California Probate Litigation: Resolving Will Contests & Estate Disputes

by Michael A. Hackard

Publication Date June 26, 2026 in Estate Litigation

A signature on a document is often just the beginning of the inquiry, not the end of it. We see this in case after case: a parent’s estate plan changes significantly in the final months of their life, after a new caregiver has entered the picture, after the family has been slowly pushed to the periphery, after the phone calls stopped getting returned. The will gets filed. The children meant to inherit find themselves reading a language they do not know, reflecting on wishes their parents never spoke to them in forty years of conversation. And then someone asks the question that brings families to our office: if this document doesn’t really say what my parent wanted, what can we do about it?

The answer is that California law provides more tools than most people realize, but those tools have deadlines, evidentiary requirements, and procedural demands that cannot be navigated casually. California probate litigation is the formal court process used to resolve exactly these conflicts, and understanding how it works, what it requires, and what it genuinely costs is the starting point for any family weighing whether to act.

Understanding Probate Litigation in California

When someone dies, their estate generally passes through probate court unless assets are held in a living trust, are jointly titled, or are designated to a named beneficiary. The probate process is meant to be orderly: the will is submitted, a personal representative is appointed, creditors are paid, and the remaining assets are distributed to heirs. In an uncomplicated estate administered in good faith, that sequence works reasonably well. But when the will itself is suspect, when the executor is not dealing honestly with beneficiaries, or when assets have been moving in strange directions, the probate court becomes a litigation arena rather than an administrative venue.

A wide range of issues are covered by California probate litigation, including claims of financial elder abuse, formal accounting demands, petitions to remove or surcharge an executor, challenges to the validity of a will, and inheritance rights under intestate succession. Each has its own timeline and burden of proof, as well as its own procedural framework under the California Probate Code. The fundamental idea that the probate court exists to uphold a decedent’s true intent and hold fiduciaries responsible when they violate it is what unites them all.

Step-by-Step Timeline of a California Probate Dispute

The timeline of a California probate dispute follows a recognizable arc, though the pace varies considerably depending on the estate’s complexity and whether the parties are prepared to litigate aggressively or resolve matters through negotiation. A petition for probate is filed, typically within 30 days of the decedent’s death, and the court sets a hearing date to admit the will and appoint a personal representative. Notice is then provided to heirs and creditors, which triggers the window during which a will contest can be filed. An appointment is followed by discovery, which in contested cases includes subpoenas for financial histories, bank records, and medical records. Experts are hired, depositions are taken, and the matter either goes to a contested hearing before the probate judge or is resolved through mediation. In California, supervised probate can take 12 to 18 months for simple estates. Two to three years is typical when litigation is involved, and complicated fraud cases can take longer.

We always recommend that clients help us create a timeline right away. When did the decedent’s mental state start to deteriorate? When was the estate plan modified? Who attended the signing? Who was going to benefit? Cases are won or lost by reconstructing that chronology against financial statements, medical records, and witness statements. This work must start before it becomes more difficult to find evidence.

Independent Administration of Estates Act (IAEA) vs. Court-Supervised

California’s Independent Administration of Estates Act allows a personal representative to administer most aspects of an estate without obtaining prior court approval for each action, thereby significantly reducing the time and cost of probate. Under the IAEA, the executor can sell real property, pay debts, and distribute assets, provided proper notice is given to beneficiaries who then have the right to object. Full independent administration gives the executor broad authority; limited independent administration restricts certain transactions, including real property sales, to actions requiring court approval.

Some of the most common types of probate fraud include: Transferring or hiding assets before or during administration; presenting a forged or fraudulently induced will; a personal representative dealing with the estate as a personal account and misappropriating the funds; and changing beneficiary designations or setting up joint accounts to drain assets completely from the estate.

Common Grounds for Will Contests in California

Not every will that produces an unhappy result is fraudulent. California law recognizes that people have the right to leave their estates as they choose, even if those choices surprise or disappoint their families. But the law also recognizes specific circumstances under which a filed will can and should be challenged, and the grounds are more varied than most people assume.

The recognized grounds to contest a will in California include undue influence, lack of testamentary capacity at the time of signing, fraud, forgery, improper execution of the document, duress, mistake, and revocation by a superseding instrument. Each of these requires different evidence and a different litigation strategy, but all share the same fundamental premise: the document does not reflect what the decedent actually intended, and California courts have the authority to say so.

Undue Influence & Lack of Testamentary Capacity

Of all the grounds to challenge a will, undue influence and lack of testamentary capacity are the ones we encounter most frequently, and they often appear together in the same case. Lack of testamentary capacity means that at the time the decedent signed the will, they did not understand the nature of the document they were executing, the extent of their property, the identity of the natural objects of their bounty, or how the plan distributed their estate among those people. A diagnosis of advanced dementia at the time of signing is the clearest example, but capacity is assessed at the moment of execution, and a person can have good days and bad days. Medical records from the period surrounding the signing are critical.

