Stone Mountain, GA Property Tax: Rates & How to Save (2026)
Stone Mountain, GA property taxes: $2,352/year median. See rates, how to appeal in DeKalb County, and check your savings.
Key Takeaways
Median home value: $206,400 in Stone Mountain.Median annual tax bill: $2,352.Tax rate: DeKalb County's combined rate is 4.379%.Appeals filed with: DeKalb County Board of Assessors (not the city).Appeal deadline: 45 days from your assessment notice date.
Stone Mountain is a small DeKalb County city near the famous granite landmark, where the median home value of about $206,000 runs more than 40% below the county median. With tax bills that can still top $2,300, making sure your assessment matches local sale prices -- not DeKalb's pricier neighborhoods -- is worth the effort.
Property Tax Rates in Stone Mountain
Stone Mountain property taxes are assessed and collected by DeKalb County. Georgia assesses all property at 40% of fair market value.
Here is how the tax math works for the median Stone Mountain home:
Fair Market Value (county assessment): $206,400
Assessed Value ($206,400 x 0.40): $82,560
Tax Rate (DeKalb County combined rate): 4.379%
Annual Tax Bill ($82,560 x 4.379%): $3,615
The Census Bureau reports a median annual tax bill of $2,352 for Stone Mountain, which reflects all levies including county, school, and city taxes.
How Stone Mountain Compares
Stone Mountain: $206,400
DeKalb County: $357,800
Georgia (statewide): $170,200
Homes in Stone Mountain are valued 42% below the DeKalb County median. Lower values do not mean your assessment is automatically correct - overassessments happen at every price point. The median annual tax bill in Stone Mountain ($2,352) is 63% above Georgia's statewide median of $1,439. Home values in DeKalb County range from about $237,245 (25th percentile) to $559,874 (75th percentile), so your appeal savings depend heavily on where your home falls in that range.
How to Appeal Your Stone Mountain Property Tax
Property tax appeals in Stone Mountain are handled by the DeKalb County Board of Assessors. You have 45 days from the date of the assessment notice to file using the PT-311A form.
Based on a combined tax rate of 4.379%. Your actual rate may vary by tax district.
A 10% reduction on the median Stone Mountain home ($206,400 down by $20,640) would save approximately $362 per year - or $1,086 over three years with the 299c freeze.
The median annual property tax bill in Stone Mountain is $2,352, based on Census ACS 2024 data. Using DeKalb County's millage rate of 4.379%, the computed tax on the median home ($206,400) is approximately $3,615.
Who do I contact to appeal my Stone Mountain property tax?
Appeals are filed with the DeKalb County Board of Assessors, not at the city level. File a PT-311A form within 45 days of your assessment notice.
Are Stone Mountain homes undervalued compared to DeKalb County?
Stone Mountain's lower median does not mean the county's assessment of your specific home is correct. Overassessments happen at every price point. Compare your assessed value per square foot to actual recent sales of similar homes nearby.
How is my Stone Mountain property tax bill calculated?
Georgia taxes property at 40% of fair market value. For Stone Mountain's median home ($206,400), the assessed value is $82,560. Multiply by DeKalb County's millage rate of 4.379% to get your annual bill. Many Stone Mountain homeowners find that assessed values have climbed faster than actual sale prices. Comparing your value to 3-5 recent sales of similar homes is the quickest way to spot an overassessment.
Is it worth appealing a small overvaluation in Stone Mountain?
Yes. Even a $175 per year overcharge (from a $10,000 overvaluation at DeKalb County's 4.379% rate) adds up to $525 over three years with the 299c freeze. The appeal is free to file and there is no risk of your assessment increasing.
Why is my Stone Mountain property tax bill so high?
The median tax bill in Stone Mountain is $2,352 -- 63% above Georgia's statewide median of $1,439. This reflects both higher home values and DeKalb County's combined millage rate. If your individual assessment is higher than what your home would actually sell for, you are paying even more than necessary.
Can my property tax go up if I appeal?
No. Georgia law (O.C.G.A. § 48-5-311) protects you: the county cannot raise your assessed value above what they originally set just because you filed an appeal. The Board of Equalization only rules on the disputed value. Worst case, your appeal is denied and you keep your current assessment -- your taxes will not increase as a result of appealing.