///GEORGIA · COUNTY GUIDE
The 2026 deadline to appeal a Cobb County property tax assessment is July 20, 2026. The filing window runs from June 5, 2026 to July 20, 2026.
Cobb County mailed 2026 Notices of Assessment on Friday, June 5, 2026, and property owners have 45 days from the date shown on the notice to appeal, which makes the deadline July 20, 2026.
| 2026 appeal deadline | July 20, 2026 |
|---|---|
| Filing window opens | June 5, 2026 |
| File with | Cobb County Board of Tax Assessors, online at assessor.cobbcounty.gov/appeals or by Form PT-311A |
| Governing jurisdiction | Cobb County, Georgia |
| After a successful appeal | The reduced value is frozen for the two following tax years (O.C.G.A. §48-5-299(c)). |
| Can a board raise the value? | Yes — see below (O.C.G.A. §48-5-311) |
| Deadline source | Tax Assessor's Office, Cobb County Georgia |
| Last verified | August 16, 2026 |
The 2026 deadline is July 20, 2026. The window opens June 5, 2026. Cobb County mailed 2026 Notices of Assessment on Friday, June 5, 2026, and property owners have 45 days from the date shown on the notice to appeal, which makes the deadline July 20, 2026.
Appeals are filed with the Cobb County Board of Tax Assessors, online at assessor.cobbcounty.gov/appeals or by Form PT-311A. The governing jurisdiction is the Cobb County, Georgia.
Georgia counties mail an Annual Notice of Assessment, and an appeal must be filed within 45 days of the notice date (O.C.G.A. §48-5-311). Appeals go to the county Board of Assessors and, if not resolved there, to the Board of Equalization — most settle on the evidence, and Georgia allows remote hearings. A successful appeal freezes the reduced value for the two following tax years (O.C.G.A. §48-5-299(c)), so one appeal can lower the bill for three.
Yes, it's possible — a Georgia Board of Equalization may increase, decrease, or sustain an assessed value on appeal (O.C.G.A. §48-5-311). That's why we check for that exposure before filing: we don't file when we see it, and if it surfaces after filing we withdraw. We'd rather lose the case than leave you worse off than when you started.
Enter your address and we'll check Cobb County's own records at no cost. If there's no case, we'll tell you that too.
Serving California, Georgia, and Florida.
Georgia property tax appeals. Any estimate is based on county assessment data and public records and is not a guarantee of any outcome. Representation and fee terms are provided in writing before any filing. Deadline information reflects published county materials as of the date shown above — verify with the Cobb County Board of Tax Assessors, online at assessor.cobbcounty.gov/appeals or by Form PT-311A before relying on it.