Cobb County, Georgia • Homestead exemption guide • 2026 update
Cobb County GA Homestead Exemption: Rules, Savings, Deadline, Filing Steps and Local Contacts
The Cobb County homestead exemption helps reduce property taxes on a home you own and use as your legal residence.
Cobb County has more than one benefit. The basic exemption, floating exemption, age-62 school-tax exemption, city taxes and state relief credit can all change the final bill.
For most years, Georgia’s regular homestead filing deadline is April 1. For 2026, Cobb’s assessment guidance listed a July 20 deadline tied to the Annual Notice of Assessment appeal window.
Fast answer
What Cobb County Homeowners Need to Know First
Use April 1 as the safest recurring Georgia deadline.
Cobb’s 2026 assessment guidance listed this deadline for homestead filing.
Removed from assessed value for major county-billed categories.
Georgia generally taxes real property from 40% of fair market value.
Protects the county general fund portion from reassessment increases.
Qualifying Cobb homeowners may receive county school-tax relief.
Homestead filing, tax bills and refunds usually start with the Cobb County Tax Commissioner. Value, appraisal record and appeal issues start with the Cobb County Board of Tax Assessors.
Local contacts
Cobb County Offices for Homestead, Values, Deeds and Policy
Cobb County Tax Commissioner
Use for: homestead filing, exemption status, tax bills, payments and refunds.
Address: 736 Whitlock Ave, Suite 100, Marietta, GA 30064
Phone: 770-528-8600
Email: tax@cobbtax.gov
Tax Commissioner: Carla Jackson
Open CobbTax.govCobb County Board of Tax Assessors
Use for: fair market value, assessment notice, appraisal record and appeals.
Address: 736 Whitlock Ave, Suite 200, Marietta, GA 30064
Phone: 770-528-3100
Email: cobbtaxassessor@cobbcounty.gov
Director / Chief Appraiser: Christine Stinchcomb
Open Tax AssessorSuperior Court Clerk — Real Estate Division
Use for: deeds, plats, liens and recorded real-estate documents.
Address: 10 E. Park Square, Building C, Marietta, GA 30090
Phone: 770-528-1360
This office does not decide homestead eligibility.
Open Real Estate DivisionCobb Board of Commissioners
Use for: county policy, budget, millage hearings and district representation.
Address: 100 Cherokee Street, Marietta, GA 30090
Main phone: 770-528-3300
Chairwoman: Lisa Cupid
Find Your CommissionerOpen district commissioner contact list
Chairwoman Lisa Cupid: lisa.cupid@cobbcounty.gov
District 1 Keli Gambrill: keli.gambrill@cobbcounty.gov
District 2 Erick Allen: erick.allen@cobbcounty.gov
District 3 JoAnn K. Birrell: joann.birrell@cobbcounty.gov
District 4 Monique Sheffield: monique.sheffield@cobbcounty.gov
Common content gaps
Details Many Cobb Homestead Guides Miss
2026 deadline changed in practice: many pages only say April 1, but Cobb’s 2026 assessment guidance listed July 20 for that year.
Notice Box 3 matters: if you are no longer eligible, Cobb says you must report ineligibility before the appeal deadline.
Notice Box 10 matters: it lists approved exemptions, credits and preferential assessments on the Annual Notice of Assessment.
Notice Box 11 matters: it shows estimated tax savings from exemptions, credits or preferential assessments.
The estimator is limited: Cobb’s estimator is for county taxes only and does not include city taxes.
Special classifications may be excluded: agricultural or other special-classification parcels may not work in the estimator.
City taxes are separate: homes inside Cobb cities can receive additional city bills and city-specific rules.
Floating exemption is narrow: it protects county M&O, not every tax line.
Filing workflow
How to Apply for Cobb County Homestead Exemption Online
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Confirm the property is your legal residence.
You should own and occupy the Cobb County home as your principal residence.
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Remove any prior homestead.
Do not keep another homestead exemption in another county or state.
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Find the parcel first.
Use house number and street name only if the search tool is sensitive.
Open Cobb Property Search -
Open the official SmartFile page.
Do not rely on a paid mailer when the official filing route is available.
Open Cobb SmartFile -
Select the correct exemption category.
Choose basic homestead first, then add senior, disability, veteran or survivor categories only if they apply.
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Upload proof and submit.
Save the confirmation email, screenshots and uploaded-document copies.
Cobb SmartFile says older draft filings may be removed. A draft does not protect your deadline unless it is actually submitted.
Deadline guide
Cobb County Homestead Deadline: April 1, July 20 and the Appeal Window
Use April 1 as the safest annual Georgia deadline.
Cobb’s 2026 guidance listed July 20 as the homestead deadline for that year.
SmartFile and estimator notes reference the appeal deadline shown on the Notice of Assessment.
For future years, file before April 1 unless Cobb publishes a later current-year deadline.
If April 1 has passed, check the current SmartFile notice and your Annual Notice of Assessment before assuming the year is lost.
Savings math
How Cobb County Homestead Savings Are Calculated
Georgia generally starts with fair market value, then uses 40% of that value as assessed value.
The basic Cobb homestead exemption removes $10,000 from assessed value for major county-billed categories.
Simple example
$500,000 fair market value × 40% = $200,000 assessed value.
$200,000 − $10,000 basic homestead = $190,000 before floating or special benefits.
