Georgia Cobb County GA Homestead Exemption: Rules, Savings, Floating Freeze & 2026 Deadline
Cobb County homeowners in Marietta, Smyrna, Kennesaw, Acworth, Austell, Powder Springs and unincorporated Cobb County can use homestead exemptions to reduce taxable value, protect the county portion of their tax bill from market-value spikes, and in some cases remove large school-tax amounts.
This guide explains Cobb’s 2026 filing deadline, the April 1 rule plus the newer assessment-notice appeal-window filing option, the $10,000 basic homestead exemption, Cobb’s floating homestead freeze, the age 62 school tax exemption, age 65 and disability benefits, veteran and surviving-spouse benefits, office roles, map, appeal path, official forms and practical filing steps.
How Do You File for Cobb County GA Homestead Exemption?
Start with the official CobbTax homestead application system. Cobb’s public SmartFile page is titled Application for Cobb County Homestead Exemption and says applications should be submitted by April 1 for the current tax year, but under HB 92 applications may also be submitted after April 1 for the current tax year before the appeal deadline shown on the Notice of Assessment. Cobb County’s 2026 assessment page lists July 20, 2026 as the 2026 homestead deadline.
Correct Filing Path
Use CobbTax / SmartFile for the homestead application. If you already created a draft filing, Cobb’s SmartFile page says to use My Filings and complete the existing draft instead of starting a new one.
Office Role
Cobb County says the Board of Tax Assessors handles property valuation and property tax exemption matters. The Tax Commissioner collects and disburses ad valorem property taxes and is the key office for CobbTax filing, tax bills and exemption removal.
Main Property Tax Offices
Board of Tax Assessors:
736 Whitlock Avenue, Suite 200
Marietta, GA 30064
Tax Commissioner Property Tax Division:
736 Whitlock Avenue
Marietta, GA 30064
April 1 vs July 20: Which Cobb Homestead Deadline Matters?
Cobb has two deadline concepts that can confuse homeowners. The historic Georgia filing date is April 1, but Georgia and Cobb materials now also recognize filing during the assessment-notice appeal window. For 2026, Cobb’s assessment information page says the homestead deadline is July 20.
| Deadline / Date | What It Means | Cobb Homeowner Action | Mistake to Avoid |
|---|---|---|---|
| January 1 | Georgia assessment and homestead eligibility date. Ownership, occupancy and legal-residence facts are measured as of this date. | Make sure the Cobb home was your legal residence on January 1 for the tax year you want. | Buying or moving in after January 1 and expecting the exemption to apply to that same year without checking eligibility. |
| April 1 | Historic Georgia and Cobb filing date for current-year homestead applications. | File by April 1 whenever possible. It is the safest practical deadline. | Waiting for the assessment notice when you already know you qualify. |
| 45-day assessment appeal window | Georgia DOR says taxpayers can now apply beyond April 1 up to the end of their 45-day notice appeal window. | Use the appeal deadline printed on your Cobb Notice of Assessment if you missed April 1. | Assuming every property has the same deadline without reading the notice date. |
| July 20, 2026 | Cobb’s 2026 page lists this as the 2026 homestead exemption deadline. | If the date has passed, contact CobbTax before assuming a current-year application can still be accepted. | Filing after the appeal deadline and expecting 2026 tax relief automatically. |
How to Apply for Cobb County Homestead Exemption Online
Use this Cobb-specific workflow before opening SmartFile. It is designed to prevent wrong parcel filings, duplicate drafts, address mismatch issues and missed higher-exemption opportunities.
Find the Correct Cobb Parcel
Use the Cobb property record or tax estimator to search by parcel ID, property address or owner name. Save the parcel ID because county forms and tax-bill tools use it as the property account identifier.
Confirm You Owned and Occupied the Home on January 1
Georgia homestead rules require the home to be owned and actually occupied as the owner’s legal residence as of January 1. Do not file for a rental, second home or future residence that was not your legal residence on the required date.
Update Address Records Before Filing
Cobb’s new-resident guidance recommends updating your USPS address, Georgia driver’s license and vehicle registration. If you had a homestead exemption in another county or state, be ready to provide proof that the other exemption was removed.
Choose the Right Exemption Category
Do not stop at the basic exemption if you may qualify for more. Review age 62 school tax, age 65 benefits, disability, disabled veteran, surviving spouse and trust-owned-property requirements before submitting.
