Cobb County, Georgia
Property Taxes
The average property tax rate in Cobb County, Georgia is 0.67%. On the county's median home value of $407,200, that works out to $2,720 per year in property taxes, the 570th highest bill of all 3,211 counties nationally. The next deadline to protest your Cobb County property tax assessment is 45 days after your Annual Notice of Assessment.
Cobb County, Georgia Property Tax Calculator
How the Calculator Works
This Cobb County, GA property tax calculator estimates your bill the same way the Cobb County Board of Tax Assessors does: your home's value multiplied by the local effective tax rate. The Cobb County effective property tax rate is 0.67%, compared with the Georgia average of 0.77% and the U.S. average of 0.94%. On the county's median home value of $407,200, that works out to roughly $2,720 a year in Cobb County property taxes. Use the estimate above as a starting point, then check the protest playbook below if your county's assessed value looks higher than your calculator estimate suggests it should.
Lower Your Cobb County, Georgia Property Taxes
Step 1: Check
Your TimelineIn Cobb County, your Annual Notice of Assessment arrives in the spring, and the deadline to appeal it is . It is free to file!
- Notice arrives
- the spring
- Appeal deadline
- Filing fee
- free
Step 2: Gather
Your EvidenceTo file a strong appeal in Cobb County, you need proof. Gather these four things before you begin to file.
- Look up your current assessed property value
- Research recent sales of similar properties in your area
- Download the required form:
Georgia DOR Form PT-311A (Appeal of Assessment) - Take photos of any property issues that affect value
Step 3: Submit
Your AppealAppeals in Cobb County are filed with the Cobb County Board of Equalization. View filing instructions
- File with
- Cobb County Board of Equalization (also arbitration or hearing officer options)
- Refund timeline
- While an appeal is pending you are billed on the lesser of last year's value or 85% of this year's, with the difference held in escrow; an approved refund is paid within 60 days (O.C.G.A. 48-5-380).
| Doing it yourself | With Abode | |
|---|---|---|
| Cost | Free | $99/yr flat |
| Time investment | 6-10 hrs (research + filing) | 3 min (enrollment only) |
| Comparable sales | You pull the sales yourself | Automated comp analysis included |
| Evidence formatting | You gather and format it | Professional evidence packet included |
| Filing process | You file the Georgia DOR Form PT-311A (Appeal of Assessment) yourself | We file it for you |
| Hearing preparation | You appear before the review board | Consultant appears on your behalf |
| Success rate | 40-60% | 88% |
Lower your property tax in minutes with Abode Money
Cobb County, Georgia Property Tax Rate
The typical Cobb County homeowner pays an effective rate of 0.67% of market value each year, below the Georgia median of 0.77% and well below the U.S. median of 0.94%. By city the median rate runs from 0.49% in Austell to 0.80% in Smyrna. The table lists the 25th, median, and 75th percentile effective rate for all 10 Cobb County cities.
| City | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Acworth | 0.70% | 0.76% | 0.80% |
| Austell | 0.44% | 0.49% | 0.53% |
| Fair Oaks | 0.48% | 0.52% | 0.63% |
| Kennesaw | 0.70% | 0.78% | 0.86% |
| Mableton | 0.57% | 0.64% | 0.70% |
| Marietta | 0.53% | 0.60% | 0.67% |
| Powder Springs | 0.67% | 0.74% | 0.81% |
| Roswell | 0.70% | 0.77% | 0.85% |
| Smyrna | 0.72% | 0.80% | 0.90% |
| Vinings | 0.56% | 0.63% | 0.77% |
The 25th and 75th percentile rates are an Abode Money estimate, modelled from each city’s own home-value quartiles. The median is the city’s published effective rate.
Cobb County, Georgia Property Tax Bill
On a median home value of $407,200, the typical Cobb County tax bill comes to $2,720 a year, above the Georgia median of $2,341 and below the U.S. median of $3,119. Bills scale with value, so they track the map of where the expensive homes are. By city the median bill runs from $1,038 in Fair Oaks to $4,383 in Roswell. Search all 10 Cobb County cities below to compare the 25th, median, and 75th percentile bill.
| City | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Acworth | $2,032 | $2,594 | $3,015 |
| Austell | $985 | $1,405 | $1,743 |
| Fair Oaks | $810 | $1,038 | $1,814 |
| Kennesaw | $1,865 | $2,630 | $3,413 |
| Mableton | $1,406 | $1,995 | $2,670 |
| Marietta | $1,880 | $2,697 | $3,788 |
| Powder Springs | $1,856 | $2,462 | $3,166 |
| Roswell | $3,239 | $4,383 | $5,719 |
| Smyrna | $2,630 | $3,600 | $5,062 |
| Vinings | $2,674 | $3,802 | $6,873 |
Cobb County, Georgia Home Values
The median Cobb County home is worth $407,200, the value your tax bill is calculated from, versus a Georgia median of $303,300 and a U.S. median of $332,700. Values range widely, with the middle half of Cobb County homes between $299,100 and $586,600. By city the median value runs from $199,600 in Fair Oaks to $604,600 in Vinings. The table lists the 25th, median, and 75th percentile value for all 10 cities.
