What is a fiduciary?
A fiduciary is a person or organization that must act in someone else’s best interest. The word comes from the Latin for trust. If you hire or rely on a fiduciary, you expect them to put your needs above their own.
In simple terms, a fiduciary has more than a duty. They have a legal and ethical obligation to protect you.
Common examples
- Trustees who manage a trust for beneficiaries
- Corporate directors who make decisions for shareholders
- Lawyers representing clients
- Financial advisors who manage client money, when they are legally fiduciaries
- Executors of an estate
- Guardians for minors or people who cannot care for themselves
Not every lawyer or advisor is a fiduciary in every situation. The role depends on the relationship and the law.
Main duties of a fiduciary
Fiduciary duties are straightforward. They usually include:
- Duty of loyalty: Put the client first. No secret self-dealing.
- Duty of care: Make smart, informed decisions.
- Duty to disclose: Tell the client about conflicts and important facts.
- Duty of confidentiality: Keep client information private.
- Duty of obedience: Follow the terms of the agreement or the law.
These duties are stronger than the normal duties most people have in business. A fiduciary cannot profit at the expense of the client without clear permission.
Fiduciary vs suitability or agent
A common confusion is between fiduciary duty and suitability. Suitability is the lower standard. A broker might only need to recommend products that are reasonable for a client. A fiduciary must recommend what is best for the client.
An agent acts on behalf of a principal. A fiduciary is a kind of agent with higher duties. All fiduciaries are agents, but not all agents are fiduciaries.
How to tell if someone is your fiduciary
Ask direct questions:
- Are you required to act as my fiduciary?
- Do you get paid any commissions or referral fees?
- Will you put my interests before your own?
Look at contracts and law. For example, registered investment advisors are fiduciaries under U.S. law. Brokers may be held to a suitability standard unless they also act as an advisor.
Signs a breach of fiduciary duty
A fiduciary may have breached duty if they:
- Hide fees or fail to disclose conflicts
- Use your assets for their own benefit without your consent
- Make careless or uninformed choices
- Fail to provide records or lie about actions
If you suspect a breach, document what happened and save communications.
What to do if your fiduciary fails you
- Ask for a full explanation and written records.
- File a complaint with the relevant regulator. For financial issues in the U.S. this could be the Securities and Exchange Commission, Financial Industry Regulatory Authority, or state regulators.
- Talk to a lawyer who handles fiduciary duty cases.
- Consider mediation, arbitration, or court if needed.
Time limits apply to claims. Act quickly.
Practical tips when choosing a fiduciary
- Get it in writing. Make sure the contract states fiduciary duty if that is what you want.
- Ask about fees and conflicts up front.
- Check credentials and disciplinary history.
- Use plain language. If the terms sound confusing, ask for clarity.
- Prefer fee-only advisors when possible. They often have fewer conflicts than commission-based advisors.
Why it matters
Fiduciaries hold power over someone else’s money, health, or legal rights. When that power is used well, it protects those who are vulnerable. When misused, it causes real harm. Knowing what a fiduciary is helps you choose the right people and protect yourself.
If you handle other people’s affairs, remember this: the role is about trust. It is not a chance to profit at someone else’s expense.
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