The Department of Tax Administration's (DTA) Real Estate Division is tasked with collecting data for all real property in Fairfax County. DTA uses that data to annually assess real property in a fair and uniform manner at estimated fair market value as of January 1 of each year. The tax rate, set by the Board of Supervisors, is applied to that value to determine the tax amount due. Real estate taxes are paid annually in two installments due July 28 and December 5.
2025 Property Tax Assessment Informational Flyer (included with Notice of Assessment Change):
The Department of Tax Administration (DTA) reviews the assessed values for all real property each year with January 1 as the effective date. In accordance with the Virginia Constitution, real estate is assessed in a uniform manner and at fair market value.
The Board of Supervisors sets the general tax rate that applies to all real property in the county. Your tax bill might include other taxes related to special taxing districts and/or service fees.
If you believe that your property is incorrectly assessed, you can file an appeal with the department or the Board of Equalization. Appeals may also be filed for properties that have been damaged, destroyed, or impaired by violence.
The Code of Virginia exempts some property from taxation by classification and designation, such as property of churches and non-profit charities.
Additionally, your tax burden may be reduced if you meet certain qualifications. There are exemptions for:
Mobile homes are assessed and taxed through the Vehicle Tax. More information can be found on the Vehicle Tax page.
Here are some frequently asked questions relating to real estate taxes in Fairfax County.