $2,343 per year.
• The year after closing, taxable value resets from $118,000 to the SEV of $205,000.
• The buyer's bill at the same millage becomes roughly $4,071 per year.

That is an increase of about $1,728 annually, or 74 percent, with no change to the millage rate and no change to the home. It is $144 a month, which is enough to alter what a buyer can comfortably carry.

The Scenario Most Buyers Never See Coming

Here is the part that is rarely explained, and it is worth understanding before you write an offer.

Because SEV is meant to represent about half of true cash value, doubling the current SEV gives you a rough sense of what the assessor believes the property is worth. Compare that doubled figure to your purchase price. If twice the SEV exceeds what you are paying, you may end up taxed on a value higher than the price you actually paid.

Using the example above, if that home's SEV were $215,000 rather than $205,000, the assessor's implied value would be $430,000 while the negotiated price was $400,000. The new taxable value would still reset to $215,000. The buyer would be taxed as though the home were worth $30,000 more than it sold for.

This is not an error, and it is not something to appeal automatically. Michigan law is explicit on the point. MCL 211.27(5) states that the purchase price paid in a transfer is not the presumptive true cash value of the property, and directs the assessor to value transferred property using the same method applied to all other property. Your sale price is evidence. It is not the controlling number.

Checking the current SEV before writing an offer takes a minute and occasionally changes the offer.

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What a Principal Residence Exemption Changes

Whether the property is your principal residence changes the millage applied to it, and the difference is not small.

Across Livingston County, the spread between the principal residence rate and the non-homestead rate is a flat 18 mills in nearly every jurisdiction. That 18 mills is the local school operating millage, which a Principal Residence Exemption removes.

Applied to the $205,000 taxable value in the example above, that spread is roughly $3,690 per year. Whether the exemption is in place on your parcel for the coming year is therefore one of the more consequential details in the transaction, and it is not automatic. Filing timing matters, and a prior exemption on the property generally has to be rescinded before a new one takes effect.

The 45-Day Filing Requirement

Michigan law places an affirmative filing obligation on the buyer. Under MCL 211.27a(10), the transferee must notify the local assessor of the transfer within 45 days, using the Property Transfer Affidavit, Treasury Form 2766, also known as L-4260. The obligation applies whether or not a deed is recorded, and it applies even when claiming an exemption from uncapping, because the affidavit is the mechanism for claiming one.

Missing the deadline carries a per-day penalty. The larger exposure is different and less obvious: if an unreported transfer surfaces later, the law provides for uncapping retroactively to the year following the transfer, with the intervening years recalculated and the additional taxes billed with interest. A filing overlooked at closing can become a bill years afterward.

Certain transfers are exempt from uncapping altogether, including some transfers between close relatives and certain qualified agricultural property transfers. These exemptions turn on specific statutory conditions, and they are claimed on the affidavit rather than granted automatically. Anyone in that situation should speak with a Michigan real estate attorney or tax professional before filing.

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Why This Matters If You Are Selling

Uncapping shapes seller behavior even though sellers never pay the uncapped bill themselves.

An owner who has held a home for fifteen or twenty years carries a taxable value far below current SEV. Moving means giving that up and starting over at the top of the range on the next property. That arithmetic is one reason owners in Livingston County have been staying in their homes longer, and it contributes directly to the constrained inventory that shapes pricing across the county.

For a seller, the practical implication is narrower. The uncapped figure is what a buyer will actually be paying, and a buyer who discovers it late in the process may revisit their offer. A seller whose agent has anticipated the question is negotiating from a stronger position than one who has not.

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Frequently Asked Questions

Will my property taxes be the same as the seller's?

Almost certainly not, if the seller owned the home for any length of time. Their taxable value was capped during their ownership. Yours resets to the State Equalized Value in the year following the transfer. The longer they owned it, the wider the gap tends to be.

When exactly does uncapping happen?

In the tax year following the transfer, not at closing. You may pay close to the seller's figure for the remainder of the year you buy in, then see the adjusted amount the following year.

How do I estimate what my taxes will actually be?

Take the current SEV, or use roughly half of the purchase price if the SEV is unavailable, then apply the millage rate for that specific municipality and school district. Derek's Michigan Property Tax Estimator does this calculation using published rates for the jurisdiction you select.

Can I be taxed on more than I paid for the home?

It is possible. Taxable value resets to SEV, and MCL 211.27(5) provides that the purchase price is not the presumptive true cash value. If twice the current SEV exceeds your purchase price, the assessed value may imply a figure above what you paid. Checking the SEV before writing an offer is worthwhile.

What is the Property Transfer Affidavit and who files it?

Treasury Form 2766, also called L-4260. The buyer files it with the local assessor within 45 days of the transfer. It is required even when an exemption from uncapping is being claimed, since the form is how the claim is made.

Are any transfers exempt from uncapping?

Yes. Michigan law provides exemptions for certain transfers, including some between close relatives and certain qualified agricultural property. The conditions are specific and the exemption is claimed on the affidavit. Anyone relying on one should confirm eligibility with a Michigan real estate attorney or tax professional.

Connect With Derek

Whether you are writing an offer and want the tax picture understood before you sign, or preparing to sell and expecting the question from a buyer, Derek welcomes a direct, confidential conversation.

Derek Bauer

Associate Broker, REALTOR® | Real Estate One

Certified Residential Specialist - CRS

565 E. Grand River Ave., Brighton, MI 48116

734-678-4745

[email protected]

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Broker compensation is not set by law and is fully negotiable. All compensation is determined through negotiation between the parties. The information on this page is provided for general informational purposes only and does not constitute professional real estate, legal, financial, or tax advice, and it is not a substitute for advice from a Michigan real estate attorney, tax professional, or the local assessor. Millage figures referenced are 2025 rates published by the Michigan Department of Treasury, Property Services Division, and do not include the 1 percent property tax administration fee. Examples are illustrative and do not represent any specific property. Assessment practices and individual results vary. Derek Bauer is a licensed Michigan Associate Broker (License #6506038159) operating under Real Estate One, 565 E. Grand River Ave., Brighton, MI 48116. Equal Housing Opportunity.