Quick answer
A codicil is a legally binding document that allows you to make minor amendments to your will without rewriting it entirely, typically used in England and Wales when circumstances change. You can use a codicil to alter beneficiaries, update specific gifts, or modify funeral wishes, though significant changes may warrant a complete will revision. Codicils must be executed with the same formalities as a will—signed by you in the presence of two independent witnesses who must also sign—and generally become effective immediately upon execution. In most cases, codicils are more cost-effective than redrafting a full will, though they can create complexity if multiple amendments accumulate. This guide explains what codicils are in 2026/27, how to create one correctly under English law, and when you might consider alternative options instead.
Last reviewed: 24 May 2026 by the MP Estate Planning editorial team. Jurisdiction: England and Wales. Scotland and Northern Ireland have different probate and intestacy rules; the IHT thresholds are UK-wide.
Three rule changes you may need to consider (2026/27)
1. Pensions become subject to IHT from 6 April 2027. Most unused defined-contribution pension pots currently sit outside the estate for IHT — that ends on 6 April 2027 (gov.uk policy paper). HMRC estimates around 10,500 estates will face IHT for the first time as a result.
2. Business and agricultural property reliefs capped at £2.5m per person from 6 April 2026. Above the cap, only 50% relief applies — effective IHT of 20%. AIM shares dropped to 50% relief and do not use the £2.5m allowance (Saffery — APR/BPR reforms).
3. The NRB, RNRB and £2m taper threshold are frozen until 5 April 2031 following the 2024 and 2025 Budgets (gov.uk — NRB and RNRB freeze). With inflation, more estates will be pulled into IHT each year — a process commonly called “fiscal drag.”
When circumstances change, your will may need to be updated to reflect your new wishes. In the UK, a codicil is a legal document that allows you to make minor adjustments to your existing will without having to rewrite it entirely.
We understand that making changes to your will can be a daunting task. However, using a codicil can be a straightforward and efficient way to update your estate plans. For instance, you can use a codicil to change a beneficiary or update your funeral arrangements. If you’re considering making significant changes, it may be worth reviewing your entire estate plan to ensure it remains relevant. You can find more information on updating your estate plan on our website: updating your estate plan.
Key Takeaways
- A codicil is a legal document used to make minor changes to your existing will.
- It allows you to update your will without having to rewrite it entirely.
- Codicils are useful for making small adjustments, such as changing a beneficiary.
- You can use a codicil to update your funeral arrangements.
- Significant changes may require a review of your entire estate plan.
What is a Codicil to a Will?
In the UK, making amendments to your will can be achieved through a legal document known as a codicil. A codicil allows you to make changes to your existing will without having to rewrite the entire document.
Definition of a Codicil
A codicil is essentially a legal document that supplements your original will. It must be signed and witnessed in the same manner as your original will, ensuring its validity and legal standing. This means that when you sign a codicil, you must do so in the presence of two independent witnesses, who then sign the document themselves.
The purpose of a codicil is to make specific changes or additions to your will, which can include altering beneficiaries, adding new bequests, or changing the executors of your estate. By using a codicil, you can update your will to reflect changes in your circumstances or wishes without having to create an entirely new will.
Legal Standing of a Codicil
The legal standing of a codicil is equivalent to that of the original will. Once executed correctly, a codicil becomes a legally binding document that must be read in conjunction with your original will. This means that any changes or additions specified in the codicil will override the corresponding parts of the original will.
To ensure the codicil’s validity, it’s crucial to follow the proper execution procedures. This includes signing the codicil in the presence of two witnesses, who are not beneficiaries or spouses of beneficiaries named in the will or codicil. By doing so, you can be confident that your codicil will be recognized as a legitimate amendment to your will.
Why Use a Codicil Instead of a New Will?
Using a codicil to amend your will is a practical solution, especially for minor changes. When you need to make adjustments to your existing will, you might be unsure whether to draft a entirely new will or simply add a codicil.
Cost-Effectiveness
One of the primary reasons to opt for a codicil is its cost-effectiveness. Creating a new will can be a costly and time-consuming process, involving legal fees and potentially complex procedures. In contrast, adding a codicil is generally less expensive and can be a more straightforward process, especially for minor adjustments.
