An affidavit is a sworn written statement from a witness in a case. It is a document that sets out the evidence that the witness wants to give. Affidavits are usually written and prepared by a solicitor or a barrister after they get all the necessary information from the witness.

When the affidavit is ready, the witness goes to a Commissioner for Oaths or practising solicitor who will verify the affidavit. They will check that the person swearing the oath has read the affidavit and fully understands its contents. The witness will be asked to raise the Bible and to repeat the words of the oath. If the witness does not want to swear an oath on the Bible, they can make an affirmation. The witness then signs the affidavit.

The Commissioner for Oaths will verify that the affidavit was properly sworn by completing and signing a jurat on the affidavit. The affidavit can then be submitted as evidence to the court. To do this, you lodge the affidavit with the appropriate court office (paying the relevant fee to lodge it) and send a duplicate to the other party in the case.

Some cases do not involve an oral hearing with witnesses giving evidence in court. Instead, these cases are dealt using only affidavits. For example, if the plaintiff issues a summary summons, it will be accompanied by an affidavit setting out the facts of the case. The defendant can then respond by affidavit. The judge may be able to decide the case by reading the affidavits, which is a quicker and less expensive procedure.


An affidavit must include:

  • The title of the case
  • The identity of the person making the affidavit
  • The occupation and address of the person making the affidavit
  • A statement that the witness is over 18 years of age or, if they are not over 18, the age of the witness
  • The evidence, which must be facts that the witness is able to prove of their own knowledge. It must also state how they got this knowledge.
  • The signature of the witness and the date they signed it
  • A jurat, which is a section on the affidavit where the Commissioner for Oaths verifies and signs that the affidavit was properly sworn

The evidence the witness gives must be set out clearly in numbered paragraph format. The language is less formal than the language used in formal pleadings.

The rules for affidavits are set out in the court rules for the Superior, Circuit and District courts.


You need to pay a fee to lodge an affidavit with the relevant court office. This fee is €15 for the District Court and Circuit Court and €20 for the High Court and Supreme Court.

Your solicitor and barrister will also charge fees for their services.

Further information

You should get legal advice for more detailed information.

Page edited: 4 March 2019