Use the Official SmartFile Application
Open Cobb’s SmartFile homestead page. If you previously started a draft, use My Filings and finish the draft. SmartFile warns that older draft filings may be removed after 30 days.
Attach Trust or Special-Status Documents if Needed
If the property is in a trust, use Cobb’s trust affidavit guidance and provide the trust information requested. If applying for senior, disability, veteran or surviving-spouse relief, provide the proof required for that specific benefit.
Keep Your Receipt and Check the Notice
After submitting, keep the confirmation. When your Notice of Assessment and tax bill are available, check the exemption codes, estimated tax savings, taxable value and whether the homestead removal/reporting box applies to you.
Report Ineligibility Before the Appeal Deadline
Cobb’s 2026 notice explanation says owners who are no longer eligible for homestead must report ineligibility before the appeal deadline, and failure can trigger unpaid taxes, interest and a 50 percent penalty on the amount improperly reduced.
Who Qualifies for Cobb County GA Homestead Exemption?
Cobb and Georgia rules focus on ownership, occupancy, legal residence, filing timing and whether the owner is already receiving a homestead benefit somewhere else.
Home and Residence
- The property is in Cobb County, Georgia.
- You owned the home on January 1.
- You actually occupied the home as your legal residence.
- You are not treating the property as a rental, second home or future residence only.
Documents and Identity
- Parcel ID or property address.
- Georgia driver’s license or residency documentation where requested.
- Vehicle registration or address evidence where relevant.
- Trust affidavit or ownership documents if property is held in trust.
Problems That Can Block or Remove Benefits
- Receiving homestead on another property in Georgia or another state.
- Not removing a prior homestead after moving to Cobb.
- Missing April 1 and the assessment-notice appeal deadline.
- Failing to report that you moved, sold, rented or no longer qualify.
Cobb County Homestead Exemption Types and Savings
Cobb’s exemption structure is more valuable than a simple one-line state exemption. The basic homestead, floating homestead, age 62 school tax exemption and special exemptions affect different parts of the bill.
| Benefit | Who It Helps | Value / Effect | Cobb Filing Note |
|---|---|---|---|
| Basic Cobb Homestead Exemption | Homeowners who own and occupy the Cobb property as legal residence on January 1. | Cobb materials commonly list a $10,000 basic homestead exemption, including the $2,000 state-tax-category amount. | Apply through CobbTax / SmartFile. File by April 1 whenever possible, or by the assessment-notice appeal deadline if current-year late filing applies. |
| Cobb Floating Homestead / Taxpayer Reassessment Relief Act | Qualified homestead properties where market-driven value increases would otherwise raise the county general taxable value. | Offsets value changes for the County General authority and can increase or decrease as reassessed value changes. It does not necessarily protect school, city, bond, fire or special-district taxes. | Check the tax bill legend or estimator for the floating exemption / Taxpayer Reassessment Relief Act line. |
| Age 62 School Tax Exemption | Cobb homeowners age 62 or older as of January 1 who meet the county’s requirements. | Cobb materials describe this as exempt from all county school taxes, making it one of the most important Cobb senior benefits. | Do not assume it appears automatically. Apply when you become eligible and verify the school-tax lines on the bill. |
| Age 65 $4,000 Exemption | Homeowners age 65 or older who meet the state income limitation rules. | Georgia DOR lists a $4,000 exemption from all county ad valorem taxes for qualifying age 65+ owners with income limits. | Income rules are technical. Ask CobbTax which income documents or affidavit are required for the year. |
| Age 65 Senior Citizens Exemption | Qualifying senior homeowners age 65+. | Cobb new-resident materials describe this benefit as exempt from state property taxes on the residence and up to 10 acres around the residence. | Because Georgia’s state millage may be zero in some years, verify actual bill impact with CobbTax. |
| $22,000 Disability Exemption | Qualified homeowners who are disabled as of January 1 and meet income requirements. | Cobb-related materials list a $22,000 disability exemption in tax categories, subject to program rules. | Medical/disability proof and income documentation may be required. Confirm the current affidavit and documentation with CobbTax. |
| Disabled Veteran / Surviving Spouse | Qualifying disabled veterans, unremarried surviving spouses and minor children under Georgia law. | Georgia provides an indexed exemption based on state law and the maximum amount allowed under the federal VA-related formula. Verify the current indexed amount for the tax year. | Use VA or Georgia Department of Veterans Service documentation. File with county tax officials and keep copies. |
| Surviving Spouse of Service Member, Firefighter or Peace Officer | Qualifying unremarried surviving spouses under Georgia law. | May provide major or full homestead relief depending on the statutory category. | Do not use a generic widow/widower form only; ask CobbTax which service-member, firefighter or peace-officer documentation is required. |
Cobb Floating Homestead Exemption: The Benefit Many Homeowners Miss
Cobb’s local floating homestead benefit is a major reason Cobb County opted out of the newer HB 581 statewide adjusted base-year homestead exemption. Cobb County stated in 2025 that its existing floating homestead provides greater tax relief by protecting homeowners against rising home values.
