INSIGHT

How Mistakes During Trust Administration Lead to Litigation 

Natalie Keam, Cindy Schoelen • April 21, 2026

Services: Fiduciary Accounting

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Trust administration may appear straightforward on paper, but anyone who has served as a trustee, or who has watched a trust dispute unfold within a family, knows the reality can be far more complicated. The responsibilities placed on a trustee are significant, and even well-intentioned decisions can create legal exposure when proper procedures are not followed. Understanding where trust administration mistakes commonly occur is a critical step toward protecting beneficiaries, minimizing trustee liability, and preserving the legacy of a grantor intended to leave behind. 

What Is Trust Administration? 

Trust administration is the process of managing and distributing trust assets in accordance with the trust document and applicable state law after the grantor’s incapacity or death. Whether the trust is revocable or irrevocable, the trustee takes on a fiduciary duty to act in the best interests of all beneficiaries. That duty is not a formality. It carries real legal weight, and a breach can lead to personal liability, removal of the trustee, court intervention, and costly litigation. 

5 Common Trust Administration Mistakes That Trigger Disputes 

Even the most diligent trustees can encounter problems when they lack experience with fiduciary accounting, trust law, or tax compliance. The following are some of the most common trust administration errors that lead to beneficiary disputes and, in many cases, courtroom battles. 

1. Failure To Notify Beneficiaries 

Most states impose statutory requirements obligating a trustee to notify beneficiaries promptly after a trust becomes irrevocable, typically upon the grantor’s death. Skipping this step, or delaying it without cause, can raise suspicion among beneficiaries and, in many cases, violates statutory requirements. When beneficiaries feel they are being kept in the dark, disputes tend to follow. 

2. Inadequate Record-Keeping and Accounting 

A trustee has a duty to maintain detailed and accurate records and provide regular accountings to beneficiaries. This includes tracking all receipts, disbursements, investment activity, and distributions. Sloppy bookkeeping, commingling trust assets with personal funds, or failing to file required fiduciary accountings can give beneficiaries grounds to petition a court for a formal accounting or to remove the trustee entirely. 

3. Misallocating Principal and Income 

One of the most technically demanding aspects of trust administration is correctly allocating receipts and expenses between principal and income accounts. California’s Uniform Fiduciary Income and Principal Act (UFIPA), which replaced the former Uniform Principal and Income Act effective January 1, 2024, sets the current standard for how trustees must handle these allocations.  

When trustees misclassify capital gains as distributable income or fail to follow UFIPA’s requirements, it can result in one class of beneficiaries receiving more than they are entitled to at the expense of another. These allocation errors can be a frequent source of beneficiary conflict and fiduciary litigation. Self-Dealing and Conflicts of Interest 

Trustees who use trust assets for personal benefit or favor themselves or certain beneficiaries in ways not authorized by the trust document are engaging in self-dealing. This is one of the most serious breaches of fiduciary duty a trustee can commit. Even the appearance of a conflict of interest can erode trust among beneficiaries and invite legal challenges. 

4. Imprudent Investment Decisions 

Under the Uniform Prudent Investor Act, trustees are held to a standard of care when investing in trust assets. This means diversifying the portfolio, considering the needs of both current income beneficiaries and remainder beneficiaries, and avoiding speculative decisions. Concentrating assets in a single investment, failing to rebalance, or making investment changes without proper documentation can all expose a trustee to liability. 

5. Missing Tax Filing Deadlines 

Trust administration has significant tax implications. Trustees are responsible for filing the trust’s income tax returns, issuing Schedule K-1s to beneficiaries, and, in some cases, handling estate tax returns. Missing deadlines, filing incorrectly, or failing to make required distributions to reduce the trust’s tax burden can create financial harm that beneficiaries may seek to recover through litigation. 

Why Trust Administration Mistakes Are So Costly 

Trust disputes are not just expensive in terms of legal fees. They can fracture family relationships, delay distributions for years, and erode the very assets a grantor intended to protect and pass on. In contested cases, courts can surcharge a trustee, meaning they can be held personally liable for losses caused by their breach of duty. In severe cases, a court may remove the trustee altogether. 

The stakes are particularly high for high-net-worth individuals and families, where trust assets may include complex holdings such as real estate, business interests, closely held securities, or multi-generational wealth structures. 

How BPM Helps Trustees Through Proper Trust Administration 

Proper trust administration requires careful attention to fiduciary accounting, tax compliance, and the specific terms of each trust document. BPM’s professionals work alongside trustees, estate planning attorneys, and families to help keep trust administration on track from day one. From accurate principal and income allocations to timely fiduciary accountings, BPM’s accounting and private client services professionals bring the structured support that reduces risk and helps protect trustees from personal liability. 

To learn more about how BPM’s fiduciary accounting and private client services can support your trust administration needs, contact BPM today.