Using a codicil can save you money on legal fees associated with drafting a new will. This is particularly beneficial for individuals who need to make small changes, such as updating beneficiaries or modifying specific bequests.
Simplicity in Amendments
A codicil also offers simplicity in making amendments. It allows you to make targeted changes to your will without having to rewrite the entire document. This can be particularly useful for minor adjustments, ensuring that your will remains up-to-date and reflects your current wishes.
| Aspect | Using a Codicil | Drafting a New Will |
|---|---|---|
| Cost | Generally less expensive | Can be costly |
| Time | Less time-consuming | More time-consuming |
| Complexity | Simplifies minor changes | Involves rewriting the entire will |
In conclusion, using a codicil to amend your will can be a cost-effective and simple solution, particularly for minor changes. By understanding the benefits and process of adding a codicil, you can ensure that your will remains relevant and accurately reflects your wishes.
Key Elements of a Valid Codicil
To ensure that your will amendments are legally binding, it’s essential to grasp the fundamental elements of a codicil. A codicil is a legal document that allows you to make changes to your existing will without having to rewrite it entirely.
Witness Requirements
One of the critical elements of a valid codicil is the witness requirement. In the UK, a codicil must be signed in the presence of two independent witnesses. These witnesses should not be beneficiaries of the will or related to beneficiaries, as this could invalidate their testimony.
Signatory Rules
The signatory rules for a codicil are similar to those for a will. The person making the codicil (the testator) must sign the document in the presence of the two witnesses, who then sign the codicil themselves. This process ensures that the testator’s signature is witnessed and validated.
Date and Revocation Clauses
Including the date on your codicil is crucial, as it helps to establish the order of documents and ensures that the most recent amendments are recognized. Additionally, a revocation clause may be included to explicitly state that any previous codicils are revoked, although this is not always necessary if the latest codicil is clearly the most recent amendment.
To illustrate the key elements of a valid codicil, consider the following table:
| Element | Description | Importance |
|---|---|---|
| Witnesses | Two independent witnesses required | Ensures the testator’s signature is validated |
| Signatory Rules | Testator signs in the presence of witnesses | Prevents disputes over the testator’s intentions |
| Date | Codicil should be dated | Establishes the order of documents |
| Revocation Clause | Optional clause to revoke previous codicils | Prevents confusion between multiple codicils |
By understanding and adhering to these key elements, you can ensure that your codicil is valid and legally binding, thereby safeguarding your will amendments.
How to Draft a Codicil
Making changes to your will in the UK can be achieved by drafting a codicil, a process we will guide you through. Drafting a codicil requires careful consideration to ensure that the changes you intend to make to your will are clear and legally binding.
Steps to Follow
When drafting a codicil, there are several steps you should follow:
- Reference the original will, including the date it was made.
- Specify the changes you wish to make, whether it’s changing beneficiaries, adding new assets, or updating executors.
- Ensure the codicil is signed in the presence of two independent witnesses.
It’s crucial to be meticulous in this process to avoid any confusion or disputes.
Language and Clarity Considerations
The language used in a codicil should be clear and unambiguous. Avoid using jargon or complex legal terms unless absolutely necessary. Clarity is key to ensuring that your wishes are understood and carried out. When specifying changes, be precise about what is being changed and how it affects the original will.
As noted by legal experts, “When drafting a codicil, it’s crucial to be clear and precise to avoid misunderstandings.” This principle guides the drafting process, ensuring that the codicil effectively amends the original will without causing confusion.
Common Scenarios for Using a Codicil
Updating your will doesn’t always require rewriting it entirely; a codicil can be a simple and effective way to make minor adjustments. As life events unfold, your estate plans may need to be adapted to reflect new circumstances. A codicil provides the flexibility to make necessary changes without the need for a completely new will.
Changing Beneficiaries
One common reason to use a codicil is to change beneficiaries. This could be due to various life events such as the birth of a new grandchild, a marriage, or a divorce. For instance, you might want to add a new grandchild as a beneficiary or remove an ex-spouse. A codicil allows you to make these changes easily. It’s essential to be clear and specific when updating beneficiaries to avoid any confusion or disputes.
