8 Property Tax Deadlines Georgia Homeowners Can’t Afford to Miss

Do you know which state agency runs Georgia’s property tax deadlines?

It’s a trick question.

None of them do.

Every county handles its own notices, its own hearings, and its own bill, and the state only sets the outer rules everyone has to follow.

These are the Georgia property tax deadlines homeowners can’t afford to miss.

Note: This is general information, not tax advice. Property tax deadlines, rates, and dollar amounts vary by county and are subject to change, so confirm the current details with your county tax office.

1. Your 45-Day Countdown

Georgia mails an annual notice of assessment every year.

That notice is your one shot to challenge what the county says your home is worth.

You get 45 days from the date printed on the notice to file a written appeal with your county board of tax assessors.

No extensions.

Not from when you open the envelope, and not from when you spot the new number, but from the date stamped on the notice.

Miss it, and the value on that notice stands for the whole tax year, whatever it does to your bill.

A homeowner in DeKalb County who sets that letter aside for six weeks loses the fight before it starts.

2. April 1’s One Shot

Georgia’s homestead exemption knocks a chunk off what the county taxes on your primary home, but only if you apply by April 1.

One form, one date, every county in the state.

Buy a house in March and skip the paperwork, and you pay the full bill for the whole year with no proration and no partial credit.

The county doesn’t remind you twice.

Here’s the part that changed, though: A late filer isn’t automatically locked out for a full year anymore.

Georgia’s Department of Revenue now lets you apply for the same tax year through the end of your 45-day appeal window, a second chance that didn’t exist before 2025.

That’s new.

Miss both windows, and only then do you wait until the following April to try again.

3. Your Due Date Isn’t Fixed

Ask when a Georgia property tax bill is due, and the honest answer is that it depends which county mails it.

Cobb County and Fulton County both set October 15 as the payment date.

Gwinnett County pushes it to November 15.

DeKalb County splits its bill into two payments, half by September 30 and the rest by November 15.

No single date covers the whole state.

Every county picks its own.

A Cobb County bill due October 15 and a Gwinnett County bill due November 15 sit a full month apart, and nothing on either bill flags that gap.

Check the date printed on your own bill, not a neighbor’s, and not last year’s.

4. Two Clocks, One Bill

Pay a Georgia property tax bill late, and two different clocks start running, and they don’t start at the same time.

Interest begins the day after the due date, charged monthly at the bank prime rate plus 3%, and any partial month counts as a full month.

That clock starts immediately.

The penalty is slower.

Georgia law waits 120 days past the due date before it adds a first 5% penalty, then tacks on another 5% every 120 days after that.

So four months of silence on a $3,000 bill adds $150 in penalties alone, stacked on top of months of interest that never paused while you waited.

The penalty caps at 20%.

The interest doesn’t.

5. Three Hearings, One Notice

Property values across a Georgia county can jump without a single vote on the millage rate itself, and tax bills rise right along with them.

Georgia’s rollback rate rule is supposed to catch that: Each county calculates the rate that would raise the same money as last year, reassessments aside.

Set the rate above that number, and state law treats it as a tax increase even when the millage figure on paper looks unchanged from last year.

That triggers three public hearings, and Georgia law requires one evening hearing among them, held between 6 and 7 p.m. so working homeowners can attend.

Each hearing gets a newspaper notice exactly one week ahead of time.

Then it’s over.

Blink, and all three hearings can pass before you’ve even seen the ad.

Homeowners in Savannah or Macon who want a say in that increase have to catch the notice, not just the tax bill that follows it.

6. Thirty Days After the Ruling

File your 45-day appeal, and a county board of equalization schedules a hearing, usually within a few months.

Lose there, and the fight isn’t over.

Georgia law gives you 30 days from the board’s decision to take the dispute to superior court.

Not final yet.

Most homeowners never use this stage, but homeowners with a genuine case lose it the moment they treat the board’s ruling as the final word.

It isn’t, not for another month.

7. Three Years of Locked-In Value

A win in a Georgia property tax appeal outlasts that single tax year.

The reduced value locks in for the current year plus two more, three years total, unless you add a new garage or a pool that changes the property.

That adds up fast.

A homeowner in Athens who successfully appeals a $350,000 assessment down to $310,000 keeps that $310,000 figure through two more tax cycles, even while home values around them keep rising.

Skip the 45-day window in year one, and there’s no freeze to skip into later.

8. Your County Line Decides

Georgia voters approved a statewide floating homestead exemption in 2024, an exemption built to cap how fast a home’s taxable value can rise no matter what the market does.

Every local government got a single chance to opt out, and the window closed March 1, 2025.

That deadline already came and went, and it split the state.

Fulton, Cobb, Gwinnett, DeKalb, and Chatham counties all opted their school systems out, along with roughly 47 counties statewide.

Newton County stayed in.