How to Appeal Your Property Tax in Georgia
If your Georgia assessment notice arrived with a number that feels off, you have the right to appeal — and you can do it yourself, without hiring anyone. Georgia's appeal process runs through your county Board of Assessors and, if needed, the Board of Equalization (your county's independent hearing panel). This guide walks you through each step. This is general information, not legal or tax advice. Rules and deadlines vary by county — verify current details with your county Board of Assessors.
Step 1 — Check Your Notice of Assessment
Georgia counties mail assessment notices (called a Notice of Assessment or Change of Assessment) typically in the spring, though timing varies by county. When yours arrives, check the assessed value listed and the appeal deadline printed on the notice. Georgia law generally gives you 45 days from the date on the notice to file an appeal, but confirm that window with your county Board of Assessors — do not rely on any date you read online, including here.
Also compare the notice value to what similar homes in your neighborhood have sold for recently. If recent comparable sales suggest a lower market value, that gap is your starting point.
Step 2 — Understand Your Grounds for Appeal
Georgia appeals typically rest on one of two arguments:
- Overvaluation: your assessed value exceeds the fair market value of your property, supported by recent comparable sales (comps) — three to five sales from the past year, similar in size, age, and condition.
- Uniformity (taxability): your property is assessed higher than similar properties in your county, even if the absolute value might be defensible. This is sometimes called an equity argument.
Factual errors are also a valid reason to appeal — a wrong square footage, an extra bathroom the assessor never saw, or a structure that no longer exists can all inflate your value. Pull your property record card from the county assessor's website or office and verify the details.
Step 3 — File Your Appeal
File a written appeal with your county Board of Assessors before the deadline on your notice. Most counties provide a standard appeal form on their website; some accept an informal written letter that states your name, property address, parcel ID, the value you believe is correct, and your reason. Keep a copy and, if mailing, send it certified so you have proof of delivery.
When you file, Georgia generally gives you three hearing options: the Board of Equalization (a free county panel), a hearing officer (used in larger counties for properties above certain value thresholds), or binding arbitration. For most residential homeowners, the Board of Equalization is the default and most accessible path. Confirm which options apply in your county.
Step 4 — Build Your Evidence
Strong evidence is what actually moves the Board of Equalization. Gather:
- Three to five comparable sales from the prior year — pulled from public deed records or your county's property search portal, matched on square footage, lot size, age, and condition.
- Your property record card, annotated with any factual errors (wrong bedrooms, finished basement listed as unfinished, etc.).
- Photos documenting condition problems — deferred maintenance, water damage, foundation issues — that the mass-appraisal process may not reflect.
- A simple summary grid: each comp's address, sale date, sale price, square footage, and price per square foot — one page, easy to read fast.
Step 5 — Attend Your Board of Equalization Hearing
The Board of Equalization is a panel of county residents — not assessor employees — trained to hear appeals. Hearings are relatively informal. You present your evidence; the assessor's office presents theirs. The board then issues a written decision.
If the board's decision still doesn't satisfy you, further appeal to Superior Court is possible — but that level typically warrants professional guidance. A reduction at any stage is not guaranteed and depends entirely on the strength of your evidence versus the assessor's data.
Check Exemptions Before — or Alongside — Your Appeal
An appeal challenges your assessed value. Exemptions reduce it separately, with no hearing required — Georgia's homestead exemption is the most common, and additional exemptions exist for seniors, veterans, and disabled homeowners. Check your county assessor's website for applicable exemptions and their deadlines.