Key considerations when changing beneficiaries include:
- Ensuring the new beneficiary is clearly identified
- Updating the relevant sections of your will
- Having the codicil witnessed and signed according to legal requirements
Adding Specific Bequests
Another scenario where a codicil is useful is when you want to add specific bequests to your will. This could involve leaving a particular item or sum of money to a specific individual or charity. For example, you might want to bequeath a family heirloom to a relative or donate a certain amount to a favourite charity. A codicil enables you to make these additions without altering the rest of your will.
When adding specific bequests, it’s crucial to:
- Clearly describe the item or amount being bequeathed
- Specify the beneficiary
- Ensure that the bequest is legally valid and aligns with your overall estate plan
Differences Between a Codicil and a New Will
The decision to amend a will via a codicil or create a new will depends on several factors, including the extent of the changes.
When considering amendments to your will, it’s essential to understand the implications of both options. While a codicil can be a convenient and cost-effective way to make minor adjustments, significant changes may necessitate a new will to avoid potential legal complications.
Time and Effort Comparison
Creating a codicil generally requires less time and effort compared to drafting a new will. This is because a codicil only needs to outline the specific changes to be made, rather than reiterating the entire will.
- A codicil is typically shorter and more straightforward.
- It focuses solely on the amendments, making it quicker to prepare.
- However, for extensive changes, the cumulative effect of multiple codicils can become confusing.
In contrast, a new will provides a clear and consolidated document that includes all amendments. While it demands more time and effort to create, it offers clarity and reduces the risk of misunderstandings or disputes.
Legal Implications
The legal implications of choosing between a codicil and a new will are significant. A codicil must be executed with the same formalities as the original will, including witnessing and signing. If not done correctly, it can lead to disputes or even invalidation.
Key legal considerations include:
- Ensuring the codicil is properly witnessed and signed.
- Verifying that the codicil does not contradict the original will or other codicils.
- Understanding that a new will typically revokes all previous wills and codicils, providing a clear legal standing.
For major changes or when the will is outdated, creating a new will is often the recommended course of action to avoid potential legal issues.
Legal Requirements for Codicils in the UK
When it comes to amending a will in the UK, it’s essential to comprehend the legal requirements for codicils. The legal framework governing codicils is designed to ensure that amendments to a will are made in a manner that is both legally binding and respectful of the testator’s intentions.
Jurisdictional Variations
The UK is comprised of different jurisdictions, namely England and Wales, Scotland, and Northern Ireland, each with its own set of laws and regulations regarding codicils. For instance, the laws governing codicils in England and Wales may differ from those in Scotland or Northern Ireland. It is crucial to understand these jurisdictional variations to ensure that your codicil is valid.
As Mark Baxter, a legal expert, once noted, “The complexity of jurisdictional variations can often lead to confusion. It’s essential to seek advice tailored to your specific jurisdiction.”
| Jurisdiction | Key Legal Requirements |
|---|---|
| England and Wales | The codicil must be signed in the presence of two witnesses. |
| Scotland | The codicil requires to be signed in the presence of two witnesses, and it’s advisable to have it notarized. |
| Northern Ireland | Similar to England and Wales, with the additional recommendation of having it witnessed by a solicitor. |
Registration Processes
While codicils do not need to be registered, it is advisable to store them safely with the original will. This ensures that the executors can easily locate and act upon the amendments made. The Principal Probate Registry in England and Wales, for example, can accept the deposit of a will, and by extension, a codicil, for a fee.
To ensure that your codicil is executed correctly, it’s vital to follow the proper procedures for its creation, signing, and storage. This not only provides peace of mind but also ensures that your wishes are carried out as intended.
Tips for Executing a Codicil
Executing a codicil requires careful attention to detail to ensure its validity. When making amendments to your will, it’s crucial to follow the correct procedures to avoid any potential disputes or complications.
Best Practices for Signing
To sign a codicil correctly, you must do so in the presence of two independent witnesses. This means that the witnesses should not be beneficiaries or spouses of beneficiaries named in the will or codicil. We recommend choosing witnesses who are likely to be available to verify the signature in the future.
The signing process involves:
- Signing the codicil in the presence of two witnesses.
- Ensuring the witnesses sign the codicil immediately after you.
- Keeping the signing process straightforward and free from any undue influence.
Importance of Notifying Executors
After executing a codicil, it’s essential to notify the executors of your will about the changes made. This ensures they are aware of their responsibilities and the updated wishes as stated in the amended will.
