Cobb Property Tax impacts every homeowner, and the Cobb County tax assessor office publishes the 2026 property tax calendar online for quick reference. Residents can check the Cobb County GIS property values and use the Cobb County real estate tax calculator to estimate their bill before the Cobb County tax bill due dates arrive. The Cobb County homestead exemption eligibility criteria are explained on the assessor’s portal, helping eligible families claim the Cobb County property tax exemptions they deserve. If a notice seems wrong, the Cobb County property tax notice explanation guides you through the Cobb County tax protest filing and the required Cobb County property tax assessment appeal forms. For any questions, the Cobb County tax collector contact details are listed alongside payment options, escrow guidance, and information on Cobb County delinquent tax penalties.
Cobb Property Tax refunds are processed quickly when the Cobb County property tax refund process is followed, and the Cobb County tax lien sales page details how unpaid balances are handled. The Cobb County school district tax rate and Cobb County millage rate 2026 are broken down so owners understand their total liability. To verify ownership or parcel data, the Cobb County tax parcel lookup tool links directly to the assessor’s database. When you need help, the Cobb County Property Assessor’s Office can be reached at (770) 528‑3100 or cobbassessor@cobbcounty.org, and they assist with mortgage escrow property tax questions and filing an appeal on how to appeal Cobb County property tax.
Search Cobb County Property Tax
The official source for Cobb Property Tax records sits on the Cobb County Property Assessor’s Office website. Open the public search portal at https://www.cobbassessor.org and click the Property Search tab on the top menu. Enter the parcel number, owner last name, or street address into the search field and press Enter to load the matching record.
Once the result list appears, select the parcel ID to view assessed value, exemptions, and the most recent tax year billed. The summary page also shows the tax district code, millage area, and the due dates for any unpaid balance. Use the print icon to save a PDF copy for your records or your mortgage company.
- Step 1: Visit https://www.cobbassessor.org
- Step 2: Click Property Search in the main menu
- Step 3: Choose a search method (parcel ID, owner name, address, or map)
- Step 4: Review assessed value, exemptions, and tax year status
- Step 5: Download or print the record for your files
Cobb County Tax Assessor Office Functions
The Cobb County Property Assessor’s Office maintains fair market value on every parcel in the county for tax billing purposes. The office reviews property transfers, issues annual assessment notices, and processes exemption applications. Staff also answer questions about ownership changes, building permits, and outbuilding valuations that affect the final bill.
Public records on file include land size, structure square footage, year built, and any special features that add to value. The office uses these data points to calculate assessed value, which the Cobb County Tax Commissioner applies against the current millage rate to produce the tax bill.
- Annual real property assessment updates
- Personal property return processing for business owners
- Homestead and senior exemption approvals
- Parcel map maintenance and GIS data hosting
- Appeal intake for disputed valuations
Cobb County Property Tax Exemptions
Cobb County property tax exemptions reduce the taxable assessed value on a qualifying parcel. Standard homestead, senior homestead, and disability exemptions apply to the primary residence of an eligible owner. Disabled veterans, surviving spouses, and certain nonprofit properties may qualify for full or partial value exclusions.
Applications are filed with the assessor’s office and renew on a set schedule. A standard homestead exemption stays in place as long as you occupy the home, but a senior exemption requires annual income verification in some cases. Keep your exemption file number handy when calling the assessor’s office for status checks.
| Exemption Type | Eligible Applicant | Value Reduction |
|---|---|---|
| Standard Homestead | Owner-occupied primary residence | $2,000 from assessed value |
| Senior Homestead | Age 65 or older, primary residence | Additional $4,000 reduction |
| Disability Exemption | Disabled homeowner or veteran | Varies by disability level |
| Veteran Service Exemption | Veteran with qualifying service record | Up to full assessed value |
| Conservation Use | Qualified agricultural or timber land | Special valuation rate |
Cobb County Tax Calendar
The Cobb County property tax calendar lists every key date for billing, appeals, and payment deadlines. Assessment notices typically mail in the spring, giving owners 45 days to file an appeal before the value is locked in for the year. Tax bills mail in late summer with a due date that falls in the fall of the same year.
