Cobb County, Georgia
Do I file homestead exemption with Cobb County or the state?
For a home in Cobb County, you usually start with the Cobb County Tax Commissioner’s homestead exemption page. Georgia has statewide homestead rules, but the application is handled locally.
Cobb County says the exemption applies only to property you own and occupy as your legal residence. For the current tax year, the basic rule is that you must own and occupy the home as your primary residence on January 1.
The county’s online homestead system is the normal place to apply. You can go directly to the Cobb County online homestead application.
Start with official offices: Cobb County Tax Commissioner for homestead filing, Cobb County Board of Tax Assessors for value and assessment issues, and your city tax office if your home is inside a city that has separate city exemptions.
Important: HomesteadExemption.org is not Cobb County, the State of Georgia, a law firm, a tax-prep company, or a filing service. This guide explains the official homestead process so you know where to start and what to ask.
What Cobb County homestead exemption does
A homestead exemption reduces the taxable value used to calculate part of your property tax bill. Cobb County explains that property is generally assessed at 40% of fair market value, and the homestead exemption reduces that assessed value in the tax categories where the exemption applies.
That does not mean every homeowner gets the same dollar result. The effect depends on the exemption type, the tax categories involved, the property value, city status, school tax status, and the tax rates for that year.
The main question is not “How much will I save?” The first question is: “Do I have the right homestead exemption on my Cobb County home?”
Who may qualify for Cobb County homestead exemption
For the basic Cobb County homestead exemption, the homeowner must generally meet all of these conditions:
- You own the property.
- You occupy the property as your primary residence and legal residence.
- You owned and occupied the property on January 1 of the tax year.
- All applicants’ names are on the deed.
- You are not claiming a homestead exemption on another home in Georgia or another state.
- The property is not a rental property.
If your facts are not simple, do not guess. A name change, divorce, death, inherited home, trust, missing deed update, or prior exemption in another county can change what the office needs from you.
Where to apply in Cobb County
Cobb County Tax Commissioner
The Cobb County Tax Commissioner’s Office processes homestead exemptions for county property tax purposes. The official county property tax division is listed at 736 Whitlock Avenue, Marietta, GA 30064, and the county lists the main phone number as 770-528-8600 on its Tax Commissioner’s Office page.
The county’s property tax forms page also links to the online homestead application, trust affidavit, age 65 income affidavit, and homestead removal or address change form.
Basic filing steps
- Check that the home was your legal residence on January 1.
- Find your parcel information if you have it. Your tax bill or assessment notice may show the parcel ID.
- Gather proof of residency and any special exemption documents.
- Use the county’s online application or ask about in-person paper filing if you cannot file online.
- Save the confirmation email or receipt after you submit.
Cobb County’s online filing FAQ says a submitted online application should generate an email with a filing ID. Keep that email. It is your proof that the application was submitted.
Documents Cobb County commonly asks for
The exact documents depend on the exemption. For a basic application, Cobb County’s instructions point to proof of Georgia residency. The county lists examples such as a Georgia driver’s license with the property address and vehicle registration showing taxes paid in Cobb County.
Georgia’s statewide guidance also says counties may ask for items such as the homeowner’s name, property address, parcel ID, proof of residency, a recorded deed for new owners if records have not updated, and trust documents or a trust affidavit if the property is in a trust.
| Situation | What to check before filing |
|---|---|
| New owner | Make sure the deed has been recorded and that the owner names match the application. |
| Recently moved from another county or state | Make sure any old homestead exemption has been removed before claiming Cobb County homestead. |
| Home in a trust | Check the county’s trust affidavit requirements before filing. |
| Senior exemption | Check age on January 1 and whether income documents or an affidavit are required. |
| Disability or veteran exemption | Check the official proof required before assuming the exemption applies. |
| Death, divorce, or name change | Ask the county what deed, marriage, divorce, probate, or other record is needed. |
Cobb County deadline notes
Cobb County’s main deadline is April 1. The county’s homestead page says to submit by April 1 to qualify for the current tax year, and the online filing page says applications must be received or USPS postmarked by April 1 to be accepted for that year.
Georgia’s Department of Revenue now also says taxpayers may apply beyond the historic April 1 deadline up to the end of the 45-day window to appeal the notice of assessment. Cobb County’s own filing page still emphasizes April 1 and says late applications waive the exemption for that year.
Because those instructions can affect a real tax bill, use the safe rule: file by April 1 whenever possible. If April 1 has passed, contact the Cobb County Tax Commissioner right away and ask whether you still have any current-year filing option tied to your assessment notice or appeal period. Do not assume a late filing will be accepted unless the official office confirms it.
If you mail anything, Cobb County’s FAQ says it honors U.S. Government Post Office postmarks dated by midnight of the filing deadline. It also says metered or kiosk postage dates are not accepted as proof of timely filing. Keep copies of what you sent.
