Colorado state website
Small business events in your area
Doing business in the state
MyBizColorado
Department of Regulatory Agencies - Business License
Office of the Secretary of State
Colorado Office of Economic Development and International Trade
Taxation
Colorado Department of Revenue
Employer links
Colorado Department of Labor and Employment - Businesses and Employers
Unemployment Insurance
New Hire Registry
General
Small Business Administration - Colorado
Colorado State Agencies
Colorado Department of Personnel & Administration
SBA.gov's business licenses and permits search tool allows you to get a listing of federal, state and local permits, licenses, and registrations you'll need to run a business.