Georgia Property Tax Appeal Deadlines
For many Georgia homeowners, the annual Notice of Assessment does not feel urgent at first.
It may arrive in the mail, get set aside with other paperwork, and sit on the kitchen counter for a week or two before anyone looks closely at it. That is understandable. Life is busy, and the notice does not always look dramatic.
But in many cases, that notice starts one of the most important clocks in the property tax appeal process.
In Georgia, homeowners generally have 45 days to file a written appeal after the county sends the Annual Notice of Assessment. Many notices also list a specific last date to file, and that printed deadline is the one homeowners should treat as controlling. If the deadline is missed, appeal rights for that year are usually lost, and many counties state they cannot extend the filing period.
That is why one of the most common mistakes is also the simplest:
Not opening the mail soon enough.
For homeowners in Metro Atlanta and across Georgia, understanding what the notice means, what it does not mean, and what to do next can make the difference between preserving your rights and losing the chance to appeal.
First, the Notice of Assessment is not the tax bill
This point causes a lot of confusion.
The Annual Notice of Assessment is not a bill demanding payment. It is the county’s notice of its opinion of your property’s value for tax purposes. The actual tax bill usually comes later, after millage rates are set. State guidance and county materials repeatedly emphasize this distinction.
That matters because many homeowners do one of two things:
They either ignore the notice because it is not yet a bill, or they focus immediately on how high the taxes might be without first asking the more important question:
Does the county’s value appear reasonable?
A property tax appeal is generally about value, not simply frustration over the amount of taxes owed. Counties such as Fulton, Carroll, and Paulding make that distinction clearly in their guidance.
How the 45-day deadline works
The simplest and safest way to explain the deadline is this:
You generally have 45 days from the date your county mails or sends the Annual Notice of Assessment to file a written appeal with the county Board of Tax Assessors. Many counties also print a specific last date to file directly on the notice, and homeowners should rely on that printed date. For mailed appeals, many counties require a USPS postmark by the deadline. Some counties with online filing portals treat the deadline as midnight on the final day.
In other words, the deadline is not based on when you finally open the envelope or when you get around to dealing with it.
That is why it is wise to review the notice promptly and calendar the deadline immediately.
What to do first when the notice arrives
If you open your notice and think the value may be too high, the first step is not to panic.
It is to slow down and look for two things:
the Notice Date
the Last Date to File an appeal
The Georgia Department of Revenue’s sample assessment notice includes both, and counties such as Fulton and Gwinnett direct homeowners to follow the deadline printed on the notice.
Once you locate that deadline, write it down, put it on your calendar, and work backward from there.
Even if you are still unsure whether you want to appeal, knowing the deadline gives you room to think clearly.
Where the appeal goes
A Georgia property tax appeal is generally filed with the county Board of Tax Assessors, not the Department of Revenue. State guidance is explicit on this point. The Department of Revenue provides forms and general information, but the appeal itself goes to the county.
That distinction matters because homeowners sometimes contact the wrong office.
The Tax Commissioner usually handles billing and collection.
The Tax Assessor or Board of Tax Assessors handles value and appeals.
If someone is upset and starts by calling the office that sends tax bills, they may not actually be taking the step needed to preserve appeal rights.
A phone call is not the same as filing an appeal
This is another important point.
Many homeowners understandably want to call the county and explain why they think the value is wrong. Sometimes those conversations may be helpful. But a phone call is not the same thing as filing a timely written appeal.
County guidance repeatedly describes the appeal as a written filing, and multiple counties warn that deadlines cannot be extended.
So if preserving your rights matters, do not assume that calling, leaving a message, or complaining to the wrong office “gets the process started.”
It may not.
Filing methods vary by county
This is where the process becomes more local.
Georgia has a statewide framework, but counties differ in how they accept appeals.
For example:
Douglas County allows filing by mail, in person, or online, but states that appeals are not accepted by fax or email. It also warns homeowners to file early because system issues do not extend the deadline.
