THE MECHANICS
How Proposal A Controls Your Property Taxes
01
Annual Taxable Value Is Capped
02
A Gap Grows Over Time
03
The Cap Resets on Transfer
THE POP-UP TAX
Why Buyers Pay Dramatically More Than Previous Owners
The pop-up tax is the practical consequence of Proposal A. It refers to the sudden increase in property taxes that occurs when a property transfers and the taxable value resets from its capped level to the full State Equalized Value.
Consider a commercial property with an SEV of $1.5 million but a capped taxable value of just $800,000. The previous owner pays taxes on $800,000. The day after you close, you pay taxes on $1.5 million — nearly double. This applies to all property types: residential, commercial, and industrial.
For investors and portfolio operators, the pop-up tax is not just a surprise — it can fundamentally change the economics of a deal. That's why factoring uncapping into your acquisition due diligence is essential.
YOUR RIGHTS UNDER PROPOSAL A
What Commercial Owners Can Still Control
Appeal the assessed value (SEV) if it exceeds true market value
Challenge the property classification if it's incorrect
Request a review of the assessor's comparable sales data
File before the May 31 Michigan Tax Tribunal deadline
Reduce your ongoing tax base for future years
THE DECISION
Proposal A Doesn't Mean You're Stuck
The tax cap protects long-term owners, but it doesn't help buyers after a transfer. What you do next determines whether you overpay for years or take control of your tax burden.
When You Challenge the Assessment
Taxable value reflects actual market conditions, not inflated estimates
Reduced tax base carries forward into future years under the cap
Acquisition underwriting accounts for true post-closing tax exposure
Portfolio-wide savings compound across multiple Michigan properties
When You Accept the Default
You pay taxes on an uncapped value the assessor set — often too high
Overpayment compounds year after year under the new capped baseline
Missed deadline means waiting another full year to file
Acquisition returns erode from tax burden you never needed to carry
Before Proposal A passed in 1994, there was no constitutional limit on how much a property's taxable value could increase each year. Proposal A amended the Michigan Constitution to cap annual taxable value increases at the lesser of 5% or the rate of inflation (CPI). It also shifted school funding from local property taxes to a statewide system. For property owners, the most significant impact is the cap on taxable value growth — and the uncapping event that resets it upon transfer.
Yes. Proposal A applies to all property types in Michigan — residential, commercial, industrial, and agricultural. The annual taxable value cap and the uncapping rules on transfer work the same way regardless of property classification. Commercial and industrial properties, however, often have larger gaps between SEV and taxable value because of higher appreciation rates and longer hold periods.
The pop-up tax is the difference between what the previous owner paid (based on the capped taxable value) and what the new owner pays (based on the full SEV after uncapping). It is not a separate tax — it's the result of the taxable value resetting. For example, if a property's capped taxable value was $500,000 and the SEV is $900,000, the new owner's tax base jumps by $400,000 overnight. Multiply that by the local millage rate to see the dollar impact.
Absolutely. The uncapping itself is a legal mechanism under Proposal A, but the assessed value (SEV) is still subject to challenge. If the assessor has overvalued your property — using bad comparables, ignoring vacancy, or misclassifying the property — you have every right to file an appeal with the Michigan Tax Tribunal. Reducing the SEV reduces the value your taxes uncap to.
Every Michigan acquisition should model the post-uncapping tax burden as part of due diligence. Look at the current SEV versus the capped taxable value to estimate the pop-up tax. Then assess whether the SEV is accurate or inflated relative to the purchase price and market conditions. Smart buyers budget for the uncapping hit and plan to appeal the assessment immediately after closing to bring the tax base in line with reality.
MICHIGAN PROPERTY TAX APPEALS
Don't Let an Inflated Assessment Define Your Tax Burden
Proposal A resets your taxable value on transfer, but it doesn't guarantee the assessment is right. We review your property's SEV, identify overvaluations, and file before the deadline. No fee unless we reduce your taxes.