The 40% Rule: Georgia's Own Measure of Whether Your County Assesses Correctly
Georgia law sets assessed value at 40% of fair market value, and the Department of Revenue measures every county against that figure by comparing assessments to actual sale prices. The resulting level of assessment has to land between 36% and 44%. The department publishes the number for all 159 counties, and the spread is wide: from 27.25% in Berrien County to 40.68% in Bacon County, with a median of 38.00%. 47 counties sit below the 36% floor.
| County | Level of assessment | Rank of 159 | County millage 2024 | School millage 2024 |
|---|---|---|---|---|
| Fulton County | 36.11% | 51 | 8.870 | 17.080 |
| DeKalb County | 38.02% | 82 | 10.002 | 22.880 |
| Gwinnett County | 38.89% | 116 | 6.950 | 19.100 |
| Cobb County | 38.32% | 97 | 8.460 | 18.700 |
| Clayton County | 38.75% | 111 | 15.266 | 19.600 |
| Chatham County | 37.09% | 61 | 10.518 | 17.481 |
| Henry County | 39.48% | 142 | 7.042 | 20.000 |
Why the level matters for your appeal. The statute says 40%, but almost no county actually averages 40%. Where the county-wide level sits below it — Fulton at 36.11%, for instance — a home assessed at the full 40% of what it would sell for is carried higher than the typical property around it. That is the uniformity argument, and in Georgia it is supported by a figure the state publishes rather than one you have to construct. The ranks above run from lowest level to highest, so a low rank means the county assesses conservatively on average.
The State Reviews Counties — and Over Half of Those Reviewed Failed
Georgia does not simply publish assessment levels; the Revenue Commissioner reviews a third of the counties each year against three standards: the level of assessment, the coefficient of dispersion (which has to stay at or below 15% for residential property), and the bias ratio measuring whether cheaper or more expensive homes are assessed more accurately. A county that repeats a deficiency pays a penalty of $5 per taxable parcel.
In the review covering the 2023 digest, 53 counties fell in the review year and 28 of them were cited for deficiencies — more than half. 3 counties were assessed the per-parcel penalty for failing to correct problems carried over from the previous review. The deficiencies cited most often concerned the level or uniformity of residential assessments, meaning the state itself recorded that homes in those counties were not being assessed consistently.
What to take from this. It is worth being precise about what the review proves and what it does not. It does not show that your assessment is wrong, and a county passing review does not mean every assessment in it is correct — the standards are county averages. What it does establish is that assessment error in Georgia is common enough that the state measures it, names the counties, and fines the repeat offenders. An appeal is not an accusation of bad faith; it is the mechanism the same system provides for correcting the cases the averages hide.
Georgia Property Tax Appeals: Common Questions
How long do I have to appeal in Georgia?
45 days from the date on your Annual Notice of Assessment. The deadline is set by the date printed on the notice, not by a fixed calendar date, and it is the same statewide. Georgia sends an assessment notice every year, which means the window opens annually whether or not your value changed.
Which appeal route should I choose?
Georgia gives you three: the county Board of Equalization, binding arbitration, or a hearing officer for higher-value non-homestead property. The Board of Equalization is free and the normal route for a home. Arbitration requires a certified appraisal and shifts costs to the losing side, so it suits cases where you already hold strong valuation evidence.
What does the 40% assessment level actually mean on my bill?
Your taxable value is 40% of fair market value, less exemptions, and the millage rate applies to that. So a mill is a dollar per $1,000 of assessed value — on a home with a $400,000 fair market value, the assessed value is $160,000 before exemptions, and each mill costs $160 a year.
Is there a fee to appeal?
No fee for the Board of Equalization route. Arbitration requires you to pay for a certified appraisal up front, and the cost of the arbitrator falls on whichever side loses, so that route carries real financial exposure.
Does Georgia freeze my value after a successful appeal?
Yes, with conditions. When an appeal reduces your value, that value is generally held for the two following tax years, provided no substantial change is made to the property. This makes a successful Georgia appeal worth more than a single year's saving — one of the stronger provisions in any state.
Can my assessment be raised because I appealed?
The board decides on the evidence and is not limited to your figure, so an increase is possible in principle. What makes it unlikely in practice is that the county has to defend any value it asserts with the same kind of evidence it demands from you.
Sources. Levels of assessment, millage rates and the review results are taken from the Georgia Department of Revenue, 2024 Property Tax Administration Annual Report: the millage rate tables for county and school levies, the published average level of assessment by county (average median ratio), and the table of review-year counties cited for deficiencies. Ranks and the median are computed across all 159 Georgia counties.