Calculating Property Taxes

How to estimate your property tax

Brochure: Understanding Property Taxes in Colorado

Actual Value x Assessment Rate x Mills = Property Taxes

  • Actual Value is set by the County Assessor and can be found on Notices of Valuation and Tax Notices
  • Assessment Rate is set by the State Legislature:
    • 29% for non-residential property
    • 7.15% for residential property
  • Mill Levies are set by local taxing entities and limited by the TABOR Amendment. The sum of Mills that apply to a given property is used to calculate taxes. 
    Mills should be divided by 1000 in order to calculate taxes. 2022 Mill Levies will be set in late December 2022.
    • 19.703 San Juan County (all property in SJC)
    • 13.896 School District #1 (all property in SJC)
    • 10.560 Town of Silverton (property within Silverton)
    • 08.200 Durango Fire Protection District (property in S. County)
    • 00.407 SW Water Conservation District (all property in SJC)

      Sum of 2021 Mill Levies for San Juan's 3 tax districts:
    • 44.566 Property within Town of Silverton
    • 42.206 Property in South County
    • 34.006 All other property in San Juan County

Effective Property Tax Rates
Another way to express the above is with effective tax rates (assessment rate x mill levy/1000).

2021 Effective Property Tax Rates
  Residential Non-Res
Town of Silverton 0.32% 1.29%
South County 0.30% 1.22%
Remainder of County 0.24% 0.99%

2021 Property Tax Estimator

Annual Abstract of Assessment

The Abstract of Assessment is produced each January and provides information on the assessed value of property in San Juan County. The brochure also provides the tax rates and revenues for all taxing entities in the County, and the distribution of taxes by type of taxing authority. San Juan County currently has 3 tax districts and 5 taxing entities. The 2022 Brochure will be available in January 2023.

2021 Abstract Brochure


TABOR Amendment

The Taxpayer's Bill of Rights (TABOR) Amendment controls the amount of revenue that local governments and taxing entities can collect and spend. However, if an entity has “de-bruced,” some or all of the restrictions placed on the amount of revenue they can collect and spend imposed by the Tabor Amendment have been lifted. Additionally, Colorado State Statute sets a 5.5% limit on the annual percentage increase that taxing entities can increase their revenues. Some taxing entities have had this revenue restriction removed by the voters. You can get this information directly from each taxing authority or from the Department of Local Affairs, State of Colorado, at 303-864-7720.