What is the 120Day Rule for Will Contests

I had a client, Emily, come to me absolutely devastated. Her mother had recently passed, and Emily discovered a codicil—a change to the will—leaving the bulk of the estate to a new caregiver instead of Emily and her siblings. The problem? The codicil was signed just weeks before her mother’s death, and Emily was convinced this caregiver had manipulated her mother during a vulnerable time. She’d noticed changes in her mother’s behavior, increased isolation, and a new, overly-controlling presence in her life. But when she went to court to contest the codicil, she was shocked to learn her window of opportunity was almost completely closed, and the potential cost of a drawn-out legal battle would be astronomical. She’d waited too long.

Emily’s situation highlights a critical, often misunderstood aspect of California probate law: the 120-day rule, codified in Probate Code § 8270. This isn’t about the time you have to prepare a case; it’s about the deadline to file a petition with the court. 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.

Why is this rule so unforgiving? The legislature’s intent is to provide certainty and finality to estate administration. Prolonged contests disrupt the orderly transfer of assets and can drain the estate’s resources. But this also means swift action is paramount. Don’t assume you have months or even years to investigate; the clock starts ticking as soon as the will is admitted to probate.

What exactly does “interested person” mean in this context?

It’s not enough to simply believe a will is unfair. As outlined in Probate Code § 48, you must be an ‘interested person’—meaning you would financially benefit if the current will is overturned (e.g., a child disinherited by a new will, or a beneficiary named in a previous version). A distant relative with no stake in the estate, for example, likely wouldn’t have standing to contest the document.

What if I suspect forgery or fraud? Does the 120-day rule still apply?

Unfortunately, yes. Even in cases of potential forgery or fraud, the 120-day rule holds firm. However, understanding the type of fraud is critical. 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. Gathering this evidence within that compressed timeframe is challenging, but essential. We’ve successfully used handwriting analysis, witness testimony, and financial records to uncover fraudulent activity, but timing is everything.

What happens if the caregiver is the one who convinced my mother to change the will?

This is a common scenario, and one where California law offers some protection. Under Probate Code § 21380, California law presumes undue influence if a gift is made to a care custodian of a dependent adult. The burden of proof shifts to the caregiver to prove they did not coerce the senior. If they fail, they are disinherited and often liable for attorney fees. But even in these cases, you must act within the 120-day window to initiate the proceedings. This is where my background as a CPA is a significant advantage. I’m trained to detect unusual financial transactions and patterns of control that often accompany caregiver fraud. We can quickly identify red flags and gather the necessary documentation to build a strong case, focusing specifically on the step-up in basis and potential capital gains implications of improper asset transfers.

For over 35 years, I’ve helped families navigate these complex probate issues in Moreno Valley and throughout California. I’ve seen firsthand the devastating consequences of waiting too long to challenge a will. Don’t let Emily’s story be yours. If you have concerns about a will’s validity, contact me immediately to discuss your options.

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.

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.