Connecticut Business Entity Name Reservation & Naming Requirements Guide

Connecticut (CT) State ShapeIn this article, we’ve described step by step instructions involved to file for business name reservation in Connecticut. We’ll also be discussing in-depth about the business naming rules and requirements.

Typically name reservation is done to protect the business name from being registered by someone, till the time business is officially formed.

The business name can be reserved for the period of 120 days and which can be further renewed. The reservation can also be transferred to any third party during the holding period.

To file for business name reservation the first step is to determine whether the chosen business name is unique or not and does it meet the state’s requirement.

Connecticut Business Entity Naming Requirement for LLCs and Corporations

Connecticut Secretary of State has mandated certain naming rules which you must keep in mind while choosing a business name.

The business name must be unique and distinguishable from any existing business entity name registered with the state. 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 the words“Limited Liability Company”, “L.L.C.”, “LLC”, “Limited”, “Ltd.”, “Company”, “Co.” or any similar abbreviation.
Corporation Naming requirements
Must end with the words “Corporation”, “Company”, “Incorporated”, “Limited”, “Societa per Azioni” or any similar abbreviation.
Prohibited Words

Certain words such as bank, insurance,  trust etc cannot be included in the name without prior approval from the concerned authorities.

How to Check for Business Name Availability in Connecticut

The business name you choose must be unique and not similar to any existing business name. 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 Connecticut.

How to File for Business Name Reservation in Connecticut

Business name reservation can be filed over mail. The process can take upto 2 weeks.

By Mail

Download FormLink
AddressCommercial Recording Division,
Connecticut Secretary Of The State,
30 Trinity Street,
Hartford, CT 06106
Processing TimeAround 2 weeks after the receipt
  1. Download the name reservation form (Link above).
  2. Fill the form with the requested details.
  3. Include the money order or check drawn in favor of “Secretary of State.
  4. Send the filled form to:
    Commercial Recording Division,
    Connecticut Secretary Of The State,
    30 Trinity Street,
    Hartford, CT 06106


For any queries, you can contact the SOS at (860) 509-6200 during business hours.



Last fact-checked on 15/01/2018

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