Does a Codicil Have to Be Notarized? State Rules Explained

Meta description: Find out whether a codicil must be notarized, what signing and witness rules generally apply, and how state laws can affect whether it is valid.

In most U.S. states, a codicil does not have to be notarized to be valid. It generally must be signed and witnessed according to the same rules that apply to a will, and those requirements vary by state. Notarization can still be useful: a notary may certify a separate self-proving affidavit that helps a probate court accept the document without tracking down witnesses. Because an improperly executed codicil can create uncertainty or fail, checking the applicable state law matters.

What Is a Codicil?

A codicil is a legal document that changes, adds to, or revokes part of an existing will. For example, a person may use one to update a gift, name a different executor, or change a beneficiary after a life event. A codicil is generally read together with the will it modifies; it does not automatically replace the entire will.

Although a codicil can be shorter than a new will, it is not merely an informal note. It is a testamentary document, and courts typically look for proof that it was executed with the required legal formalities. The document should clearly identify the will being changed and describe the intended changes without creating ambiguity.

Does a Codicil Have to Be Notarized?

Usually, no. In many states, notarization is not a basic requirement for a will or codicil to be valid. Instead, the key requirements are commonly that the person making it—called the testator—has legal capacity, intends the document to change their will, signs it, and has the required witnesses attest to the signature.

State law controls, however, and there is no single nationwide rule. A state may recognize different kinds of wills, impose particular witness or signing procedures, or have special rules for electronic wills. The requirements can also depend on whether the document is typed, handwritten, signed by someone on the testator’s behalf, or made under unusual circumstances.

That distinction matters: notarizing a codicil is not necessarily a substitute for having witnesses. If the state requires witnesses and the codicil is not properly witnessed, a notary’s stamp alone may not make it valid. Conversely, if the codicil meets the state’s execution rules, the absence of notarization does not usually invalidate it.

What Signing Requirements Usually Apply?

In a common execution process, the testator signs the codicil—or acknowledges an existing signature—in front of the required witnesses. The witnesses then sign to attest to the testator’s signature or acknowledgment. The number of witnesses and the details of the process depend on state law. Many states commonly require two witnesses for a typed will or codicil, but the precise rules should be checked locally.

Witnesses are generally expected to be adults who can understand what they are witnessing. Some states allow an interested person—such as someone who receives a gift under the will—to serve as a witness, but that can create legal complications. In some jurisdictions, a gift to an interested witness may be restricted or treated differently. Using disinterested witnesses is often a prudent way to reduce avoidable disputes.

Execution details can matter as much as the number of signatures. Witnesses may need to sign in the testator’s presence, and some states require them to be present at the same time. Other states permit different procedures. A codicil should not be signed casually or sent around for signatures without confirming that the process meets the applicable rules.

What Does Notarization Do?

A notary public verifies a signer’s identity and records an acknowledgment or oath, depending on the notarization performed. That can help establish that a signature is genuine. But notarization does not, by itself, establish that the testator had legal capacity, understood the document, acted voluntarily, or followed every required will-signing rule.

Notarization is often associated with a self-proving affidavit. This is a separate statement, commonly signed by the testator and witnesses before a notary, that helps show the will was properly executed. If the affidavit meets state law, it can allow a probate court to accept the will without requiring witnesses to testify about the signing. A codicil may also be accompanied by a self-proving affidavit where state law permits.

Self-proving procedures are not identical across the country. Some states permit a self-proving affidavit to be attached to a will; others use language or forms prescribed by statute. Some allow an affidavit to be added after the will was signed, while others have particular conditions. A notary should not be assumed to have supplied a legally sufficient affidavit merely because the document bears a notarial seal.

Codicil Signing Requirements at a Glance

Handwritten and Electronic Codicils

Handwritten Codicils

Some states recognize holographic wills, which are generally handwritten and may be valid without the witnesses required for a typed will. The rules differ significantly. A state may require the important provisions, or the entire document, to be in the testator’s handwriting, and it may require a signature. Notarization is not necessarily required, but it does not cure a failure to meet the state’s holographic-will rules.

A handwritten codicil can also create practical problems. Handwriting may be difficult to authenticate, unclear language can invite disagreement, and a court may need evidence about the document’s origin and intent. A person should not assume that a handwritten change on an existing will—or a note attached to it—will be treated as a valid codicil.

