Cobb County tax records are public and free to search online through the Tax Commissioner’s qPublic portal. Each record shows a property’s fair market value, its assessed value, the millage rates applied by every taxing authority, any exemptions on the account, and whether the current bill is paid or past due. Bills go out by August 15 each year and are due October 15.
How to Search Cobb County Tax Records Online
The Tax Commissioner’s Office runs its property search on the qPublic platform. You can look up a record three ways: by owner name, by street address, or by parcel number. The parcel number is the most reliable of the three because the Board of Tax Assessors assigns a unique one to every tract of land in the county. You can find yours on last year’s tax bill or on your recorded deed.
Run the search, click the matching result, and the detail page opens with the current bill, prior payment history, and the assessment. You can download a PDF of the bill for your own records or to hand to a lender. Cobb County also runs a separate GIS-based property search on its main website that pairs tax information with map data, which is useful when you have an address but no parcel number.
What Your Tax Record Shows
Every record breaks into a few core pieces. The fair market value is what the Board of Tax Assessors estimates the property would sell for on the open market. Georgia law then sets your assessed value at exactly 40% of that fair market value, and the assessed value is what your bill is actually calculated from.1Department of Revenue. Property Tax Valuation
The record also lists the millage rates charged by each taxing authority that covers your parcel, and those rates depend on your tax district. In 2025, the combined county rate for unincorporated Cobb County (District 9) was 30.13 mills, properties inside the Cumberland Special Services District paid 32.58 mills, and parcels within a Community Improvement District could run above 35 mills.2Cobb County Tax Commissioner. 2025 Millage Rates School taxes are assessed separately and stack on top. Each authority appears on its own line, so you can trace exactly where the money goes.
Finally, the record reflects any exemptions applied to the account and the current payment status. If you carry a homestead exemption, the reduced taxable value shows on the bill. If there’s a balance owed, that appears as well, along with any penalties and interest that have accrued.
Getting a Printed Copy
If you need a physical copy rather than a PDF, the Property Tax Division at 736 Whitlock Ave. in Marietta handles those requests in person.3Cobb County Georgia. Tax Commissioners Office You can also mail a written request to P.O. Box 100127, Marietta, GA 30061. Expect nominal per-page fees.
How to Pay Your Property Tax Bill
Cobb County accepts property tax payments through four channels:4Cobb County Tax Commissioner. Property Overview
- Online, through the county’s payment portal. E-check payments carry no convenience fee. Visa, Mastercard, Discover, American Express, and PayPal all work but add a convenience fee.
- By mail, with a check or money order payable to the Cobb County Tax Commissioner at P.O. Box 100127, Marietta, GA 30061. Payments must be postmarked by October 15. Metered and kiosk postmarks are not accepted as proof of timely mailing.
- In person, at the Property Tax Division at 736 Whitlock Ave. in Marietta, the East Cobb Office at 4400 Lower Roswell Rd. in Marietta, or the South Cobb Government Service Center at 4700 Austell Rd. in Austell.
- By phone, through the automated system at 1-866-PAY-COBB (1-866-729-2622). Processing fees depend on your payment method.
Deadlines and Late Penalties
Bills go out by August 15 and are due October 15. There is no grace period. A payment made on October 16 is late and triggers an immediate 5% penalty on the unpaid amount, plus interest that accrues every month the balance remains.4Cobb County Tax Commissioner. Property Overview
Georgia law escalates the penalty the longer you wait. After the initial 5%, another 5% is added every 120 days on any remaining balance, capped at 20% of the original tax. Interest keeps running on top of the penalties.5FindLaw. Georgia Code Title 48 Revenue and Taxation 48-2-44
Exemptions That Change What Your Record Shows
A homestead exemption reduces the taxable value of your primary residence, which lowers the bill. You have to apply by April 1 to receive the exemption for that tax year. Missing the deadline waives the exemption for the entire year, no exceptions.6Cobb County, GA. Application for Cobb County Homestead Exemption Once approved, the exemption renews automatically each year for as long as you own and live in the home.
The county offers additional exemptions beyond the standard homestead, including a school tax exemption at age 62, a $4,000 state senior exemption at age 65 (with an income cap of $10,000, excluding Social Security and retirement income), and a $22,000 disability exemption for permanently disabled owners who cannot work (with an income cap of $12,000, excluding disability benefits).7Cobb County Tax Commissioner. Exemptions – Property Taxes Every exemption requires that you own the home and use it as your primary residence on January 1 of the tax year. If you move or start renting the property out, you are expected to notify the Tax Commissioner’s Office.
How to Appeal an Assessment
If the record shows a value you believe is too high, you have 45 days from the date the assessment notice was mailed to appeal.8FindLaw. Georgia Code Title 48 Revenue and Taxation 48-5-311 The window is firm. An appeal filed on day 46 is rejected no matter how strong the case.
The form is the PT-311A, and it goes to the Cobb County Board of Tax Assessors, not the Georgia Department of Revenue.9Georgia Department of Revenue. PT-311A Appeal of Assessment Form You indicate your preferred method of appeal on the form. If the local board has a policy for electronic submissions, you may be able to file by email; otherwise, mail or hand-deliver it.
Bring evidence. Recent comparable sales in your neighborhood, a private appraisal, or documentation of damage that affects value all give the appeal something to stand on. Disagreement without data rarely moves the number. While the appeal is pending, you still have to pay the October 15 bill. If the appeal succeeds, the county issues a refund on the overpayment.
What Happens If Taxes Go Unpaid
Balances left after October 15 are subject to levy and eventual tax sale. Cobb County does not sell tax liens; it sells the property itself at public auction.10Cobb County Tax Commissioner. Tax Sales
If your property is sold, you retain a right of redemption. Georgia law gives you 12 months from the sale date to buy it back, or any time after the sale until the purchaser formally forecloses that right.11Justia Law. Georgia Code 48-4-40 – Persons Entitled to Redeem Land Redemption costs the full amount the buyer paid at the sale, plus any taxes the buyer paid afterward, plus a 20% premium if you redeem within the first year. After the first year, another 10% premium is added for each year or partial year that passes.12Justia Law. Georgia Code 48-4-42 – Amount Payable for Redemption
Once 12 months pass, the purchaser can serve notice by certified mail to cut off your redemption rights permanently. After that, only a short window remains. If you fall behind, act well before a sale is scheduled. The statutory penalties multiply quickly and dwarf the original tax.