One of the most common questions asked in Irish legal practice is: “Do I need a Commissioner for Oaths or a Notary Public?” The answer depends entirely on where your document will be used. This definitive guide explains both roles, their powers, their limitations, and how to determine which one you need.
Two Distinct Legal Roles
Although both a Commissioner for Oaths and a Notary Public can administer oaths and witness signatures, they are fundamentally different appointments with very different scopes of authority.
Commissioner for Oaths
- Legal basis: Commissioners for Oaths Act 1889
- Appointment: Automatic for all practising solicitors; others by application to the Chief Justice
- Scope: Domestic Irish legal system only
- Recognition: Irish courts, government departments, and institutions
- Record-keeping: No requirement to maintain a permanent protocol
Notary Public
- Legal basis: Public Notaries (Ireland) Act 1821; common law tradition
- Appointment: Separate petition to the Chief Justice; requires Diploma in Notarial Law and Practice
- Scope: International — recognised worldwide
- Recognition: Foreign governments, courts, embassies, and international institutions
- Record-keeping: Must maintain a protocol (permanent register) of all notarial acts
Powers Compared
What Both Can Do
- Administer oaths and affirmations
- Take affidavits
- Witness statutory declarations
- Verify identity of signatories
What Only a Notary Public Can Do
- Notarise documents for international use
- Authenticate documents for apostille or legalisation
- Certify copies for foreign authorities
- Execute notarial certificates recognised worldwide
- Prepare documents for use under the Hague Apostille Convention
- Attest signatures on powers of attorney for foreign property transactions
- Issue notarial protests (bills of exchange)
When You Need a Commissioner for Oaths
A Commissioner for Oaths is sufficient when your document stays within the Irish system:
- Affidavits for Irish court proceedings
- Statutory declarations for Revenue Commissioners
- Land Registry declarations
- Insurance claim statutory declarations
- Social welfare declarations
- Change of name declarations (domestic use)
When You Need a Notary Public
You need a Notary Public when your document crosses borders:
- Documents for foreign governments or embassies
- Powers of attorney for foreign property transactions
- Company documents for international business
- Academic transcripts for foreign universities
- Adoption documents for the Hague Convention
- Any document requiring an apostille or legalisation
- Marriage documents for use abroad
Cost Difference
Commissioner for Oaths fees are generally lower (€10–€30 per document) because the process is simpler. Notary Public fees are higher (€65–€150+ per document) reflecting:
- The specialist qualification required
- The detailed verification process
- Mandatory maintenance of a permanent protocol
- Higher professional indemnity insurance
- The international nature and responsibility of the work
A Common Mistake
Many people visit a solicitor (Commissioner for Oaths) to have a document “witnessed” or “stamped,” only to discover later that the foreign authority requires a Notary Public. This means the process must be repeated, costing additional time and money.
The rule of thumb: If there is any chance your document will be used outside Ireland, go to a Notary Public from the start. A Notary Public can do everything a Commissioner for Oaths can do, plus the international element.
Why Hugh Phelan Can Help with Both
Hugh Phelan is both a practising Solicitor (and therefore a Commissioner for Oaths) and a Notary Public, appointed by the Chief Justice of Ireland and commissioned for life. He holds a BCL from UCC and a Diploma in Notarial Law and Practice, and is dual-qualified in Ireland and England & Wales.
This means he can assess your needs and provide the correct service — whether that’s a simple oath for an Irish court or a full notarisation for international use — in a single appointment at his office on East Douglas Street, Douglas, Cork.
Frequently Asked Questions
What is the main difference between a Commissioner for Oaths and a Notary Public?
Scope of recognition. A Commissioner for Oaths covers domestic Irish matters. A Notary Public has international recognition — their seal and signature are accepted by foreign governments, courts, and institutions worldwide.
Can a solicitor notarise my documents for use abroad?
Not in their capacity as a solicitor or Commissioner for Oaths. You need a solicitor who also holds a separate Notary Public appointment.
Why is a Notary Public more expensive?
Notary fees reflect additional training, specialist qualification, international responsibility, professional indemnity requirements, and the permanent record-keeping obligation.
Do I need a Notary Public or Commissioner for Oaths for a statutory declaration?
For domestic Irish use, a Commissioner for Oaths is sufficient. For international use, you need a Notary Public.
Can a Commissioner for Oaths issue an apostille?
No. Apostilles are issued by the Department of Foreign Affairs, and the underlying document must be notarised by a Notary Public. A Commissioner for Oaths stamp cannot be apostilled.
Not Sure Which Service You Need?
Hugh Phelan is both a Commissioner for Oaths and Notary Public — book one appointment and get the right service.
Notary Public Cork — Book Now📞 +353-21-489-7134 · East Douglas Street, Douglas, Cork