Who Can Witness a Will in Ireland? Rules & Signing Checklist (2026)

Updated 14 August 2026.

A valid Irish will requires two witnesses, and the signing sequence matters. The safest practical choice is to use two competent, independent adults who are not receiving anything under the will and have no connection to a beneficiary that could put a gift at risk.

The statutory rule itself is set out in section 78 of the Succession Act 1965.

The Irish will witness rule in plain English

For the execution requirements in section 78:

1. The will must be in writing.
2. The person making the will signs at the foot or end, or another person signs in their presence and at their direction.
3. That signature is made or acknowledged while at least two witnesses are present at the same time.
4. Each witness signs in the presence of the person making the will.

The witnesses do not have to sign in each other's presence. The Act expressly says this. Nevertheless, keeping the testator and both witnesses together until everybody has signed is the cleanest practical way to avoid uncertainty later.

Who should you use as witnesses?

For a straightforward signing, choose two independent adults who understand that they are witnessing the execution of a will and can later give reliable evidence about the signing if that ever becomes necessary.

Section 78 does not express the witness rule as a simple 'must be 18+' provision. The practical recommendation to use competent independent adults is intended to reduce evidential and capacity problems, not to invent an extra statutory formality.

Can a beneficiary witness a will in Ireland?

Do not use a beneficiary as a witness.

Under section 82 of the Succession Act 1965, where an attesting witness is given a gift under the will, that gift is void so far as the witness is concerned. The same statutory rule applies to a gift to the witness's spouse.

This does not mean the entire will automatically becomes invalid. The problem is that the gift to the witness or spouse can fail. The practical solution is simple: use witnesses who receive nothing under the will.

Can an executor witness a will?

An executor is not disqualified merely because they are an executor. Section 84 of the Succession Act specifically provides that being an executor does not, by itself, make a person incompetent as a witness.

But executors are often also beneficiaries. If your executor is receiving a gift under the will, do not use them as a witness because of the section 82 beneficiary-witness rule.

Do both witnesses have to be in the room together?

They must both be present at the same time when the testator signs the will or acknowledges the signature. That simultaneous presence is part of section 78.

After that, each witness must sign in the testator's presence. The witnesses are not legally required by section 78 to sign in one another's presence.

Practical signing checklist

1. Use the final version of the will. Do not plan to edit it after signing.
2. Arrange for two suitable independent witnesses to be present together.
3. The testator signs the will, or acknowledges an existing signature, while both witnesses are present at the same time.
4. Witness 1 signs in the testator's presence.
5. Witness 2 signs in the testator's presence.
6. Complete the witness details requested by the document clearly.
7. Keep the original will safe and tell the appropriate person where it can be found.

Common witnessing mistakes

• having only one witness;
• asking the witnesses to attend at different times when the testator signs or acknowledges the signature;
• using a beneficiary, or the beneficiary's spouse, as a witness;
• sending the document away for witnesses to sign outside the testator's presence;
• making handwritten changes after execution and assuming they automatically form part of the will; and
• leaving unclear or incomplete witness details that make the execution harder to prove later.

What if the will was already signed incorrectly?

Do not try to repair an execution problem by adding signatures later without understanding the legal position. If there is doubt about whether an existing will was validly executed, get advice from an Irish solicitor. If the person making the will still has capacity and wants to execute a fresh document, professional advice can also help ensure the replacement is handled correctly.

Preparing your will now?

For the full process, see How to Make a Will in Ireland: Step-by-Step Guide.

Important: This article is general information, not legal advice. If there is any doubt about capacity, undue influence, execution or the validity of an existing will, obtain advice from a qualified Irish solicitor.