Lower Your Gwinnett County Property Taxes

AppealAlly helps Gwinnett County homeowners challenge unfair property tax assessments with property-specific evidence, a signed PT-311A appeal form, and county-specific filing guidance. Our customers’ median estimated savings is $699/year, or about $2,097 over three years if the Georgia 299(c) freeze holds the lower value. Get a free Gwinnett savings estimate in about one minute with no commitment.

Why Gwinnett appeals are time sensitive: Gwinnett County typically mails annual Notices of Assessment in spring, and the date shifts from year to year. You have 45 days from the date printed on your notice to file an appeal with the Gwinnett County Board of Tax Assessors. The clock starts the day the notice was mailed, not the day you received it. Miss it and your assessment stands for the year. AppealAlly tracks Gwinnett deadlines automatically and prepares the signed PT-311A so you can file before the 45-day window closes.

Source: Gwinnett County Tax Assessor; O.C.G.A. section 48-5-311(e)(2)(A). Results may vary. The $699/year figure is the median of estimated first-year savings across AppealAlly customers as of July 2026; it is an estimate, not a result.

Why Appeal in Gwinnett County

• High reduction rate. Based on 20,229 Gwinnett County appeals from the 2025 tax year, 82.2% of closed appeals received a reduction, most of them at the assessor review (source: Gwinnett County Board of Assessors FOIA release).
• Three-year freeze. Under O.C.G.A. section 48-5-299(c), when your appeal reduces your value, by a written agreement signed with the Gwinnett County Board of Tax Assessors or by a decision of the Board of Equalization, a hearing officer, an arbitrator, or Superior Court, Gwinnett County generally cannot raise that value for the appeal year plus the next two years, subject to a few statutory exceptions.
• The Board cannot raise your home’s value. The Board of Equalization, a hearing officer, or an arbitrator can lower your home’s value but cannot raise it above the county assessors’ figure, unless your value is already frozen by an earlier appeal. Under HB 581 (effective January 1, 2025), the statute's 3-year freeze attaches only when an appeal produces an actual reduction.
• No filing fee. Filing the PT-311A with the Gwinnett County Board of Tax Assessors is free at every stage of the appeal, including the Board of Equalization hearing.

How AppealAlly Works for Gwinnett Homeowners

1. Enter your Gwinnett address. We look up your property details, current assessed value, and an estimated appeal deadline based on county notice dates.
2. Review your savings estimate. Our algorithm pulls recent comparable sales in your Gwinnett neighborhood, identifies the strongest comps, and projects your potential year-one and three-year savings.
3. Pick a plan and file. Choose the Essentials DIY Kit ($79) for a complete evidence packet you mail yourself, or Full-Service Appeal (30% of first-year savings plus $25 if the county grants the 3-year freeze, $0 upfront) where our team handles filing and the Board of Equalization hearing.

Start your free Gwinnett property tax analysis now

Pricing for Gwinnett County Appeals

AppealAlly offers two appeal plans in Gwinnett, with statewide pricing that does not change based on your county.

• Essentials DIY Kit: $79 flat. Complete appeal materials with a signed PT-311A, evidence tables, charts, and maps behind every argument we make, property-specific appeal arguments, and a step-by-step Gwinnett filing guide with a checklist for your hearing. Backed by a 100% money-back guarantee if you use our evidence in your appeal and Gwinnett does not reduce your assessed value.
• Full-Service Appeal: 30% of first-year savings*, $0 upfront. Our team files your PT-311A, monitors the deadline, handles your appeal with the Gwinnett Board of Equalization as your agent so there is nothing you need to attend, and charges its 30% fee only if your assessment is reduced. A one-time $25 fee applies if the county grants the 299(c) three-year freeze.

*Savings are estimated from the effective tax rate on the most recent tax bill we have for your property, or from your county's published tax rate if we have no usable bill. If your actual first-year savings turn out lower, send us your tax bill and we'll refund the difference.