Delinquent dates begin the day after the due date and trigger penalty and interest charges. The tax lien sale date, if applicable, is posted on the tax commissioner’s page. Mark these dates on a household calendar to avoid missing a window.
| Event | Typical Date Window |
|---|---|
| Assessment notice mailed | Late March to early May |
| Appeal filing deadline | 45 days from notice date |
| Tax bill mailed | Late July to early August |
| Tax payment due | November 15 (or next business day) |
| Delinquent penalty start | Day after due date |
| Tax lien sale (if any) | First Tuesday in December |
Cobb County Real Estate Tax Calculator
The Cobb County real estate tax calculator helps owners estimate a yearly tax bill before the official notice arrives. The tool multiplies the assessed value by the combined millage rate, then subtracts any exemptions the owner has on file. The result is a close estimate of what the bill will say when it lands in your mailbox.
To use the calculator, pull the latest assessed value from https://www.cobbassessor.org, then apply the millage rate for your tax district. The Cobb County school district tax rate, the county general rate, and any city or special district rate all stack together to form the final number.
- Step 1: Find your assessed value on the assessor site
- Step 2: Locate your millage rate by tax district
- Step 3: Multiply assessed value by millage rate
- Step 4: Subtract the value of any active exemptions
- Step 5: Compare the estimate to the bill when it arrives
How to Appeal Cobb County Property Tax
The Cobb County tax protest filing process gives owners a legal path to challenge an assessment they believe is too high. An appeal must be filed within 45 days of the assessment notice date using the official form posted on the assessor’s website. Missing the window closes the door on that tax year, so file early.
Gather three things before you start: a copy of the notice, recent sale prices of similar nearby homes, and any photos showing defects or issues that lower value. A successful appeal usually rests on a solid comp set, not just a personal opinion. If the board denies your appeal, you can escalate to the superior court within a set window.
- Download the appeal form from the assessor site
- Complete owner and parcel information exactly as printed
- State your requested value and reason for the request
- Attach supporting comps and documentation
- Submit the form online, by mail, or in person before the deadline
Cobb County Homestead Exemption Eligibility
Cobb County homestead exemption eligibility covers any owner who uses the property as their primary residence on January 1 of the tax year. You must own the home, occupy it as your main address, and not claim a homestead exemption on any other property in Georgia. Filing the form freezes the school tax portion of the bill at the prior year’s level once it is approved.
Married couples, single owners, and joint tenants all qualify as long as the residency test is met. A second home, rental property, or land held for investment does not qualify. You can file the form online through the assessor portal or in person at the office.
- Owner of record on January 1
- Primary residence, not a rental or vacation home
- No other active homestead exemption in Georgia
- Valid identification and proof of residency
- One application per qualifying property
Cobb County Tax Lien Sales
Cobb County tax lien sales allow investors to purchase the right to collect unpaid property taxes from delinquent owners. The sale takes place on the first Tuesday in December at the courthouse in Marietta. Winning bidders pay the delinquent amount plus fees and later collect the debt plus interest from the property owner.
Property owners can stop a lien sale by paying the full delinquent amount, penalties, and interest before the sale begins. The tax commissioner’s page posts a list of parcels heading to sale, the minimum bid, and the steps to redeem. If a lien is not redeemed within the legal window, the lien holder can pursue foreclosure on the parcel.
- Sale date: First Tuesday in December
- Location: Cobb County Courthouse, Marietta
- Minimum bid: Delinquent tax plus fees
- Redemption period: Set by Georgia state law
- Payment methods: Wire, certified funds, or online portal
Cobb County Property Tax Payment Options
Cobb County offers several ways to pay a tax bill, including online, by mail, by phone, and in person at the tax commissioner’s office. Online payments accept e-check or credit card and post the same business day in most cases. Mailed payments must include the bill stub and reach the office on or before the due date.
