Tax Issues

Adams County Treasurer

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

City of Thornton

Sales and Use Tax
303-538-7400
Total City Sales Tax Charged = 8.50%
[3.75% (City); 0.75% (County); 2.9% (State); 1.1% (RTD)]
Thornton Sales & Use Tax

Colorado Department of Revenue

Tax Line: 303-205-8411
www.colorado.gov/pacific/tax

Internal Revenue Service

1-800-829-1040
www.irs.gov

Tax Forms/IRS

1-800-829-1040
www.irs.gov/forms-pubs