Defences to defamation in Ireland: every defence under the 2009 Act as amended in 2026

Every defamation case in Ireland has two halves. The person defamed has to establish the four elements of the tort: a statement, a defamatory meaning, publication and identification. The person who made the statement then has the defences. Most contested cases are decided in the second half, which is why the defences are worth understanding on both sides.

This guide lists every defence in the Defamation Act 2009 as amended by the Defamation (Amendment) Act 2026, with its section number and what each one needs in evidence. It is written for the person defamed first, then for the person accused.

The defences at a glance

Apology under s.24 is not a defence as such but sits alongside them: an apology is not an admission of liability.

Truth (s.16)

The most complete defence. If the person who made the statement can show it was true, there is no claim, whatever damage it did. The burden of proving truth is on the defendant: you, as the person defamed, do not have to prove the statement was false.

What it needs in evidence is whatever establishes the facts alleged. For an accusation of non-payment, that means invoices and bank records. For a claim about someone's conduct, it means witnesses who saw it or documents that record it. Rumour, a belief that it was true, or the fact that other people said it first are not evidence of truth.

If you are the person defamed and the statement is true, the Act does not give you a claim, and a letter demanding its removal may invite a reply that sets the facts out. The guide on what to do if it is true, uses no names or says "allegedly" covers this.

Absolute privilege (s.17)

Some statements are protected whatever their content and whatever the speaker's motive. Section 17 lists the settings in which that applies; the one most often met in everyday life is a fair and accurate report of court proceedings. The 2026 Act extended that protection to fair and accurate reports of courts in Northern Ireland and elsewhere.

In evidence the defence turns on the setting: was the statement made in one of the protected places, and for a report, does it fairly and accurately reflect what was said in court?

Qualified privilege (s.18)

This is the defence most often relevant in workplaces, references, clubs and committees. It protects a statement made by someone with a duty or interest in making it, to someone with a corresponding duty or interest in receiving it. An employer giving a reference, a staff member reporting a concern to a manager, a committee member raising an issue with the committee: each may fall within it.

The defence is lost on malice: where the occasion was used for some purpose other than the duty or interest that justified it, qualified privilege falls away. It also depends on the audience having a duty or interest in receiving the statement, which is why an accusation copied to the whole office, rather than to the manager who needed to know, is on weaker ground.

In evidence the questions are: who received the statement, what was their role, why did the speaker think they needed to hear it, and is there anything that points to malice. The guide on defamation at work deals with this defence in the setting where it arises most.

Honest opinion (s.20)

Honest opinion is the defence for comment. It protects a statement that reads as the speaker's opinion rather than as an assertion of fact, and that the speaker honestly held. People still call it "fair comment", the older name, but the section to cite is s.20.

The hard line in practice is fact versus opinion. A review that says the reviewer found the service slow and the food poor reads as opinion. A review that says the business took payment and never delivered reads as fact, and the defence shifts to truth. The guide on fake and false Google reviews and the guide for someone sued over a review they wrote both turn on this line.

In evidence the defendant needs to show the facts the opinion rested on and the context in which it was published, so that the court can see it would have read as comment.

Fair and reasonable publication on a matter of public interest (s.26)

This defence is mainly used by newspapers and broadcasters. Before 2026 it was harder to establish. The 2026 Act simplified it to three things: the statement was on a matter of public interest, the publisher reasonably believed that publication was in the public interest, and the publisher acted in good faith.

In evidence it needs the publisher's working: what was checked, who was approached for comment, what the editorial reasoning was. The guide on the public-interest defence before and after 2026 covers it, and the changes page tracks the related anti-SLAPP provisions in Part 7 of the 2026 Act, which are not yet in force.

Innocent publication (s.27)

Not everyone in the chain of publication wrote the statement. Printers, distributors and online hosts have a defence under s.27 where they did not author the statement. For an online platform or a page administrator, the practical question is what they knew and when, and what they did once they were told. A notice under Article 16 of the Digital Services Act, which the notice builder prepares, is the step that puts a host on notice.

The guide on neighbours, clubs and community pages explains the position of a local page administrator.

Consent

If you agreed to the publication, you cannot complain of it. This is rarely raised, but it matters where someone approved a draft, agreed to be quoted, or asked for a statement to be shared. Written or recorded consent is the evidence.

Offer of amends (ss.22 and 23) and apology (s.24)

An offer of amends is an early offer of a correction, an apology and compensation. If it is accepted, the case ends on those terms. If it is rejected, the offer becomes a defence at trial unless the defendant knew the statement was false. The court also weighs the parties' conduct after an offer when fixing costs. Separately, s.24 provides that an apology is not an admission of liability, so an apology can be given without conceding the claim.

The guide on apologies, corrections and the offer of amends sets out the steps on both sides.

The two new defences from 1 March 2026

The retail defence. The 2026 Act added a defence where the statement was an inquiry into whether the plaintiff had paid for goods or services, made in good faith in the exercise of an interest or duty, and not published excessively. It is aimed at the shop-floor situation: a staff member asking a customer about an item that has not gone through the till. What defeats it is bad faith, or publishing more widely than the inquiry required, for instance by announcing the accusation across the shop floor. The guide on being falsely accused of shoplifting covers the customer's side, and the guide on the retail defence for shops and staff covers the shop's. In evidence the shop needs CCTV, till records and accurate staff accounts of exactly what was said, to whom and where.

The live-broadcast defence. Also new in 2026, this protects a broadcaster where reasonable steps were taken to prevent a defamatory statement being made during a live broadcast. In evidence that means delay systems, briefing of contributors, the presenter's response at the time and compliance records. The guide on complaining about a radio or television programme explains how this defence sits alongside the Coimisiún na Meán complaints route. Both defences were commenced on 1 March 2026 by S.I. No. 61/2026.

If you are the one accused

The table above is your map. Work through it from the top and ask which defence fits what you actually said and the setting you said it in.

If you can prove the statement is true, truth is the defence, and your job is to gather the documents and witnesses that establish the facts before memory fades and records are deleted. If what you said was plainly your view on a matter of public interest, honest opinion is the defence, and your job is to show the facts you based it on. If you made the statement to someone who needed to hear it, in a reference, a report to a manager, or a complaint to a committee, qualified privilege is the defence, and the key questions are who else received it and whether anything you did looks like malice. If you merely hosted, shared or administered a page, innocent publication is the defence, and what matters is how you responded once you were told.

Two things to do early, whichever defence applies: do not delete the statement or the surrounding messages, since the other side may already have captures; and consider an offer of amends, which may end the matter and, if refused, may become your defence unless you knew the statement was false. If a solicitor's letter has arrived, the guide on receiving a letter sets out the timetable.

Where this leaves you

For the person defamed, the defences tell you what the other side will say and what you will have to meet. For the person accused, they tell you what you have to prove and what to gather now. In either case the work is the same: records, captures, dates, and the names of the people who received the statement. The evidence kit takes each defence in turn and lists the material it needs, so you can see which defences are realistic before any letter is sent or answered.