What a Gwinnett County home really costs in property tax: the 2025 millage, Georgia's 40% assessment rule, and the exemptions that lower the bill. Unincorporated Gwinnett County levies total about 27.10 mills.
Gwinnett County is part of Momentum's Georgia coverage through the Georgia MLS (GAMLS), which we carry statewide. Its 2025 digest rates: county maintenance & operations 6.950 mills, schools 20.150 mills; unincorporated parcels also carry city school buford 14.500, recreation 1.000 mills. Inside a city the city's own millage applies instead of some unincorporated levies: Auburn Gwinnett 4.931, Berkeley Lake 1.194, Braselton 0.000, Buford 0.000, Cid Braselton 4.000, Cid Evermore 5.000, Cid Gwinnett Place 5.000, Cid Gwinnett Village 3.500, Cid Lilburn 5.000, Cid Sugarloaf 3.500, Dacula 4.475, Duluth 6.551, Economic Development 0.300, Grayson 1.985, Lawrenceville 3.260, Lilburn 4.430, Loganville 7.702, Mulberry 0.000, Norcross 6.249, Peachtree Corners 0.000, Rest Haven 0.000, Snellville 4.000, Sugar Hill 3.500, Suwanee 4.070. All figures are from the Georgia Department of Revenue's 2025 County Ad Valorem Tax Digest.
Georgia's homestead exemption reduces the assessed value each levy taxes. The statewide base exemption is modest, but counties and cities layer their own - senior, veteran, floating, and school-tax exemptions differ across all nine counties here. File once with the Gwinnett County Tax Commissioner by April 1 and it renews while you own and occupy the home.
Buying along the coast? Compare the other southeast Georgia counties, or see every Golden Isles neighborhood we cover.