What It Does
The floating exemption is designed to offset reassessment increases for the County General portion of the bill. On Cobb tax-bill materials, it may appear as the Taxpayer Reassessment Relief Act or as a floating exemption amount that increases or decreases as values change.
What It Does Not Do
It does not mean your entire tax bill is frozen. School taxes, city taxes, bond taxes, fire district taxes, CID taxes, special district taxes, millage changes, new improvements and non-county charges can still affect the final amount due.
Cobb County Age 62 School Tax Exemption
Cobb’s age 62 school-tax exemption is one of the most valuable local homeowner benefits because the school portion can be a large part of the county tax bill. Cobb materials describe the age 62 school tax exemption as exempt from all county school taxes.
Age Test
The homeowner generally must be age 62 or older as of January 1 of the year for which the exemption is sought.
Homestead Test
The property must be the qualifying Cobb homestead. If you recently moved, changed ownership, placed the home in a trust or removed a prior owner, confirm whether a new application is required.
Proof to Prepare
Prepare proof of age, property identity, residence and any documents CobbTax requests. If you already have basic homestead, ask whether the age 62 exemption can be added without changing other exemption status.
Cobb County Homestead Exemption Savings Estimator
This educational calculator estimates taxable-value savings only. Use the current millage rates from CobbTax or your tax bill for official calculations. It does not calculate the floating exemption, city taxes, CID taxes, HTRG credits, penalties, interest or special district differences.
Basic estimate applies $10,000 against county general and county school mills only. Age 62 estimate applies entered school mills to assessed value as a rough school-tax-removal estimate. Disability estimate applies $22,000 against county, school and other entered mills. Veteran estimate uses the custom exemption amount you enter. Official bills may differ.
Cobb Tax Commissioner, Tax Assessor and Appeals: Who Handles What?
Cobb County property-tax work is split between the Tax Commissioner, Board of Tax Assessors and appeal bodies. Use the right office for the task.
Tax Commissioner — CobbTax Filing, Bills & Payments
Property Tax Division:
736 Whitlock Avenue
Marietta, GA 30064
Phone: 770-528-8600
Email: tax@cobbcounty.gov
Use for: CobbTax homestead filing, exemption-removal notices, tax bills, payments, receipts, delinquencies and tax-estimator questions.
Board of Tax Assessors — Values, Exemptions & Appeals
Address:
736 Whitlock Avenue, Suite 200
Marietta, GA 30064
Phone: 770-528-3100
Email: cobbtaxassessor@cobbcounty.gov
Use for: fair market value, assessment notices, appeal questions, exemption review and property records.
Appeals / Board of Equalization
If you disagree with the value, uniformity, taxability or certain exemption decisions, Cobb assessment materials describe a 45-day appeal window from the notice date. Further appeal rights may involve the Board of Equalization or Superior Court under Georgia law.
Use for: value appeals, exemption denial disputes and further review after an assessor decision.
Visiting Whitlock Avenue
Both the Property Tax Division and Tax Assessor’s Office are listed at the Whitlock Avenue government complex in Marietta. Confirm whether you need the Property Tax Division or Suite 200 before arriving.
Open Cobb Office Map ↗Cobb County Assessment Notice, Homestead Status and Appeal Window
Cobb’s Notice of Assessment is not a tax bill. It shows the county’s fair market value as of January 1, the assessed value, exemption/credit information and appeal instructions. For 2026, Cobb said assessment notices were mailed on June 5 and property owners had 45 days from the notice date to appeal.
Read the Notice Before Paying Attention to Social Media Deadlines
The notice date controls the 45-day appeal period. Your neighbor’s deadline may be different if the notice date, property class or issue differs.
Check Box 10 and Box 11 Carefully
Cobb’s 2026 notice explanation says Box 10 lists approved exemptions, credits and preferential assessments, while Box 11 shows estimated tax savings tied to those benefits.
