Property tax assessments are landing in mailboxes across the country this month, and plenty of homeowners are opening them to a number that looks nothing like last year's.
In some metro areas, assessed values have jumped 20, 30, even 40 percent in a single cycle, even as the housing market cools off.
Here's the part that catches people off guard: an assessment is not a bill.
It's a government estimate of what your home is worth, and your tax bill is that number multiplied by your local rate.
When values spike, budgets stretch — and homeowners who don't push back often pay more than they legally owe.
The first move is to actually read the notice.
Counties typically give you a window, sometimes as short as 30 days, to file an appeal.
Miss it and you're usually locked in until the next reassessment cycle, which could be two or three years out.
Most county assessor websites let you search by address and see the square footage, bedroom count, lot size, and year built they have on file.
A garage counted twice, a finished basement that was never finished, an extra bathroom that doesn't exist — each one inflates your assessed value and your tax bill along with it.
You want recent sales of similar homes in your neighborhood, ideally within the last six months.
Zillow and Redfin estimates can help you start, but assessors rarely accept them as proof.
Actual closing prices from county records carry far more weight.
If the numbers don't add up, file the appeal.
Many jurisdictions let you do it online, and it typically costs nothing or a small fee.
You can represent yourself, and plenty of homeowners win.
A successful appeal doesn't just cut this year's bill — it resets the baseline for future ones.
One more thing worth checking: exemptions.
Veterans, seniors, disabled homeowners, and in some states long-time residents may qualify for caps or credits that lower the taxable amount.
These are easy to overlook and often require a separate application.
Rising assessments are one reason property taxes have climbed faster than inflation in many counties, squeezing budgets that were already tight.
If your mortgage escrow account handles taxes, a higher assessment can trigger a sudden jump in your monthly payment — sometimes hundreds of dollars — because the lender recalculates to cover the shortfall.
That letter from your servicer is worth reading carefully.
But an hour spent comparing your assessment to reality can save real money, year after year.
Final Thoughts
The system counts on most people shrugging and paying.