Cobb County Property Tax Lookup, Online Payment, Rates and Appeal Help
A practical Cobb County Georgia property tax guide for homeowners, buyers, landlords and investors who need to search a tax bill, pay online, calculate tax, check millage rates, review exemptions or appeal a high assessment.
🔒 Official Cobb County Property Tax Resources
Cobb County Property Tax Lookup, Payment and Assessment Basics
Cobb County property tax becomes easier when you separate the payment office from the assessment office. The Tax Commissioner bills and collects taxes. The Board of Tax Assessors values property and handles assessment notices, property records and appeals.
Cobb County property tax bills can include county general, county fire, county school, CID and special district taxes. The 2025 Cobb millage chart also notes that each of the seven cities bills and collects its own city property taxes.
That means a home in Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, Austell or Mableton may have city tax considerations that differ from a county-only unincorporated Cobb property.
| Need | Best Official Place | What You Can Do |
|---|---|---|
| Pay county property tax | Cobb Tax Commissioner | Search bill, pay online, pay by phone, mail payment or visit office. |
| Search assessment record | Cobb Board of Tax Assessors / qPublic | Check fair market value, property data, parcel, owner and assessment details. |
| Check millage rates | Cobb Tax millage rate page | Review current county, school, fire, CID and special district millage rates. |
| Apply homestead | Cobb Tax exemption resources | Check basic, senior, disability or other qualifying exemptions. |
| Appeal fair market value | Board of Tax Assessors | File appeal within 45 days of annual notice of assessment mailing date. |
How to Look Up Cobb County Property Tax by Address, Owner or Parcel
Use two lookups for a complete view: Cobb Tax for the bill and payment balance, and the Cobb assessment record for fair market value, property characteristics and appeal evidence.
1
Open the official Cobb Tax property page
Best for tax bills, balance and payment status
Start with Cobb Tax when your goal is to pay, confirm whether a bill is due, print payment proof or check a delinquent balance.
Search carefully and confirm the owner name, property address, tax year and bill amount before payment.
2
Open the assessment property record
Best for value, property details and appeal research
Use the Cobb County assessment record when you need fair market value, land details, improvement data, property characteristics or comparable research before an appeal.
The assessment record is not the same as the tax bill. It explains the value side of the tax calculation.
3
Search with less text first
Address formatting can block results
For address search, use house number and main street name first. Avoid punctuation, unit number and street suffix if the search does not work.
For owner search, use the most unique part of the name. LLCs, trusts and estates may not match exactly as expected.
4
Save both bill and assessment record
Useful for closing, refinance, escrow and appeals
Save the tax bill, receipt, assessment notice, property record, exemption status and millage-rate detail by tax year. It helps with sale, refinance, protest, accounting and escrow questions.
How to Pay Cobb County Property Tax Online, by Phone, Mail or In Person
Cobb Tax provides several property tax payment options. Recent Cobb Tax bill notice information has listed online payment by e-check, debit or credit card, automated phone payment and mail payment to the Cobb County Tax Commissioner.
Online payment
Best when you want fast confirmation and direct access from the official Cobb Tax property page.
Phone payment
Cobb Tax bill notice information lists the automated system at 1-866-PAY-COBB.
1
Start from the official Cobb Tax website
Avoid ads and unofficial payment pages
Open Cobb Tax property division and use the official search/pay path. Verify the website before entering payment information.
2
Confirm the tax year and parcel
Owner-name search can show multiple properties
Confirm property address, parcel, owner, tax year, current balance, exemption status and any penalty or interest before payment.
If you own more than one property, double-check every parcel before submitting payment.
3
Use phone or mail only with official details
Keep proof if paying near deadline
Cobb Tax bill notice information lists the automated phone payment system as 1-866-PAY-COBB, which is 1-866-729-2622.
For mail, Cobb Tax notice information lists Cobb County Tax Commissioner, PO Box 100127, Marietta, GA 30061. Use the address shown on your latest official bill if it differs.
4
Save the official receipt
Important for escrow, sale, refinance and audit trail
Save the payment confirmation, parcel, tax year, amount paid and receipt. Then recheck the account after processing to make sure the record shows paid.
Cobb County Property Tax Rates, Millage and Calculator Basics
Cobb County property tax is calculated from fair market value, Georgia’s 40% assessment ratio, exemptions and the millage rate that applies to the property location.
Fair market value
Set by the Board of Tax Assessors and shown on annual assessment notice.
Assessed value
Georgia commonly uses 40% of fair market value for tax calculation.
