What Is the Difference Between an Assessment and Property Tax in Nassau County?

A property assessment and a property tax bill are related, but they are not the same thing.

The Nassau County Department of Assessment establishes values for land and improvements. The assessed value becomes part of the process used to determine taxable value.

The final property tax bill also depends on tax rates, exemptions and the taxing districts that apply to the property. Therefore, lowering an assessment does not necessarily mean the total tax bill will fall by exactly the same percentage.

Homeowners should review both the assessment record and the actual tax bill. Looking at only one number may not explain the property's complete tax situation.

AIDOTAX focuses on assessment review and appeal preparation. It helps homeowners examine the assessment, organize comparable properties and prepare supporting materials.