Gwinnett County property tax calculator 2026
This calculator provides an estimated property tax for Gwinnett County, Georgia based on assessed value and a combined local property tax rate. Gwinnett County uses a uniform assessment ratio, while tax rates vary by location and taxing authorities.
Estimates only. Results may differ from official tax bills, pay stubs, or filed returns.
Many U.S. counties use multiple local taxing authorities (county, city, school district, special districts). Enter your combined local millage rate as shown on your annual property tax notice.
Estimated property tax
See our research on states with the highest property taxes
Enter the market value to see the estimated annual property tax.
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How it works
Property in Gwinnett County is valued at fair market value and assessed at a fixed percentage to determine assessed value. The taxable value is calculated from the assessed value, after which a combined local property tax rate is applied. That combined rate reflects levies set by the county, the school system, and, where applicable, a city government.
Examples
If a property has a given market value, the assessed value is calculated using the county assessment ratio. An estimated combined local rate is then applied to produce an annual property tax estimate. Actual rates differ depending on whether the property is in unincorporated Gwinnett County or within a specific municipality.
Limitations and important notes
This estimator reflects a simplified calculation based on the taxable value and rate entered. Millage rates vary by city, district, and voter-approved levies, and exemptions depend on eligibility and application status. The actual tax bill may differ from this estimate.
FAQs
How is property tax calculated in Gwinnett County?
Property tax is calculated by applying a combined local millage rate to the taxable assessed value of the property.
What assessment ratio is used in Gwinnett County?
Gwinnett County assesses property at a fixed percentage of its fair market value for tax purposes.
Do property tax rates vary within the county?
Yes. Rates vary depending on whether the property is in unincorporated Gwinnett County or within a city, and which local levies apply.
Are exemptions included in this calculator?
Exemptions are not automatically applied because eligibility and amounts vary by owner and taxing authority.
Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.