Common Cobb County homestead exemption types
Cobb County has several homestead-related exemptions. Apply only for the ones that match your facts. Do not select a senior, disability, veteran, or surviving spouse exemption unless you can document that you qualify.
| Exemption type | Basic official description |
|---|---|
| Cobb County Basic Homestead | Cobb describes this as a $10,000 exemption in the county general and county school general tax categories. Proof of Georgia residency is required. |
| Cobb County School Tax, Age 62 | Cobb describes this as an exemption from all taxes in the school general and school bond tax categories. You must be age 62 on or before January 1 of the current tax year and provide proof of age. |
| Cobb County $22,000 Disability | Cobb describes this as a $22,000 exemption in all tax categories except the state. The county lists disability by January 1, a net income limit, proof of income, and a doctor’s certificate requirements. |
| State Senior Age 65 $4,000 | Cobb lists an age 65 state senior exemption with an income limit and an income affidavit. Check the current county form before filing. |
| State Veteran’s Disability | Cobb points to Georgia law and requires a VA letter showing the effective date of the qualifying disability. The Georgia Department of Veterans Service explains the state disabled veteran homestead exemption separately. |
| Surviving spouse exemptions | Special state homestead exemptions may apply to certain un-remarried surviving spouses or minor children, including service-related deaths and peace officer or firefighter line-of-duty deaths. Documentation is required. |
For disabled veterans, review the Georgia Department of Veterans Service page on the disabled veteran homestead tax exemption and then file through the county, not through this website.
If you live inside a Cobb County city
Cobb County says residents of a city must apply for city exemptions directly with the city tax office. That means your county homestead exemption and any city homestead exemption may not be handled in the same place.
For example, the City of Marietta has its own exemptions page. Marietta’s page describes city homestead, school tax, disability, and veteran-related exemptions for property inside Marietta city limits.
If your home is in Acworth, Austell, Kennesaw, Marietta, Powder Springs, Smyrna, Mableton, or another city area, check whether that city has a separate tax office or exemption process. Do not assume your county filing covers every city tax category.
If you already have homestead exemption
Cobb County’s online filing page says the homestead exemption is automatically renewed each year as long as you continue to occupy the home and the home remains under the same ownership.
You may need to reapply or update the office if ownership changes, your residence changes, or you now qualify for a higher exemption. Cobb County’s FAQ also says you must reapply for exemptions if a name changes or ownership changes because of marriage, death, or divorce, and that a recorded deed, marriage certificate, or divorce decree must be provided.
If you moved, sold the property, started renting it, or no longer qualify, use the county’s forms page to find the homestead removal or change of address form. Leaving an exemption on a home that is no longer your legal residence can cause problems.
If you were denied, missed the deadline, or are confused
First, read the notice or email carefully. Make sure the county has the correct parcel, owner name, address, and exemption type.
If the issue is missing proof, ask exactly what document is needed. If the issue is ownership, ask whether the deed has been recorded and whether the tax record has updated. If the home is in a trust, ask whether the trust affidavit is enough or whether more paperwork is needed.
Georgia’s Department of Revenue says assessment appeals may include taxability, value, uniformity, and denial of an exemption, and that the written appeal is filed first with the county board of tax assessors. The appeal deadline is generally tied to the date the assessment notice was mailed. If a denial or assessment notice is involved, act quickly and use the official appeal instructions for your notice.
For value or assessment questions, Cobb County lists the Cobb County Tax Assessor’s Office as the office responsible for placing fair and equalized values on taxable property. For homestead filing and tax bill questions, start with the Tax Commissioner.
Do not pay a random filing service without checking the official process first. Cobb County provides an official online homestead application. A private website may look helpful, but it is not the county office unless it is on the official Cobb County or CobbTax system.
Homestead exemption is not the same as bankruptcy homestead protection
This guide is about Cobb County property-tax homestead exemption. It is the county and state property tax process for a primary residence.
That is different from bankruptcy homestead protection, which is a legal exemption used in debt and court proceedings. If you are trying to protect home equity in bankruptcy, foreclosure, judgment collection, probate litigation, or divorce, this county tax guide is not enough. You may need legal advice.
Official links for Cobb County homeowners
- Cobb County homestead exemptions
- Cobb online homestead application
- Cobb property tax forms
- Cobb property tax FAQ
- Cobb Tax Commissioner’s Office
- Cobb Tax Assessor’s Office
- Georgia property tax homestead exemptions
- Georgia homestead exemption filing guide
- Georgia disabled veteran homestead exemption
- City of Marietta exemptions
Independent editorial note
This guide was written using official Cobb County, Georgia state, and other high-trust public sources available on May 18, 2026. Homestead exemption rules, forms, deadlines, assessment appeal windows, and local city procedures can change. Before you file, appeal, or rely on a deadline, confirm the current rule with the Cobb County Tax Commissioner, the Cobb County Board of Tax Assessors, or the appropriate city tax office.