Millage rate
Each mill equals $1 tax per $1,000 of assessed value.
| 2025 Rate Item | Official Detail | Why It Matters |
|---|---|---|
| County General | 8.46 mills | Main county general fund line item on Cobb county bills. |
| Cobb School | 18.70 mills | Often one of the largest parts of Cobb County tax bills. |
| County Fire | May apply by district | Properties in fire district areas may include fire millage. |
| CID | Cumberland / Town Center areas may differ | Commercial or district-area properties may have extra CID lines. |
| City property tax | Billed separately by cities | Marietta, Smyrna, Kennesaw, Acworth, Powder Springs, Austell and Mableton may collect city taxes separately. |
| Homestead impact | Basic exemption savings vary by bill | Exemptions reduce taxable value and can lower the bill. |
1
Find fair market value
Use annual notice or assessment search
Use the Cobb assessment record or annual notice of assessment to find fair market value. This value drives the tax calculation and appeal decision.
2
Apply 40% assessment ratio
Georgia assessed value is generally 40% of fair market value
Multiply fair market value by 0.4 to estimate assessed value before exemptions. Then account for homestead or other exemptions if eligible.
3
Apply the correct millage area
County-only, city, fire, CID and special districts matter
Use the millage shown for the property’s actual district. Do not use one county-wide number if the property is inside a city, fire district, CID or special district.
Cobb County Homestead Exemption, Senior Exemption and Tax Savings Checks
Cobb County homeowners should check exemption status after buying a home, changing ownership, turning 62/65, becoming disabled, moving into the property or changing deed/title setup.
Basic homestead
For eligible owner-occupants using the home as their legal residence.
Senior exemptions
Additional savings may be available based on age and eligibility.
Disability / special
Special exemptions may apply for disabled owners, veterans or other qualifying categories.
1
Check exemption after purchase
Do not assume the seller’s exemption continues for you
New homeowners should confirm exemption status after closing. If the property becomes your legal residence, review Cobb homestead rules and file before the applicable deadline.
2
Review senior and school-tax savings
Age-based exemptions can be important in Cobb
Cobb County is known for senior-related homestead exemptions, including school tax-related relief for qualifying owners. Check the official exemption page and confirm eligibility before assuming savings.
Keep age proof, residency proof, deed/title details and prior exemption records ready.
3
Verify exemption on the bill
Approval should appear in tax calculations
After approval, check your tax bill and assessment record. If the exemption is missing, contact the official office quickly with proof of approval or application.
Cobb County Property Tax Appeal and Assessment Review Help
In Cobb County, you do not appeal the tax bill amount directly with the Tax Commissioner. You appeal the fair market value or other assessment issues with the Board of Tax Assessors within the legal appeal window.
Value too high
Use comparable sales, appraisal reports and market evidence.
Uniformity issue
Compare similar nearby properties assessed lower than yours.
Property data error
Check square footage, land size, class, condition and improvements.
1
Read the Annual Notice of Assessment
This is not the tax bill, but it starts the appeal clock
Georgia DOR explains that the annual notice of assessment gives taxpayers information on filing a property tax appeal. Review fair market value, property characteristics and appeal deadline immediately.
Do not wait for the tax bill if you disagree with value. By bill season, the appeal deadline may be closed.
2
File within 45 days of the notice date
Georgia DOR deadline is strict
Georgia DOR says an appeal must be sent to the county board of tax assessors and postmarked no later than 45 days from the mailing date of the notice of assessment.
Use the official appeal instructions on your Cobb notice and keep proof of mailing or delivery.
3
Choose the correct appeal route
Georgia appeal forms ask for method of appeal
Georgia’s appeal form requires the owner to declare the method of appeal. Common routes may include Board of Equalization, arbitration, hearing officer or other eligible route depending on the property and issue.
4
Prepare evidence before filing
Good evidence beats general complaints
Prepare comparable sales, appraisal reports, photos, repair estimates, inspection reports, proof of incorrect square footage, listing history and comparable assessment examples.
Do not only say “taxes are too high.” Explain why fair market value, uniformity, exemption or property details are wrong.
Real Cobb County Property Tax Tips That Prevent Costly Mistakes
Cobb property tax users often mix up the Tax Commissioner, Board of Assessors, city tax bills, homestead, millage and appeal deadlines. These checks keep the process clean.
Appeal the notice, not the bill
The annual assessment notice starts the 45-day appeal clock. Do not wait until tax bills are mailed.
Check city tax separately
Cobb cities bill and collect their own city property taxes. County payment may not cover city tax.
Use 40% calculation
Georgia property tax uses assessed value, commonly 40% of fair market value, before millage applies.
Confirm homestead yearly
After purchase, deed change or senior eligibility, check whether exemption appears correctly.
Watch CID and fire lines
Cumberland, Town Center, fire and special districts can change the total millage.