Owners with mortgage escrow accounts usually have the lender pay the bill from the escrow fund, but the homeowner stays responsible if the lender misses a payment. Setting up auto-pay through the tax portal removes the risk of a late penalty. Partial payments are accepted and applied to the oldest year first.
| Payment Method | Processing Time | Convenience Fee |
|---|---|---|
| Online e-check | Same day | Lowest fee |
| Online credit card | Same day | Higher fee applies |
| Mail (check) | 3 to 5 business days | No fee |
| Phone payment | Same day | Card fee applies |
| In person | Same day | No fee for cash or check |
Cobb County Delinquent Tax Penalties
Cobb County delinquent tax penalties begin the day after the tax due date and grow quickly. A standard penalty plus interest accrues monthly on any unpaid balance, and the rate is set by Georgia state law. The longer a bill goes unpaid, the higher the total cost of redeeming the parcel becomes.
Interest stops accruing once a tax lien is sold, but a separate redemption rate applies until the owner pays the debt in full. A parcel can head to a tax lien sale after the delinquency period passes, putting the title at risk. Owners with a hardship can request a payment plan through the tax commissioner’s office to avoid those steps.
- Late penalty: Added the day after the due date
- Interest: Compounds monthly at the state-set rate
- FIFO rule: Payments apply to the oldest tax year first
- Lien sale risk: Activates after the legal delinquency period
- Payment plans: Available by request for qualifying owners
Cobb County Property Tax Refund Process
The Cobb County property tax refund process kicks in when a bill is overpaid, an exemption is approved after billing, or a duplicate payment is posted. The tax commissioner’s office reviews the account, confirms the credit, and issues a refund check or applies the credit to the next tax year. Refunds typically process within 30 to 60 days of a clean application.
To start a refund request, submit proof of overpayment, the parcel ID, and a W-9 if the refund is large. Mortgage companies sometimes request a refund be sent directly to the escrow account, which the tax office handles with a signed letter from the lender. Track the status by phone or by checking the online tax history.
- Confirm the overpayment on the tax history page
- Gather supporting documents (canceled check, escrow statement)
- Submit a refund request form to the tax commissioner
- Include a signed W-9 for refunds over a set threshold
- Allow 30 to 60 days for processing and mailing
Cobb County GIS Property Values
Cobb County GIS property values combine parcel lines, ownership data, and the latest assessment on a single map. The GIS portal layers school zones, flood plains, and zoning overlays on top of the parcel data, so owners can see how each factor affects the bill. The map refreshes after each annual assessment cycle.
Search by parcel ID or address to load the property card, which lists acreage, structure size, year built, and last sale price. Compare your numbers to neighbors on the same map to spot possible assessment errors. Print the map view as a PDF for use in an appeal or for personal records.
- Search by parcel ID, owner name, or address
- View parcel lines, zoning, and district boundaries
- Check school zone and flood plain overlays
- Print property cards for appeal files
- Measure acreage and structure footprint on the map
Cobb County School District Tax Rate
The Cobb County school district tax rate covers the local public school system and is a major part of the total bill. The rate sits in the millage table published by the tax commissioner and changes when the school board adopts a new budget. The homestead exemption freezes the school portion at the prior year’s level once approved.
Owners outside the Cobb County school district, such as those in Marietta City Schools, pay a different school rate. The tax bill lists the school rate on the second page of the breakdown. Watching the board’s budget hearings each spring helps you predict next year’s school tax shift.
| Tax District Type | Typical Millage Components | Notes |
|---|---|---|
| Unincorporated Cobb County | County, school, state, special | Largest district in the county |
| City of Marietta | City, Marietta Schools, county | Different school rate applies |
| City of Smyrna | City, county schools, state | School rate matches unincorporated |
| City of Kennesaw | City, county schools, state | School rate matches unincorporated |
| City of Acworth | City, county schools, state | School rate matches unincorporated |
Cobb County Millage Rate
The Cobb County millage rate stacks together all the taxing authorities that bill your parcel in a given year. Each authority sets its own rate, and the tax commissioner combines them into one total millage on the bill. One mill equals one dollar of tax for every thousand dollars of assessed value.