File the Homestead Application Before the Same Deadline if You Missed April 1
Cobb’s SmartFile page says current-year applications may be submitted after April 1 before the appeal deadline listed on the Notice of Assessment. Do not wait until the tax bill if the appeal deadline is still open.
Appeal Value Separately From Homestead Filing
Homestead can reduce taxable value, but it does not prove the fair market value is correct. If the market value is wrong, review sales, condition, size, classification and comparable properties and file a written appeal within 45 days.
Official Cobb County and Georgia Homestead Resources
These links are included with action steps so the page is not just a link directory. Use them to file, verify, appeal, estimate or pay through the correct office.
Cobb SmartFile — Homestead Application
Official Cobb online application page for Cobb County homestead exemption.
- Read the deadline language before beginning.
- If you already started a filing, use My Filings and finish the draft.
- Confirm the property, owner, residence and exemption type.
- Submit before April 1 or before the assessment-notice appeal deadline if the current-year late window applies.
Cobb County Tax Commissioner
Use this office for CobbTax property-tax division, payment, billing, tax estimator and homestead-removal matters.
- Use the Property Tax Division information for tax-bill and CobbTax questions.
- Call 770-528-8600 if your exemption is missing from the tax estimator or tax bill.
- Use CobbTax payment tools only after the bill is issued.
- Report homestead ineligibility or removal before the required deadline if your status changes.
Cobb County Board of Tax Assessors
Official county office for assessments, property value, exemption handling, assessment notices and appeals.
- Use this page to confirm assessment notice dates and appeal instructions.
- Use the contact information for value or exemption questions.
- Read the 2026 Notice of Assessment section before filing an appeal.
- Remember the notice is not the final tax bill.
Cobb 2026 Property Tax Estimator
County tool for estimating county-billed taxes by parcel ID, property address or owner name.
- Search by parcel ID, property address or owner name.
- Open the correct result and review fair market value, assessed value and exemption status.
- Remember the estimator is county-tax only and may not include city bills.
- If an exemption you applied for is missing, contact CobbTax at 770-528-8600.
Georgia DOR — Property Tax Homestead Exemptions
Statewide Georgia rules for homestead eligibility, April 1 historic deadline, appeal-window filing, state exemptions and local exemptions.
- Read the Jan. 1 ownership and legal-residence requirement.
- Review the state exemption categories, including 65+, 62+, disabled veteran and surviving spouse rules.
- Use the DOR page for statewide context, then follow Cobb’s local SmartFile/CobbTax process.
Georgia.gov — Apply for a Homestead Exemption
Plain-language statewide guide for eligibility, documents and county/city filing.
- Use the eligibility checklist to confirm Jan. 1 ownership and occupancy.
- Gather parcel ID, residency proof, deed information and trust documents if needed.
- File with Cobb county tax officials, not through a generic third-party website.
Cobb Board of Equalization
Use this when a value, uniformity, taxability or appeal issue proceeds beyond ordinary review.
- Start with the Board of Tax Assessors if you are filing an initial assessment appeal.
- Use the BOE page to understand appeal-body and further-appeal information.
- Track the 45-day notice appeal deadline and any later 30-day deadline after a BOE decision.
Common Cobb County Homestead Exemption Mistakes
Mistakes That Can Cost Time or Money
- Missing both April 1 and the appeal deadline printed on the Notice of Assessment.
- Starting a new SmartFile application when an unsubmitted draft already exists.
- Assuming the age 62 school-tax exemption appears automatically.
- Forgetting to request removal of a prior homestead exemption in another county or state.
- Using the seller’s tax bill as a buyer’s future estimate.
- Assuming the floating homestead freezes every tax line on the bill.
- Ignoring Box 3 on the 2026 Notice of Assessment if you are no longer eligible for homestead.
- Contacting only the Tax Collector when the actual issue is fair market value or an assessment appeal.
Better Cobb Workflow
- Search the parcel first and save the parcel ID.
- File by April 1 whenever possible.
- If you missed April 1, read your Notice of Assessment for the appeal deadline.
- Ask about age 62, age 65, disability, veteran and trust forms before submitting.
- Use the Cobb tax estimator to verify exemption status later.
- Appeal fair market value separately if the assessed value appears wrong.
- Keep copies of confirmations, affidavits and removal letters.