| City | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Acworth | $266,200 | $339,900 | $395,100 |
| Austell | $199,700 | $284,900 | $353,400 |
| Fair Oaks | $155,700 | $199,600 | $348,800 |
| Kennesaw | $237,800 | $335,400 | $435,300 |
| Mableton | $220,600 | $313,100 | $419,100 |
| Marietta | $312,700 | $448,500 | $630,000 |
| Powder Springs | $251,000 | $332,900 | $428,100 |
| Roswell | $419,100 | $567,100 | $739,900 |
| Smyrna | $328,400 | $449,500 | $632,100 |
| Vinings | $425,200 | $604,600 | $1,093,000 |
Cobb County, Georgia Property Tax History
Effective tax rate, median annual bill, and median home value in Cobb County, tracked year by year. Across the published years the median annual bill rose 37.2%, the median home value rose 48.7%, and the effective tax rate fell 7.7%.
Solid years are published figures. Dashed years are Abode predictions, from each county's own past trend.
| Tax year | Effective rate | Rate change | Median bill | Bill change | Median home value | Value change |
|---|---|---|---|---|---|---|
| 2020 | 0.72% | - | $1,982 | - | $273,900 | - |
| 2021 | 0.73% | +1.37% | $2,155 | +8.73% | $293,800 | +7.27% |
| 2022 | 0.69% | -6.15% | $2,382 | +10.53% | $346,000 | +17.77% |
| 2023 | 0.69% | -0.49% | $2,560 | +7.47% | $373,700 | +8.01% |
| 2024 | 0.67% | -2.48% | $2,720 | +6.25% | $407,200 | +8.96% |
| 2025(predicted) | 0.65% | -1.98% | $2,944 | +8.24% | $449,637 | +10.42% |
| 2026(predicted) | 0.64% | -1.99% | $3,187 | +8.25% | $496,496 | +10.42% |
Cobb County, Georgia vs. Nearby Counties
Thinking of moving? Run the tax math first. Of the five counties bordering Cobb County, none taxes the same home for less. Move a $407,200 home into Cherokee County, the cheapest neighbor, and the bill still rises $74 a year, while Fulton County, the most expensive, costs $859 more. Bordering effective rates run from 0.69% to 0.88% against Cobb County’s 0.67%. None of the five largest Georgia metro counties taxes the same home for less: Cobb has the lowest effective rate of the group. The widest gap across the county line is $785 a year.
Cobb County vs. Its Neighboring Counties
Effective rate, median bill, and the tax on the same $407,200 home · Cobb County and its five bordering counties
| County | Effective rate | Their median bill | Same home here | vs. Cobb |
|---|---|---|---|---|
| Cobb CountyCobb | 0.67% | $2,720 | $2,720 | - |
| Bartow County | 0.70% | $2,024 | $2,852 | +$132/yr |
| Cherokee County | 0.69% | $2,985 | $2,794 | +$74/yr |
| Douglas County | 0.74% | $2,212 | $3,034 | +$314/yr |
| Fulton County | 0.88% | $4,033 | $3,579 | +$859/yr |
| Paulding County | 0.80% | $2,619 | $3,268 | +$548/yr |
Cobb County vs. the Big Georgia Metros
Effective rate, median bill, and the tax on the same $407,200 home · Georgia’s five largest metro counties
| County | Effective rate | Their median bill | Same home here | vs. Cobb |
|---|---|---|---|---|
| Cobb County | 0.67% | $2,720 | $2,720 | - |
| Clayton County | 0.87% | $1,933 | $3,541 | +$821/yr |
| DeKalb County | 0.93% | $3,310 | $3,767 | +$1,047/yr |
| Fulton County | 0.88% | $4,033 | $3,579 | +$859/yr |
| Gwinnett County | 0.95% | $3,617 | $3,867 | +$1,147/yr |
Cobb County, Georgia Property Tax Exemptions
There are 8 property tax exemptions available in Cobb County, Georgia. What each saves depends on your own assessed value and local rate, so no fixed yearly figure is shown.
