Georgia Homestead Exemption: Fulton, DeKalb, Cobb, and Gwinnett Guide

Missing the homestead exemption deadline in Georgia costs real money. Not a small administrative penalty — actual hundreds to thousands of dollars in property tax you pay unnecessarily for an entire year. And the state will not reimburse you retroactively. The April 1 deadline is absolute, and it falls on you, the homeowner, to apply.

This is one of the most common expensive mistakes first-time buyers make in Georgia. The exemption is not applied automatically. It is not triggered by your closing. Nobody at the title table will remind you. You must proactively file with your county, and if you close in, say, November, you need to make sure you file before April 1 of the following year.

Here is what the exemption is, how it works, and the specific mechanics in each major Atlanta-area county.

How Georgia Property Tax Works

Georgia assesses all real property at exactly 40% of its fair market value — this is called the assessed value. The homestead exemption reduces that assessed value, directly lowering your tax bill.

The statewide base exemption reduces your assessed value by $2,000 for state, county, and school taxes. That doesn't sound like much, but metro county exemptions are far larger than the state baseline, and the savings compound year after year.

The April 1 Deadline

To receive the homestead exemption for the current tax year, you must own and occupy the home as your primary residence as of January 1 of that tax year, and you must file the application with your county tax commissioner or assessor's office by April 1.

If you close on a home in January, February, or March, you can file immediately. If you close in the fall — which is common — mark April 1 on your calendar the moment you get your keys. The consequences of missing it are significant.

Fulton County Homestead Exemption

Fulton County offers one of the most valuable homestead structures in the state, and it works differently than most counties:

Basic County Exemption: $30,000 off your assessed value for county taxes.

Basic City of Atlanta Exemption: $15,000 off the assessed value for City of Atlanta taxes (if your property is within Atlanta city limits).

Atlanta Public Schools Exemption: A separate $50,000 exemption after the first $10,000 of assessed value — meaning the school portion of your property tax drops substantially.

Floating Homestead Exemption (CPI Cap): This is Fulton County's most valuable long-term protection. Once you receive the basic exemption, your assessed value is capped at its base-year level for future tax calculations, regardless of how much your property's market value rises. If Atlanta's market appreciates 15% next year, your tax bill doesn't increase accordingly. This cap has shielded long-term Fulton homeowners from the aggressive tax spikes that accompany rapidly appreciating neighborhoods like Old Fourth Ward, Grant Park, and Buckhead.

To file: visit the Fulton County Tax Assessor's website or in person at their Atlanta office. You'll need a copy of your deed and proof of primary residence (driver's license showing the property address).

DeKalb County Homestead Exemption

DeKalb operates a more complex tier system for exemptions, labeled H1 through H10:

Basic (H1) Exemption: $12,500 off assessed value for school taxes; $10,000 off for county levies.

Property Assessment Freeze: Similar to Fulton's CPI cap, DeKalb applies an assessment freeze to all properties granted the basic H1 exemption. The key difference is DeKalb's specific treatment of income — certain senior and disability exemption tiers use the $10,000 Georgia Net Income standard rather than gross income, creating confusion when buyers compare their situation against published eligibility tables.

Practical note: If you own a home in Decatur that falls within DeKalb County, check the Decatur city tax exemption separately — it operates on a different application process than the county exemption.

Filing deadline: April 1. You can apply online through the DeKalb County Tax Commissioner's portal or in person at their office on Memorial Drive.

Cobb County Homestead Exemption

Cobb County provides a $10,000 basic exemption for county levies and a $10,000 exemption for school taxes.

Cobb emphasizes specialized exemptions for older and disabled residents:

Age 62 School Tax Exemption: At age 62, residents receive a full exemption from Cobb County school taxes — a major savings given that school levies represent a large share of the total property tax bill.

Disability Exemption: $22,000 off assessed value, subject to a $12,000 net income limit. The income limit is strict and catches some buyers off guard.

State Senior (Age 65) Exemption: Removes all state property taxes on the primary residence and up to 10 surrounding acres.

For most first-time buyers under 62, the Cobb basic exemption saves several hundred dollars annually. File online at the Cobb County Tax Assessor's website. Applications must be received by April 1.

Gwinnett County Homestead Exemption

Gwinnett's Regular Homestead Exemption (S1R) provides:

• $10,000 off county assessment
• $8,000 off school assessment
• $7,000 off recreation tax assessment

However, Gwinnett made a consequential decision to opt out of the statewide floating homestead exemption. Instead, the county uses a Value Offset Exemption (VOE), which freezes assessed value for the county tax portion only. It explicitly does not apply to school or city taxes.

This matters because school taxes are typically the largest component of a Georgia property tax bill. Gwinnett homeowners see their county tax stay relatively stable, but their school tax can still increase significantly as market values rise. Long-term, this structure leaves Gwinnett owners more exposed to appreciation-driven tax increases than Fulton or DeKalb homeowners under their respective CPI and freeze provisions.

Senior Exemption (S3): Significantly increases exemption amounts but applies a very strict income cap of $10,000 after deductions — so strict that many retired homeowners don't qualify.

File with the Gwinnett County Tax Commissioner before April 1.

What Happens If You Miss the Deadline?

You lose the exemption for the entire tax year. No partial credit, no appeal process for simple deadline misses, no refund. Georgia property tax law is explicit: the April 1 deadline is a hard cutoff.

In Fulton County, where the combined county and school exemption can reduce an assessed value by tens of thousands of dollars, missing this deadline on a mid-priced home could cost $1,000 to $2,500 in unnecessary taxes for that year.

The exemption does carry forward once you've filed — you don't need to refile every year unless your ownership status changes. But that first filing is entirely your responsibility.

How to Apply

Each county handles applications through their own tax commissioner or tax assessor's office:

• Fulton County: fultoncountyga.gov (Tax Assessor)
• DeKalb County: dekalbcountyga.gov (Tax Commissioner)
• Cobb County: cobbtax.org (Tax Assessor)
• Gwinnett County: gwinnettcounty.gov (Tax Commissioner)

You'll typically need your warranty deed, a government-issued ID showing the property address, and in some cases, your most recent utility bill. Online filing is available in all four counties.

If you need help calculating your complete first-year property tax liability across Georgia's fractional assessment system — or understanding how the exemption interacts with your county's millage rate — the Georgia First-Time Home Buyer Guide includes step-by-step tax worksheets built specifically for metro Atlanta buyers.

See more Georgia guides →