Paulding County is more flexible and states that written appeals may be submitted by email, mail, fax, or hand delivery.
Coweta County states that appeals must be filed within 45 days, that the deadline on the notice cannot be extended, and that appeals may be filed online or in person.
Cobb County follows the statewide rule that valuation appeals must be sent to the Board of Tax Assessors and postmarked no later than 45 days from the mailing date of the notice.
Carroll County explains that appeals are filed with the Board of Tax Assessors within 45 days and may be based on value, uniformity, or taxability.
That variation is important enough to repeat:
Do not assume every county accepts appeals the same way.
The safest approach is to follow the instructions on your notice and verify the current filing method on your county assessor’s official website. Keep proof of submission, whether that means a confirmation page, timestamp, certified mail receipt, or postmark.
What can be appealed?
For many homeowners, the main issue is value.
They believe the county’s estimate is too high compared with what the property would likely sell for. That is often the practical starting point.
Under state guidance, appeals may also involve issues such as uniformity, taxability, or exemption denial, and the PT-311A appeal form requires the owner to identify the grounds and select an appeal path such as Board of Equalization, arbitration, or hearing officer.
Most homeowners do not need to master every procedural detail on day one. But it helps to know that an appeal is more formal than simply saying, “My taxes went up too much.”
A large increase does not always mean the county is wrong
This is worth saying plainly.
A sharp increase in assessed value can absolutely deserve review. Sometimes counties use mass appraisal methods that do not fully capture a property’s specific condition, setting, or market context. Unique properties, larger tracts, and homes that do not fit neatly into surrounding sales patterns may deserve a closer look.
But a large increase by itself does not automatically mean the value is wrong.
Sometimes a property has simply been under-assessed for years. Sometimes the market has moved more than the owner realized. Sometimes the number feels shocking as a percentage, but still falls within a reasonable range of value.
That is why the better question is not:
“Did my taxes jump a lot?”
It is:
“Does the county’s value appear supportable?”
That shift in mindset usually leads to a better decision.
What kind of information helps
Several counties encourage homeowners to include information or documentation that supports their position, even if they are not using formal appraisal language. DeKalb, Coweta, and Paulding all provide guidance encouraging owners to explain their value opinion or include documents that affect value.
For many homeowners, that might include:
recent comparable sales
information about condition issues
facts showing the property differs from nearby homes
records that suggest the county’s assumptions are inaccurate
A future article can go deeper into evidence, but for now the important point is simple:
A successful appeal is usually supported by facts, not just frustration.
Common mistakes to avoid
If you want to protect your appeal rights, a few mistakes are especially worth avoiding.
Do not assume the notice is just another piece of routine mail.
Do not confuse the assessment notice with the later tax bill.
Do not assume a phone call counts as an appeal.
Do not send the appeal to the wrong office.
Do not assume every county accepts email, fax, or online filing the same way.
Do not wait until the last moment and assume a website problem will buy more time.
Do not assume that a big increase automatically proves the value is wrong.
Those are the kinds of missteps that can quietly cost homeowners the chance to be heard.
A final thought for homeowners
For many people, the hardest part of the process is not the form itself.
It is recognizing that the notice matters before the deadline slips away.
Georgia’s property tax appeal system gives homeowners a real opportunity to question a county’s value. But the process starts with timing. Once the notice arrives, the clock is already running, and in many counties that clock is enforced strictly.
If you believe your property’s assessment may not reflect the market, the safest first step is usually to review the notice immediately, calendar the deadline, and decide promptly whether the value deserves closer examination.
If you have questions about the appeal process or need an independent opinion of value, Real Estate Appraisal Services, Inc. may be able to help. Trusted Values is the public brand of Real Estate Appraisal Services, Inc., serving homeowners across much of Metro Atlanta. If you would like to discuss your situation, you may contact us through the website’s Request an Appraisal form.