Electronic Wills

Some states have enacted laws recognizing electronic wills, which may allow signing and witnessing through electronic procedures. The rules can address electronic signatures, remote witnessing, storage, and access to the original record. Other states may not recognize an electronic will executed under another state’s rules in the same way. A digital signature or a scanned, notarized paper document should not be assumed to meet the requirements for an electronic codicil.

How to Make a Codicil More Reliable

1. Confirm the governing state law. Usually, the law of the state where the person is domiciled at death will be important, but execution and choice-of-law issues can be more complicated. A lawyer can advise when a person has moved, owns property in multiple states, or has a document prepared elsewhere.
2. Identify the existing will. State the date of the will being amended and identify the specific provisions being changed. The wording should make clear which parts remain in effect.
3. Use clear, consistent language. Specify the replacement gift, beneficiary, executor, or other change precisely. Avoid broad language that might unintentionally affect unrelated provisions.
4. Follow the signing formalities exactly. Arrange the testator’s signature and witness signatures in the order and presence required by state law. Use disinterested witnesses when practical.
5. Consider a self-proving affidavit. If available, a properly completed affidavit may simplify probate. It must follow the state’s requirements; a notary stamp alone is not enough.
6. Keep documents together and secure. Store the original codicil with the original will or in a location where the executor can find it. Tell the appropriate person where it is, without altering or marking the will in a way that could create confusion.

When a New Will May Be Better Than a Codicil

A codicil can be appropriate for a small, clearly defined change. But several codicils—or a major change—can make the estate plan hard to interpret. Different documents may conflict, and an executor or probate court may have to determine which provisions still apply.

A new will may be the cleaner option when the existing will is old, contains multiple outdated provisions, or needs substantial revision. It can also be preferable after major life changes, such as marriage, divorce, the birth or adoption of a child, a significant change in assets, or a move to another state. The effect of these events on an existing will differs by state, so relying on an automatic rule can be risky.

When a new will replaces an older one, it should clearly revoke prior wills and codicils and be executed with the required formalities. The old documents should not be destroyed until the new document has been correctly prepared and signed. An estate-planning attorney can help prevent gaps between the old plan and the replacement.

Common Mistakes That Can Cause Problems

• Assuming notarization makes a document valid. A notary’s signature does not necessarily replace required witnesses or confirm that every legal condition has been met.
• Changing the original will by hand. Crossing out a gift, writing a new name in the margin, or attaching a note may fail to satisfy codicil rules and can create uncertainty about the original document.
• Using a beneficiary as a witness without checking the law. The witness may be competent to attest to the signing, while the gift to that witness is still affected under state law.
• Leaving the will and codicil separated. A missing or undiscovered codicil can lead to confusion about which terms govern. Secure storage and clear communication help.
• Using a generic form without reviewing state requirements. A form may not reflect local witness rules, affidavit language, or the person’s circumstances.

How to Check the Rule in a Particular State

State statutes are the primary source for execution requirements. A state legislature’s official website or a state court’s self-help resources may provide the relevant law or practical forms. For broader legal research, the Cornell Legal Information Institute’s overview of wills can help explain general terminology, but it is not a substitute for current state law.

For legal analysis, the Uniform Law Commission’s Uniform Probate Code materials offer a model framework used, in whole or in part, by some jurisdictions. A model act is not automatically the law in every state; the state’s enacted statutes and current court decisions control.

Because a codicil affects property distribution and can be challenged in probate, an estate-planning attorney is especially useful when the change is substantial, beneficiaries disagree, the testator’s capacity could be questioned, or the estate involves property in more than one state. This information is general and does not replace advice about a specific document or state.

Frequently Asked Questions

Can a codicil be valid if it is not notarized?

Often, yes. If the codicil satisfies the applicable state’s signing and witness requirements, notarization may not be necessary. A state-specific review is important, especially for handwritten or electronic documents.

Is a notarized codicil valid without witnesses?

Not necessarily. If the state requires witnesses for that type of codicil, notarization alone usually does not satisfy the witness requirement. Some states recognize exceptions, including certain holographic wills, but those rules are specific and should not be assumed.

Should a codicil be notarized even if it is not required?

Notarization may be useful when completing a valid self-proving affidavit or when identity verification is helpful. The signing still needs to comply with the state’s rules, and the affidavit must meet its own requirements.

Does a codicil need to be filed with a court?

Usually, a codicil is kept with the will during the testator’s lifetime and presented during probate if required. Filing and storage procedures differ by jurisdiction. A local court or estate-planning attorney can explain whether a state offers a will-deposit service and how it works.