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Aug 02, 2026
A disappointed relative cannot overturn a Louisiana estate plan simply because the person expected a larger inheritance. A challenger must have a legally affected interest, identify a recognized basis for the challenge, and present enough evidence to support the claim.
Although an estate plan may include trusts, beneficiary designations, donations, and other documents, many post-death challenges focus on the decedent’s will. Three issues appear frequently: capacity, undue influence or fraud, and questions about how the will was prepared or signed.
1. The Testator Lacked Capacity
Louisiana law presumes that a person has the capacity to make a will. Therefore, the person challenging the will carries a significant burden.
Under Louisiana Civil Code Article 1477, a person must generally understand the nature and consequences of the disposition being made. The law does not require perfect memory or the ability to manage every financial detail.
Instead, the testator should generally understand:
- That the document is a will;
- That the will controls property at death;
- The property or types of property involved;
- The people who would ordinarily receive the property; and
- How the will distributes the estate.
Capacity must exist when the testator signs the will. Medical records from another date may provide useful evidence, but they do not automatically decide the issue.
Under Civil Code Article 1482, a person who challenges testamentary capacity generally must prove the lack of capacity by clear and convincing evidence.
Courts may consider medical records, expert opinions, witness testimony, the drafting attorney’s observations, and the testator’s conduct around the time of execution. The Succession of Sirgo illustrates how courts evaluate the complete factual record rather than relying on one diagnosis or witness.
Our articles on testamentary capacity in Louisiana and making a will after a dementia diagnosis discuss this issue in greater detail.
2. Someone Procured the Plan Through Undue Influence or Fraud
A will must reflect the testator’s wishes. It should not substitute the desires of a child, caregiver, romantic partner, or other interested person for those of the testator.
Louisiana Civil Code Article 1479 allows a court to invalidate a donation or testamentary disposition when another person’s influence so impaired the donor’s volition that the resulting disposition reflected the other person’s wishes.
A challenger may point to circumstances such as:
- A beneficiary arranging the attorney appointment;
- Someone preventing private conversations with the testator;
- A sudden and unexplained change from a longstanding estate plan;
- A vulnerable testator becoming isolated from family;
- A beneficiary giving the attorney all the instructions;
- The testator signing documents that no one adequately explained; or
- A person in a position of trust receiving an unexpected benefit.
None of these facts automatically proves undue influence. Family members often help older relatives schedule appointments, obtain transportation, and gather information. The question is whether the final plan reflects the testator’s independent decision.
Fraud presents a related but distinct issue. For example, someone may misrepresent what a document contains, conceal important facts, or substitute pages or signatures.
Under Civil Code Article 1483, a challenger generally must prove fraud, duress, or undue influence by clear and convincing evidence. However, the article provides a different burden in certain cases involving a confidential relationship between the donor and an unrelated wrongdoer.
Careful planning can reduce these allegations. The attorney may meet with the client alone, confirm the client’s instructions directly, document the reasons for an unusual distribution, and use independent witnesses. Our article on how to prevent will contests explains these precautions further.
3. The Will Was Not Properly Executed or Is Not Authentic
Louisiana recognizes specific forms of wills. A document that does not satisfy the applicable requirements may fail as a testament even if it accurately describes the decedent’s wishes.
An olographic will must comply with Civil Code Article 1575. The testator must write, date, and sign it in the testator’s own handwriting. If someone else typed or wrote part of the document, questions may arise about whether the will satisfies the required form.
Louisiana substantially revised the requirements for notarial wills in 2025. Under current Civil Code Article 1576, a notarial will must be:
- In writing;
- Dated;
- Executed before a notary in the presence of two witnesses; and
- Signed by the testator, both witnesses, and the notary.
If the testator cannot sign, the article allows the testator to make a mark or direct another person to sign in the testator’s presence.
The 2025 revisions also distinguish between a valid will and a self-proving will. Under Code of Civil Procedure Article 2887, signing every page and using an appropriate declaration can make a notarial will self-proving.
However, the absence of those additional features does not necessarily invalidate the will. Instead, the parties may need testimony from the notary, witnesses, or other people to prove its execution. Many older online articles still describe the law that applied before the 2025 revisions.
A party may also challenge whether the signature or handwriting is genuine. Louisiana law requires proof of an olographic will’s handwriting during probate, and a contested authenticity claim may require testimony, known handwriting samples, document examination, and other evidence.
A Challenge Can Affect More Than the Will
A dispute may also involve a trust amendment, beneficiary designation, lifetime donation, mandate, or ownership transfer. In some cases, the same allegations—such as incapacity, fraud, or undue influence—affect several transactions completed near the end of the person’s life.
As a result, families should review the entire sequence of transactions instead of examining one document in isolation. Bank records, medical records, communications, prior estate plans, and witness testimony may reveal whether the changes formed part of one coordinated plan.
Field Law Can Help
Field Law represents clients in Louisiana estate planning, successions, and succession litigation. We help families evaluate whether a challenge has a valid legal and factual basis, and we help clients create estate plans designed to reduce future disputes.
If you need to review a questionable will or strengthen your own estate plan, contact Field Law to schedule a consultation.
