What Is a Fiduciary?

June 22, 2026
Laura Holbrook

A fiduciary is a person or entity entrusted to manage assets or interests on behalf of someone else, with a legal and ethical obligation to act in that person’s best interest. In everyday terms, spelled out on Investopedia, a fiduciary is someone who must put another’s needs ahead of their own.

In estate planning and probate law, fiduciaries play a crucial role in ensuring that assets are protected, distributed properly, and managed responsibly. At J. Nichols Law, PLLC, in Beaumont, TX, we frequently advise clients on how to choose, work with, or serve as a fiduciary.

What Does It Mean to Be a Fiduciary?

A fiduciary is bound by the highest duty of care and loyalty in managing someone else’s money, property, or legal matters. According to the Consumer Financial Protection Bureau, a fiduciary must always act in the best interest of the person or entity they represent, avoid conflicts of interest, and follow the terms of any legal documents or instructions.

In Texas estate planning, common fiduciary roles include executors, trustees, guardians, and agents under powers of attorney. Each role comes with specific responsibilities, but all share the central principle: putting someone else’s needs first.

Why Is the Fiduciary Duty So Important?

According to the Cornell Law School Legal Information Institute, the word ‘fiduciary’ is derived from the Latin word for ‘trust.’ Fiduciaries have access to sensitive information and significant control over property or finances. Because of this, the law requires them to be honest and prudent and to avoid self-dealing.

Under Texas law (Estates Code Section 404), if a fiduciary breaches their duty, they can be held legally liable and even removed from their role.

What’s the Difference Between an Executor and a Trustee?

Both executors and trustees are fiduciaries, but their responsibilities differ in important ways:

  • An executor is appointed in a will to settle an estate after someone’s death. This includes gathering assets, paying debts and taxes, and distributing what’s left to beneficiaries. The executor’s role ends once the estate is settled.
  • A trustee manages assets held in a trust, often for many years. Trustees follow the instructions in a trust document, invest assets prudently, and distribute income or property to beneficiaries as directed. Trustees may serve for as long as the trust exists.

Both executors and trustees are legally required to act in the best interests of the people or entities they serve. They must avoid conflicts, keep clear records, and never use assets for personal gain.

Examples of Fiduciary Roles in Estate Planning & Probate

Fiduciary duties come up in many situations:

  • Executor: Follows a will’s instructions, pays debts, files taxes, and distributes assets.
  • Trustee: Invests and manages trust assets for beneficiaries, such as minors or charities.
  • Power of Attorney Agent: Handles finances or health care decisions for someone unable to do so themselves.
  • Guardian: Manages the affairs of a minor or incapacitated adult.

Each role has unique responsibilities, but the uniting thread is that a fiduciary cannot profit from their position at the expense of those they serve.

How Can J. Nichols Law, PLLC, Help You with Fiduciary Matters?

At J. Nichols Law, PLLC, our team is led by Jennifer Nichols, who is Board Certified by the Texas Board of Legal Specialization in Estate Planning and Probate, and a licensed Certified Public Accountant. This advanced level of legal and financial expertise means we have a deep understanding of fiduciary law and the practical realities of serving in fiduciary roles.

We regularly:

  • Advise clients on selecting trustworthy fiduciaries
  • Draft wills and trusts that outline clear fiduciary duties
  • Guide executors and trustees through every step of the process
  • Help resolve disputes or questions about fiduciary conduct

Our Beaumont-based firm combines technical knowledge with a practical, client-centered approach, ensuring that fiduciaries understand their obligations and that families’ interests are protected.

Frequently Asked Questions About Fiduciaries

What is the biggest mistake a fiduciary can make?

Failing to keep beneficiaries informed or using assets for personal benefit are common missteps. Transparency and acting solely for others’ benefit are essential.

Can a fiduciary be held personally liable?

Yes. If a fiduciary breaches their duties, they could be required to repay losses, face removal, or even be sued by beneficiaries.

How do I know if someone is a fiduciary?

If someone is managing property, money, or legal matters for someone else under legal authority (such as a will, trust, or power of attorney), they are likely acting as a fiduciary.

Do fiduciaries get paid?

Often, yes. Executors and trustees can receive reasonable compensation, but they must follow state law and the terms of the will or trust.

Can I change my fiduciary if I’m unhappy?

Usually, yes. If you’re setting up a will or trust, you can name a new fiduciary. If an existing fiduciary is not acting properly, beneficiaries may be able to ask a court to intervene.

Fiduciaries are trusted to act with honesty, loyalty, and care when managing another’s affairs. Whether serving as an executor, trustee, or agent, a fiduciary must always put others’ interests first. Choosing the right fiduciary and understanding their duties are crucial steps in any estate plan.

If you have questions about fiduciary duties, need help selecting a fiduciary, or want guidance on your estate plan, contact J. Nichols Law, PLLC, in Beaumont, TX. Jennifer Nichols is Board Certified in Estate Planning and Probate and a licensed CPA—your assurance of trusted, knowledgeable counsel.

Schedule a consultation today to protect your legacy and your loved ones’ future.