Property Taxes in the Atlanta Metro (GA)

1. How Georgia property tax actually works

Georgia assesses real property at a flat 40% of fair market value (O.C.G.A. § 48-5-7) -- a statewide ratio fixed by state law, not something that varies from one county to the next. Each county's Board of Tax Assessors determines a property's fair market value, then applies that 40% ratio to arrive at the assessed value that local tax rates actually apply to. A $500,000 home in the Atlanta metro isn't billed as if it were worth $500,000: before any exemption, the taxable base is $200,000, and the homestead exemptions covered in Sections 2 and 3 typically reduce it further for an owner-occupant.

Local rates are set as millage rates (dollars of tax per $1,000 of assessed value) by several overlapping taxing authorities layered onto the same property at once: the county government, the county school system, and -- for an address inside an incorporated city -- that city's own government and, in a handful of cases, a separate city school system, each adopting its own millage rate through its own annual budget process. That's why two homes with identical market values can carry meaningfully different tax bills depending on which city, if any, and which school district they fall inside, independent of anything about the home itself. As with mill levies in other metros we cover, we deliberately don't publish a single "the millage rate is X" figure per county in Section 4 -- actual combined rates are set annually by each of these overlapping bodies and would be stale within a budget cycle.

Source: Georgia Department of Revenue, Property Tax Valuation (dor.georgia.gov); O.C.G.A. § 48-5-7.

2. Homestead exemptions and Georgia's new floating cap

Every Georgia homeowner who owns and occupies a property as their primary residence on January 1 of the tax year can apply for a homestead exemption -- the application must be filed with the county tax assessor's or tax commissioner's office by April 1 to apply to that tax year. State law sets a floor of a $2,000 exemption from state, county, and school ad valorem taxes (O.C.G.A. § 48-5-44), applied against the 40%-of-value assessed value from Section 1 -- but that statutory exemption doesn't apply to municipal (city) taxes, and nearly every county and city across the Atlanta metro layers its own additional, larger local homestead exemption on top of the state minimum through local legislation that genuinely varies address by address. Confirm your specific city's and county's actual current homestead exemption amounts directly with the relevant tax assessor's office -- $2,000 is a statutory floor, not what most Atlanta-metro homeowners actually see taken off their bill.

A second, newer, and more consequential layer sits on top of that: Georgia's House Bill 581, ratified by voters as a constitutional amendment on November 5, 2024 and effective starting with the 2025 tax year, created a statewide floating homestead exemption that caps the year-over-year growth in a homesteaded property's assessed value at the statewide inflation rate, rather than letting it rise with the full pace of market appreciation, even as the county's own valuation of the home keeps climbing underneath it. Cities, counties, and school systems were allowed to opt out of participating, by resolution after three public hearings, ahead of a March 1, 2025 deadline, and a large share did: statewide, jurisdictions covering roughly two-thirds of Georgia's counties and about 83% of its population had at least one local government or school system opt out, including the school systems in all five of Georgia's most populous counties -- Fulton, Gwinnett, Cobb, DeKalb, and Chatham -- with Gwinnett's and Cobb's general county governments opting out as well, largely because those two counties already had their own, separately enacted local floating exemptions in place. That patchwork is genuinely temporary: the 2026 HOME Act (Senate Bill 33) makes the inflation-based assessment cap mandatory statewide starting with the 2027 tax year, eliminating the local opt-out option entirely going forward. Confirm your specific jurisdiction's current participation status and your own property's assessed-value history directly with your county tax assessor before relying on this section for a specific address -- see Section 4 for what we could confirm county by county.

Sources: Georgia Department of Revenue, Property Tax Homestead Exemptions (dor.georgia.gov); O.C.G.A. § 48-5-44; Georgia General Assembly House Budget & Research Office, 2024 policy brief on HB 581 (legis.ga.gov); Association County Commissioners of Georgia (ACCG), HB 581 opt-out guidance; Tax Foundation analysis of Georgia Secretary of State HB 581 opt-out filings.

