Colorado Business Filing Deadlines & Ongoing Requirements

Colorado ongoing requirements

File Periodic Report (LLCs, corporations and nonprofits): From 2 months before to 2 months after the periodic report month; fee $25.
State tax returns and payments (sales, withholding, unemployment) follow the schedule your agency assigns when you register.

Register for state taxes with Colorado Department of Revenue. Official page
Business-level tax: Corporate income tax.
Sales tax: get a Colorado sales tax license from Colorado Department of Revenue before you sell taxable goods. Official page
Remote sellers must register once sales into the state pass $100,000 a year.
Local sales taxes are administered by each locality, with separate filings.
If you have employees, withhold Colorado income tax from wages and register for withholding. Official page

Register for unemployment insurance with Colorado Department of Labor and Employment. The 2026 taxable wage base is $30,600 per employee; experience-rated rates run from 0.56% to 7.34%. Official page
New employers start at 1.53%.
Workers' compensation through Colorado Division of Workers' Compensation and private insurers. Required when: 1 employee
Colorado FAMLI premiums (Colorado FAMLI Division (CDLE)). Applies from 1 employee.
Paid sick leave is required statewide from 1 employee.
Post the required labor notices at your workplace. Official page

Business filings and annual reports: Colorado Secretary of State. Official page
Taxes: Colorado Department of Revenue. Official page
Unemployment insurance and labor rules: Colorado Department of Labor and Employment. Official page
Workers' compensation: Colorado Division of Workers' Compensation.
Real estate licensing: Colorado Division of Real Estate.
Alcohol licensing: Colorado Liquor Enforcement Division.
Child care licensing: Colorado Department of Early Childhood.
Health facility licensing: Colorado Department of Public Health and Environment.

Local sales tax licenses / business license (City or county): Home-rule cities (Denver, Aurora, Colorado Springs, etc.) self-collect sales tax and require their own licenses.
Cannabis: adult-use licensing, regulated by Colorado Marijuana Enforcement Division (Department of Revenue).

Checked against official sources on October 13, 2026. Rules change; confirm each item with its agency.

Choose a city to see its full list.