Most local governments in the United States impose a property tax, also known as a millage rate, as a principal source of revenue. This tax may be imposed on real estate or personal property. The tax is nearly always computed as the fair market value of the property, multiplied by an assessment ratio, multiplied by a tax rate, and is generally an obligation of the owner of the property. Values are determined by local officials, and may be disputed by property owners. For the taxing authority, one advantage of the property tax over the sales tax or income tax is that the revenue always equals the tax levy, unlike the other types of taxes. The property tax typically produces the required revenue for municipalities' tax levies. One disadvantage to the taxpayer is that the tax liability is fixed, while the taxpayer's income is not.
The tax is administered by the states, with all states delegating the task to its local governments. Many states impose limits on how local jurisdictions may tax property. Because many properties are subject to tax by more than one local jurisdiction, some states provide a method by which values are made uniform among such jurisdictions.