Undue influence is more subtle and often more difficult to prove. It occurs when someone in a position of trust and confidence over the decedent uses that position to substitute their own intent for the decedent’s. California Probate Code sections 21360 through 21392 create specific legal presumptions designed to address exactly this scenario: when a person in a position of trust, such as a caregiver or a new advisor who appeared late in the decedent’s life, suddenly receives a substantial benefit under a will executed shortly before death, the law presumes that transfer may have resulted from fraud or undue influence, and the burden shifts to that beneficiary to prove otherwise. That statutory presumption is a powerful tool, and we use it in appropriate cases.

Indicators of undue influence in a California will include the sudden appearance of a new advisor or companion, the rewriting of a long-standing estate plan in a short amount of time, the exclusion of people who had been lifelong beneficiaries, and the separation of the elder from close family members. When those facts align with a period of cognitive decline, the story starts to take shape. It is our duty to document it with enough forensic precision to meet the legal requirements of the court.

The 120-Day Deadline to Contest a Will

California law gives interested parties 120 days from the date a will is admitted to probate to file a formal will contest. That deadline is statutory and largely unforgiving. Missing it means losing the right to challenge the document, regardless of how compelling the underlying facts may be. We have spoken with families who spent months trying to gather information on their own, watching the clock run without realizing it, and by the time they retained counsel, the window had closed.

The 120-day deadline is one of the most important reasons why early consultation with a probate litigation attorney matters. You do not need to have a complete evidentiary case before you file. But you do need to act within the statutory window, and you need to understand that the clock begins from the date of admission, not from the date you first suspected something was wrong. If the story behind the estate plan change does not add up, do not let that deadline pass while you are still trying to figure out where to start.

Removing an Executor or Administrator for Misconduct

An estate’s personal representative bears a great deal of legal responsibility. Being a fiduciary, they have a legal duty to the beneficiaries of the estate rather than to themselves or any other party. California law offers a way to remove an executor or administrator who violates this obligation, surcharge them for losses incurred, and, in extreme circumstances, pursue both civil and criminal remedies.

We distinguish here between probate executors and trust fiduciaries because their procedural frameworks differ. An executor operates under probate court supervision, while a trustee managing a living trust operates under the California Probate Code’s trust administration provisions. Both owe fiduciary duties to their beneficiaries, but the tools for holding them accountable differ, and our trust litigation practice addresses the trustee side of that equation separately.

Identifying Probate Fraud and Financial Elder Abuse

Probate fraud can take many different forms, but the most common ones include the transfer or concealment of assets prior to or during administration, the submission of a forged or fraudulently induced will, the misappropriation of estate funds by a personal representative handling the estate as a personal account, and the use of beneficiary designation changes or joint accounts to completely divert assets outside the estate. That last category is particularly worth understanding. When a family member or caregiver persuades an elder to add them to a joint account with right of survivorship, those funds can pass directly to that person at death, bypassing the probate estate and any will that might have directed them elsewhere.

Financial elder abuse receives specialized treatment under California law. The state’s Public Guardian has statutory authority, pursuant to California Probate Code sections 2950 and following, to take possession of an elder’s assets through a Certificate of Authority when financial abuse of a mentally impaired elder is suspected, requiring financial institutions to cooperate with that seizure. Beyond that administrative remedy, California’s forgery provisions carry criminal penalties of up to three years in prison and $10,000 in fines, and civil remedies can result in the recovery of stolen assets plus additional damages.

Census Bureau projections indicate that by 2030, people older than 65 may, for the first time, outnumber children younger than 18, representing a substantial and growing share of the U.S. population. But as we have repeatedly emphasized to clients, estate-related fraud can strike anyone, regardless of age. Adult children, co-beneficiaries, and even co-trustees can all find themselves the victims of fraudulent conduct in estate administration.

Demanding a Formal Fiduciary Accounting

One of the first things we do in cases involving a suspicious executor or trustee is demand a formal accounting. Under California law, beneficiaries have the right to an accounting that documents all assets received, all disbursements made, all gains and losses, and the current status of estate property. An executor or trustee who refuses to provide that accounting, unreasonably delays it, or submits one that is incomplete or internally inconsistent is not merely being uncooperative. That conduct is itself actionable as a breach of fiduciary duty.

At this point, forensic accountants are extremely helpful. We collaborate with certified forensic accountants who are capable of tracking down commingled funds, spotting differences between reported and real asset values, reconstructing transaction histories from tax and bank records, and pointing out withdrawal patterns that don’t match proper estate administration. When an executor has been using the estate as a personal piggy bank, these forensic records form the basis of a surcharge claim. We suspect more than just fraud in these circumstances. We map it out.

