Which Georgia counties does AppealAlly serve?

AppealAlly serves all 159 Georgia counties. Our analysis pulls assessment data and comparable sales from the county where your property is located, so the same process works whether you live in Fulton, Gwinnett, Cobb, DeKalb, Forsyth, Cherokee, or any of the smaller rural counties. Metro Atlanta counties have the most comparable-sales data and the highest appeal volumes, so those appeals tend to be the most evidence-rich. Enter your address to see the data we have for your specific county.

When is the property tax appeal deadline in Metro Atlanta counties?

Every Georgia county mails its annual assessment notices on its own schedule, and you have 45 days from the date printed on your notice to file a PT-311A appeal. Metro Atlanta counties mail notices in spring or early summer, and the dates shift from year to year, so most appeal deadlines fall in late spring or summer. The 45-day clock starts on the notice date, not the date you receive it in the mail, so the actual deadline can arrive faster than expected. The date printed on your notice controls. Confirm with your county before you file, or check your specific county guide linked above or enter your address for your estimated deadline.

How are property tax millage rates set in Georgia?

Georgia property tax bills are calculated by subtracting any exemptions from the assessed value, dividing by 1,000, and multiplying by the total millage rate. Assessed value is 40% of the county's estimate of fair market value under O.C.G.A. section 48-5-7. The millage rate is set each year by three separate taxing authorities: the county commission (for county services), the local school board (usually the largest component), and the city council if the property is inside a municipality. Georgia law sets no year-over-year limit on millage increases beyond any maximum rate fixed by law. Instead, a county, school board, or city that proposes a rate above its rollback rate (the rate that would raise the same revenue from existing property as the year before) must first advertise a Notice of Property Tax Increase, issue a press release, and hold at least three public hearings before adopting it. A successful appeal lowers your assessed value, which usually lowers what you owe, even though the millage rate itself does not change.

What is the Board of Equalization versus arbitration?

When you file your appeal, you choose where it goes if the county does not settle it. The Board of Equalization (BOE) is the default: a three-member panel of local citizens hears your case at no cost, and you can take its decision to Superior Court if you disagree. Arbitration is an alternative for disputes about value only: it is non-binding, it requires a certified appraisal of your property that you pay for, and you may owe the arbitrator's fee if the county's value is closer to the arbitrator's finding. A hearing officer is a third option for non-homestead real property, such as a rental or second home, with a fair market value over $500,000; a homestead never qualifies. Most Georgia homeowners choose the BOE because it has no out-of-pocket cost. In Gwinnett County's 2025 tax year, 82.2% of closed appeals received a reduction, most of them settled with the Board of Assessors before any hearing (source: Gwinnett County Board of Assessors FOIA release of 20,229 appeals).

Do all Georgia counties allow online property tax appeals?

No, but every county accepts the statewide PT-311A form by mail or in person. Larger counties including Fulton, Gwinnett, Cobb, and DeKalb also offer online appeal portals, and some accept emailed PDF submissions. Many smaller and rural counties are still paper-only, though some accept appeals online or by email. Because the mailed PT-311A is valid statewide, you never have to depend on a county portal being available. With our Full-Service Appeal, we handle the filing channel for you in every Georgia county we serve.

Georgia County Property Tax Guides

Property taxes for every Georgia county: appeal deadline, tax rate, and assessor contact. Find your county and see how much you could save.

Browse property tax guides for all Georgia counties below. Each guide includes local tax rates, appeal deadlines, assessor contact information, and tips to reduce your property tax bill.

Metro Atlanta Counties: Where We See the Most Appeals

Metro Atlanta counties reassess property values almost every year, and appeal deadlines usually fall in late spring or summer, depending on when each county mails its annual assessment notice. The six counties below cover the bulk of the homeowners we help in Georgia.

Fulton County

Fulton assesses more than 320,000 residential parcels and consistently ranks among the busiest Georgia counties for appeals. Notices usually arrive in late spring or early summer, with a 45-day filing window. Read the Fulton County property tax appeal guide for deadline specifics and the PT-311A form walkthrough.

Gwinnett County

Gwinnett is the most data-rich county we cover. Based on a FOIA release of 20,229 Gwinnett appeal outcomes from the 2025 tax year, 82.2% of closed appeals received a reduction, most of them at the assessor review, and the median reduction among appeals that won was $15,600 in fair market value (source: Gwinnett County Board of Assessors, 2025 tax year). See the Gwinnett County property tax appeal guide for the full breakdown.