Notifying executors involves:
- Providing them with a copy of the codicil.
- Explaining the changes made and their implications.
- Ensuring they understand their role in carrying out your wishes as per the updated will.
We also recommend storing the codicil with the original will in a safe and secure location, such as a fireproof safe or a secure storage facility. This helps prevent loss or damage to the documents.
| Best Practice | Description |
|---|---|
| Signing in Presence of Witnesses | Sign the codicil in front of two independent witnesses. |
| Notifying Executors | Inform executors about the changes and provide them with a copy of the codicil. |
| Secure Storage | Store the codicil with the original will in a safe location. |
Consulting a Legal Expert on Codicils
When dealing with codicils, it’s essential to consider seeking professional advice to ensure that the document is correctly executed and valid. While it’s possible to draft a codicil without legal assistance, consulting a legal expert can provide peace of mind and protect your intentions.
Expert Guidance for Complex Situations
Seeking professional advice is particularly important in complex situations, such as when making significant changes to your will or when dealing with multiple beneficiaries. A solicitor can help you navigate these complexities and ensure that your codicil is properly drafted and executed. For more information on using codicils and potential pitfalls, you can visit our website.
Selecting the Right Solicitor
Choosing the right solicitor is crucial in ensuring that your codicil is handled correctly. Look for a solicitor with experience in estate planning and wills, and consider their reputation and expertise. By consulting a legal expert, you can ensure that your codicil is valid and effectively carries out your wishes.
FAQ
What is a codicil to a will in the UK?
A codicil is a separate document that allows you to make changes to your existing will without having to rewrite it entirely. It is a legally binding document that must be executed with the same formalities as the original will.
How do I add a codicil to my will?
To add a codicil to your will, you need to draft the changes you wish to make, sign the codicil in the presence of two independent witnesses, and ensure that the codicil references the original will.
What are the advantages of using a codicil instead of drafting a new will?
Using a codicil can be cost-effective and simpler than drafting a new will, particularly for minor changes such as changing a beneficiary or updating funeral arrangements.
What are the essential elements required for a codicil to be considered valid?
A valid codicil requires witness signatures, a clear signatory statement, a date, and revocation clauses to avoid confusion with the original will or other codicils.
Can I make major changes to my will using a codicil?
While a codicil can be used to make changes to your will, it is generally advisable to create a new will for major changes or when the will is outdated, as this can help avoid confusion and ensure clarity.
How do I ensure that my executors are aware of the codicil’s existence and location?
It is essential to notify your executors about the codicil and store it safely with the original will to prevent loss or confusion.
What are the legal requirements for codicils in the UK?
In the UK, codicils must be signed in the presence of two independent witnesses, and it is recommended that you follow the same formalities as the original will to ensure validity.
When should I seek professional advice on creating a codicil?
You should consider seeking professional advice when making significant changes to your will or if you are unsure about the process of creating a codicil to ensure that it is properly drafted and executed.
How do I choose the right solicitor to help with my codicil?
When choosing a solicitor, look for someone with experience in estate planning and wills, and consider their reputation and fees to ensure you receive expert guidance.
What are the benefits of consulting a legal expert when dealing with codicils?
Consulting a legal expert can provide valuable guidance on drafting and executing a codicil, ensuring that your intentions are protected and that the codicil is valid and effective.
Is a Handwritten Codicil Legally Valid in the UK?
One of the questions our team encounters most frequently is whether a codicil needs to be typed and professionally prepared, or whether a handwritten note added to a will can carry the same legal weight. The answer depends significantly on which part of the UK you are in — and on whether the correct formalities have been followed, regardless of how the document looks on the page.
England and Wales: Handwriting Is Permitted, But Execution Remains Essential
In England and Wales, there is no legal requirement for a codicil to be typed or professionally drafted. A handwritten codicil may be perfectly valid, provided it meets the execution requirements set out in section 9 of the Wills Act 1837. This means the codicil must be signed by the testator in the presence of two independent witnesses, both aged 18 or over, who must also sign in the testator’s presence. Neither witness should be a beneficiary under the will or codicil, nor the spouse or civil partner of a beneficiary, as this may invalidate the gift to that person.
