Eight unfamiliar numbers on one page. Here's what every field on your Georgia property tax assessment notice actually represents.
# What Does My Georgia Assessment Notice Mean? A Line-by-Line Guide
You pulled an envelope from your County Board of Tax Assessors, opened it, and found a one-page form called a Notice of Current Assessment with eight unfamiliar numbers stacked on top of each other. If you're asking yourself "what does my Georgia assessment notice mean," this guide walks each of those eight fields in the order they appear on the paper, explains how the county arrived at the number, and shows what the number does to your eventual tax bill. It's a decoder, not an action plan. If you already know what the numbers mean and you want to act, start with the companion piece Just Got Your Georgia Assessment Notice? Here's What to Do First, which walks the 45-day response window and appeal options.
Throughout every section, the same hypothetical homeowner carries the math. It's an owner-occupied single-family home in unincorporated Gwinnett County with last year's fair market value of $380,000 and this year's fair market value of $400,000, a standard state homestead exemption, and Gwinnett's 2025 total millage rate of 34.86 mills. You'll see every field in the notice flow from those two starting numbers.
Previous year fair market value is the dollar figure the county's Board of Tax Assessors placed on your property as of January 1 of last year, reprinted on this year's notice so you can see the year-over-year change at a glance. Georgia counties pull it straight from their own prior-year tax digest record for your parcel, which is why it won't match a recent Zillow estimate or your purchase price. For the home we're tracking, the previous year fair market value prints as $380,000. This number isn't part of any current-year calculation, so changing it after the fact doesn't move your bill; it exists only as a reference anchor for the current year's increase.
Current year fair market value is the county's latest estimate of what your property would sell for in an open market transaction as of January 1 of this year, and it's the single number every other line on the notice derives from. The county's Chief Appraiser sets it using mass appraisal models that compare recent sales, building characteristics, and neighborhood trends. For our sample home, the county bumped fair market value from $380,000 to $400,000, a 5.3% increase. Every dollar you can knock off this number flows through the assessed value, the net taxable value, and the estimated tax, which is why it's the only field most homeowners ever challenge; the deeper mechanics of how that 40% ratio turns fair market value into taxable basis are covered in What Georgia's 40% Assessment Ratio Means for Your Appeal.
Assessed value is the legal taxable base Georgia uses to calculate property taxes, and it always equals 40% of your current year fair market value. Under O.C.G.A. 48-5-7(a), taxable tangible property in Georgia "shall be assessed at 40 percent of its fair market value," which is why every county prints the "(40%)" notation directly on the label. For the $400,000 home we're tracking, the assessed value is $160,000 ($400,000 x 0.40). A $10,000 reduction in fair market value drops the assessed value by exactly $4,000, and that $4,000 is what flows forward into every downstream field on the notice.
Exemptions Applied is the dollar amount your county subtracts from your assessed value before calculating tax, representing homestead, senior, disability, Conservation Use Valuation, or any other exemption you've already filed with your county tax commissioner. The county populates this line from its exemption roster; if you filed a homestead application by April 1 of a prior year and still live in the home, you'll see the standard Georgia state homestead of $2,000 against your assessed value, plus any local exemptions your county or city layers on top. For our sample home, the homeowner holds only the standard $2,000 state homestead, so Exemptions Applied prints as $2,000. A bigger exemption would reduce your net taxable value dollar for dollar, which is why it's worth confirming every exemption you qualify for is actually showing here, and why the detailed rules live in the dedicated guide to the Georgia homestead exemption.
If your county prints a Net Taxable Value line on your notice, it's the figure left over after exemptions are subtracted from assessed value, and it's the exact number your county multiplies by the millage rate to calculate your tax. Some Georgia notices label it Net Taxable Value, some label it Net Assessment, and some compress it into the tax calculation without a standalone line at all, because this field is a county-display convention rather than a field the statute strictly requires. For the home we're tracking, Net Taxable Value is $158,000 ($160,000 assessed value minus the $2,000 homestead exemption). Every dollar that comes off this number reduces your tax bill by the millage rate divided by 1,000, so at 34.86 mills each $1,000 of net taxable value you can remove saves about $34.86 on the bill.
Estimated Tax is the county's good-faith forecast of your property tax bill using this year's fair market value and last year's millage rate, and it isn't the same thing as the bill you'll receive in the fall. Georgia's notice statute requires the county to print a bold disclaimer that reads, verbatim, "The estimate of your ad valorem tax bill for the current year is based on the previous year's millage rate and the fair market value contained in this notice. The actual tax bill you receive may be more or less than this estimate. This estimate may not include all eligible exemptions." For our sample home, the estimate works out to $5,507.88 ($158,000 x 34.86 / 1,000). If the current year's rollback rate comes in lower than last year's millage rate, your real bill will be smaller than the estimate; the step-by-step derivation lives in How to Calculate Your Georgia Property Tax Bill (Simple Formula).
When present on your notice, the 299c Freeze Indicator is a flag showing whether your property's fair market value is legally frozen under Georgia's post-appeal protection, most commonly because you won an appeal in the prior year or two. Some Georgia counties display this as a simple "Y/N," some print "Frozen Until [year]," and many don't print it at all unless the freeze is active, because the field is a county-display convention derived from O.C.G.A. 48-5-299(c), not a line the statute requires on every notice. For our sample home, no prior appeal has been filed, so the indicator prints as "N" and has no effect on any number above it. If the indicator were active, the county would be barred from increasing your fair market value for the appeal year and the two successive tax years unless both parties agreed in writing, which is why the freeze is covered in depth in the 299c property tax freeze guide.
Millage Rate is the tax rate used to calculate your estimated tax, expressed in mills, where one mill equals one dollar of tax for every $1,000 of net taxable value. Your county, school district, city, and any special districts each set their own mill levies against the county tax digest, and the notice adds them together into a single total rate, almost always using the most recently adopted (prior year) figures. For our sample home in unincorporated Gwinnett County, the combined 2025 rate is 34.86 mills, which the county applies as $158,000 x 34.86 / 1,000 = $5,507.88. Because the notice uses the prior year's adopted rate, any cut (or increase) the taxing authorities vote in for the current year will shift your actual bill above or below the estimate; the full mechanics of how these rates are set and change year to year are covered in How Millage Rates Work in Georgia (And Why They Change).
Read in order, the eight fields form a single arithmetic chain. Current year fair market value ($400,000) times the 40% assessment ratio becomes assessed value ($160,000). Assessed value minus exemptions applied ($2,000) becomes net taxable value ($158,000). Net taxable value times the millage rate (34.86 mills) divided by 1,000 becomes estimated tax ($5,507.88). The previous year's fair market value sits above the chain as a reference point, and the 299c freeze indicator sits beside it as a status flag. Once you can trace that chain on your own notice, you understand exactly which lever moves which number, and you can decide with clear eyes whether this year's valuation is worth challenging. If your fair market value looks high, a full evidence packet (the core of the $79 Do-It-Yourself Appeal Kit) or a contingency-based Full-Service Appeal is the path to try to lower it. If the number reads as fair, the notice is a receipt, not a to-do list.