What is Improper Execution of a Will

Emily just received a devastating call from her brother’s widow. Despite having a valid will in place, the court rejected it. It turns out a small detail—the order in which the witnesses signed—was deemed fatal. Now, her brother’s estate could be distributed according to California’s default rules, meaning Emily and her siblings may receive significantly less than they were promised. This kind of mistake, a seemingly harmless oversight, can cost a family tens of thousands of dollars in legal fees, and, more importantly, shatter a loved one’s intentions.

As an Estate Planning Attorney and CPA with over 35 years of experience here in Moreno Valley, I’ve seen countless wills challenged for technical defects. It’s a frustrating situation because often the will reflects the client’s wishes, but a failure to follow specific statutory requirements can invalidate the entire document. The good news is, these errors are often preventable with careful attention to detail and the guidance of experienced counsel.

What are the Basic Requirements for a Valid Will in California?

California Probate Code § 6110 outlines the fundamental requirements. To be valid, a will must be:

• In Writing: This seems obvious, but handwritten wills (holographic wills) have very specific rules.
• Signed by the Testator: The person making the will (the “testator”) must sign it, or direct someone else to sign on their behalf in their presence.
• Witnessed by Two Individuals: Two disinterested witnesses must be present when the testator signs and must also sign the will themselves.
• All in One Transaction: The signing by the testator and the witnessing by both witnesses must occur in a single, uninterrupted session.

It’s not enough for the testator to sign the will one day and have witnesses sign it a week later. That breaks the “single transaction” rule and can render the will invalid.

What Exactly Does “Improper Execution” Mean?

“Improper execution” encompasses a wide range of errors. Common issues include:

• Incorrect Witnessing: Witnesses must be present when the testator signs. They can’t sign after the testator has left the room. Also, witnesses cannot be beneficiaries of the will.
• Missing Witness Signatures: Both witnesses need to sign for the will to be valid.
• Notarial Errors: If the will includes a self-proving affidavit (which makes probate easier), errors in the affidavit can invalidate it.
• Testator’s Signature Issues: The testator must have the mental capacity to understand they are signing a will (more on that below) and the signature must be genuine.

What if the Witnesses Don’t Understand the Requirements?

This is where things often go wrong. People try to save money by using do-it-yourself will kits or having friends or family act as witnesses without fully understanding their obligations. They may not realize the importance of the “single transaction” rule or that they can’t be a beneficiary. As a CPA, I see this issue frequently: someone might include a friend as a witness who is also designated to receive a portion of the estate. This immediately creates a conflict of interest and can void the will.

How Does Mental Capacity Affect Will Execution?

The law doesn’t require a person to be of perfect mental health to sign a will, but they must understand the nature of the act. Specifically, Probate Code § 6100.5 states that a person is considered of “sound mind” unless they lacked the ability to understand the nature of the testamentary act, the nature of their property, or their relationship to living family members (or suffered from a specific delusion). If someone is suffering from dementia or is under the influence of medication that impairs their judgment, their will could be challenged.

What if a Caregiver Was Involved?

This is a red flag. Probate Code § 21380 creates a presumption of undue influence if a gift is made to a caregiver of a dependent adult. The caregiver has the burden of proving they did not coerce the senior. We often see situations where a caregiver isolates the testator from family, controls their finances, and then benefits disproportionately in the will.

What Can Happen if a Will is Found to Be Improperly Executed?

If a will is deemed invalid, California’s intestacy laws will govern the distribution of the estate. This means assets will be distributed to heirs according to a pre-determined formula, which may not align with the testator’s wishes. Additionally, a lengthy and expensive court battle could ensue.

How Can I Avoid Improper Execution?

The best way to avoid these pitfalls is to work with an experienced Estate Planning Attorney. I’ve spent 35+ years navigating these complexities and ensuring my clients’ wills are legally sound. We handle every detail, from drafting the document to properly witnessing it and preparing a self-proving affidavit. And, because I’m also a CPA, I can help optimize your estate plan to minimize taxes and maximize the value of your inheritance. We consider the step-up in basis for assets, potential capital gains implications, and accurate valuation. Don’t risk losing everything on a technicality. Call my office today for a consultation.

What separates an efficient California probate process from a drawn-out conflict over authority and assets?

The path through California probate is rarely a straight line; it requires precise adherence to statutory deadlines, accurate asset characterization, and strict fiduciary compliance. Without a clear roadmap, what begins as a standard administrative proceeding can quickly dissolve into a costly battle over interpretation, valuation, and beneficiary rights.

Ultimately, the difference between a routine distribution and a protracted legal battle often comes down to preparation. By anticipating the demands of the Probate Code and addressing potential friction points with beneficiaries and creditors upfront, fiduciaries can navigate the system with greater confidence and lower liability.

Verified Authority on California Will Contests

• The 120-Day Statute of Limitations: California Probate Code § 8270
  Time is the enemy in a will contest. Under Section 8270, an interested person may petition the court to revoke the probate of a will, but this petition MUST be filed within 120 days after the will is admitted. Missing this deadline is usually fatal to the case.
• Mental Competency Standard: California Probate Code § 6100.5 (Unsound Mind)
  This statute defines exactly what “mental incompetency” means in probate. It is not just general forgetfulness; the contestant must prove the deceased did not understand the nature of the testamentary act, could not recollect their property, or was suffering from a specific hallucination or delusion that dictated the will’s terms.
• Presumption of Undue Influence (Caregivers): California Probate Code § 21380
  To protect vulnerable seniors, California law automatically presumes undue influence if a will leaves assets to a paid care custodian or the lawyer who drafted the instrument. This shifts the heavy burden of proof onto the accused to prove their innocence.
• No-Contest Clause Enforceability: California Probate Code § 21311
  Many wills contain threats to disinherit anyone who challenges them. This statute limits the power of those clauses. A beneficiary cannot be penalized for a contest if the court finds they had “probable cause” to file the lawsuit.
• Standing to Contest: California Probate Code § 48 (Interested Person)
  Not everyone can sue. To contest a will, you must qualify as an “interested person”—typically an heir who would inherit under intestate succession (if there were no will) or a beneficiary named in a prior valid will.
• Financial Elder Abuse Remedies: California Probate Code § 859 (Double Damages)
  Will contests often overlap with elder abuse claims. If the court finds that a person used undue influence, fraud, or bad faith to take assets (or change a will) to the detriment of the estate, they can be liable for twice the value of the property taken, plus attorney fees.