New employers start paying UI premiums at an introductory rate depending on the type of business activity. For rate year 2025, the rate consists of the beginning rate, the support rate and the solvency surcharge rate.
New employers in construction-related industries may be subject to a different beginning rate. If solvency surcharges are in effect, those surcharges are the same. Contact UI Employer Services for more information on beginning rates for employers in construction-related industries.
Introductory Rates for 2025
| Business Classification | Beginning Rate | Support Rate | Surcharge Rate | Combined Rate |
| Non-construction | 0.0153 | .0017 | .0135 | 0.0305 |
| General Construction | 0.0156 | .0017 | .0135 | 0.0308 |
| Heavy Construction | 0.0538 | .0060 | .01625 | 0.07605 |
| Trades | 0.0156 | .0017 | .0135 | 0.0308 |
| Political Subdivision Group Rate | 0.0020 | 0 | 0.0020 |
Introductory Rates for 2024
| Business Classification | Beginning Rate | Support Rate | Surcharge Rate | Combined Rate |
| Non-construction | 0.0153 | .0017 | .0135 | 0.0305 |
| General Construction | 0.0156 | .0017 | .0135 | 0.0308 |
| Heavy Construction | 0.0570 | .0063 | .01725 | 0.08055 |
| Trades | 0.0156 | .0017 | .0135 | 0.0308 |
| Political Subdivision Group Rate | 0.0020 | 0 | 0.0020 |
Contact Unemployment Employer Services
303-318-9100 (Denver-metro area)
1-800-480-8299 (outside Denver-metro area)
UI Employer Services
P.O. Box 8789
Denver, CO 80201-8789