Verify levy letters
If a tax auction or levy letter arrives, verify through Cobb Tax Levy Department before paying anyone.
Cobb County Property Tax Due Dates, Assessment Notices and Appeal Calendar
Cobb property owners should track three different timelines: assessment notice/appeal, homestead exemption filing and tax bill payment.
| Date / Timing | Common Event | What You Should Do |
|---|---|---|
| January 1 | Ownership and property status date | Check homestead eligibility, age requirements and property use status. |
| Spring / assessment notice season | Annual notice of assessment | Review fair market value, property data and appeal deadline immediately. |
| 45 days from notice date | Assessment appeal deadline | File written appeal with the Board of Tax Assessors before deadline. |
| Late July / early August | Millage rates posted after approval | Review current county, school, fire, CID and special district rates. |
| Bill mailing season | Property tax bills issued | Search bill, confirm balance, exemption and payment deadline. |
| Due date on bill | Tax payment deadline | Pay on time and save receipt. Check city bills separately if applicable. |
| After due date | Penalty, interest or levy risk | Confirm updated payoff and verify any tax-sale notice directly with Cobb Tax. |
Cobb Tax Offices, Assessor Help and Contact Details
Use Cobb Tax for payments, bills, receipts and levy questions. Use the Cobb Board of Tax Assessors for value, property records, exemptions and assessment appeal questions.
Cobb Tax East Satellite Office
4400 Lower Roswell Rd, Marietta, GA 30068
Property Division Phone: 770-528-8600
| Office / Resource | Use For | Official Detail |
|---|---|---|
| Cobb Tax Property Division | Bills, payments, receipts, due balances | 770-528-8600 • cobbtax.gov/property/ |
| Cobb Tax Levy Department | Tax auction / levy verification | 770-528-8623 |
| Board of Tax Assessors | Fair market value, property records, appeals | Use assessment notice and official assessor property search. |
| Georgia Department of Revenue | State property tax appeal forms and county property tax facts | dor.georgia.gov |
| Cobb cities | City property taxes where applicable | Each city bills and collects its respective city taxes. |
Cobb County Property Tax Questions and Answers
These answers cover common searches like Cobb County property tax lookup, online payment, millage rates, homestead exemption, appeal deadline and Tax Commissioner versus Tax Assessor questions.
Where do I pay Cobb County property taxes online?▾
Use the official Cobb County Tax Commissioner property tax page. Start from cobbtax.gov/property/ and confirm the parcel, owner, tax year and amount before payment.
How do I look up Cobb County property tax by address?▾
Use Cobb Tax for the bill and payment record. Use the Cobb assessment property search for fair market value, property characteristics and appeal research.
Who collects Cobb County property taxes?▾
The Cobb County Tax Commissioner bills and collects county-related property taxes, including county, school, CID and certain special district taxes.
Who handles Cobb County property value and appeals?▾
The Cobb County Board of Tax Assessors handles fair market value, annual assessment notices, property records and assessment appeals.
How long do I have to appeal a Cobb County assessment?▾
Georgia DOR says appeals must be sent to the county board of tax assessors and postmarked no later than 45 days from the mailing date of the notice of assessment.
How is Cobb County property tax calculated?▾
Cobb Tax gives the formula: Fair Market Value × 0.4 × Millage Rate / 1,000 = Ad Valorem Tax. Exemptions and special districts can change the final amount.
What are Cobb County 2025 millage rates?▾
Cobb’s 2025 millage chart lists County General at 8.46 mills and Cobb School at 18.70 mills. Your total may include fire, CID, special district or city taxes.
Do Cobb cities bill property tax separately?▾
Yes. Cobb’s millage chart notes that each of the seven cities bills and collects its own city property taxes. Check your city if the property is inside city limits.
What is the Cobb Tax phone number?▾
Cobb Tax locations list the Property Division phone number as 770-528-8600. For levy/tax auction verification, Cobb Tax lists 770-528-8623.
Is PropertyTaxUSA.org an official Cobb County website?▾
No. PropertyTaxUSA.org is an independent informational guide. Always use official Cobb Tax, Cobb Board of Tax Assessors and Georgia Department of Revenue resources for property-specific actions.
Before You Pay, Calculate or Appeal Cobb County Property Tax
Search the official Cobb Tax bill first, then compare it with the assessment record. Confirm fair market value, 40% assessed value, homestead exemption, millage district, city tax responsibility and payment deadline.
If the issue is payment, receipt, bill balance or levy warning, use Cobb Tax. If the issue is value, property characteristics, exemption or appeal, use the Board of Tax Assessors and act within the 45-day appeal window from the assessment notice date.