Colorado Business Entity Name Reservation & Naming Requirements Guide

Are looking for instructions on how to reserve a business name in Colorado? If yes, then you have come to the right place.

On this page, we have provided step by step instructions on how to file for business name reservation and we’ve also covered in-depth about the business naming requirements.

Typically name reservation is done to protect the business name from being registered by someone else, till the time business is officially formed. The business name can be reserved for the period of 120 days and it is transferable.

To file for business name reservation the first step is to determine whether the business name you’ve chosen is unique or not. Also, there are certain naming requirements that must be kept in mind while choosing the name.

Colorado Business Entity Naming Requirement for LLCs and Corporations

Colorado Secretary of State has mandated certain requirements which you must keep in mind while selecting a business name.

The business name must be unique and distinguishable from any existing business entity name registered with the SOS. Also any difference in grammar, similarly sounding business name, or using stop words does not make the business name unique and it will lead to the name being rejected.

For example, the following names are not distinguishable:

  • Justin Plumber LLC vs The Justin Plumber LLC
  • Mango Farm LLC vs Mango Farms LLC
  • Jake & Mary Corporation vs Jake and Mary Corporation

Required suffix in the business name:

LLC Naming requirements
Must  end with either “Limited Liability Company”, “Ltd. Liability Company”, “Limited Liability Co.”, “Ltd.”, “Liability Co.”, “Limited”, “L.L.C.”, “LLC”, “Ltd.” or an abbreviation of the mentioned words.
Corporation Naming requirements
Must end with either “Corporation”, “Incorporated”, “Company”, “Limited” or an abbreviation of one of such words.
Prohibited Words
  • Words such as bank, insurance or trust need special permission from the concerned authorities.

How to Check for Business Name Availability in Colorado

The name you choose for your business must be unique and not similar to any existing business name in the state. You can conduct a simple business entity search on the SOS website to verify it. We have written an in-depth tutorial on how to search for a business name in Colorado.

How to File for Business Name Reservation in Colorado

Business name reservation can be filed online. And you can instantly reserve the business name.


  • Navigate to Alaska business name reservation page – Link.
  • On the next page, enter the business name you are looking to reserve.
  • Fill up the business address and owner(s) detail.
  • Click on ‘Proceed‘ button and make the payment of $25.


For any queries, you can contact the SOS at 1-303-894-2200 during business hours.


Last Updated: 15/01/2018

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