Suing a Missouri Trustee for Breach of Fiduciary Duty and Mismanagement

Current as of: October 1, 2026 Will Contests & Estate Litigation Missouri
Under the Missouri Uniform Trust Code, trustees are bound by strict fiduciary duties. If a trustee steals, mismanages investments, or unreasonably refuses to distribute funds, beneficiaries can sue in probate court to have them removed and force them to repay the trust.

When a loved one creates a trust, they place immense faith in the appointed trustee to manage their wealth and care for their beneficiaries. Unfortunately, trustees sometimes abuse this power. Whether due to sheer incompetence, arrogance, or outright theft, a bad trustee can drain a family's legacy in a matter of months. If you are a beneficiary in Missouri dealing with a rogue trustee, the law provides powerful tools to hold them accountable and protect your inheritance.

The Missouri Uniform Trust Code (MUTC)

Trust administration in the state is governed by the Missouri Uniform Trust Code (MUTC), found in Mo. Rev. Stat. § 456.1-101. This code imposes a rigid set of rules known as 'fiduciary duties.' A fiduciary duty is the highest standard of care in the legal system, meaning the trustee must always put the beneficiaries' interests above their own. When a trustee violates these rules, it is called a breach of fiduciary duty.

Co-Mingling Trust Funds

One of the most common breaches is co-mingling. A trustee must keep trust money entirely separate from their personal bank accounts. If a trustee in Columbia deposits rent from a trust-owned property into their personal checking account-even if they intend to move it later-they have breached their duty. Courts look very harshly at sloppy accounting practices.

Failing to Diversify and Mismanagement

Under Mo. Rev. Stat. § 456.8-804, a trustee must administer the trust as a prudent person would, exercising reasonable care, skill, and caution. This includes the duty to diversify investments. If a trustee takes the entire trust fund and invests it in a single highly risky startup, or leaves a million dollars sitting in a checking account losing value to inflation, they can be held personally liable for the financial losses suffered by the trust.

Self-Dealing and Conflicts of Interest

Self-dealing is strictly prohibited under Mo. Rev. Stat. § 456.8-802. A trustee cannot buy property from the trust, sell their own property to the trust, or loan trust money to themselves without express authorization. For example, if the trustee sells the deceased's family home to themselves at a massive discount, this is a severe conflict of interest and a blatant breach of loyalty.

Unreasonably Refusing to Distribute Funds

While trustees often have discretion over when to pay beneficiaries, they cannot withhold funds purely out of spite or to exert control. If the trust document states that a beneficiary should receive funds for their 'health, education, maintenance, and support,' and the trustee refuses to pay for a beneficiary's necessary medical bills, the court can intervene to force the distribution.

Legal Remedies: Removal and Surcharges

If you prove a breach, Missouri law provides aggressive remedies under Mo. Rev. Stat. § 456.10-1001. The court can suspend the trustee's powers, formally remove them from their position, and appoint a neutral third party. More importantly, the court can order a 'surcharge.' A surcharge is a financial penalty forcing the trustee to pay out of their own personal pocket to reimburse the trust for any money lost due to their misconduct. The precedent Betty G. Weldon Revocable Trust v. Weldon, 231 S.W.3d 158 (MO Court of Appeals 2007) illustrates how courts will aggressively penalize trustees who engage in self-dealing and disregard the trust's instructions.

Step-by-Step Process to Sue a Bad Trustee

  • Step 1: Demand an Accounting. Have a lawyer from our directory send a formal legal demand for a full financial accounting. The trustee is legally required to provide this to qualified beneficiaries.
  • Step 2: Review for Discrepancies. Work with your attorney to analyze the accounting for unauthorized fees, missing assets, or poor investments.
  • Step 3: File the Lawsuit. Your attorney will file a formal Petition for Removal of Trustee and Surcharge pursuant to Mo. Rev. Stat. § 456.7-706 and Mo. Rev. Stat. § 456.10-1001 in the appropriate venue, such as the Boone County Circuit Court, Probate Division, Columbia.
  • Step 4: Request a Temporary Injunction. If the trustee is actively stealing money, your lawyer can ask the judge to immediately freeze the trust accounts until the trial concludes.

Costs of Trust Litigation

Suing a trustee usually requires paying a probate litigator an hourly rate of $250 to $450, with an initial retainer between $5,000 and $15,000. Additionally, you may need to hire a forensic accountant (costing $3,000 to $8,000) to trace stolen funds or prove investment mismanagement. However, under Missouri trust law, if you are successful in proving a serious breach, the judge has the discretion to order the bad trustee to pay your attorney's fees.

How Long Does Trust Litigation Take?

Removing a trustee is a full-blown civil lawsuit. Obtaining financial records, deposing the trustee, and presenting the evidence to a judge generally takes between 9 to 18 months. If an emergency injunction is granted, however, the bleeding of the trust can be stopped within a matter of weeks.

Frequently Asked Questions (FAQ)

Can a trustee pay their own defense lawyers using trust money?

Generally, a trustee can use trust funds to defend themselves. However, if a court ultimately finds that the trustee committed a breach of fiduciary duty, the trustee can be ordered to repay those legal fees back to the trust out of their own personal funds.

Does the trustee have to show me the trust document?

Yes. Under the Missouri Uniform Trust Code, a trustee has a legal obligation to provide a copy of the trust instrument to any qualified beneficiary who requests it, so they can understand their rights.

Can we remove a trustee just because we don't like them?

Not usually. Disliking a trustee is not enough to have them removed by a judge. You must prove they are failing to perform their duties, mismanaging funds, or that a total breakdown in communication is severely harming the administration of the trust.

Can all the beneficiaries vote to replace the trustee?

It depends entirely on the language in the trust document. Some modern trusts contain a 'portability' or 'removal' clause that allows a majority of adult beneficiaries to fire a trustee and hire a corporate successor without going to court. Your attorney will need to review the specific document.


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