What Is an Affidavit? Everything You Need to Know

Affidavits are one of the most important legal documents in the Irish court system. If you've been asked to "swear an affidavit" — perhaps by a solicitor, a court, or a government body — this guide explains exactly what an affidavit is, what it contains, how to swear one correctly, and when you need one.

What Is an Affidavit?

An affidavit is a written statement of fact that is sworn on oath (or affirmed) to be true before an authorised person. The word "affidavit" comes from the Latin "affidavit," meaning "he or she has sworn." In Irish law, an affidavit is a formal legal document that serves as written evidence, primarily used in court proceedings.

When you swear an affidavit, you are making a solemn promise — either on a religious text or by way of affirmation — that everything stated in the document is true and accurate to the best of your knowledge and belief. This gives the affidavit the same weight as oral evidence given under oath in court.

Affidavits are used extensively in the Irish legal system. They allow courts to receive evidence in written form without requiring the person to appear in court to give oral testimony. This is particularly useful in interlocutory applications (preliminary hearings), family law proceedings, probate matters, and many other types of court proceedings.

The legal framework for affidavits in Ireland is governed by the Rules of the Superior Courts (Order 40) and the Rules of the Circuit Court, which set out the formal requirements for the content, format, and swearing of affidavits.

When Do You Need an Affidavit?

Affidavits are required in a wide range of legal situations in Ireland, including:

• Court proceedings: Most applications to the High Court, Circuit Court, and District Court require supporting affidavit evidence. This includes injunctions, judicial review applications, family law matters, and debt enforcement.
• Probate applications: When applying for a Grant of Probate or Letters of Administration, the executor or administrator must swear various affidavits, including the Inland Revenue Affidavit (Form SA.2).
• Family law: Affidavits of means, affidavits of welfare, and grounding affidavits are all commonly required in separation, divorce, and custody proceedings.
• Property transactions: Affidavits may be required in conveyancing matters — for example, to confirm compliance with planning conditions or to address title issues.
• Bankruptcy and insolvency: Petitions in bankruptcy and applications for personal insolvency arrangements require supporting affidavits.
• Company law: Various company law applications to court require affidavit evidence, including applications to wind up a company or to appoint an examiner.

What Does an Affidavit Contain?

An affidavit in Ireland must follow a specific format prescribed by the Rules of Court. It typically includes:

• Title: The title of the court proceedings (including the court name, record number, and names of the parties).
• Heading: "AFFIDAVIT OF [Name]" — identifying who is swearing the document.
• Commencement: The deponent's full name, address, and occupation, followed by the words "aged 18 years and upwards MAKE OATH and say as follows" (or "DO SOLEMNLY AND SINCERELY DECLARE AND AFFIRM" for affirmation).
• Numbered paragraphs: The facts are set out in sequentially numbered paragraphs. Each paragraph should deal with a distinct matter. Facts must be stated from personal knowledge, and any information received from others must be identified as such ("I am informed by [person] and believe that...").
• Exhibits: If documents are referred to, they must be exhibited (attached) to the affidavit with exhibit labels (e.g., "Exhibit A").
• Jurat: The formal endorsement at the end confirming when and where the affidavit was sworn, and before whom. The jurat reads: "Sworn before me [date] at [location] by the said [name] who is personally known to me / who has been identified to me by [means of identification]."

How to Swear an Affidavit in Ireland

The process of swearing an affidavit is formal and must be carried out correctly for the affidavit to be legally valid:

Step 1: Have the Affidavit Drafted

The affidavit is typically drafted by your solicitor in the correct legal format. It is important that the affidavit is prepared before you attend to swear it — you should read it carefully and ensure all facts are accurate before the swearing appointment.

Step 2: Bring Identification

You must bring valid photo identification (passport or driving licence) to the swearing appointment. The person administering the oath must verify your identity.

Step 3: The Swearing Ceremony

You attend before the authorised person (Commissioner for Oaths, solicitor, or Notary Public) with the unsigned affidavit. The process is as follows:

1. Your identity is verified.
2. You confirm that you have read and understood the affidavit.
3. You take the oath — either on a religious text (Bible, Quran, etc.) or by way of solemn affirmation if you prefer not to swear on a religious text.
4. You sign each page of the affidavit and any exhibits.
5. The person administering the oath signs the jurat and applies their stamp.

For a detailed walkthrough, see our guide on how to swear an affidavit in Ireland.

Who Can Administer an Oath for an Affidavit?

In Ireland, an affidavit can be sworn before:

• A Commissioner for Oaths: Most practising solicitors in Ireland are Commissioners for Oaths. However, the solicitor who drafted the affidavit or who is acting for the person swearing it should ideally not be the same person who administers the oath.
• A practising solicitor: Any solicitor holding a current practising certificate can administer an oath.
• A Notary Public: This is particularly recommended if the affidavit is for use in foreign proceedings, as the notarial seal provides international recognition.
• A court official: In certain courts, an official of the court (such as a court registrar) can administer oaths.

Affidavit vs Statutory Declaration

People often confuse affidavits and statutory declarations. While both are formal written statements of fact, there are key differences:

• Oath: An affidavit is sworn on oath or by affirmation. A statutory declaration is declared to be true without an oath.
• Primary use: Affidavits are primarily used in court proceedings. Statutory declarations are used for administrative and non-court purposes.
• Format: Affidavits follow the strict format required by the Rules of Court. Statutory declarations follow the format prescribed by the Statutory Declarations Act 1938.
• Penalties: Both carry criminal penalties for false statements — perjury for a false affidavit, and prosecution under the Criminal Justice (Perjury and Related Offences) Act 2021 for a false statutory declaration.

Consequences of a False Affidavit

Swearing a false affidavit is the criminal offence of perjury in Ireland. Under the Criminal Justice (Perjury and Related Offences) Act 2021, perjury is an offence that can carry a significant prison sentence. Beyond criminal liability, a false affidavit can also result in a court striking out your case, awarding costs against you, and potentially referring the matter to the Director of Public Prosecutions.

It is essential that everything stated in an affidavit is true and accurate. If you are unsure about any fact, the affidavit should state that the information is based on belief, identifying the source of that belief.

Frequently Asked Questions

What is an affidavit in Ireland?

An affidavit is a written statement of fact that is sworn on oath or affirmed to be true before a person authorised to administer oaths, such as a Commissioner for Oaths, a practising solicitor, or a Notary Public. Affidavits are primarily used as evidence in court proceedings in Ireland.

Who can administer an oath for an affidavit in Ireland?

In Ireland, an oath for an affidavit can be administered by a Commissioner for Oaths, a practising solicitor, a Notary Public, or a court official. Most practising solicitors are automatically Commissioners for Oaths.

What is the difference between an affidavit and a statutory declaration?

An affidavit is sworn on oath and is primarily used in court proceedings. A statutory declaration is made under the Statutory Declarations Act 1938 without an oath and is used for administrative and non-court purposes. Both carry criminal penalties for false statements.

Need to Swear an Affidavit in Cork?

Hugh Phelan is a Solicitor and Notary Public practising from East Douglas Street, Douglas, Co. Cork. He can administer oaths for affidavits, and — if the affidavit is for use in foreign proceedings — notarise it for international recognition. Hugh ensures your affidavit is properly sworn and legally valid.

Contact Hugh Phelan's office today at 021-489-7134 or email info@phelansolicitors.com to book an appointment.