How to Read Your Property Tax Assessment Notice

Every spring, a plain envelope shows up from the county assessor. Inside is a single sheet of paper, covered in numbers and abbreviations, that determines how much you will pay in property taxes for the next year. Most homeowners glance at it, shrug, and toss it in a drawer. That is a mistake. Your assessment notice is the only formal warning you get that your tax bill is about to change — and it is the starting gun for a protest window that, in most states, closes in 30 to 45 days.

Here is how to actually read the thing, and what to look for before you decide whether to fight it.

What is an Assessment Notice?

An assessment notice is an annual mailing from your county assessor (sometimes called the appraisal district or property appraiser depending on where you live). It tells you three things: what the county thinks your property is worth, what portion of that value you will actually be taxed on, and what your estimated tax bill looks like based on current millage rates. In most states it arrives between March and May, though Florida sends its TRIM notices in August.

The notice is not a bill. You do not owe money when it arrives. It is a preview — a chance to catch errors before the assessed value gets locked in later in the year.

Key Fields to Understand

Every notice is laid out differently, but the same handful of fields appear on almost all of them. Learn to find these:

**Parcel ID (or APN, PIN, Account Number).** A unique code the county uses to identify your property. You will need it to file a protest or pull comparable sales.

**Assessed Value.** The county's estimate of what your property is worth as of January 1 of the tax year. This is the number you are most likely to protest. In some states it is called "appraised value" or "market value."

**Taxable Value.** The portion of assessed value you actually pay taxes on, after exemptions are subtracted. Almost always lower than assessed value.

**Exemptions.** Line items like homestead, senior, veteran, or disability exemptions. Each shaves a chunk off your taxable value. If you qualify for one and it is not listed, fix that before worrying about a protest.

**Assessment Ratio.** Some states tax only a percentage of market value. California taxes 100%. Mississippi taxes 10% for homesteads. Arkansas taxes 20%. If your state uses a ratio, the notice should show it.

**Previous Year Comparison.** Most notices show last year's assessed value side by side with this year's. This is where red flags usually show up.

**Estimated Tax.** A forecast of your bill based on the current millage rate. Treat it as approximate; actual rates get finalized later in the year.

Assessed Value vs. Taxable Value

These two numbers get confused constantly. Assessed value is what the county thinks your home is worth. Taxable value is what you actually pay taxes on after exemptions. A homestead exemption might knock $25,000 off your taxable value. A disabled veteran exemption in Texas can zero it out entirely.

When you protest, you are almost always protesting the assessed value, not the taxable value. Exemptions are handled separately through an application — not a protest. If you think you are missing one, call the assessor's office.

Red Flags to Look For

Once you have found the key fields, start hunting for errors. The ones most worth protesting:

**Value jumped more than 10% year over year.** Unless you did a major renovation, a double-digit increase is worth questioning. Neighborhood reappraisals can cause this, but so can sloppy mass-appraisal models.

**Square footage is wrong.** Pull out an old listing or the builder's floor plan. Assessors routinely overstate finished square footage by counting garages, unfinished basements, or enclosed porches.

**Bedroom or bathroom count is wrong.** Check the property record card on the county website. If it lists four bedrooms and you have three, that inflates the value.

**Property type is miscoded.** A small multifamily marked as single family, a condo marked as townhouse, or residential marked as commercial can all push the value in the wrong direction.

The Deadline Section

Somewhere on the notice — usually at the bottom, often in small print — is the protest deadline. Find it and circle it. This is the single most important piece of information on the page. Miss it and you lose your right to protest for the entire tax year.

Deadlines vary wildly. Texas gives you until May 15 or 30 days after the notice was mailed, whichever is later. Georgia gives 45 days. Florida gives 25 days from the TRIM notice. California gives until September or November depending on the county. Do not assume you have time.

TRIM Notice (Florida)

Florida is its own animal. Instead of a spring notice, Florida counties send a TRIM notice — Truth In Millage — every August. It shows proposed taxable value, proposed millage rates, and the deadline to petition the Value Adjustment Board. You get 25 days from the mailing date. If you live in Florida, the TRIM is the notice.

What to Do Next

Once you have read the notice and flagged anything that looks off, do three things. First, pull three to five recent sales of similar homes from Zillow, Redfin, or the county's records — if they sold for less than your assessed value, you have the beginnings of a case. Second, check the property record card on the assessor's website for factual errors in square footage, bedrooms, and lot size. Third, decide whether the potential savings are worth the effort of filing.

If your assessed value looks too high and you can point to comparable sales or factual errors, it is almost always worth protesting. The filing is free, the deadline is short, and a successful protest locks in savings for the year — and often sets a lower baseline for future years too.