TAX & LICENSE / STATE TAX SYSTEM

State Income Tax
Colorado applies a flat tax rate of 4.63 to taxable income. Variables that affect taxable income include filing status, exclusions, and credits. Some these allowable credits include taxes paid to other states, earned income credit, and a child care or child tax credit. If you have questions, require forms, or need help with a problem, contact the Taxpayer Service Division:

Colorado State Department of Revenue
Taxpayer Service Division
General Information
303-238-7378
www.colorado.gov/revenue

Mail Forms to:
Colorado Department of Revenue
PO Box 17087
Denver, CO  80217-0087

Colorado Sales Tax
Colorado imposes a sales/use tax of 2.9 percent, although many cities and counties as well as special taxing districts add local sales and use taxes on purchases and transactions. All county sales taxes are state collected. Most goods are subject to sales tax and most services are not taxed as long as the billing separates the two. The combined state and local sales tax rate varies from 3.7 to 7.2 percent depending upon the locality. Use taxes are due to the state by individuals who have purchased merchandise outside of Colorado such as Internet or catalog orders when sales tax has not been paid but the items will be “used” in Colorado. For complete details on sales and use taxes, contact:

Colorado State Department of Revenue
Taxpayer Service Division
303-238-7378
www.colorado.gov/revenue

Property Taxes
Property taxes are administered at the county level, supervised by the Colorado Department of Local Affairs, Division of Property Taxation. For questions about property tax rates, valuation, or tax collection, contact the state office or your county assessor:

Colorado Division of Local Affairs
Division of Property Taxation
303-864-7777
www.colorado.gov/dola/property-taxation

County Assessors

Adams County
720-523-6023
www.adcogov.org/assessor

Boulder County
303-441-3530
www.bouldercounty.org/government/elected-officials/assessor

Broomfield City/County
303-464-5819
www.broomfield.org/164/Assessor

Jefferson County
303-271-8600
www.jeffco.us/658/Assessor

Larimer County
970-498-7050
www.larimer.org/assessor

Weld County
970-400-3650
www.weldgov.com/departments/assessor

County Treasurers

Adams County
720-523-6160
www.adcogov.org/treasurer

Boulder County
303-441-3520
www.bouldercounty.org/property-and-land/treasurer

Broomfield City/County
303-438-6390
www.broomfield.org/375/Treasurer

Jefferson County
303-271-8330
www.jeffco.us/809/Treasurer

Larimer County
970-498-7020
www.larimer.org/treasurer

Weld County
970-400-3290
720-652-4200
www.weldgov.com/departments/treasurer

Federal Income Tax

Internal Revenue Service
Information
800-829-1040
www.irs.gov