$10,000 × 27.16 mills ÷ 1,000 = $271.60 in the official county-billed example.
Open simple educational calculator
Assessed value: $200,000.00
Basic exemption: $10,000.00
Estimated basic savings: $271.60
Exemption types
Basic, Floating, Senior, Disability and Veteran Benefits
Basic homestead exemption
Reduces assessed value by $10,000 for major county-billed categories.
This is usually the first exemption a qualifying homeowner should file.
Floating homestead exemption
Protects the county general fund portion from reassessment increases.
It does not freeze school, fire, city, CID, bond or every special-district tax.
Age 62 school-tax exemption
Qualifying age-62 homeowners may receive county school-tax relief.
This can be one of Cobb’s most valuable local homeowner benefits.
Age 65 income-limited exemption
Georgia’s age-65 $4,000 exemption has an income limit.
Use the current Cobb affidavit before filing this category.
Disabled veteran exemption
Georgia’s disabled veteran homestead benefit is indexed by year.
Use current official proof and verify the current-year maximum.
Surviving-spouse benefits
Georgia provides several survivor categories.
Different survivor benefits require different documents.
After filing
How to Check Homestead Status and Notice Boxes
First check SmartFile: confirm that the application was submitted and not left as a draft.
Then check the Tax Estimator: Cobb says exemption status is based on current records from the Tax Commissioner and Tax Assessor.
Check Notice Box 10: this area lists approved exemptions, credits and preferential assessments.
Check Notice Box 11: this area shows estimated tax savings from approved benefits.
If missing: contact the Tax Commissioner with your parcel ID and filing confirmation.
If no longer eligible: Cobb guidance says you must report ineligibility before the appeal deadline.
Appeal vs exemption
What If Your Cobb County Value Looks Too High?
A homestead application and a value appeal are separate actions.
Use the Tax Commissioner for homestead filing and exemption status. Use the Tax Assessor for fair market value, uniformity and appeal issues.
Homestead problem
Use this path if the exemption is missing, pending, denied or not shown in the estimator.
Have your parcel ID and SmartFile confirmation ready.
Value problem
Use this path if the fair market value or property characteristics look wrong.
Use the appeal deadline printed on the Annual Notice of Assessment.
City and district issue
Cobb City Taxes, Fire Districts, CID and Special Districts
Cobb’s county estimator is for county taxes only. It does not include city taxes.
If your home is inside a city, verify city property-tax exemptions and bills directly with that city.
Nearby homes can fall into different city, school, fire, CID or special-district combinations.
Documents
Documents to Prepare Before Filing
Georgia ID: driver’s license or government-issued ID showing Cobb County residency.
Vehicle registration: useful residency proof when requested.
Deed or closing documents: useful when ownership has not fully updated in records.
Trust papers: needed when the home is held in a trust.
Age proof: needed for age-62 or age-65 benefits.
Income affidavit: needed for income-limited age-65 exemption categories.
Disability or VA proof: needed for disability, disabled veteran and survivor categories.
Avoid delays
Common Cobb County Homestead Mistakes
Using the wrong office: exemption filing and value appeals do not use the same process.
Ignoring the assessment notice: the notice can affect appeal timing and current-year filing review.
Leaving a draft unfinished: a SmartFile draft is not a submitted application.
Forgetting senior benefits: basic homestead does not automatically mean every senior exemption is active.
Assuming all taxes freeze: floating homestead does not freeze the full bill.
Missing city taxes: city bills and city exemptions can be separate from county estimates.
Important notice
Independent Information, Tax Caution and Property-Records Notice
This page is independent informational content for homeowners.
It is not the official website of Cobb County, CobbTax, the Board of Tax Assessors, the Georgia Department of Revenue or any government agency.
It is not legal advice, tax advice, an official bill, an assessment notice or an exemption decision.
Verify deadlines, forms, exemption amounts, millage rates and office details directly with official sources before acting.
Do not use property-record information for employment, tenant screening, credit, insurance or any FCRA-regulated purpose.
FAQs
Cobb County Homestead Exemption FAQs
What is the Cobb County homestead exemption deadline?
The regular Georgia deadline is April 1. For 2026, Cobb’s assessment guidance listed July 20 as the homestead filing deadline.
Where do I apply for Cobb County homestead exemption?
Use the Cobb SmartFile homestead application. Start by confirming your parcel through Cobb Property Search.
How much is the basic Cobb homestead exemption?
The basic Cobb homestead exemption removes $10,000 from assessed value for major county-billed categories.
What is Cobb’s floating homestead exemption?
It protects the county general fund portion from reassessment increases. It does not freeze the full tax bill.
Does the age-62 exemption remove school taxes?
Qualifying Cobb homeowners age 62 or older may receive county school-tax relief. Apply or update your exemption when first eligible.
What documents do I need?
Most applicants need Georgia ID showing Cobb County residency. Special categories may need deed, trust, age, income, disability, veteran or survivor proof.
Can I appeal my value if I already have homestead?
Yes. Homestead exemption and a value appeal are separate. Use the appeal deadline on the Annual Notice of Assessment.
Does Cobb’s tax estimator include city taxes?
No. Cobb’s estimator is for county taxes only. Contact the municipal tax office for city tax information.
What happens if I am no longer eligible?
Cobb guidance says homeowners must report homestead ineligibility before the appeal deadline. Failure to report can create taxes, interest and penalties.
Official links