Fiduciary Duty

FundamentalRegulation & Compliance2 min read

Quick Definition

A legal obligation to act in the best interest of another party, placing their interests above one's own.

Key Takeaways

  • The highest legal standard of care — acting in the best interest of another party
  • RIAs owe fiduciary duty; broker-dealers are held to Regulation Best Interest
  • Requires disclosure of conflicts of interest and avoidance of self-dealing
  • ERISA imposes fiduciary duties on retirement plan administrators
  • Key consideration when choosing between financial advisors

What Is Fiduciary Duty?

Fiduciary duty is the highest standard of care in law and finance, requiring a fiduciary to act solely in the best interest of the beneficiary or client. In the investment context, fiduciaries must provide advice that is in the client's best interest, disclose all material conflicts of interest, and avoid self-dealing. Registered Investment Advisors (RIAs) owe a fiduciary duty to their clients under the Investment Advisers Act of 1940, while broker-dealers are held to a lesser "suitability" standard (though Regulation Best Interest has narrowed this gap). ERISA imposes fiduciary duties on retirement plan administrators, and corporate directors owe fiduciary duties to shareholders. The distinction between fiduciary and non-fiduciary standards is critical for investors when choosing financial advisors.

Fiduciary Duty Example

  • 1A registered investment advisor has a fiduciary duty to recommend lower-cost index funds over higher-cost alternatives if both meet the client's objectives.
  • 2A 401(k) plan administrator breached their fiduciary duty by selecting funds with excessive fees when comparable lower-cost options were available.