If you believe a will doesn’t reflect what your family member actually wanted, your first question is probably whether you can do anything about it. The answer depends on who you are, when you act, and what you can prove.
In California, any “interested person” can challenge a will in probate — but that term has a specific legal meaning. And the window to act is 120 days from the date the court admits the will. Miss that deadline, and the option is gone.
In Short: In California, interested persons — heirs at law, beneficiaries under a prior will, or others with a financial stake in the estate — can contest a will in probate on four grounds: lack of testamentary capacity, undue influence, fraud, or improper execution. The deadline is generally 120 days after the court admits the will. Most contested estates settle before trial, often with all parties recovering less than they expected.
What Is an “Interested Person” in California Probate?
California Probate Code Section 48 defines “interested person” broadly. In practice, the people who typically have standing to contest a will are:
Heirs at law. These are the people who would inherit if there were no will at all — a spouse, children, parents, or siblings, depending on the family structure. If a will cuts them out entirely, they have a financial interest in challenging it.
Beneficiaries named in a prior will. If you were left more under an earlier version of the will — or were named at all — you may have standing to challenge a later version that reduced or eliminated your share.
Creditors of the estate. In some circumstances, a creditor with a claim against the estate qualifies as an interested person, though creditor-driven will contests are rare.
The common thread is a direct financial stake in the outcome. Someone who believes the deceased “would have wanted” them to receive something, but has no legal relationship to the estate, does not have standing. Disagreeing with how assets were divided is not the same as having the legal right to challenge it.
The Four Grounds to Contest a Will in California
Standing alone is not enough. You also need a legally recognized basis for the challenge. California courts recognize four grounds:
1. Lack of Testamentary Capacity
The person who made the will — the testator — must have understood what they were doing when they signed it. California law requires that they knew the nature of making a will, the extent of their property, who their natural heirs were, and how the will would distribute their assets.
A diagnosis of dementia, cognitive decline, or mental illness does not automatically invalidate a will. What matters is their mental state on the day the will was signed. This is where medical records, doctor notes, and witness accounts become critical evidence.
2. Undue Influence
Undue influence is the most frequently cited ground in California will contests. It occurs when someone used pressure, manipulation, or coercion to override the testator’s free will. Common patterns include a caregiver or new partner who isolated the elderly person from family, controlled their access to information, and pushed them to change the will in their favor.
Proving undue influence requires showing that the influencer had a confidential relationship with the testator, was in a position to exert that influence, and actually did — and that the resulting will reflects their wishes rather than the testator’s own. California courts look at the totality of circumstances, including who the testator’s natural heirs were and whether the will makes logical sense given the relationships involved.
3. Fraud or Forgery
A will can be challenged if the testator was deceived — either about what they were signing or about facts that led them to change the will. Outright forgery is rarer but does occur. Both are treated as fraud under California law.
4. Improper Execution
California has specific requirements for how a will must be executed: signed by the testator (or at their direction) and witnessed by at least two adults who were present at the same time. If those formalities weren’t followed, the will may be invalid regardless of the testator’s intent.
For a deeper look at how to actually file a will contest, see our post on how to contest a will in California.
The 120-Day Deadline — Don’t Assume You Have More Time
This is where many potential contestants lose before they start. Under California Probate Code Section 8270, you generally have until the later of:
- 120 days after the date the court admits the will to probate, or
- 60 days after the court clerk mails you a copy of the will along with notice that it has been admitted
In practice, the 120-day window controls for most people. That clock starts running the moment the probate court accepts the will — not when the estate is closed, and not when you first learn about the will’s contents.
If you think you have a basis to challenge a will, contact a probate litigation attorney immediately. The deadline doesn’t care about family disputes, out-of-state heirs, or difficulty finding legal representation.
Are you a beneficiary in a contested California estate waiting months or years for your inheritance? ProbateLend can advance you a portion of your share now — no credit check, no monthly payments. Apply at probatelend.com.
What Does a Will Contest Actually Cost?
Will contests are expensive. Understanding the realistic cost before filing is part of making a rational decision.