Cobb County

Cobb notices usually mail in late spring or early summer, with a 45-day appeal window. The Cobb Board of Tax Assessors accepts both PT-311A filings and online appeals through the county portal. Review the Cobb County property tax appeal guide for comparable-sales evidence tips.

DeKalb County

DeKalb homeowners usually receive assessment notices in late spring or early summer, with appeals due 45 days after the mailing date. DeKalb uses a three-track appeal process (Board of Equalization, hearing officer, or arbitration). The DeKalb County property tax appeal guide explains which track fits which situation.

Clayton County

Clayton usually mails notices in late spring or early summer; the date printed on your notice controls. The Clayton County property tax appeal guide walks through the filing checklist and what evidence the Clayton assessors look for.

Forsyth County

Forsyth is one of the fastest-growing counties in the metro, and fair market values shift quickly from subdivision to subdivision. Notices usually mail in late spring or early summer. See the Forsyth County property tax appeal guide for neighborhood-level comparable-sales strategy.

Results may vary. County success rates, deadlines, and reduction amounts reflect historical data from the cited sources and do not guarantee the outcome of any individual appeal. Every property is evaluated on its own evidence, and appeal decisions are made by the county Board of Equalization.

All County Guides

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Frequently Asked Questions

Which Georgia counties does AppealAlly serve?: AppealAlly serves all 159 Georgia counties. Our analysis pulls assessment data and comparable sales from the county where your property is located, so the same process works whether you live in Fulton, Gwinnett, Cobb, DeKalb, Forsyth, Cherokee, or any of the smaller rural counties. Metro Atlanta counties have the most comparable-sales data and the highest appeal volumes, so those appeals tend to be the most evidence-rich. Enter your address to see the data we have for your specific county.
When is the property tax appeal deadline in Metro Atlanta counties?: Every Georgia county mails its annual assessment notices on its own schedule, and you have 45 days from the date printed on your notice to file a PT-311A appeal. Metro Atlanta counties mail notices in spring or early summer, and the dates shift from year to year, so most appeal deadlines fall in late spring or summer. The 45-day clock starts on the notice date, not the date you receive it in the mail, so the actual deadline can arrive faster than expected. The date printed on your notice controls. Confirm with your county before you file, or check your specific county guide linked above or enter your address for your estimated deadline.
How are property tax millage rates set in Georgia?: Georgia property tax bills are calculated by subtracting any exemptions from the assessed value, dividing by 1,000, and multiplying by the total millage rate. Assessed value is 40% of the county's estimate of fair market value under O.C.G.A. section 48-5-7. The millage rate is set each year by three separate taxing authorities: the county commission (for county services), the local school board (usually the largest component), and the city council if the property is inside a municipality. Georgia law sets no year-over-year limit on millage increases beyond any maximum rate fixed by law. Instead, a county, school board, or city that proposes a rate above its rollback rate (the rate that would raise the same revenue from existing property as the year before) must first advertise a Notice of Property Tax Increase, issue a press release, and hold at least three public hearings before adopting it. A successful appeal lowers your assessed value, which usually lowers what you owe, even though the millage rate itself does not change.
What is the Board of Equalization versus arbitration?: When you file your appeal, you choose where it goes if the county does not settle it. The Board of Equalization (BOE) is the default: a three-member panel of local citizens hears your case at no cost, and you can take its decision to Superior Court if you disagree. Arbitration is an alternative for disputes about value only: it is non-binding, it requires a certified appraisal of your property that you pay for, and you may owe the arbitrator's fee if the county's value is closer to the arbitrator's finding. A hearing officer is a third option for non-homestead real property, such as a rental or second home, with a fair market value over $500,000; a homestead never qualifies. Most Georgia homeowners choose the BOE because it has no out-of-pocket cost. In Gwinnett County's 2025 tax year, 82.2% of closed appeals received a reduction, most of them settled with the Board of Assessors before any hearing (source: Gwinnett County Board of Assessors FOIA release of 20,229 appeals).
Do all Georgia counties allow online property tax appeals?: No, but every county accepts the statewide PT-311A form by mail or in person. Larger counties including Fulton, Gwinnett, Cobb, and DeKalb also offer online appeal portals, and some accept emailed PDF submissions. Many smaller and rural counties are still paper-only, though some accept appeals online or by email. Because the mailed PT-311A is valid statewide, you never have to depend on a county portal being available. With our Full-Service Appeal, we handle the filing channel for you in every Georgia county we serve.