How Do I Apply for Homestead Exemption in Cobb County?

How do you apply for a homestead exemption in Cobb County, Georgia? You file with the Cobb County Tax Commissioner's office, online through the county's homestead portal or on a paper application in person, once you own the home and live in it as your primary residence on January 1. You upload a Georgia driver's license showing the property address and a vehicle registration showing taxes paid in Cobb, and you file before the appeal deadline on your Notice of Assessment for that year. Our team walks buyers through these steps at closing, because the exemption begins with a form the owner sends.

A deed tells the county who owns a home. The homestead application tells the county who lives there. The two records travel separately, and the second one waits for you to write it.

This guide is from Andrew and Jassey Nguyen. NRG Nguyen Realty Group is a real estate team with Keller Williams Realty Peachtree Road helping buyers in Cobb County, Georgia file for the homestead exemption on the home they bought.

What does a homestead exemption do in Cobb County?

Cobb's Tax Commissioner describes the homestead exemption as a reduction in the assessed value of your home, which Georgia sets at 40% of fair market value, and that reduction lowers your property taxes. It applies only to property you own and occupy as your legal residence, and you can claim only one exemption per household.

The basic Cobb County homestead exemption is $10,000 off the assessed value in the county general and county school general tax categories, according to the Tax Commissioner's exemptions page. Other exemptions sit beside it for owners who meet their terms, and each one has its own proof.

How the exemption fits a full tax bill is the subject of our article on how property taxes work in Cobb County. This guide stays with the application itself.

Who qualifies to file in Cobb County?

The Tax Commissioner lists the eligibility test in two lines. You own and occupy the property as your primary residence on January 1, and all applicants' names appear on the deed.

The Georgia Department of Revenue states the same January 1 rule for the whole state, and adds that a person must actually occupy the home, which is considered their legal residence for all purposes.

Cobb's page then sets out a few limits:

• You cannot claim a homestead exemption in Cobb if you or your spouse already claim one in another county or state. You must remove that exemption first and provide written confirmation.
• Claiming homestead on more than one property may result in penalties and interest.
• You cannot apply for homestead exemption on rental property.

Which exemptions can I apply for at the same time?

The Cobb application covers several exemptions, and the county asks you to apply only for the ones you qualify for. The exemptions page lists these:

• Basic homestead. The $10,000 exemption above, with proof of Georgia residency.
• School tax exemption at age 62. An exemption from all taxes in the school general and school bond categories. You must be 62 on or before January 1 of the current tax year, and you provide proof of age.
• Disability. An exemption for owners who are disabled on or before January 1 and fall within an income limit, with proof of income and a doctor's certificate.
• State senior exemption at age 65. An exemption for owners 65 or older on January 1 within an income limit, with an income affidavit.
• Disabled veterans and surviving spouses. Exemptions for qualifying disabled veterans, for qualifying surviving spouses of members of the armed forces, and for surviving spouses of peace officers or firefighters killed in the line of duty, each with its own letter or documentation.

If your home sits inside one of Cobb's cities, the county says city exemptions are filed directly with the city tax office, so plan on a second application there.

How do I apply online, step by step?

Cobb links its online filing system from the exemptions page. Here is the order, built from the county's own instructions and answers.

1. Wait until the deed is recorded and you have moved in. Every applicant must appear on the deed, and the home must be your residence. Your closing attorney's office can tell you when the deed has been recorded. Our article on whether you need an attorney to close on a house in Georgia explains that role.
2. Update your license and vehicle registration to the new address. The proof Cobb asks you to upload is a Georgia driver's license with the property address and a vehicle registration showing taxes paid in Cobb County.
3. Remove any exemption you hold elsewhere. If you or your spouse claim a homestead in another county or state, remove it first and keep the written confirmation, since Cobb asks for it.
4. Find your parcel ID. Cobb's answers say searching by parcel ID works best on the "Search for Homestead" step. You will find it on a tax bill, an assessment notice, or by searching the property address under Search/Pay Property Taxes on cobbtax.gov. Search by one option only: owner name, address or parcel ID.
5. Create your account and activate it. The system sends an activation email. If it does not reach your inbox, Cobb suggests checking your spam, junk and trash folders.
6. Complete the application. Enter phone numbers with dashes, in the format the system expects. Choose only the exemptions you qualify for.
7. Sign the declaration. Type each applicant's name the same way on the questions tab and the declaration tab. Cobb's answers say the system rejects a signature that does not match the applicant name.
8. Upload your proof and submit. Attach the license and registration, plus any proof a second exemption calls for, such as proof of age.
9. Save the confirmation. When you submit, the system immediately emails a filing ID. Cobb calls that email your confirmation that the application was received.

The portal removes a started draft left unchanged for more than 30 days, so finish it through "My Filings" once your paperwork is ready.

Can I apply in person or by mail?

Yes. Cobb's answers say that if you are unable to apply online, you can complete a paper application in person at a Cobb County Tax Commissioner's office. On the county's locations page, the Main Property Tax Office on Whitlock Avenue in Marietta lists homestead exemptions among its services, open Monday to Friday, 8:00 AM to 5:00 PM. Check the locations page before you go, since hours and holidays are posted there.

For anything mailed, the filing portal says applications must be received or USPS postmarked by the deadline for that year. The Tax Commissioner's answers add that the office honors a U.S. Post Office postmark dated by midnight of the filing deadline, and that metered or kiosk postage dates are not accepted as proof of timely filing.

When is the deadline in Cobb County?

The long-standing date in Georgia was April 1, the deadline our older article on Georgia's homestead exemption is built around. That date still matters, and there is now a later outer edge.