Attorney fees range from $10,000 on the low end for a simple matter that settles early, to well over $100,000 if the case goes to trial. Many probate litigators handle will contests on a contingency basis — meaning they take a percentage of the recovery rather than charging by the hour upfront. But not all do, and contingency arrangements typically apply only when there’s a meaningful estate to recover from.
Expert witnesses — particularly physicians or neuropsychologists testifying about the testator’s mental state — add significant cost. Medical experts in probate litigation can charge $5,000 to $15,000 or more for records review, a report, and courtroom testimony.
Court and deposition costs pile on. Depositions of witnesses, healthcare providers, and the attorneys who drafted the will can be lengthy and expensive.
The honest calculation is this: the potential recovery has to be large enough to justify the legal fight. A $40,000 inheritance dispute that costs $30,000 in attorney fees to pursue is a bad trade, even if you win.
No-Contest Clauses: A Risk Before You File
Many California wills include what’s called a “no-contest clause” — a provision that disinherits any beneficiary who challenges the will and loses.
California enforces these clauses, but with an important exception: a beneficiary who contests with “probable cause” — a reasonable, good-faith basis to believe the challenge is valid — is generally protected from forfeiture even if they lose.
If you were named in the will, know there’s a no-contest clause, and are considering filing anyway, talk to an attorney before doing anything. If your grounds are weak, you could lose both the contest and your inheritance. You can find experienced help through our California probate attorney directory.
The Realistic Outcome: Most Cases Settle
Here’s what many contestants don’t know going in: the majority of California will contest cases never reach trial. They settle.
That’s not necessarily a win. In a contested estate, both sides typically incur significant legal fees, which are often paid from the estate itself. By the time a settlement is reached, the estate has less in it — sometimes substantially less — than it did when the dispute started. Everyone walks away with less than they expected, including the beneficiaries who prevailed on the original will.
Settlement happens for practical reasons: litigation is expensive, outcomes are uncertain, trials take years, and most parties eventually decide that a negotiated resolution is better than gambling on a judge or jury. But it’s worth going in clear-eyed about what “winning” actually looks like in most cases.
A contested estate also adds significant time to the probate process. California probate already takes 12 to 18 months under normal circumstances. A contested case can extend that by two to four years or more. During that time, distributions are frozen.
What Happens to Your Inheritance During a Will Contest?
While a will contest is pending, the probate estate is largely frozen. The executor can take steps to preserve assets, but distributions to beneficiaries are on hold until the contest is resolved.
If you’re a beneficiary — either under the contested will or potentially under a prior will — you may be waiting years with no access to your inheritance.
A probate advance may be an option in some contested estates, depending on the circumstances. ProbateLend evaluates each case individually. If you’re a named beneficiary in a California probate with an active contest, contact us to see whether you qualify.
FAQ
Who has the right to contest a will in California?
Any “interested person” as defined under California Probate Code Section 48. This includes heirs at law — people who would inherit if no valid will existed — beneficiaries named in a prior version of the will, and others with a direct financial stake in the estate. People who aren’t heirs and were never named in any version of the will generally lack standing, regardless of their relationship to the deceased.
What is the deadline to contest a will in California probate?
Generally 120 days after the date the court admits the will to probate, or 60 days after the court clerk mails you a copy of the admitted will — whichever is later. This deadline is strict. Missing it almost certainly ends your ability to contest, so if you believe you have grounds, act immediately.
Can I contest a will if I was left out completely?
Yes, if you have standing — for example, you would have inherited under California intestate law, or you were named in a prior will. Being omitted from the current will doesn’t automatically give you grounds to contest. You still need a valid legal basis such as undue influence or lack of capacity.
How long does a will contest take in California?
Cases that settle early may resolve in 6 to 12 months. Cases that go to trial can take two to four years or longer. During that time, distributions to all beneficiaries are typically on hold.
Does a will contest affect everyone’s inheritance, including people who weren’t involved?
Yes. Legal fees incurred by the estate during a will contest — including the executor’s attorney fees — are typically paid from the estate before any distribution. Even beneficiaries who had nothing to do with the dispute may receive less because of the costs it generated. This is one of the most important practical realities to understand before filing.
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