Start your Colorado Tax ID (EIN) Application

Welcome to the Online Assistant to Apply for a Colorado Tax ID (EIN) Number. If you are ready to begin the application for a Colorado Tax Identification Number, select the entity that corresponds to your business type or the legal structure of your entity. Once your application has been submitted choose the delivery timeframe you desire and your Colorado Tax ID (EIN) will be delivered to you within that timeframe via e-mail.

What is a Colorado Tax ID (EIN)?

A Colorado Federal Tax ID Number which is also known as an Employer ID Number (EIN) or Federal Tax Identification Number is a unique, nine-digit ID assigned by the Internal Revenue Service for tax purposes for businesses as well as Non-Profit organizations, Trusts and Estates. The Tax ID or EIN serves as a way to easily identify the entity similar to how a Social Security Number is used to uniquely identify individuals.

Who Needs a Colorado Tax ID (EIN)?

A Colorado Tax ID (EIN) Number is needed for most businesses and organizations. If your business or organization fits any of the below characteristics you will need a Colorado Tax ID (EIN):

  • Have W-9 Employees in Colorado
  • Operate a Colorado Corporation or Partnership
  • Operate as Trust, Estate or Non-Profit Organization
  • File Tax Returns for Employment, Excise or Alcohol, Tabacco and Firearms
  • Open a Colorado Business Bank Account

Information Needed to Complete Application

To complete the online application for a Colorado Tax ID (EIN) the following information will be required:

  • Full Legal Name as is or will be registered in Colorado
  • The Responsible Party’s legal name (an individual who will be responsible for communication regarding tax matters) and their Social Security Number
  • Contact Email and Phone Number of the Responsible Party
  • Physical Address of the business or organization