City: To register for licenses, city taxes, file returns and manage tax accounts, visit fcgov.com/salestax
State: For state taxes and a Sales Tax ID number, visit mybiz.colorado.gov to register your business and file with the state
Federal: All forms of structure, except sole proprietors with no employees, must obtain a Federal Employer Identification Number (FEIN), which is also your federal tax ID number. Visit the Internal Revenue Service.
Determine if you need additional permits or licenses with our Business Licenses & Permits FAQs:
