Registering a Business Name


In Ireland, the dedicated authority for registering a business name is the Companies Registration Office.

Registration of a business name is obligatory if any individual, partnership or any body corporate carries on business under a name other than their own true names. Its purpose is to make public the identities of those individual(s), partnerships or corporate bodies being the legal entity behind the business name.

To register a business name online you will need to complete the following:

Step 1 - Registration
To register a business name online you first need to register with CORE the Companies Online Registration Environment. This is a simple process. Log onto

On the right hand side of the web page, click on CORE REGISTRATION FORM.

Step 2 - Completing the form
Click on "File a Form".

Select "Register a Business Name and then select - Individual" from the workspace.

Follow the instructions, making sure you read all pop-up messages carefully. For a partnership choose Register a Business Name - Partnership, for a business name owned by a company choose Register a Business Name - Body Corporate.

Step 3 - Enter the business name details
Give the business name you intend to trade under. When entering the email address, please note that this is the address the digital certificate of registration will issue to.

Click Find to search for the NACE classification for your business.

The place of business address must be in the Republic of Ireland. Enter at least the first 2 lines of the address and click Validate address. The address will be validated against an Post's geo-directory.

Step 4 - Enter the details of the person who owns the business name.
Enter the individual details of the business name owner. If you are a non EU national, you will need to enter your Garda National Immigration Bureau number.

Step 5 - Presenter Details
The details of the Presenter will be pre-filled with the details that were entered on registration with CORE.

You will be presented with an overview of the details you have entered for review.

Step 6 - Print & sign signature page
Once the Submit button is clicked, a signature page will be generated, which you will have to print and sign. The signature page should be sent to the CRO for registration along with any other necessary documentation. A filing fee of €20 is required.

Please remember that when the application is made online, the signature page (and fee if necessary) still need to be submitted to the CRO for registration. The certificate cannot be created without the submission of this signed document.

Your Workspace
The registration page and the document are available in your workspace for future reference. A copy of the signature page can be printed from here if you had any difficulty through the earlier process.
If the document is returned to you for any reason, you will be able to edit it in your workspace by clicking on the edit & resubmit icon. You will need to generate a new signature page if you make changes to the form. The document is only deemed legally received in the CRO when the signature page and fee are received.

Registering a business name by post

To register a business name by post, the following forms must be submitted, along with the registration fee to the Companies Registration Office within one month of adopting the business name:

Documents to be submitted:

  • Form RBN1: for an individual
  • Form RBN1A: for a partnership
  • Form RBN1B: for a company


When submitting a registration by post the applicable fee is €40.

It normally takes three weeks from the receipt of the paper form in the CRO for the registration of a business name and the issue of the certificate.

More information on registering a business name and the relevant forms is available in the link below on the Companies Registration Office website.
Registering a business name