Handling Estates Without a Will (Intestate Succession)

When someone dies without a valid will in California, their estate passes through intestate succession, meaning state law determines who inherits and in what proportions. California’s intestacy scheme follows a strict hierarchy, and while it reflects a common-sense understanding of family relationships, it does not necessarily reflect what the decedent would have chosen, and it can produce unexpected results in blended families, unmarried partnerships, and estates with complex asset structures. The risks of dying without a valid plan in place are substantial, and the resources available through thoughtful estate planning exist precisely to prevent the state from making those decisions by default.

California Community Property Distribution Rules

Since California is a community property state, assets acquired during a marriage are typically owned equally by both partners. When a spouse passes away intestate, the surviving spouse inherits half of the decedent’s community property outright in addition to a portion of the decedent’s separate property, which is determined by the number of surviving siblings, parents, or children. If the decedent had one child, the surviving spouse and that child each receive half of the separate property. With two or more children, the surviving spouse receives one-third, and the children divide the remaining two-thirds equally.

When a blended family is involved, and the decedent had children from a previous relationship, these rules may cause actual hardship in families where the decedent intended a different distribution. Regardless of the decedent’s decades-long relationship with stepchildren, the surviving spouse inherits community property, potentially leaving them with little to nothing. According to California intestacy law, that result is perfectly acceptable. Additionally, it can be completely avoided with a well-executed estate plan.

Small Estate Affidavits & Alternatives to Probate

A complete probate process is not necessary for all California estates. A successor may be able to collect assets under California Probate Code section 13100 using a small estate affidavit if the gross value of a decedent’s personal property does not exceed $184,500 (the current threshold, periodically adjusted for inflation), without initiating a formal probate case. When the estate satisfies specific requirements, real property can also be transferred through a streamlined process.

There are several ways to transfer assets completely outside of probate, including living trusts, joint tenancy agreements, payable-on-death account designations, and beneficiary designations on retirement accounts and life insurance policies. There are benefits, risks, and planning considerations associated with each of these. The rules of intestate succession will determine who inherits what in the event that none of those structures are in place and the estate exceeds the small estate threshold, necessitating a full probate proceeding.

The Financial Reality of Probate Litigation

Families considering whether to pursue probate litigation deserve an honest conversation about what it costs and what it delivers. We have that conversation at the outset with every client, because the worst outcome in estate litigation is not losing the case. The worst outcome is spending more on the fight than the inheritance was worth.

Attorney Fees, Contingency Cases, and Estate Costs

The size and complexity of the estate, the number of parties, the level of opposition, and whether the case is settled through negotiation or goes to a contested hearing all have a substantial impact on the cost of probate litigation in California. 300 to 800 attorney-hours may be needed for cases involving substantial forensic accounting work, numerous depositions, and expert testimony. That math is important at the hourly rates that seasoned probate litigators charge.

Many strong will contest and beneficiary fraud cases are handled on a contingency fee basis, meaning our firm is compensated from the recovery rather than through hourly billing, and the client pays no attorney fees unless there is a financial result. Whether a case is appropriate for contingency representation depends on the strength of the claim and the size of the potential recovery relative to the anticipated litigation cost. We assess that honestly in every initial consultation.

What we tell clients without hesitation is that delay is its own form of financial risk. Drawn-out litigation that could have been resolved through early, aggressive intervention can consume a substantial share of an estate’s total value before a single dollar reaches a rightful heir. When assets are being dissipated by a bad-faith executor, every month without intervention is a month of losses that become harder to recover. Early action, including subpoenaing bank records, petitioning for formal accountings, and in appropriate cases, seeking court orders to freeze suspicious transactions, is not just strategically sound. It is economically necessary.

The clear and convincing evidence standard, which is lower than the beyond a reasonable doubt standard used in criminal proceedings and higher than the preponderance of evidence threshold used in the majority of civil cases, must be met in order to prove probate fraud in California. This entails providing proof that raises the likelihood of fraud rather than just raising suspicions. Cases start with suspicion. They are won by evidence. Practically speaking, this means that having a skilled probate fraud lawyer who creates the forensic record early on is not a luxury. Given that evidentiary standard, professional representation is the difference between a case that succeeds and one that does not.

Families who are dealing with an unaccountable executor, a suspicious estate change, or an inheritance that has just vanished should receive both aggressive representation and honest advice. We have worked through cases like these for decades, and we know that there is more at risk than just money. It is the culmination of a person’s life and the connections they made along the way. Don’t wait for the time to feel right if the circumstances surrounding your loved one’s estate plan modification don’t add up. The 120-day window to contest a will in California does not stop for uncertainty, and the assets at stake do not pause while a family gathers itself. Contact Hackard Law for a confidential case evaluation when you are ready to understand your options.