See full plan details at our pricing page or jump directly to pricing on this page.

Gwinnett County Property Tax Resources

• Gwinnett County Property Tax Appeal Guide. The complete walkthrough of the Gwinnett appeal process, deadlines, and evidence requirements.
• Georgia Property Tax Appeal Statistics. Breakdown of the 20,229 Gwinnett appeals from the 2025 tax year, including win rates and median reductions.
• How to File the PT-311A. Plain-language guide to the statewide property tax appeal form used in Gwinnett.
• Free Gwinnett Savings Estimate. Personalized estimate based on your specific property in about one minute.

Frequently Asked Questions

When are Gwinnett County assessment notices mailed?

Gwinnett County mails annual Notices of Assessment in spring; in recent years notices have gone out between early April and late May. You have 45 days from the date your notice was mailed to file an appeal. The date printed on your notice controls. Confirm with your county before you file.

When is the deadline to appeal my Gwinnett property taxes?

You have 45 days from the date Gwinnett County mailed your annual Notice of Assessment to file an appeal. Gwinnett mails notices in spring, so the deadline usually falls in late spring or early summer. The clock starts the day the notice was mailed (printed on your notice), not the day you opened the envelope. Miss it and you wait until next year's notice. The deadline cannot be extended for any reason.

Will my property taxes go up if I lose the appeal?

Losing at the Board of Equalization cannot raise your value, with one exception. Under O.C.G.A. § 48-5-311(e)(9), the Board of Equalization, hearing officer, or arbitrator deciding a Gwinnett County real property appeal, such as one on your home, can lower the value but cannot raise it above the value the county assessors set. The exception is a value already frozen by an earlier appeal: on an appeal filed while that freeze is in effect, the Board is not capped and could raise the value, so check with the county assessors' office before you file. That limit applies to the deciding body; the county assessors can still make changes or corrections to your value when they review your appeal. If you win a reduction, Georgia's "299(c) freeze" (O.C.G.A. § 48-5-299(c)) generally keeps the county from raising the new value for the appeal year and the next two years, subject to a few statutory exceptions. Your tax bill can still change for reasons unrelated to your appeal, such as new tax rates or changes to your exemptions.

How much does it cost to appeal property taxes in Gwinnett?

Filing the PT-311A with the Gwinnett County Board of Tax Assessors is free. There is no filing fee at the Board of Equalization stage. AppealAlly offers two pricing tiers: DIY Essentials at $79 flat (you get property-specific evidence and filing guidance, then file yourself) or Full-Service Appeal at 30% of first-year savings only if we win, plus a one-time $25 fee if the county grants the 3-year freeze.

What is the 3-year property tax freeze in Georgia?

When your appeal reduces your home's value from the value on your annual notice, either through a written agreement signed by the Gwinnett County Board of Tax Assessors and you (or your representative) or through a decision by a Board of Equalization, hearing officer, arbitrator, or Superior Court, Gwinnett County cannot raise that value for three tax years (the year you appealed plus the next two successive years), unless you and the county agree otherwise in writing. For a reduction decided at a hearing, the freeze does not apply if you or your representative failed to attend the hearing or provide the Board of Equalization, hearing officer, or arbitrator with some written evidence supporting your opinion of value. Counties read that rule differently, and some require attendance. During those years the county can still change the value if an on-site inspection finds substantial changes to the property, errors in its records, or other factors that substantially affect its value. Filing a return at a different value ends the protection, and if you file a new appeal during those years, the Board is not capped on that appeal and could raise the value. House Bill 581, effective January 1, 2025, narrowed the statute so its freeze attaches only when the appeal produces an actual reduction. If your county records a freeze on a value that did not change, confirm with your county how it applies to future tax years.

What evidence do I need to win a Gwinnett property tax appeal?

A set of comparable sales of similar homes in your Gwinnett neighborhood (same area, similar size, age, condition) that closed in the 12 months before January 1 of the assessment year. The Gwinnett Board of Equalization weights closed sales heaviest.