Many people realize they need to update their will only after something small changes, such as replacing an executor, correcting a name, or updating a specific gift. In situations like these, the question is often whether the change requires a completely new will or whether a smaller amendment is enough.
A codicil is one way to make limited updates to an existing will without rewriting the entire document. It is commonly used when the original will still reflects overall intent, but a specific provision needs to be changed. In contrast, when updates are broader or involve multiple sections, creating a new will is often clearer.
Understanding how a codicil works, how to write a codicil to a will, and how it affects probate can help explain when it is commonly used and when a new will may be more appropriate. The sections below explain codicils in plain terms, including how they are drafted, executed, and treated during probate, with general guidance specific to Texas.
What Is a Codicil?

Source: legalandgeneral.com
A codicil is an added writing to a will that modifies or amends (in whole or in part) an existing document and confirms that everything else is still valid.
A codicil is not a complete replacement for the original will, but instead amends or changes particular terms in the body of the will and preserves it as a whole.
For example, if a named executor is unable to serve as executor for the decedent’s estate, the decedent can file a codicil to have the named executor replaced with a different person without changing the rest of the estate’s distributions.
Some instances of Codicils often amend Wills include:
● Updating or amending the name of the primary & alternate executor
● Changing the name of a Beneficiary
● Correcting the wrong spelling of a name or removing obsolete information
● Adding or removing any small gifts, both personal & financial
Example: Let’s suppose that you wrote a will leaving your heirloom to your grandchild. And in the case that the grandchild’s name has been changed, you can create a codicil that updates the name of your grandchild without having to completely rewrite the entire will, only that portion of your will.
In these situations, codicils are often used when the change is limited and does not alter the overall structure of the will. Whether a codicil or a new will is clearer depends on the scope of the update and how many prior amendments already exist.
When a New Will Is Usually the Better Option

In many instances where significant changes need to be made to a current will, people often choose to draft a new will rather than amend it through a codicil. Changing your will by creating a new will is often appropriate when you need to:
1. Change multiple details in your current will.
2. Experience major life events that significantly impact your financial or familial situation;
3. Already have many amendments to your will that you have created through a codicil;
For example: where many very significant changes are required, such as when making new changes to the division of property among beneficiaries and appointing a new executor, creating a codicil for all of these items will often lead to confusion and more complexity in the probate process since the courts will be required to interpret all of the documents together to help determine custody or distribute property according to intent.
The Way a Codicil is Usually Prepared
To create a codicil to your existing will, it’s best to first understand how codicils are generally created.
Identify the Original Will: The original will must be identified by its date to identify which document the codicil is amending.
Clearly State the Changes: The specific changes being made by each codicil must be described with precision. Codicils should refer to the section of the will being amended and describe how the section has been modified.
For example, if a gift has been revoked and replaced with a different gift, then that should be noted on the codicil.
Confirm the Effect of the Remaining Provisions of the Will: Most codicils contain language that confirms that all of the remaining provisions of the original will remain in effect; therefore, codicils help preserve the original will’s intent and protect the testator against any unintentional changes.
Properly Execute the Codicil: A codicil must be executed with the same formalities as a will. These formalities help show that the amendment reflects the testator’s intent. If execution steps are unclear or incomplete, the court may have difficulty determining how the amendment should be applied during probate.
General Rules: Requirement of Execution and Requirements of Witnessing
Generally speaking, most state laws require that a codicil follow the same procedure for signing and witnessing as would a will:
1. The testator will sign the codicil.
2. The witnesses will observe the testator’s signature.
3. The witnesses will also sign the codicil.
The above procedures provide a basis for the validity and intent of the codicil. If these procedures are not followed, the court may have difficulty confirming that the codicil reflects the testator’s intent during probate. The rules governing codicils vary from state to state.
For general information on statutes regarding wills, see: Texas Estates Code – Wills.
Texas-Specific Codicil Requirements
State law provides the regulations for execution and validity when it comes to codicils in Texas. The following is a general overview of those laws:
• The testator must sign the codicil;
• For most codicils, witnesses are required unless the codicil qualifies as a valid handwritten amendment (see below);
• Many codicils also include a self-proving affidavit, which helps simplify probate by reducing the need for later witness testimony.
• A will amendment in Texas is often made self-proving, which means that the witnesses sign an affidavit at the same time as the testator and, therefore, may lessen the need for witness testimony during probate.
Many Texans looking to create a codicil will seek forms available online; however, it should be noted that using a form alone does not ensure that the codicil is clear, properly executed, or fully consistent with the original will.
How Codicils Affect Probate

The will and codicil will be considered together as a single set of directions during the probate process by the court.
Typical issues that arise during this process are:
● Ambiguity between the Will and Codicils
● Multiple Codicils for the Same Item in the Will
● Disputes about the Validity of the Execution
During probate, the court reviews the will and any codicils together. If a codicil uses unclear language or conflicts with the original will, the court may need to interpret how the documents work together. Clear drafting and consistent execution help reduce confusion during this process.
Storage, Updates, and Recordkeeping
Following signing, a codicil is to be placed with the original will. Having documents together allows them to be viewed as a whole.
Common practices include:
● The codicil should be attached to the will.
● Keep the two documents in a secure place.
● Educating the executor that there is an amendment.
If the updates are frequent, it can be better to replace the whole will completely to provide more clarity.
Codicil vs Other Will Amendment
There are many different ways to amend or modify Estate Planning Documents, including the following:
● Codicils: (Small and specific Amendment)
● New Will: (More comprehensive than a Codicil)
● Update by an Attorney: (Has a focus on consistent execution)
Attorney-drafted estate planning documents are often used to help maintain consistency between the original will and any amendments. This approach can reduce ambiguity by ensuring that changes are clearly stated and properly aligned with the existing document. However, attorney involvement is not required in all situations.
Frequently Asked Questions
1. What is a codicil to a will?
A codicil is a written modification to specific sections of an already existing will.
2. Are codicils valid in Texas?
In Texas, a codicil is valid if executed correctly and under Texas law.
3. What are codicil witness requirements in Texas?
The procedures are similar to those of wills, but they differ depending on the type of document.
4. Can I use a Texas codicil form?
You can obtain a Texas codicil form; however, this type of form may not fully address all of the issues involved, including clarity of the codicil and the method of execution.
5. Does the presence of a codicil cancel a will?
The codicil merely modifies certain parts of the provisions.
6. Is it possible to have several codicils of the same will?
Yes, a single Will can have multiple codicils attached to it; however, adding multiple codicils to a single Will results in greater complexity and ambiguity regarding the interpretation of the Will.
Final Takeaway
A codicil can be a practical way to make small updates to an existing will, as long as the language is clear, the document is properly executed, and it is stored with the original will. In Texas, understanding when a codicil is enough and when a new will provides better clarity can help reduce confusion during probate.
For broader changes, many people choose to create a simple will online through Texas Estate Forms, which allows them to restate their wishes clearly in one updated document.

