Should I Create a Will Codicil or a New Will?
Modify your last will using a codicil today.
A codicil is a legal document that modifies, adds to, or revokes specific provisions of an existing last will and testament without replacing the entire will. Codicils typically must be signed and witnessed with the same formalities required for the original will, and they become part of the estate record during the probate process.
Create your will codicil
Get StartedWhen your circumstances change, such as a new grandchild, a different beneficiary, or a revised executor, you do not always need to rewrite your entire last will and testament. A codicil lets you make targeted amendments while leaving the rest of your estate plan intact. Whether a codicil is the right tool depends on the scope of the changes you need to make, and this guide explains exactly how to decide.
Table of Contents
What Is a Codicil?
A properly executed codicil is a formal legal amendment to an existing will. It allows a testator, the person who made the will, to add, change, or remove specific provisions without drafting an entirely new document. The codicil references the original will by date and must be executed with the same legal formalities: signed by the testator and witnessed by the required number of witnesses under state law.
Key facts about codicils:
- A codicil modifies your will — it does not replace it. Both documents work together.
- It must be signed and witnessed with the same formalities as your original will.
- It must be physically attached to your original will or stored with it.
- It can add new provisions, change existing ones, or revoke specific bequests.
- At probate, the codicil becomes part of the official estate record alongside the original will.
Codicils are most commonly used to update a beneficiary designation, name a new guardian for a minor child, add a specific bequest, or change an executor — situations where the rest of the will remains sound and only one or two provisions need adjustment.
Codicil vs. New Will: How to Decide
The right choice depends on how many changes you need to make and how deeply they affect your existing estate plan. Use the comparison table below as a quick reference, then read the sections that follow for detailed guidance.
| Factor | Codicil | New Will |
|---|---|---|
| What it is | A legal amendment to an existing will | A completely new testamentary document |
| When to use | Minor, well-defined changes | Major overhaul or life-changing event |
| Signing formalities | Same as original will — witnesses generally required | Same as original will — witnesses generally required |
| Cost | Generally lower — shorter document | Higher — full document drafted |
| Risk of confusion | Higher if multiple codicils exist | Lower — single clean document governs |
| Best for | Updating a beneficiary, adding a bequest, naming a new guardian | Divorce, remarriage, major asset change, executor death |
When to Use a Codicil
Use a codicil when you need to make a small number of clearly defined changes to a will that is otherwise current and accurate. If only a few provisions in your will need updating and the core structure of your estate plan is sound, a codicil is typically the more efficient choice.
Common scenarios where a codicil is appropriate:
- Changing a beneficiary designation, such as adding a new grandchild or removing a former spouse from a specific bequest
- Naming a new executor or personal representative after the original one has died, declined the role, or become unavailable
- Adding or updating pet care provisions, including designating a caretaker and leaving funds for the animal's care
- Specifying burial or cremation wishes not addressed in the original will
- Naming a new guardian for a minor child after the originally named guardian becomes unable or unwilling to serve
- Adding a specific bequest of an item acquired after the original will was signed, such as new property or a meaningful personal possession
- Clarifying ambiguous language in one section without altering the rest of the document
If only a few changes are needed and they are clearly defined, a codicil is typically the better choice. LegalNature offers the guidance to navigate the nuances of codicil preparation across all 50 states and the District of Columbia.
When to Create a New Will
Create a new will when the changes you need to make are extensive, affect the overall structure of your estate plan, or involve a major life event. Accumulating too many codicils can create confusion about which document controls, and a single clean will is easier for an executor to interpret during the probate process.
Common scenarios where a new will is the better choice:
- Marriage or divorce — these events often affect spousal rights, beneficiary designations, and the overall distribution of your estate
- Death of a named executor — if your primary and backup executors are both deceased, a new will allows you to appoint a successor cleanly
- Major changes to your assets, such as acquiring significant new property, selling a business, or a substantial increase or decrease in your estate's value
- Relocation to a state with significantly different will execution or community property laws
- Changes affecting more than one-third of the will's provisions — at this level of revision, a new will is typically clearer and more legally sound than a heavily amended document
- Birth of a child or adoption, particularly if you need to restructure guardianship and inheritance provisions broadly
- Reconciliation with or estrangement from multiple beneficiaries simultaneously
If you have determined that a new will is the right path, LegalNature's last will and testament form walks you through the entire document from start to finish, with state-specific guidance at every step.