A common Cobb County unincorporated total sits in the range of 27 to 32 mills, but the exact number changes yearly. City residents pay a slightly different total because the city rate is added or replaced with a county rate depending on the jurisdiction. The full rate table is posted on the tax commissioner page after the budget adoption each year.
- One mill = $1 tax per $1,000 of assessed value
- County general millage funds roads, courts, and services
- School millage funds the public school system
- City millage funds police, fire, and local services
- State millage funds statewide education programs
Cobb County Mortgage Escrow Property Tax
Cobb County mortgage escrow property tax payments happen when the lender collects a portion of each monthly mortgage payment and uses the fund to pay the tax bill. Most lenders request a copy of the bill and pay it from the escrow account before the due date. Homeowners still receive a copy of the bill for their records.
An escrow shortage or surplus can show up each year after the lender runs an analysis in January. A shortage is paid in full or spread across 12 months, while a surplus refunds or reduces the next year’s escrow. Tax bills that increase sharply can trigger a sudden shortage that surprises owners.
- Monthly escrow collection covers tax and insurance
- Lender pays the bill directly to the tax office
- Annual escrow analysis reflects new tax amounts
- Shortage spread over 12 months reduces payment shock
- Surplus refunded or applied to next year escrow
Cobb County Property Tax Notice Explanation
The Cobb County property tax notice explanation breaks down every line of the bill so owners understand what they are paying. The top of the bill lists the parcel ID, owner name, and the tax year being billed. The middle section shows the assessed value, exemptions applied, and the taxable value used in the calculation.
The bottom of the bill shows the millage rate and the total tax amount, followed by a payment slip with a barcode for fast processing. A separate insert explains the appeal deadline and lists the steps for filing a protest. Read the insert carefully so you do not miss a key date.
- Parcel ID, owner name, and tax year at the top
- Assessed value, exemptions, and taxable value in the middle
- Millage rate and total tax at the bottom
- Payment slip with barcode on the return portion
- Appeal instructions and deadline on the insert page
Cobb County Tax Parcel Lookup
The Cobb County tax parcel lookup tool links a parcel ID to its full record on the assessor and tax websites. Parcel IDs in Cobb County use a numbering pattern tied to the land lot and district where the property sits. Knowing the parcel ID speeds up searches for assessed value, tax status, and ownership history.
Pull the parcel ID from a current tax bill, a closing document, or by searching the owner name on the assessor site. Once you have the ID, the GIS map and the tax history page both load faster because the system skips the name search step. The parcel ID stays the same even when the property changes hands.
- Source 1: Current Cobb County tax bill
- Source 2: Closing document or warranty deed
- Source 3: Owner name search on the assessor site
- Use the ID for faster GIS and tax history lookups
- Parcel ID stays the same across ownership changes
Cobb County Tax Bill Due Dates
Cobb County tax bill due dates fall on November 15 of each year, or the next business day if November 15 lands on a weekend or holiday. The bill mails in late summer and gives owners several months to plan payment. Missing the due date triggers a penalty plus interest, so paying on time protects the parcel from extra costs.
Bills can be paid in two installments when billed under a special installment plan for homesteaded properties. Standard bills are due in full by the single fall deadline. Owners can also pre-pay a future year’s bill to reduce next year’s escrow shortage.
- Standard due date: November 15 (or next business day)
- Mailed bills: Late July to early August
- Installment plans: Available for qualifying homesteaded parcels
- Prepayments: Accepted for the next tax year
- Late penalty: Starts the day after the due date
Cobb County Tax Protest Filing
Cobb County tax protest filing starts with a written appeal submitted to the county board of equalization. The appeal must list the parcel ID, owner name, the current assessed value, and the value the owner requests. A clear, fact-based reason for the request strengthens the file and avoids a quick denial.
Include at least three comp sales from the past 12 months within the same neighborhood and similar size. Photos of any property defects, dated repair estimates, or income figures for rental parcels can support the case. The board schedules a hearing and mails a notice with the date, time, and location.
