Ireland CRO Company Number Validator
Validate Irish Companies Registration Office (CRO) company numbers online for corporate compliance.
About Ireland's Companies Registration Office (CRO)
The Companies Registration Office (CRO) is the central statutory registry for Irish business entities, private limited companies (LTD), public limited companies (PLC), and designated activity companies (DAC).
The CRO company number is required for VAT registration with Revenue Commissioners and annual return (B1) statutory filings.
Anatomia of the Irish CRO Company Number
Structure of the corporate registration number issued by the Companies Registration Office in Ireland:
| Position | Field | Length | Official Significance | Example |
|---|---|---|---|---|
| Prefix (Optional) | Agency Prefix | 3 letters | Identifier prefix representing the Companies Registration Office. | CRO |
| 1 to 6 | Company Sequential Number | Up to 6 digits | Perpetual corporate identification number assigned upon incorporation. | 634567 |
Registration Standards (Companies Act 2014)
Statutory rules governing corporate registration in Ireland:
Sequential Integer (1 ≤ N ≤ 999999) standardized to 6 digits with leading zeros.
- 1. Assignment: Unique sequential corporate number issued upon certificate of incorporation.
- 2. Standardization: Formatted as 6 digits with leading zeros padded for numbers < 100,000.
- 3. Permanence: The number remains unchanged throughout the legal lifespan of the company, regardless of name or director changes.
- 4. BRIS Interconnection: Linked to the European Business Registers Interconnection System.
Frequently Asked Questions (FAQ)
What is the difference between a CRO company number and a VAT number in Ireland?
The CRO company number establishes the legal entity with the business registry, whereas the VAT number is issued by Revenue for tax compliance purposes.
How can I check the official status of an Irish company?
You can inspect public records, director filings, and financial submissions on the official CORE CRO portal (core.cro.ie).