Fiduciary litigation is a civil lawsuit brought against someone who was legally bound to manage another person’s money, property, or decisions and broke that trust. The cases most often involve trustees, estate executors, agents under a power of attorney, guardians, and corporate officers. To win, you have to prove a specific duty was breached, file in the right court within the limitations period, and build the case on financial records the fiduciary was supposed to be keeping. Courts can remove the fiduciary, order them to repay losses from their personal assets, impose a constructive trust on property they took, and in some jurisdictions award punitive damages.
What You Have to Prove
Every fiduciary case turns on which specific duty was broken. The duty controls what evidence you need and what the court can do about it.
Duty of Loyalty
Loyalty is the backbone. Under the Uniform Trust Code, a trustee must administer the trust solely in the interests of the beneficiaries.1Uniform Trust Code. Uniform Trust Code – Section: Duty of Loyalty Self-dealing is the most common breach: buying trust property at a discount, routing trust business to a company the fiduciary owns, or pledging trust assets as collateral for a personal loan. Corporate directors carry a parallel obligation to act in good faith and in a manner they reasonably believe to be in the best interests of the corporation.2LexisNexis. Model Business Corporation Act 3rd Edition – Section 8.30
Duty of Care and Prudent Investment
A fiduciary has to manage assets the way a reasonable person in the same position would. For trustees and investment managers, the prudent investor rule layers on a specific obligation to diversify so one bad bet cannot wipe out the portfolio. Concentrating a trust in a single stock or speculative venture is a textbook violation. Courts judge these calls on what the fiduciary knew or should have known at the time, not just how things turned out.
Commingling, Accounting, and Impartiality
Commingling happens when a fiduciary mixes personal money with trust or estate funds so that no one can tell what belongs to whom. It almost always travels with another red flag: refusal to provide an accounting. Beneficiaries have a right to a clear record of every dollar in, every dollar out, and what remains. Stonewalling that request usually signals a deeper problem. When a trust has more than one beneficiary, the duty of impartiality bars the trustee from quietly favoring one over another.
Who Can File and Who Gets Sued
You need legal standing, meaning a direct financial interest in the outcome. The usual plaintiffs are trust beneficiaries, heirs of an estate, wards under a guardian’s care, and shareholders claiming corporate officers looted the company. Each relationship creates a recognized right to hold the fiduciary accountable.
Remainder beneficiaries sit in a harder spot. If you are set to inherit trust assets after a current beneficiary dies, your standing is limited while that person is alive. As long as the trustee is following the trust creator’s instructions and meeting duties to the current beneficiary, you generally have no independent claim. After the trust creator or life beneficiary dies, you can pursue claims for breaches that damaged your future interest.
On the other side of the caption, defendants include trustees, executors, corporate officers, guardians, and agents operating under a power of attorney. The court measures their conduct against the specific legal duties attached to the role.
When You Have to File
Every fiduciary claim has a deadline, and missing it ends the case no matter how strong the evidence is. Most states set the statute of limitations for breach of fiduciary duty between two and six years, depending on the type of relationship and the nature of the breach. For claims involving employee benefit plans governed by ERISA, federal law generally requires filing within six years of the last breach or the last date the fiduciary could have corrected it.
The real question is when the clock starts. Under the discovery rule, the limitations period does not begin until you knew or reasonably should have known about the breach. If a trustee buried a self-dealing transaction inside complex account statements, the clock may not run until you spotted it or encountered something that should have prompted a closer look. Once you have reason to suspect a problem, courts expect you to act with reasonable diligence. They will not rescue plaintiffs who ignored obvious warning signs.
When a fiduciary actively hides misconduct, the doctrine of fraudulent concealment can pause the limitations period. The standard is especially strong in the fiduciary context: because the fiduciary already owes you a duty of candor, silence about wrongdoing can itself count as concealment. Tolling ends once you discover or should have discovered the underlying facts. The plaintiff bears the burden of justifying a late filing, so document every step of the investigation from the moment suspicion first arises.
Building the Evidence
These cases live or die on paper. Start with the governing instrument that created the relationship: the will, trust agreement, or power of attorney. That document defines what the fiduciary was authorized to do and where their authority ran out. Every alleged violation gets measured against those terms.
From there, pull every financial record you can reach. Bank statements, brokerage reports, tax returns, and receipts show how money actually moved. Request formal accountings that break down each transaction, including management fees and administrative expenses. If the fiduciary stalls, send a written demand requiring them to produce verified records under oath. Comparing the money trail against the governing document is where unauthorized transfers, missing assets, and suspicious patterns become visible.
When gaps remain, file a petition for accounting with the court. The petition identifies the fiduciary, the date the relationship began, and the periods where records are missing or inadequate. A court order compelling an accounting forces disclosure and creates evidence you can use in the lawsuit. Many cases gain real traction at this stage, because a fiduciary who has been hiding transactions rarely has a clean explanation once a judge demands the numbers.
Digital Assets
Nearly every state has adopted the Revised Uniform Fiduciary Access to Digital Assets Act, which governs how fiduciaries reach a person’s email, social media, cryptocurrency wallets, and other online accounts. If you suspect assets have been moved into digital wallets or into accounts that never appear on traditional bank statements, flag it with your attorney early. Pulling that information after the fact takes time and often requires separate proceedings against each platform.
Where the Case Is Filed and How It Moves
The lawsuit begins when you file a complaint or petition in the court with jurisdiction over the relationship. Probate courts handle most disputes involving wills and trusts. General civil courts hear corporate fiduciary claims and power-of-attorney disputes. After filing, the fiduciary has to receive formal notice through service of process. Federal rules allow any person at least 18 years old and not a party to the case to deliver the papers.3Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons A professional process server is not required, but many plaintiffs use one to lock in proper documentation.