- Pull the parcel ID and current assessed value
- Collect three to five comp sales from the same neighborhood
- Complete the appeal form on the assessor site
- Attach photos, repair estimates, or income data
- Submit the file before the 45-day deadline
- Appear at the hearing with your comp set ready
Cobb County Property Tax Assessment Appeal Forms
Cobb County property tax assessment appeal forms are available on the assessor website and at the assessor office in Marietta. The most common form covers real property, while separate forms cover personal property and business returns. Filling the right form for the right asset type keeps the appeal on track.
Print the form in black ink, sign and date the bottom, and mail or deliver it to the assessor office. The form asks for daytime contact details, the requested value, and a brief statement of the appeal reason. Keep a copy of the filed form and the postmarked envelope for your records.
- Form PT-50: Real property residential appeal
- Form PT-50P: Personal property business appeal
- Form CUVA: Conservation use valuation appeal
- Submit by mail, in person, or through the online portal
- Keep a signed copy with the postmark date for your file
Contact, Local Details, and Map
The main offices that handle Cobb Property Tax records and payment processing sit in Marietta, Georgia. Each office handles a different slice of the tax process, so calling the right one first saves time. Use the details below to reach the team that matches your need.
Tax Assessor
- Department: Cobb County Property Assessor’s Office
- Official Website: https://www.cobbcounty.org
- Direct Public Search Portal: https://www.cobbassessor.org
- Main Phone: (770) 528-3100
- Official Email: cobbassessor@cobbcounty.org
- Physical Address: 736 Whitlock Avenue, Suite 200, Marietta, GA 30064
- Mailing Address: 736 Whitlock Avenue, Suite 200, Marietta, GA 30064
Deed Recorder
- Department: Cobb County Clerk of Superior Court
- Official Website: https://www.cobbsuperiorcourtclerk.com
- Direct Public Search Portal: https://www.gsccca.org
- Main Phone: (770) 528-1360
- Official Email: RealEstateLienDesk@cobbcounty.org
- Physical Address: 10 East Park Sq, Marietta, GA 30090
- Mailing Address: 10 East Park Sq, Marietta, GA 30090
Frequently Asked Questions
Cobb Property Tax affects every homeowner and buyer in the county. Knowing how to find assessments, claim exemptions, or contest a bill saves money and avoids penalties. The Assessor’s Office, Tax Collector, and online portals make information easy to reach.
How do I look up my Cobb Property Tax bill online?
Visit the Cobb County Property Assessor’s public portal at https://www.cobbassessor.org. Click Property Search, then enter the parcel number, owner name, or street address. The system displays assessed value, current exemptions, and the full tax bill. Use the “Print” button to save a copy for records or to compare against the bill sent by the Tax Collector.
What exemptions are available for Cobb County property owners?
The county offers a homestead exemption, senior citizen exemption, and disabled veteran exemption. To qualify, fill out the appropriate form on the assessor’s site and attach proof of residency or eligibility. Once approved, the exemption reduces the taxable value, lowering the yearly payment. Apply before the deadline listed on the 2026 tax calendar to receive the benefit for that year.
How can I appeal my Cobb County property tax assessment?
Start by downloading the Assessment Appeal Form from the assessor’s website. Complete the form, attach recent sales data or independent appraisals, and mail it to 736 Whitlock Avenue, Suite 200, Marietta, GA 30064. The deadline is usually 30 days after the assessment notice. After filing, a hearing officer will review the evidence and issue a revised value if justified.
Where can I find the Cobb County 2026 tax calendar and payment due dates?
The 2026 calendar lists quarterly due dates: January 15, April 15, July 15, and October 15. It also highlights early‑payment discounts and late‑fee thresholds. Access the calendar through the Tax Collector’s page or the assessor’s portal under “Tax Calendar.” Mark these dates on a personal reminder system to avoid delinquent penalties.
What steps should I follow to request a Cobb County property tax refund?
If you overpaid, file a Refund Claim Form available on the Tax Collector’s website. Include a copy of the paid bill, proof of payment, and any exemption approval letters. Mail the packet to the Collector’s office at 736 Whitlock Avenue, Suite 200, Marietta, GA 30064. Refunds are processed within 45 days, and you’ll receive a check or direct deposit notice.