What Should Cobb County Homeowners Do Next?
| Your Situation | Best Next Step | Office / Portal |
|---|---|---|
| You owned and lived in the Cobb home on January 1. | File Cobb homestead through SmartFile as early as possible, ideally by April 1. | CobbTax / SmartFile |
| You missed April 1 but still have an assessment notice appeal window. | Use the appeal deadline printed on your Notice of Assessment and file before that date. | CobbTax SmartFile + Notice of Assessment |
| You are 62 or older by January 1. | Ask CobbTax about the age 62 school tax exemption and verify it on the tax bill. | Cobb Tax Commissioner |
| Your market value looks too high. | Prepare comparable sales, photos and condition evidence, then file a written appeal within 45 days of the notice date. | Cobb Board of Tax Assessors |
| Your exemption is missing from the tax estimator or bill. | Check SmartFile submission proof, then call CobbTax at 770-528-8600. | Cobb Tax Commissioner Property Tax Division |
| You moved, sold, rented the property or became ineligible. | Request homestead removal or report ineligibility before the required deadline to avoid penalties. | CobbTax / Homestead Removal |
Cobb County GA Homestead Exemption FAQs
What is the Cobb County homestead exemption deadline for 2026?
Cobb County’s 2026 assessment information lists July 20, 2026 as the 2026 homestead deadline. Cobb’s SmartFile page says applications should be filed by April 1, but pursuant to HB 92 may be submitted after April 1 for the current tax year before the appeal deadline listed on the Notice of Assessment.
Can I file Cobb County homestead exemption online?
Yes. Cobb provides an official SmartFile page titled Application for Cobb County Homestead Exemption. If you already started a draft filing, use My Filings and complete the draft instead of opening a duplicate filing.
How much is the basic homestead exemption in Cobb County?
Cobb materials commonly list the basic homestead exemption as $10,000, including the $2,000 state-tax-category exemption. The actual dollar savings depends on the tax categories, millage rates and whether additional exemptions apply.
What is Cobb County’s floating homestead exemption?
Cobb’s floating homestead exemption, also described on tax-bill materials as Taxpayer Reassessment Relief Act savings, offsets reassessment increases for the County General portion of the bill. It does not necessarily freeze school, city, fire, bond, CID or special district tax lines.
Does Cobb County have an age 62 school tax exemption?
Yes. Cobb materials list an Age 62 School Tax Exemption and describe it as exempt from all county school taxes for qualified homeowners. Homeowners should apply when eligible and verify the exemption on the tax bill.
Do I need to reapply every year?
Cobb’s SmartFile page says the homestead exemption automatically renews each year as long as you continue to occupy the home and the home remains under the same ownership. Reapply if ownership or residence changes, or if you want to qualify for a higher exemption.
Which Cobb office handles homestead exemption?
Use CobbTax / SmartFile for filing. Cobb County says the Board of Tax Assessors handles property tax exemption and valuation matters, while the Tax Commissioner handles billing, collection, tax payments and CobbTax property-tax services.
What if I am no longer eligible for Cobb homestead?
Cobb’s 2026 notice explanation says owners who are no longer eligible must report ineligibility before the appeal deadline. Failure can result in unpaid taxes, interest and a 50 percent penalty on the amount improperly reduced.
Can I appeal my Cobb property value and file homestead at the same time?
Homestead filing and value appeal are separate issues. If you missed April 1, the homestead late filing window may run to the assessment-notice appeal deadline. If the fair market value is also wrong, file a written appeal within 45 days of the notice date.
Is this website affiliated with Cobb County?
No. County-Appraisal-District.org is an independent educational resource and is not affiliated with Cobb County Government, the Cobb County Tax Commissioner, the Cobb County Board of Tax Assessors, Georgia.gov or the Georgia Department of Revenue.
Independent Educational Guide
County-Appraisal-District.org is an independent informational resource and is not affiliated with Cobb County Government, the Cobb County Tax Commissioner, the Cobb County Board of Tax Assessors, the Cobb County Board of Equalization, Georgia.gov or the Georgia Department of Revenue.
Homestead eligibility, exemption approval, appeal deadlines, assessed value, exemption codes, floating exemption calculations, school-tax relief, veteran benefits, penalties and final tax bills are determined by official agencies under Georgia law. This page is not legal, financial or tax advice.
Property-owner and tax records should not be used for employment screening, tenant screening, credit eligibility, insurance underwriting or other regulated consumer-reporting purposes. This website is not a Consumer Reporting Agency.