This article is reviewed and approved by Katie Reddin, Solicitor, Peter O’Connor & Son LLP.
At Peter O’Connor & Son Solicitors, we often meet clients who have made a valid will in the past but now need to update it. Perhaps they want to change their executor, update a gift or remove a beneficiary. In many of these cases, rewriting the entire will isn’t necessary—a codicil is a simpler, valid alternative.
What Is a Codicil?
A codicil is a short legal document that allows you to make amendments to an existing will. It’s often used to make small changes, such as:
- Updating the name of a beneficiary
- Changing executors
- Modifying a specific bequest (e.g. changing the amount of a gift)
It is legally binding and must be signed and witnessed, just like a will.
When Should You Use a Codicil?
You should consider a codicil if:
- Your changes are minor or straightforward
- The rest of your will still accurately reflects your wishes
- You want to avoid the cost and effort of rewriting your will
However, if your changes are extensive or likely to cause confusion, we may recommend drafting a new will instead. We’ll advise you clearly on which option is best for your situation.
Legal Requirements for a Codicil in Ireland
To be valid in Ireland, your codicil must:
- Be made voluntarily and by someone with legal capacity
- Be in writing
- Be signed by the testator in the presence of two independent witnesses
- Be stored safely with your original will
Failing to meet any of these conditions could render your codicil invalid.
Risks of DIY Codicils
We strongly advise against creating a codicil without legal guidance. Even a small error—such as using unclear language or choosing the wrong witnesses—can cause serious issues later, including family disputes or probate delays.
Our Approach to Codicils
At Peter O’Connor & Son Solicitors, we:
- Review your current will to assess what’s needed
- Draft a legally sound codicil that reflects your wishes clearly
- Ensure it is signed and witnessed correctly
- Advise you on whether a codicil or a new will is the better route
If you’re unsure whether your will still reflects your wishes, let us help. Contact us today to discuss making a codicil or reviewing your estate plan. We’ll ensure your affairs are in order and legally protected.

