Trustee: Definition and How It Works in California

A trustee is the person or institution that holds and manages trust property for the beneficiaries, according to the terms the settlor set out in the trust document.

How it works in California

A trustee’s authority comes from the trust document itself, not from a court appointment, which is what separates the role from an executor. See how a trustee differs from an executor in California for that comparison.

A trustee owes fiduciary duties to the beneficiaries under the Probate Code, including keeping them reasonably informed (Prob. Code, § 16060), managing trust property prudently, keeping trust assets separate from personal assets, and administering the trust according to its terms rather than the trustee’s own preferences.

A trust can name one trustee or several acting together, and it can name a corporate trustee, such as a bank or trust company, instead of or alongside an individual.

Why it matters

For example, a trustee who invests trust funds the same way they invest their own money, without regard to the beneficiaries’ needs, can be personally liable for the resulting losses.

Common mistakes

New trustees sometimes treat the role as informal because a family member named them, when the legal duties are the same regardless of who holds the office.

Related terms

Part of the California estate planning glossary. For the full treatment, see Executor vs. Trustee in California.

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