How to Write a Codicil to Your Will
Writing a codicil follows the same legal formalities as the original will.
- Review your current will and identify the specific provisions to change. Pull your original will and locate the exact sections or bequests you want to amend. Note the will's date — the codicil must reference it.
- Draft the codicil with clear, specific language referencing the original will's date. The codicil should state specifically which will that it is amending. This may be specified by referencing the original will's date and which provisions are being adjusted. Any vague language creates ambiguity at probate.
- Use LegalNature's codicil form to create a legally compliant document. LegalNature's form dynamically reflects your state's requirements, so you can be confident the document meets local law.
- Sign the codicil with the same witnesses as required for the original will. Most states require two disinterested witnesses — people who will not inherit under your will. Do not sign until all required witnesses are present.
- Attach the codicil to the original will and inform your executor. Store both documents together in a secure location and make sure your executor knows where to find them.
Notarization note: Some states require notarization in addition to witnesses — check your state's specific requirements before signing. LegalNature's codicil form will indicate whether notarization is required in your state. Some states also allow remote online notarization (RON).
Frequently Asked Questions
What is a codicil to a will?
A codicil is a legal document that amends, supplements, or partially revokes an existing last will and testament. It allows a testator to update specific provisions, such as a beneficiary, executor, or bequest, without replacing the entire will. A codicil must be signed and witnessed with the same formalities as the original will to be legally valid.
When should I use a codicil instead of writing a new will?
Use a codicil when you need to make a small number of clearly defined changes to a will that is otherwise current and accurate. If you are updating one or two provisions, such as changing a beneficiary, naming a new guardian, or adding a bequest, a codicil is typically the faster and simpler choice. If your changes are extensive or involve a major life event like divorce or remarriage, a new will is usually the better option.
How do I write a codicil to my will?
To write a codicil: (1) review your existing will and identify the exact provisions to change; (2) draft language that clearly references the original will by date and specifies the amendment; (3) sign the codicil in the presence of the required number of witnesses; and (4) attach the codicil to the original will and store both securely. LegalNature's codicil form guides you through each step with state-specific requirements built in.
Is a codicil legally binding?
Yes. A properly executed codicil is legally binding and becomes part of your estate record at probate, carrying the same legal weight as the original will. To be valid, the codicil must meet your state's execution requirements — typically a written document signed by the testator in the presence of two witnesses. A codicil that does not meet these formalities may be challenged or disregarded at probate.
How many codicils can you have?
There is generally no legal limit on the number of codicils you can add to a will. However, multiple codicils increase the risk of confusion about which provisions control, and conflicting language between codicils or between a codicil and the original will can complicate probate. If you find yourself needing a third or fourth codicil, it is generally advisable to replace the will entirely with a new, consolidated document.
Do I need a lawyer to write a codicil?
You are not legally required to use an attorney to create a codicil. Many people prepare codicils using online legal document preparation services like LegalNature. That said, it is highly recommended to consult with an attorney if the changes involve complex provisions, potential disputes among beneficiaries, or significant tax implications — since each state has its own specific requirements and an attorney can help you avoid drafting errors that could be challenged at probate.
Can a codicil be used to change an executor?
Yes. Changing an executor is one of the most common uses of a codicil. If your named executor has died, become unable to serve, or if you simply want to appoint someone different, a codicil can designate a new executor without requiring you to rewrite the entire will. Make sure the codicil clearly identifies the previous executor by name and explicitly names the replacement.
What happens if my codicil conflicts with my will?
When a codicil conflicts with the original will, courts generally give the codicil priority for the specific provisions it addresses, on the basis that it represents the testator's most recent intent. However, conflicts between multiple codicils or ambiguous amendment language can lead to litigation. To avoid this, codicils should be drafted with precise language that clearly identifies what is being changed and what remains unchanged.
What is the difference between a codicil and a new will?
A codicil amends specific provisions of an existing will without replacing the entire document. A new will supersedes all prior wills entirely and starts fresh. A codicil is appropriate for targeted changes; a new will is appropriate when the scope of changes is broad, a major life event has occurred, or the existing will has accumulated too many amendments to remain clear. Both must be signed and witnessed with the same formalities under state law.
Create Your Codicil Today
Updating your will should not require starting from scratch. LegalNature's online codicil form makes it simple to amend specific provisions, add new bequests, or update an executor in minutes, with state-specific requirements built in automatically.
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