The defendant then has to respond. In federal court, the standard deadline is 21 days after service.4Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections State deadlines vary but tend to fall in a similar range. Both sides then enter discovery, exchanging documents, taking depositions, and submitting written questions. Discovery in these cases is often contentious because the records the fiduciary was supposed to maintain are frequently the central evidence in dispute.
Not every case reaches trial. Many probate courts can order the parties into mediation, and some local rules require it before trial. Nobody is forced to settle, but mediation resolves a significant share of fiduciary disputes faster and at lower cost than a full trial. Some trust documents also contain mandatory arbitration clauses. Whether those clauses can bind beneficiaries is an unsettled area that varies by state: several states have passed statutes allowing trust arbitration clauses to bind beneficiaries, while others remain skeptical because the beneficiary never signed the trust. If the trust you are dealing with has an arbitration clause, have a lawyer evaluate whether it is enforceable in your jurisdiction before assuming the courthouse is off limits.
Remedies a Court Can Order
Courts have broad authority to repair a fiduciary breach and protect what is left. The Uniform Trust Code lists at least ten categories of remedies, and a judge can combine them in a single order depending on how bad the conduct was.
Removal and Suspension
If the fiduciary is an ongoing threat, a court can suspend or permanently remove them and appoint a replacement. This is usually the first thing a beneficiary asks for when misconduct is still happening. Courts can also appoint a special fiduciary on a temporary basis to take possession of the assets while the case plays out.
Surcharge
A surcharge is a personal money judgment against the fiduciary requiring them to pay back the trust or estate for the losses they caused. The amount can include lost principal, any profits the fiduciary improperly gained, and interest set by state statute. Courts can also reduce or deny the fiduciary’s compensation as a separate penalty. The surcharge comes out of the fiduciary’s own assets, not the trust.
Constructive Trusts and Injunctions
When a fiduciary moved property to themselves or a third party, a court can impose a constructive trust on the asset. The remedy effectively declares that the wrongdoer is holding property they should not have and orders it returned. It works only when the breach produced an identifiable asset that can be traced. Courts can also freeze accounts through an injunction or void unauthorized transactions outright.
Punitive Damages
For particularly egregious conduct, courts in many states can add punitive damages on top of compensatory recovery. The threshold is higher than an ordinary breach: plaintiffs typically have to prove by clear and convincing evidence that the fiduciary acted with fraud, malice, or willful disregard of their obligations. Punitive damages are paid from the fiduciary’s personal assets. Not every state allows them in fiduciary cases, so availability depends on where the suit is filed.
Attorney Fee Recovery
The default American rule is that each side pays its own lawyers. Fiduciary litigation offers two important exceptions. Under the common fund doctrine, when a beneficiary’s lawsuit recovers money that benefits all beneficiaries of a trust or estate, a court can order attorney fees paid from the recovered assets so passive beneficiaries do not get a free ride. Many state statutes also authorize fee-shifting in trust and estate disputes, allowing the court to order the breaching fiduciary to cover the plaintiff’s reasonable legal costs. Courts overseeing trusts, estates, and guardianships have inherent authority to review and approve fees charged to these accounts.
When Co-Fiduciaries Are on the Hook
Serving as a co-trustee is not a license to look the other way. Under federal law governing employee benefit plans, a co-fiduciary is personally liable in three situations: knowingly participating in or concealing another fiduciary’s breach, failing to perform their own duties in a way that enabled the breach, or learning of a breach and not making reasonable efforts to fix it. Many state trust codes use a similar framework, giving each trustee an affirmative duty to prevent the others from breaching.5Office of the Law Revision Counsel. 29 USC 1105 – Liability for Breach of Co-Fiduciary
There is one notable exception. If the trust document permits specific duties to be divided among co-trustees and the allocation is documented, a trustee is generally not liable for failures in the other’s assigned area. That protection falls apart if the non-breaching trustee was negligent in setting up or supervising the delegation.
What It Costs and How Recoveries Are Taxed
These cases are expensive on both sides. Attorney fees are the largest line item, with experienced trust and estate litigators typically charging $300 to $500 per hour. Complex matters often require forensic accountants to reconstruct financial records, adding another layer at comparable hourly rates. A straightforward accounting dispute might resolve for $10,000 to $25,000; a contested case that runs through full discovery and trial can exceed $100,000. Court filing fees vary by jurisdiction and the size of the estate.
Fiduciary bonds add another potential cost. Many probate courts require trustees and executors to post a surety bond to protect beneficiaries against future losses. Annual premiums generally run from 0.5% to several percent of the bond amount, depending on the estate’s size and the fiduciary’s creditworthiness. A trust instrument sometimes waives the bond requirement, but a court can override that waiver if a beneficiary shows the protection is needed.
Winning does not end the financial picture. The IRS treats most settlement payments and court judgments as taxable income unless a specific exclusion applies.6Internal Revenue Service. Tax Implications of Settlements and Judgments The tax code defines gross income as all income from whatever source derived.7Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined The question for any recovery is what the payment was meant to replace. Damages for physical injuries or physical sickness are generally excluded. Most fiduciary recoveries compensate for financial losses such as mismanaged investments or stolen assets, and those are fully taxable. Punitive damages are taxable regardless of the underlying claim. When a settlement agreement is silent, the IRS looks at the intent behind the payment to classify it. Expect the paying party to issue a Form 1099 unless a recognized exception applies, and work with a tax professional on settlement language before signing anything.