3. Senior, veteran & other exemptions

Beyond the standard homestead exemption, Georgia law authorizes several additional exemptions that reduce a qualifying homeowner's assessed value further. Eligibility, amounts, and which taxes each one applies against all vary, and none of them are automatic -- each requires its own application to your county tax assessor's or tax commissioner's office, generally by the same April 1 deadline as the standard homestead exemption:

• Age 65+, limited income: an additional $4,000 exemption from county and school taxes for homeowners 65 or older whose gross household income (excluding Social Security and a set amount of retirement income) does not exceed $10,000.
• Age 62+, school taxes: many school systems separately offer an exemption of up to $10,000 of assessed value against school taxes specifically, for homeowners 62 or older who meet an income test -- administered separately from the age-65 exemption above.
• Age 62+, local floating exemption: some counties additionally exempt further assessed-value growth above a set base year for qualifying homeowners 62+ whose household income is capped around $30,000 -- a distinct, often older, county-specific program in places that have one, functioning similarly in spirit to the statewide HB 581 exemption in Section 2.
• Disabled veterans: qualifying 100% disabled veterans (and, in some circumstances, an unremarried surviving spouse or minor children) receive an exemption of the greater of $32,500 or the maximum amount set annually by the U.S. Department of Veterans Affairs for specially adapted housing grants -- $121,812 for 2025 -- applied against all ad valorem taxes.
• Surviving spouses of fallen service members, peace officers & firefighters: unremarried surviving spouses of U.S. armed-forces members killed in the line of duty receive the same VA-linked exemption amount as disabled veterans; surviving spouses of Georgia peace officers or firefighters killed in the line of duty can receive a full exemption of the entire homestead value, if they remain unmarried and continue to occupy the home.

Confirm current income thresholds, exact dollar figures for the current tax year, and application requirements directly with your county before assuming you qualify for any of these.

Source: Georgia Department of Revenue, Property Tax Homestead Exemptions (dor.georgia.gov).

4. Representative figures by county

As with millage rates, a homestead exemption's actual local amount and a jurisdiction's HB 581/SB 33 participation status are set independently by dozens of overlapping county, city, and school-system governments. Rather than publish a single figure per county that would be stale within a budget cycle, this table summarizes what's confirmed about each county's HB 581 participation, and flags what isn't rather than guessing.

Sources: Georgia Department of Revenue; O.C.G.A. §§ 48-5-7, 48-5-44; Tax Foundation's analysis of Georgia Secretary of State HB 581 opt-out filings; Association County Commissioners of Georgia (ACCG) HB 581 guidance, as summarized above. Specific counties' current millage rates and exact local homestead-exemption dollar amounts aren't independently verified here, and this page should not be read as confirming one.

5. Appealing your assessment

Georgia gives a property owner 45 days from the date a county mails its annual Assessment Notice to file a written appeal with the county Board of Tax Assessors, on grounds of taxability, uniformity, value, or the denial of an exemption, using the state's uniform appeal form. Once filed, the owner chooses one of three paths to have the appeal heard: the county Board of Equalization (a panel of local citizens), a state-certified Hearing Officer (available only for certain nonhomestead property above a state-set value threshold), or binding arbitration. A decision from any of those three can generally be further appealed to Superior Court. Confirm the current-year notice date, exact appeal deadline, and any threshold amounts for your specific county directly with your county Board of Tax Assessors before relying on this summary for an actual appeal.

Source: Georgia Department of Revenue, Property Tax -- Real and Personal Property FAQ (dor.georgia.gov).

6. How we keep this page current

The structural mechanics here -- the 40% assessment ratio, the state homestead-exemption floor, and HB 581's basic mechanism -- are set in state law and don't shift quickly. What does shift, year to year and jurisdiction to jurisdiction, is exactly what we've tried to flag rather than guess: each county's and city's actual local homestead-exemption amount, each jurisdiction's HB 581 participation status through 2026 (Section 4), and any specific county's current millage rate. This page was researched with live web access in September 2026 against the Georgia Department of Revenue, Georgia General Assembly, and Tax Foundation sources named throughout -- but SB 33's mandatory statewide cap takes effect for the 2027 tax year, which will meaningfully simplify Sections 2 and 4 once it does, and is worth rechecking against this page after that transition. If you spot something here that's changed, or notice a broken link, we'd like to know -- see our contact information.