What is the 120Day Rule for Will Contests

Emily just received notice that her mother’s will has been admitted to probate. She’s devastated. Not by the terms of the will itself, but by the fact that her mother, in the final months of her life, succumbed to the manipulative influence of a new “friend” who drafted the will. Emily is certain her mother didn’t understand what she was signing, and that this friend stands to inherit the vast majority of the estate. She’s furious and wants to challenge the will immediately… but she’s been told she has a very limited timeframe to act. And she’s right to be concerned.

The pressure is immense. Missing this window can be catastrophic, effectively locking in a fraudulent or coerced estate plan. It’s a common scenario, and one I’ve seen play out countless times over my 35+ years practicing as both an Estate Planning Attorney and a CPA. Clients come to me panicked, having delayed seeking legal counsel, only to discover the opportunity to challenge the will has already passed.

Why is There a Time Limit to Contest a Will?

California law imposes a strict deadline for challenging a will after it’s been admitted to probate. This isn’t about giving the estate time to settle; it’s about providing finality and preventing endless litigation. Once a will is officially accepted by the court, the clock starts ticking. Waiting even a few days can be fatal to your case. This is a particularly harsh rule when there’s suspicion of elder abuse or undue influence, as gathering evidence and securing expert testimony takes time.

What Exactly Is the 120-Day Rule?

Probate Code § 8270 states that, once the will is admitted to probate, interested parties have a strict 120-day window to file a petition to revoke probate. If you miss this deadline, the will is generally locked in stone, even if it was forged or signed under duress. It’s not 120 calendar days, but 120 court days. Court days exclude weekends and holidays, which can subtly shorten the timeframe.

Who Can Contest a Will Within 120 Days?

Not just anyone can challenge a will. You must be an “interested person” as defined by Probate Code § 48. This means you must financially benefit if the will is overturned. Typically, this includes:

• Heirs-at-law: Those who would inherit if there was no will (typically spouses, children, and parents).
• Beneficiaries named in a prior will: If you were promised something in an earlier version of the estate plan, you have standing to fight a newer will that cuts you out.
• Beneficiaries named in the current will: Even if you’re currently benefiting, you can contest if you believe fraud or undue influence tainted the process.

Simply being upset about the distribution isn’t enough. You need a financial stake in the outcome.

What are Common Grounds for a Will Contest?

Several factors can justify challenging a will within the 120-day timeframe:

• Lack of Testamentary Capacity: Probate Code § 6100.5 outlines that California uses a relatively low threshold for capacity. 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). Dementia, Alzheimer’s, or severe cognitive impairment are often central to these claims.
• Undue Influence: This occurs when someone exerts coercive control over the testator (the person making the will), overriding their free will. Probate Code § 21380 creates a presumption of undue influence if a gift is made to a care custodian of a dependent adult. This is especially relevant if a caregiver isolated the testator from family and friends.
• Fraud: This is where things get complicated. There’s a distinction between Execution Fraud (forged signature) and Inducement Fraud (lying to the testator). Proving a signature is fake often requires a forensic handwriting expert, whereas proving fraud in the inducement requires evidence that the testator relied on a lie (e.g., ‘your son is stealing from you’) to change their estate plan.
• Forgery: A blatantly false signature is, of course, grounds for a contest. But proving forgery requires expert analysis.

What Happens if You Miss the 120-Day Deadline?

While it’s possible to seek an extension, courts rarely grant them, especially if the delay is unexplained. Missing the deadline is usually fatal. The will becomes final, and the estate will be distributed according to its terms, even if you have compelling evidence of wrongdoing. There are very limited exceptions, typically involving situations where the fraud was concealed by the perpetrator.

Why a CPA-Attorney is Crucial in These Cases

As a CPA as well as an attorney, I see these situations from a unique perspective. Not only can I litigate the validity of the will, but I can also analyze the financial implications of a successful challenge. Understanding the potential step-up in basis for inherited assets and minimizing capital gains taxes are critical considerations. Furthermore, accurately valuing assets is essential, and a CPA’s expertise is invaluable in this regard. We’re not just fighting over who gets the assets, but how much those assets are worth after taxes.

What causes California probate cases to spiral into delay, disputes, and extra cost?

California probate is designed to provide court-supervised transfer of property, yet cases often break down when authority is unclear, required steps are missed, or disputes arise over assets, notice, and fiduciary conduct. When the process is misunderstood, families can face avoidable delay, escalating conflict, and increased exposure to creditor issues, hearings, or litigation before the estate can close.

To protect against specific family risks, review heir disputes without a will, check for left-out heirs issues, and be vigilant for signs of elder financial abuse.

California probate is most manageable when authority is documented early, assets are classified correctly, and procedure is followed consistently from petition through closing. When the process is approached with realistic expectations about notice, claims, accounting, and dispute risk, the estate is more likely to move toward closure without avoidable conflict or delay.

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.