Quick answer
Georgia assesses most property at 40% of fair market value, then applies county, city and school millage rates to that assessed value. If you disagree with the value, you generally must file a written appeal with the county board of tax assessors within 45 days of the date the notice of assessment was mailed (O.C.G.A. § 48-5-311). Filing does not by itself stop the tax from being due, so pay attention to both the appeal deadline and the payment deadline.
Why a Georgia tax bill is not stable by default
Georgia’s system has two moving parts. The first is the assessed value, which for most property is 40% of fair market value under the statewide standard. The second is the millage rate, set annually by each county, municipality and school district. Multiply them and you have the bill. Because both halves move, a rental’s property tax burden is never a fixed line item — it is a variable that has to be modelled every single year.
The part investors underestimate is reassessment. Georgia counties reassess on their own schedules, and a sale is one of the clearest signals a county gets that its value may be out of date. Buy a tired rental for $185,000, renovate it, and lease it for a rent that supports a $265,000 value — and the county’s next look at that parcel may reflect the improvement. That is not a penalty; it is the same 40% rule applied to a better-informed number.
The practical consequence is that a coverage ratio modelled on the seller’s tax bill can miss once the county catches up. We build the post-closing tax figure into the model, and we tell investors to watch for the assessment notice in the first year.
The appeal window: 45 days from the mailing date
Georgia’s appeal process begins with the notice of assessment that the county board of tax assessors mails to the property owner. Under O.C.G.A. § 48-5-311, the owner generally has 45 days from the date the notice was mailed to file a written appeal with the board of tax assessors. That is a hard deadline tied to the mailing date, not to the date you happened to receive the envelope — so the notice itself is the document to keep.
An appeal is typically based on one of a few grounds: the value is too high, the property is not taxable as assessed, or the assessment is not uniform compared with similar property in the county. The appeal is filed with the board of tax assessors, and the county then either corrects the value or moves the dispute forward to the board of equalization. Beyond that, Georgia provides for further review through arbitration or a hearing officer in appropriate cases, and ultimately the courts.
One caution that catches owners every year: filing an appeal does not suspend the obligation to pay. Georgia taxes generally still come due on the county’s schedule while an appeal works its way through the process, and any adjustment is reconciled afterward. The appeal protects the value; it does not postpone the bill.
- Keep the original notice of assessment — the 45-day clock runs from its mailing date.
- File in writing with the county board of tax assessors, not by phone.
- Pay on schedule while the appeal proceeds; confirm your county’s reconciliation practice.
- Track the appeal status — a missed response can end an appeal before it is decided.
What evidence actually moves a Georgia appeal
Counties respond to evidence they can check against their own records. The strongest support is recent comparable sales in the same submarket, ideally of properties in similar condition, taken from the county’s own sales database or the multiple listing service. If three genuinely comparable houses sold for materially less than the assessed value implies, that is an argument the board can evaluate on its own terms.
For a rental property, the income approach is often the more persuasive line of attack, because it speaks the language of the asset. If the property’s actual rent and realistic operating expenses support a lower value than the assessor’s figure, present the rent roll, the leases and a simple operating statement. A property that produces a modest net operating income at a high assessed value is internally inconsistent, and that inconsistency is the argument.
Condition is the third lever. Deferred maintenance, an aging roof, a functional-obsolescence problem such as a layout that no longer matches the neighborhood, or a flood-zone designation all bear on value — and county records frequently do not reflect them. Photographs, inspection reports and contractor bids are legitimate exhibits. So is an appraisal you already have in hand from a purchase or refinance, particularly if it is recent.
The purchase-year trap
The single most common tax surprise for a Georgia rental investor is the gap between the previous owner’s bill and the first full bill after purchase. A homestead exemption that was on the property will generally come off when the property stops being someone’s residence, and the assessed value may be revisited. The result is a number that can move in both directions and is rarely identical to the bill you were shown during diligence.
Ask for the county parcel record rather than the seller’s payment history, and look at the assessed value, the exemption status and the millage applied. Then model taxes at a level that reflects what you are paying for the property. If your coverage ratio only works at the old number, it does not work.
Should you appeal every year?
No — an appeal is a correction mechanism, not a routine. Georgia counties revisit values on their own cycle, and a property that has genuinely appreciated should expect an increase. The useful habit is to review the notice each year and compare the assessed value against current comparable sales and your own rent and expense picture. When the number is defensible, accept it. When it is not, the 45-day window is the tool.
There is also a practical consideration on the other side. A county that processes an appeal is looking closely at the parcel, and a property that has been improved since the last assessment may find the value adjusted in the other direction on a future cycle. Appraising the argument before filing — with real comparables, not with the number you would prefer — is the discipline that keeps appeals credible.
When to bring in a professional
Straightforward residential appeals are frequently handled by the owner with comparable sales and a photograph of the roof. Complex cases — commercial and small multifamily property, properties with mixed valuations, cases that escalate to the board of equalization or beyond — usually justify professional help. Georgia has a mature market of property tax consultants and attorneys, many of whom work on a contingency basis.
If you are weighing whether an appeal is worth it, the useful first question is arithmetic: what is the annual tax saving if the value is corrected, and how much of it do you keep after any professional fee? For a rental property in a high-millage county, the answer is often yes. This article is general information about Georgia’s process, not tax or legal advice — confirm your parcel’s specifics with the county and with a professional who can review the record.