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Lower Your Georgia Property Taxes — County Rate Guide

Georgia property tax rates vary widely by county and tax district. In metro Atlanta, 2025 millage totals range from about 25 to over 43 mills, and city add-ons push bills even higher. Compare rates correctly and understand what drives your bill.

Key Takeaways

  • **Georgia's effective property tax rate averages 0.90%**, below the 1.02% national average. But rates vary significantly by county, from under 0.50% to over 1.50%.
  • **Georgia taxes property at 40% of fair market value (FMV)**, not full value. A $400,000 home has a $160,000 taxable assessed value before exemptions.
  • **Fulton County's combined millage rate exceeds 40 mills** in some districts, making it one of the highest-tax areas in the state.
  • **Millage rates vary within counties** based on city, school district, and special taxing districts. Two homes in the same county can have different tax bills.
  • **HB 581's floating homestead exemption (2025)** caps annual assessment increases at the inflation rate for homesteaded properties that did not opt out.

# Georgia Property Tax Rates by County: 2026 Comparison Guide

If you’re searching for Georgia property tax rates by county, you’re probably trying to answer one question: “Why does my bill feel so much higher than my friend’s… when our homes are similar?”

In Georgia, your property tax bill is driven by two moving parts:

This guide gives you a clear, data-first way to compare counties heading into 2026, understand what the numbers actually mean, and avoid the most common “rate comparison” mistakes.

Summary

Start here: what “property tax rate” means in Georgia

Most homeowners say “tax rate” when they mean the total set of millage rates that apply to their home. That total is made up of parts:

Georgia’s Department of Revenue notes that the tax rate in each county is set annually by the governing authority for the taxing jurisdiction and by the Board of Education, and that one mill is one dollar per $1,000 of assessed value. (See Property Tax Millage Rates – GA DOR)

The quick math (so the table below actually helps you)

To translate mills into something that feels real, use this simplified estimate:

Example: You have a $400,000 home and your assessed value is $160,000. If your total millage is 30.13 mills, your base tax estimate is:

160,000 × (30.13 ÷ 1,000) ≈ $4,821 (before exemptions and credits)

That number will move a lot depending on exemptions like homestead, your exact tax district, and whether you’re inside a city.

The “county-by-county” table you actually want (and how to use it)

Because Georgia has cities and special districts, a single “county rate” won’t perfectly describe every homeowner’s bill. So for comparisons, the cleanest starting point is:

Below is a metro snapshot you can use as a baseline comparison. If you don’t live in one of these counties, jump to the “How to find your exact rate” section.

Metro Atlanta county totals (2025 adopted rates; useful baseline for 2026 planning)

These county totals are listed by the City of Marietta as a quick reference for 2025. Treat them as a baseline for comparing counties, then confirm your exact total for your tax district (unincorporated vs. city). (Source: Marietta 2025 Millage Rates)

City vs. county: quick examples that show why totals differ

The same Marietta reference list shows city totals that include city mills on top of county/school components. Here are a few examples that make the “city add-on” visible. (Source: Marietta 2025 Millage Rates)

If you’re comparing “Cobb vs. DeKalb” but one person is in Marietta and the other is unincorporated, you’re not comparing the same thing.

The Big Four, explained (Fulton, Cobb, DeKalb, Gwinnett)

You asked for Fulton, Cobb, DeKalb, and Gwinnett prominently. Here’s what matters most for each county when you’re trying to understand and compare the numbers.

Cobb County (Cobb County bills: county + schools; city adds on top)

Cobb publishes a clear “Cobb County Bills” breakdown. For the unincorporated area, the total is 30.13 mills made up of:

(Source: Cobb County 2025 Millage Rates PDF)

This is a good example of why schools matter: 18.70 out of 30.13 is the majority of the total.

Cobb also notes that millage rates are typically posted in late July or early August when local taxing authorities approve them—helpful context for when 2026 rates will appear. (See Cobb Tax – Millage Rates)

Gwinnett County (many districts; “county-only” is not the full story)

Gwinnett’s Tax Commissioner publishes a table of millage rates by tax district (unincorporated and cities). That’s the best way to avoid comparing the wrong totals.

For a typical unincorporated Gwinnett tax district, the total shown is 34.86 mills, which includes:

(Source: Gwinnett Tax Commissioner – Millage Rates)

A key takeaway: when you hear “Gwinnett’s millage rate is X,” ask whether that’s the county-only rate or the total bill rate that includes schools and services.

DeKalb County (high totals; schools and county services drive most of it)

DeKalb’s Tax Commissioner publishes a 2025 table that includes unincorporated and many city/special district combinations.

Frequently Asked Questions

What is the property tax rate in Georgia?
Georgia's average effective property tax rate is approximately 0.90%, which is below the national average of 1.02%. However, effective rates vary widely by county. Georgia does not tax property at full market value. Instead, the state uses a 40% assessment ratio, meaning a $400,000 home has a taxable assessed value of $160,000. Your actual tax is calculated by multiplying that assessed value by your local millage rate.
Which Georgia county has the highest property tax rate?
Among metro Atlanta counties, DeKalb County has one of the highest combined millage rates at 43.590 mills for 2025. Fulton County's rate exceeds 40 mills in some City of Atlanta districts. However, a higher millage rate does not always mean a higher tax bill, because assessed property values also differ between counties. Rural Georgia counties generally have lower millage rates but may assess property differently in practice.
How are property taxes calculated in Georgia?
Georgia property taxes use the formula: Fair Market Value x 40% (assessment ratio) x total millage rate / 1,000. For example, a home with a $500,000 fair market value has an assessed value of $200,000. At a combined 30-mill rate, the annual tax would be $6,000 before any exemptions. Homestead exemptions, senior exemptions, and other credits reduce the taxable amount further.
What is a millage rate?
A millage rate is a property tax rate expressed as dollars per $1,000 of assessed value. One mill equals $1 per $1,000. Your total millage rate is the sum of separate rates from your county government, school district, city (if applicable), and any special taxing districts. In metro Atlanta, combined millage rates range from approximately 25 mills (Paulding County) to over 43 mills (DeKalb County).
How can I lower my property taxes in Georgia?
Three main strategies can reduce your Georgia property taxes. First, file a property tax appeal if your assessed value exceeds your home's fair market value. Data from Gwinnett County shows 82.2% of appeals received a reduction in 2025. Second, apply for every exemption you qualify for, including the standard homestead exemption and any senior, veteran, or disability exemptions. Third, a successful appeal triggers a three-year assessment freeze under O.C.G.A. 48-5-299(c), locking in your lower value.

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