Cobb's filing portal says to submit by April 1 to qualify for the current tax year, and that under HB 92 (2025), applications may be submitted after April 1 for the current tax year, up to the appeal deadline listed on your Notice of Assessment. Missing both, it says, waives the exemption for that tax year. The Department of Revenue describes the same change: taxpayers may now apply past the historic April 1 deadline, up to the end of their 45-day window to appeal the notice of assessment.

Cobb's Tax Assessor's Office mailed its 2026 notices on June 5, so the outer deadline falls months after April. It is printed on your own notice.

Filing early also works in your favor. The Department of Revenue says a homeowner can file for the exemption any time during the prior year, and Cobb's portal says newly submitted applications apply to the tax year in which you qualify. A buyer who closes in the fall can file soon after moving in, and the exemption is applied to the first year they own and live in the home on January 1. The April 1 date is the plain, safe target. The appeal deadline is the backstop.

What happens after I submit?

The first email, with your filing ID, confirms receipt. The second arrives later. Cobb's answers say that when your application is processed, the system emails you, and you receive a Homestead Receipt by email or by mail. Keep both with your closing papers.

The exemption then reaches your bill. Cobb mails property tax bills by August 15, and payment is due October 15, according to the Tax Commissioner. If your loan has an escrow account, the Consumer Financial Protection Bureau explains that your servicer pays property taxes from it, and that as your taxes change from year to year, your escrow payment and your total monthly payment change with them.

Because eligibility is set on January 1, any exemption on the bill for the year you close belongs to the seller, if they held one. Ask your lender to estimate your escrow with only the exemptions you will hold yourself. Our article on what closing costs a buyer pays in Georgia shows where the tax lines sit at closing.

Do I have to apply again every year?

No. Cobb's filing portal 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. It names three times you must reapply: a change in ownership, a change in residence, or a wish to qualify for a higher exemption.

The Tax Commissioner's answers add that a name change or change of ownership through marriage, death or divorce means reapplying for any exemptions, with a copy of a recorded deed, marriage certificate or divorce decree. Turning 62 is the higher-exemption case. The school tax exemption starts with an application of its own.

What do I do about the exemption on my old home?

Cobb's exemptions page says Georgia law requires you to notify the Tax Commissioner's office if you no longer qualify, and that failure to do so may result in penalties. You must notify the office if you moved or sold the property, began renting it, or your eligibility for any exemption changed. The county offers an online form to request the removal.

For a buyer leaving another Cobb home, that means two tasks in the same season: remove the exemption on the home you left, then file on the home you bought. If you are weighing a later move and wondering how your exemptions fit, our article on whether to stay in your home or move as you get older looks at the larger decision.

What mistakes hold up an application?

The first is assuming closing takes care of it. The county's application is completed by the owner, and Cobb's portal says a missed deadline waives the exemption for that year.

The second is filing with an old address. The proof Cobb asks for is a license with the property address and a registration showing taxes paid in Cobb, so update both first.

The third is leaving an owner off. Every applicant must appear on the deed, and the names you type must match the signatures on the declaration.

The fourth is overlooking an exemption held somewhere else, by you or a spouse, or forgetting that a home inside a city needs a separate city filing.

What could this look like in practice?

This is an example, not a real client.

Picture a couple who close on a home in unincorporated Cobb in early November. They move in the following week. At closing, our team hands them the filing steps and a short list: new licenses, new registrations, the parcel ID from the seller's tax bill, and the written confirmation that the homestead on their former home in another county has been removed.

By early December their licenses and registrations show the new address. They create an account on Cobb's portal, choose the basic homestead exemption, type their names the same way on both tabs, upload their proof and submit. The filing ID arrives by email within minutes, and they save it with their closing papers.

Because they own the home and live in it on January 1, their application applies to the new tax year. Weeks later the processing email and the Homestead Receipt arrive. Their lender, who estimated escrow without the seller's exemptions, already has the payment planned around the bill they will receive.

By the new year, the question was settled.

Frequently asked questions

Where do I file for homestead exemption in Cobb County? With the Cobb County Tax Commissioner's office, online through the homestead portal linked from cobbtax.gov, or on a paper application in person.

What documents does Cobb County ask for? A Georgia driver's license with the property address and a vehicle registration showing taxes paid in Cobb County, plus any proof a specific exemption requires, such as proof of age for the school tax exemption at 62.

What is the deadline? Cobb's portal says to submit by April 1 for the current tax year, and that applications may be submitted after April 1 up to the appeal deadline listed on your Notice of Assessment. Missing both waives the exemption for that year.

Can I apply before January 1 if I closed in the fall? The Department of Revenue says you can file any time during the prior year, and Cobb's portal says a new application applies to the tax year in which you qualify, which is the first year you own and live in the home on January 1.

Does the seller's exemption transfer to me? No. Each owner files their own, and every applicant must appear on the deed.

Your name, on the right record

The deed is filed for you at closing. The homestead application is the one record you write yourself, and it is short work once the license, the registration and the parcel ID are in hand. File it soon after you move in, and the rest of the year can be about the home.

NRG Nguyen Realty Group is a real estate team with Keller Williams Realty Peachtree Road helping buyers in Cobb County, Georgia file for the homestead exemption on the home they bought.

Send us a message: nrgmovesyou.com/contact

Or book a 15-minute discovery call with our team: schedule a call

Andrew and Jassey Nguyen

NRG Nguyen Realty Group

Real Estate Agents in Atlanta, GA

678-743-1586

nrgmovesyou.com

This article is general information, not tax or legal advice. Exemptions, proof requirements and deadlines can change, so confirm yours with the Cobb County Tax Commissioner's office and talk with a tax professional or attorney about your situation.