To add or remove a director of an Irish company, you must file a Form B10 with the Companies Registration Office (CRO). Electronic filing through CORE is free. Here is the complete step-by-step process.
What Is Form B10?
Form B10 is the CRO form used to notify changes in company directors and secretaries. It covers appointments, resignations, and changes to a director's personal details (name, address, nationality, occupation). It must be filed within 14 days of the change taking effect.
When to File a B10
- Appointing a new director — within 14 days of the appointment date
- Director resigning — within 14 days of the resignation date
- Changing company secretary — same 14-day rule
- Updating a director's details — name change, new address, etc.
Minimum Director Requirements
Under the Companies Act 2014:
- LTD (private limited): Minimum 1 director (if a company secretary is also appointed) or 2 directors
- DAC: Minimum 2 directors
- PLC: Minimum 2 directors
- At least 1 director must be resident in an EEA country (EU + Norway, Iceland, Liechtenstein), or the company must hold a Section 137 bond
Step-by-Step: Filing a B10 on CORE
- Log in to core.cro.ie
- Select your company
- Choose "Form B10 — Change of Director/Secretary"
- Enter the type of change: appointment, cessation, or amendment
- For new directors, provide: full name, date of birth, nationality, residential address, business occupation, date of appointment
- For resignations, enter the director's name and the date of cessation
- Submit the form: electronic Form B10 filing is free
- Submit — processing typically takes 5–10 business days
What Information Becomes Public?
Once the B10 is processed, the following becomes visible on the CRO register and on Businesses.ie:
- Director's full name
- Date of appointment
- Date of resignation (if applicable)
- Nationality and occupation
A director's residential address is recorded by the CRO but is not publicly displayed on the register (since 2023). A contact address may be shown instead.
Common Mistakes
- Filing more than 14 days after the change — the CRO can refuse late filings
- Removing all directors — you cannot file a B10 that leaves the company with zero directors
- Forgetting the EEA residency requirement — at least one director must be EEA-resident or a bond must be in place
- Not updating the company secretary — the secretary is also notified via B10
How to Look Up Current Directors
Search any Irish company on Businesses.ie to see current and past directors, including appointment and resignation dates. Use the director search tool to find all companies linked to a specific person.
Summary
File a B10 within 14 days of any director or secretary change. Electronic filing through CORE is free. At least one director must be EEA-resident. New director details (name, appointment date, nationality) become public on the CRO register. A company must always have at least one director.