| Exemption | What you get | Saves a year | When to file |
|---|---|---|---|
| Georgia Standard HomesteadAny owner-occupant of a GA primary residence on Jan 1 | $2,000 off the 40% assessed value (state and county) | Varies | By April 1 |
| Cobb County Basic HomesteadOwner-occupant, primary residence on Jan 1 | $10,000 in county general and county school general | Varies | By April 1 |
| Cobb School Tax Age 62Homeowner age 62+ on/before Jan 1 (no income limit) | Exemption from all Cobb County School District general and bond taxes | Varies | By April 1 |
| State Senior Age 65 ($4,000)Age 65+ with annual net income under $10,000 | $4,000 in state, county bond, and fire district categories | Varies | By April 1 |
| Cobb $22,000 DisabilityDisabled before Jan 1 with prior-year net income under $12,000 | $22,000 in all categories except state | Varies | By April 1 |
| Disabled Veteran Homestead ExemptionVeterans with a 100% service-connected disability (or rated unemployable), and qualifying surviving spouses or minor children. | Exempts a large fixed amount of assessed value from county, school and municipal taxes, set by the state and adjusted upward each year (for 2025 the exemption is $121,812). | Varies | With the county Tax Commissioner or Board of Assessors, with VA documentation. |
| Surviving Spouse of a Service Member Killed in ActionUnremarried surviving spouse of a member of the U.S. armed forces killed in a war or armed conflict. | Exempts homestead value up to the disabled-veteran amount. | Varies | With the county Tax Commissioner or Board of Assessors, with documentation. |
| Surviving Spouse of a Peace Officer or FirefighterUnremarried surviving spouse of a peace officer or firefighter killed in the line of duty. | Exempts the full value of the homestead, with no dollar cap. | Varies | With the county Tax Commissioner or Board of Assessors, with documentation. |
Cobb County, Georgia Cheat Sheet
Value, rate, bill, rank, and the protest and payment dates · every figure the sections above establish, restated as label and value · Cobb County, Georgia
| Median tax bill | $2,720 a year+6.3% year over year |
|---|---|
| Effective tax rate | 0.67%of market value · Georgia 0.77% · U.S. 0.94% |
| Median home value | $407,200the value your bill is calculated from |
| Middle half of homes | $299,100 – $586,60025th to 75th percentile home value |
| National rank | 570th highestmedian bill, of 3,211 U.S. counties |
| Change since 2020 | +37.2%median bill, $1,982 to $2,720 |
| Effective rate since 2020 | -7.7%percent change in the rate, not percentage points |
| Cheapest neighbor | Cherokee County$74 a year less on the same $407,200 home |
| Who values your home | Cobb County Board of Tax Assessorsmarket value as of the assessment date |
| Notice arrives | The springAnnual Notice of Assessment, mailed to every owner |
| Protest window | 45 days after your Annual Notice of AssessmentGeorgia DOR Form PT-311A (Appeal of Assessment) · free to file · Cobb County Board of Equalization (also arbitration or hearing officer options) |
| Protest odds | 88% win a reductionwith Abode Money · we build the evidence, file, and argue it for you |
| Payment due | Around October 15 (2025)monthly interest at the federal prime rate plus 3% from the due date; on non-homestead property a 5% penalty also applies once taxes are 120 days late and another 5% every 120 days after that, up to a 20% cap (owner-occupied homesteads are largely exempt from that penalty) |
Statistics here come from the U.S. Census Bureau’s American Community Survey: what owners report their home is worth and what they paid in tax. They are not assessment roll figures, so they will not match your notice. Nothing here is tax advice.
Cobb County, Georgia Property Tax FAQ
Straight answers about property taxes in Cobb County, Georgia: the effective rate and typical bill, when taxes are due, the protest deadline, whether an appeal is worth filing, what evidence wins a reduction, and how Abode lowers your bill every year.
The effective property tax rate in Cobb County is 0.67%. The typical homeowner pays $2,720 a year on a median home value of $407,200.
Cobb County property taxes are due around October 15. Bills are issued around Aug 15, and late payments are charged monthly interest at the federal prime rate plus 3% from the due date; on non-homestead property a 5% penalty also applies once taxes are 120 days late and another 5% every 120 days after that, up to a 20% cap (owner-occupied homesteads are largely exempt from that penalty). Due dates shift year to year, so confirm the current one with the tax office.
Usually yes. A protest backed by comparable sales or evidence of condition problems stands a real chance of a reduction, and most are settled at an informal review without a hearing. A lower value also becomes the starting point for the following year, so a single win keeps paying. Filing in Cobb County is free, and your value cannot be raised because you protested.
The strongest evidence is recent sales of comparable homes: three to five from the past year, nearby, and similar in size, age, and condition. Photos and repair estimates for condition problems help too, because the assessor values homes from the outside. Budget about 2-4 hrs to assemble it.
Abode protests your Cobb County assessment every year for $99/yr flat and wins a reduction 88% of the time. Doing it yourself is free but takes 6-10 hrs and wins 40-60% of the time.
Every house on this street pays a different bill.
Make sure yours is the right one. Abode checks your assessment, files your exemptions, and protests when the numbers are off.
