A lower value cuts your tax only on the bill lines where taxable value falls. How to read each line when you have a Georgia homestead exemption.
# Homestead Exemption: What Georgia Property Tax Appeals Save
If you have a Georgia homestead exemption, a property tax appeal that lowers your value cuts your tax only on the lines of your bill where your taxable value actually falls. By our reading of the law, a line that carries a floating (base-year) homestead exemption can turn a value cut into a smaller exemption instead of a smaller tax, while a line without one, such as a bond levy, takes the whole cut.
Your bill has a line for each body that taxes your home (county, school district, city, fire district), and each line can carry its own exemptions. Georgia assesses most property at 40% of its fair market value, and that 40% figure, less any exemptions, is what your tax rate is applied to (O.C.G.A. 48-5-7(a); see how Georgia's 40% assessment ratio works).
Newton County's tax commissioner describes the math this way: "first deduct any exemptions that may apply from the assessed value, which generates a net assessed (taxable) value. Then, multiply the net assessed value by the millage rate." A mill is $1 of tax per $1,000 of assessed value. Your tax commissioner bills and collects the tax, and each levying body sets its own millage rate.
On each line, look for:
To spot a floating exemption, compare each line's exemption with the fixed-dollar exemptions your county lists. Newton County's standard homestead exemption, for example, "Reduces the taxable value by $4,000 on the county and school levies." A line whose exemption is bigger than those, and has grown as your value rose, likely carries a base-year exemption; your tax commissioner can explain its code.
If your lender pays from escrow, the bill still carries these lines (how escrow handles property taxes).
Because the statewide exemption is measured from your current value. Georgia's statewide base-year homestead exemption, created by HB 581 (O.C.G.A. 48-5-44.2), equals "the amount by which the current year assessed value of that homestead, including any final determination of value on appeal pursuant to Code Section 48-5-311, exceeds its previous adjusted base year assessed value," in the words of the act as signed. Apart from additions or improvements (a "substantial property change" in the law's words), the adjusted base can rise each year by no more than the prior year's inflation rate (2.7% for 2026, the Department of Revenue says).
As we read that text, on a line that carries the exemption, your taxable value sits at the adjusted base whenever your current value is above it. A cut that leaves your value above the base only shrinks the exemption, so that line's tax doesn't move; a cut that takes it below the base drops the exemption to zero, and the part below comes off. In bill terms, only the part of the assessed cut larger than that line's floating exemption lowers its tax. ACCG makes a related point: of two homes with the same base, the one "with the higher fair market value will receive the larger exemption while potentially paying the same in property taxes." Ask your county's board of assessors how they'll apply a lower value to your exemption.
Where a line has more than one base-year exemption, Gwinnett County's tax commissioner says owners "will receive the one with the most savings." Local floating exemptions follow their own local laws, which vary: Cherokee County said in 2025 that its own covered the county's maintenance and operations millage, while the statewide one "will be applied to the Fire District millage rate." Ask your assessors how a lower value affects such a line. Fixed-dollar exemptions come off after the floating one, ACCG says, and they lower a line's taxable value by the same amount before and after an appeal, so they don't change what a cut does.
Two kinds of lines take a value cut at their full millage, unless another exemption covers them:
So for 2026, a line from a government that opted out and didn't rescind most likely carries no statewide base-year exemption; check which exemptions your 2026 bill lists on that line. See also whether Georgia's HB 581 tax cap applies to your home.
The statewide exemption applies only to a homestead, the owner's primary residence, so a rental's or a second home's value changes reach its bill without that exemption.
On an illustrative Newton County home, a $40,000 cut in value lowers the school line by $244.00 and, by our reading of the law, may leave the county and fire lines unchanged. It rests on three assumptions:
For an illustrative home with a fair market value of $400,000 (the card below shows the school line):
Illustrative only. On a line with no base-year exemption, the whole assessed cut meets the full millage; this assumes the school board's opt-out still applies for 2026. Use the rates and exemptions on your own bill.
With no base-year exemption on any line, the same $16,000 would meet all 24.709 mills, or $395.34; in the first case, only the school line's $244.00 of that reaches the bill. Newton's $4,000 standard exemption is left out, since it doesn't change what a cut does; the comparison below lines up each line.
Illustrative. The county and fire rows are our reading of the statewide exemption's text, and the school row assumes the school board's opt-out still applies for 2026. Check your own bill.
Use your own bill's millage and exemptions.
If the value is reduced on appeal, the lower value holds for the appeal year and the next two, subject to the statutory exceptions; that's the hold often called Georgia's 3-year freeze. A 2026 appeal may also lower the base for an exemption that starts in 2027.
The hold applies when a Board of Equalization, hearing officer, arbitrator or court decision, or a written agreement signed by the assessors and you or your authorized agent, lowers the value: the assessors then can't raise it for the next two years (O.C.G.A. 48-5-299(c)). A no-change result, whether from the assessors or the Board, starts no hold. The 2025 change in Georgia's 299(c) hold covers the exceptions.
As amended by SB 33, the law sets the base year value as the assessed value, "including any final determination of value on appeal," from the year before the exemption is first granted, and the Georgia Municipal Association says that for governments that had opted out, that base year is 2026. Read together, a 2026 appeal that lowers your value would also lower the base those governments' exemption builds on. That's our reading of the sources, so ask your county's board of assessors how they'll set your 2027 base.
Georgia law sets the appeal window at 45 days from the date your assessment notice was mailed, not from your tax bill. If your 2026 window has closed, your next chance is your 2027 notice, and the 2027-base benefit needs a 2026 appeal result. Confirm with your county before you file.
Add up the lines where your taxable value would fall, not the value cut itself, because a floating exemption can make your first-year tax savings small, or nothing at all, even when the value is reduced and held.
If you'd rather not track the county's letters and deadlines yourself, AppealAlly's Full-Service Appeal files your appeal and tracks them for you. The fee is 30% of your first-year tax savings, charged only if we win, plus a one-time $25 fee if the county grants Georgia's 3-year freeze, and it can be more than your first-year savings. If your actual first-year savings turn out lower than our estimate, send us your tax bill and we'll refund the difference.
You do. AppealAlly handles property tax appeals only, not exemption applications, so you file your homestead exemption application yourself with your county's tax commissioner or tax receiver, or in some counties the tax assessor's office (Newton's tax commissioner points in-person applicants there). Our Georgia homestead exemption guide explains who qualifies and how to apply.
The Department of Revenue's homestead exemption page says you can apply any time up to the deadline for filing property tax returns, April 1, the date Georgia law sets. Georgia law sets a later window too: since SB 566, you may also apply up to the end of your 45-day window to appeal your assessment notice, counted from the date the notice was mailed. Confirm with your county before you file.
This article is general information from public sources: HB 581 and SB 33 as signed, O.C.G.A. 48-5-7 and 48-5-299, the Georgia Department of Revenue, ACCG, the Georgia Municipal Association, and Newton, Athens-Clarke, Gwinnett and Cherokee county pages, read on September 29, 2026. The worked example is illustrative, dates that depend on your county are estimated, and county practice varies. It isn't legal or tax advice. Check your own millage, exemptions and dates on your notice and tax bill, or with your county's board of assessors or tax commissioner.