Michigan calculates your property tax on Taxable Value, not on
Assessed Value. They are two different numbers on the same notice, and for most
property that has not changed hands recently, Taxable Value is the lower of the two.
It is capped, and it rises slowly.
After a successful appeal, your Taxable Value becomes whichever is lower: what it
already was, or your new Assessed Value. So winning a reduction in Assessed Value
only reaches this year's bill if the value we can justify falls
below your current Taxable Value.
If it does not, the appeal is real and the saving is zero. That is not a fine-print
exception. It is the ordinary case for a property somebody has owned for a while.
What we check before we encourage anybody
The assessment we can support must be lower than your current Taxable Value.
If that is not true for your parcel, we tell you there are no first-year savings.
We do not put you into a follow-up sequence and we do not show you a hypothetical.
There are still reasons to correct an assessment that is wrong — a sale, a
transfer, or an uncapping can make today's Assessed Value tomorrow's Taxable
Value. But that is a different conversation from first-year savings, and we will
not blur the two to keep you interested.