In our experience, handwritten codicils fail not because they are handwritten, but because the execution formalities are overlooked — a signature missing a witness, or witnesses who signed on a different occasion rather than simultaneously. These are the details that can unravel an otherwise straightforward amendment.
Scotland: A Different Legal Framework Applies
Scotland operates under a distinct legal regime. The Requirements of Writing (Scotland) Act 1995 governs the formal validity of testamentary writings in Scotland, and the rules differ materially from the Wills Act 1837. In Scotland, a will or codicil is generally valid if it is subscribed by the granter — meaning signed at the end — though having the document witnessed and registered for preservation adds significant practical protection. Anyone with Scottish domicile or Scottish assets should seek guidance from a Scottish solicitor rather than relying on England and Wales guidance.
The Hidden Risks of a Valid but Poorly Managed Codicil
Even where a codicil is technically valid, we regularly see avoidable problems arise in practice. Common issues include:
- The codicil being stored separately from the original will, so the executor finds only one document
- An unsigned photocopy being left as the only surviving version after the original is misplaced
- A tax-efficient clause in the original will being accidentally overwritten by a codicil drafted without full sight of the existing document
- Multiple codicils accumulating over time, creating contradictory or ambiguous provisions that may require the court to determine the testator’s true intention
A codicil that is valid in law but inconsistent with the underlying will may still generate contested estate proceedings, which can be considerably more costly than a full will rewrite would have been at the outset. Where changes are complex, where the underlying will is old, or where more than one codicil already exists, our team would generally recommend considering a fresh will rather than adding another layer of amendment.
Common Questions About Codicils
Is a handwritten codicil legal in the UK?
In England and Wales, a handwritten codicil is generally legally valid provided it is executed correctly under the Wills Act 1837 — signed by the testator in the presence of two independent witnesses aged 18 or over, who each sign in the testator’s presence. The handwriting itself is not the issue; the execution formalities are. In Scotland, the Requirements of Writing (Scotland) Act 1995 applies instead, and the rules differ, so Scottish residents should seek advice from a Scottish-qualified solicitor. Northern Ireland follows similar principles to England and Wales but has its own legislation, and professional guidance is advisable in all jurisdictions.
Can a codicil to a will be revoked?
Yes. A codicil may be revoked in several ways: by a subsequent will or codicil that expressly revokes it, by deliberate physical destruction of the document by the testator with the intention of revoking it, or — in England and Wales — automatically upon the testator’s marriage or civil partnership, which typically revokes the entire will and any codicils attached to it. It is also worth noting that divorce or annulment does not revoke a will outright in England and Wales, but it may affect gifts and appointments made in favour of a former spouse. The Wills Act 1837 remains the primary source of these rules for England and Wales.
What is the 28-day rule in wills?
The 28-day rule is a survivorship clause commonly included in wills to prevent assets passing to a beneficiary who dies shortly after the testator. Where such a clause is present, a beneficiary must typically survive the testator by 28 days to inherit under the will. If the beneficiary does not survive that period, the gift usually falls back into the residue of the estate or passes under an alternative provision. This clause is relevant to codicils because if you are amending your will to add or change a beneficiary, you may also wish to consider whether the survivorship provisions in your existing will need to be reviewed at the same time.
What is the cheapest way to change your will?
A codicil is generally the most cost-effective route for straightforward, minor amendments. Solicitor fees for drafting a codicil in the UK typically range from £75 to £300 depending on complexity, compared with the higher cost of preparing an entirely new will. That said, the cheapest option is not always the most appropriate one. Where changes are substantial, where there are already multiple codicils in existence, or where the underlying will is significantly out of date, a full rewrite may ultimately cost the estate less than the complications a poorly constructed codicil could create. Our team would always encourage a full review of the existing will before deciding which route is right.
Do I need a lawyer to add a codicil to my will?
There is no legal requirement in England and Wales to use a solicitor or regulated professional to draft a codicil. However, given the risks of conflicting clauses, unintended revocations, and the technical execution requirements, professional guidance is generally advisable — particularly where the amendment touches on inheritance tax planning, trusts, property, or business assets. The Solicitors Regulation Authority maintains a public directory of regulated solicitors if you wish to instruct a qualified practitioner. Our team can assist with reviewing your existing arrangements and identifying whether a codicil or a new will is the more appropriate solution for your circumstances.