BY Admin
May 16, 2026

What Makes a Will Invalid

A Will is one of your final acts, so it is important to make sure it is valid and capable of being enforced. If the document is not prepared correctly, your wishes may not be followed.

Creating a Will allows you to decide what should happen to your belongings, property, and assets after your death. In that sense, it can act as a final message to the people you care about. Because of that, you want to make sure the document is legally sound and difficult to challenge.

Unfortunately, not every Will is as strong as it should be. Certain mistakes can create uncertainty, disputes, or even cause the Will to be treated as invalid. Below are some common issues that may put a Will at risk.

Common Mistakes That Could Invalidate Your Will

 Creating a holographic, or handwritten, Will in a state that does not recognise it

 Not having the correct witnesses

 Lacking sufficient testamentary capacity

 Failing to follow your state's Will requirements

 Fraud or undue influence


Creating a Holographic Will

A holographic Will is a handwritten Will that is usually created without witnesses. Some states, including Texas and Maine, recognise holographic Wills as valid if the required conditions are met. Maine, for example, addresses this under Probate Code Title 18-C § 2-502.

Other states do not recognise holographic Wills, or only recognise them in limited circumstances. If you want to create this kind of Will, you should first check whether your state accepts it and what rules must be followed for it to be legally valid.

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Not Having the Proper Witnesses

Most states require a Will to be witnessed by at least two adults over the age of 18, although some states may require three witnesses. In many states, the witnesses must do more than simply watch you sign. They should also be able to recognise that you appear to be of sound mind at the time you sign the Will.

Key witness requirements to keep in mind include:

 Avoid interested parties: Beneficiaries and executors should not act as witnesses.

 Signatures required: Witnesses must sign the Will to confirm that they witnessed it.

 Notarization: Depending on your state, the Will may also need to be notarized.


Before signing your Will, check your state's witness rules carefully. Meeting these requirements at the time the Will is executed helps reduce the risk of challenges later.

Insufficient Testamentary Capacity

One of the most common reasons a Will is challenged is concern about the mental capacity of the testator, meaning the person making the Will.

In most states, you must meet a basic competency standard to create a valid Will. This usually means you understand:

 What property you own

 Who your relatives are

 Your relationship to the beneficiaries you have chosen

 What the Will says and what it means


Having dementia or another mental impairment does not automatically prevent someone from making a valid Will. What matters is whether the person has the required capacity at the time the Will is signed.

If you are concerned that someone may later claim you lacked testamentary capacity, it may be wise to work with an attorney and keep proper documentation. This could include a physician's report or even a video recording showing that you understood what you were doing when you made the Will.

Not Following Your State's Will Provisions

Each state has its own rules for Wills, including specific requirements and preferred wording. Before signing your Will, it is important to check what your state requires so the document is prepared correctly.

In general, your Will should include:

 A statement confirming that the document is your Last Will and Testament

 A clear explanation of who should receive which property or assets

 The name of an executor, who will manage probate and distribute your property according to the Will


Basic Requirements for a Valid Will

Although the details vary by state, every valid Will generally needs to meet three core requirements:

 Testamentary capacity: The testator must be of sound mind and legally old enough, usually 18 or older, when creating the Will.

 Testamentary intent: The document must clearly show that the testator intends to distribute their property after death. It should be obvious that the document is meant to be a Will.

 Proper execution: The Will must be signed by the testator and witnessed according to the specific requirements of the state.


Meeting these three basic requirements is essential, but it does not automatically make a Will impossible to challenge. A Will that satisfies these criteria can still be invalidated if there is evidence of fraud, undue influence, or another disqualifying issue.

Think of these requirements as the foundation. They are necessary, but they may not be enough on their own if other serious problems exist.

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Fraud or Undue Influence

If a court finds that fraud or undue influence was involved when your Will was created, the Will can be declared invalid.

Common examples may include:

 Undue influence: A nonfamily caregiver pressures the testator into leaving them an inheritance.

 Fraud: A family member gets the testator to sign a Will by pretending it is only a general legal document that needs a signature.


If you plan to leave gifts that your family may struggle to accept, it is wise to work with an attorney to help make the Will as strong as possible.

You may also want to speak with your family and document those conversations, so your wishes are not a complete surprise after your death.

Who Decides if a Will Is Invalid?

The probate court in the county where the deceased person lived has the authority to decide whether a Will is valid. This usually happens during the probate process, after the testator has died and the Will has been submitted to the court for review.

Interested parties can file a formal challenge to the Will's validity. This may include heirs, beneficiaries named in an earlier Will, or family members who believe they were wrongly left out.

These challenges usually have to be filed within a specific deadline after the Will is admitted to probate. Depending on state law, that deadline may range from 30 days to as long as two years.

When reviewing a challenge, the court may look at several types of evidence, including:

 The Will document itself and how it was executed

 Testimony from the witnesses who signed the Will

 Medical records if testamentary capacity is being questioned

 Evidence of the testator's relationships and any possible undue influence


In most cases, the burden of proof falls on the person challenging the Will. They must present enough evidence to persuade the court that something was wrong with the way the Will was created or signed. .The executor named in the Will usually has the responsibility to defend the Will's validity during this process.

What Can Invalidate a Will After Death?

Most issues with a Will do not appear until after the testator has died and the document is submitted to probate. At that point, interested parties have the chance to review the Will and raise objections.

Problems such as missing witness signatures, evidence of pressure or coercion, or concerns about the testator's mental capacity often come to light during the probate process.

Common reasons for challenging a Will after death include:

 Discovery that the Will was not properly witnessed or executed

 Medical evidence suggesting the testator did not have capacity when the Will was signed

 Statements or testimony from family members, caregivers, or others about possible undue influence

 A newer Will being found that replaces the version submitted to probate


Beneficiaries or heirs who want to contest a Will usually must file their objection within a specific period after probate begins. Depending on the state, this may be around three to six months. Once that deadline passes, challenging the Will usually becomes much harder.

To reduce the risk of disputes after death, keep your Will somewhere secure but accessible, and make sure your executor knows where to find it. If you create a new Will, make sure the current version is the one that will be found first, not an outdated document that no longer reflects your wishes.

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For added reassurance, you can choose to have your completed document reviewed by one of our trained specialists before signing.

How Can a Will Be Revoked or Replaced?

Revocation is different from invalidation. Instead of a court finding a problem with the Will later, revocation is an intentional act by the testator to cancel a Will while they are still alive.

When you create a new Will, it is important to destroy copies of older Wills. This helps avoid confusion if your current Will is not found and an outdated version is discovered instead. Ideally, only your most recent valid Will should be kept in a secure and accessible location.

There are three main ways to revoke a Will:

 Physical destruction: The testator tears, burns, shreds, or otherwise destroys the Will with the clear intention of revoking it. Accidental damage is not enough; the act must be deliberate.

 Creating a new Will: The testator signs a new Will that clearly states all previous Wills and codicils are revoked. This is usually the cleanest and most common method.

 Signing a revocation document: The testator signs a separate legal document that formally revokes the existing Will, even if a new Will is not created at the same time.


For any method of revocation to be valid, the testator must have the mental capacity to make that decision. A person who no longer has testamentary capacity cannot legally revoke their Will.

It is also important to remember that certain major life events may automatically revoke or change parts of a Will in some states. Marriage, divorce, or the birth of a child can affect how a Will is interpreted, or may invalidate certain provisions entirely.

If you go through a major life change, review your Will to make sure it still reflects your intentions.

The goal is to reduce the chance of anyone successfully contesting your Will or a court finding it invalid. Careful execution, proper witnessing, and attention to your state's requirements can help protect your final wishes.

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