Alpharetta's city tax rate is 5.75 mills for 2026 and city bills are due Dec. 1. Appeal a Fulton County value within 45 days: 404-612-6440.
Last checked 2026-10-03. Sources: the City of Alpharetta property tax page, the Fulton County Board of Assessors and the Fulton County Tax Commissioner.
An Alpharetta homeowner pays property tax to three bodies: the city of Alpharetta, Fulton County and Fulton County Schools. Each sets its own rate. The city bills and collects its own share separately; the Fulton County Tax Commissioner bills the county and school shares. That means two bills, with two due dates.
Who to call
- City of Alpharetta tax bill: city customer service, 678-297-6060 (option 0); pay online
- County and school tax bill: Fulton County Tax Commissioner, 404-613-6100, 141 Pryor St. SW, Atlanta
- Your property’s value, appeals, county homestead exemptions: Fulton County Board of Assessors, 404-612-6440
- City senior homestead exemption: City of Alpharetta Finance Department, 2 Park Plaza, 678-297-6060
The city’s rate for 2026
The city’s total millage rate for the 2026 tax year (its fiscal 2027) is 5.750 mills, unchanged from last year, according to the city’s property tax page. The millage ordinance had its second reading at the City Council’s June 15 meeting. The city says it has held the rate since 2009. The two parts:
| City levy | Mills | What it pays for |
|---|---|---|
| Maintenance and operations | 5.050 | City services, public safety, daily operations |
| Bond levy | 0.700 | Voter-approved general obligation bonds for parks, roads and trails |
| Total | 5.750 |
A mill is $1 of tax for every $1,000 of assessed value. In Georgia, assessed value is 40% of the fair market value the county assessors put on your property. Because reassessments raised values, the city had to advertise the unchanged maintenance and operations rate as a 6.50% tax increase over the rollback rate, and it held three public hearings in June, the city said in its millage rate notice.
The city says it keeps 18 cents of every $1 an Alpharetta owner pays in property tax. The other 82 cents goes to Fulton County Schools and Fulton County.
The county’s rate
The Fulton County Board of Commissioners announced Sept. 23 that it intends to set its 2026 General Fund levy 0.54% above the rollback rate. Georgia law requires three public hearings before that rate is final. Two were held Sept. 30. The last is at 10 a.m. Wednesday, Oct. 7, in the Government Center Assembly Hall, 141 Pryor St., Atlanta, with a Zoom option listed in the county’s notice.
When taxes are due
- City of Alpharetta: bills are mailed on or before Oct. 1, and current-year taxes are due Dec. 1. Prior-year taxes are due immediately. Not receiving a bill does not move the deadline, the city says. Check your account or pay through the city’s online portal.
- Fulton County and school taxes: the due date is printed on the bill from the Tax Commissioner. Look up or pay a bill by parcel ID, account number or address with the Tax Commissioner’s bill search.
If a mortgage company pays your taxes from escrow, the city asks you to forward a copy of the bill to it.
Homestead exemptions
You must own the home and live in it as your main residence on Jan. 1. Applications are accepted all year; those filed by April 1 count for the current year. Once granted, an exemption renews automatically while you own and live in the home, the county says.
City of Alpharetta exemptions, from the city’s homestead exemptions page:
| Exemption | Who qualifies | What it does |
|---|---|---|
| Floating homestead | Any homesteaded owner, applied automatically | Caps growth in taxable value at 3% or inflation, whichever is lower (not on the bond levy) |
| Basic homestead | Owner-occupant | $45,000 off assessed value (not on the bond levy) |
| Senior basic | 65 or older on Jan. 1 | $25,000 off assessed value, whole levy |
| Senior full value | 70 or older on Jan. 1, income limit | Full exemption from the city levy; 2026 income limit $99,648 for applicant and spouse |
File the basic homestead and county senior exemptions with the Fulton County Board of Assessors, including in person at 11575 Maxwell Road in Alpharetta. File the city senior exemptions with the city Finance Department at City Hall. The county publishes its own options, including low-income and surviving-spouse exemptions, in its homestead exemption guide.
For 2026 only, the state’s Homeowner Tax Relief Grant, authorized by House Bill 973, cuts the assessed value of homesteaded property by up to $18,000. The city says it will apply the grant on top of its own exemptions.
How to appeal your value
The Fulton County Board of Assessors mails a notice of assessment every year. You can appeal the value, not the tax amount, and you have 45 days from the date of the notice. The exact deadline is printed on the notice; miss it and you lose the right to appeal that year.
- File online at fultonassessor.org, in person at a Board of Assessors office, or by mail.
- Pick one route: a hearing before the Board of Equalization, non-binding arbitration on value, or a hearing officer. Fees can apply to arbitration and hearing officers.
- Expect the process to take months. You will likely get a temporary tax bill in the meantime, and you must pay it by the due date to avoid penalties, the city and county say. The city adjusts its bill once the county sends the final value.
What this means for you
- Mark Dec. 1 for the city bill and check the county bill for its own date.
- Not homesteaded yet? Apply now; filing by April 1, 2027, counts for 2027.
- Watch for your assessment notice next year and note the 45-day appeal window.
- Want a say on the county rate? The last hearing is 10 a.m. Wednesday at 141 Pryor St.
Related: Alpharetta home prices and who to call at City Hall.