Fiduciary Duty
Fiduciary duty is the highest legal standard of care in financial services, requiring that a fiduciary act solely in the best interests of their client rather than in their own interest or the interest of any third party.
The concept of fiduciary duty originates in common law and has been applied across legal relationships from estate trustees to corporate directors. In the context of financial services, it describes the obligation of a financial professional to put a client's interests above their own — including above their own financial compensation. This distinguishes fiduciaries from other financial professionals who are merely required to recommend 'suitable' products, a meaningfully lower standard.
In the U.S., registered investment advisers (RIAs) are held to a fiduciary standard under the Investment Advisers Act of 1940 and the rules of the SEC. An RIA must provide advice that is in the client's best interest, must disclose conflicts of interest, and cannot favor investments that generate higher fees for the adviser unless those choices are genuinely in the client's best interest. By contrast, broker-dealers operating under FINRA rules were historically held only to a 'suitability' standard — meaning the recommendation had to be appropriate for the client but need not be the best possible option.
The gap between fiduciary and suitability standards generated significant controversy for decades. The Department of Labor attempted to introduce a fiduciary rule for retirement accounts in 2016, but it was vacated by the courts in 2018. The SEC responded by adopting Regulation Best Interest (Reg BI) in 2019, which requires broker-dealers to act in the 'best interest' of retail customers when making investment recommendations, though critics argue it falls short of a true fiduciary standard. State securities regulators in some jurisdictions have adopted stricter state-level fiduciary rules.
For investors, the fiduciary distinction has practical consequences. When working with a fee-only registered investment adviser — who charges fees directly for advice rather than earning commissions from product sales — investors are more likely to receive unbiased recommendations. Commission-based brokers face inherent conflicts of interest: products with higher commissions may generate larger payoffs for the adviser even when lower-cost alternatives would serve the client better.
To verify whether your financial adviser is a fiduciary, ask them directly and request a written confirmation. You can also check whether they hold the Registered Investment Adviser status through the SEC's Investment Adviser Public Disclosure (IAPD) database. Certified Financial Planners (CFPs) are required to act as fiduciaries when providing financial planning services, adding another layer of consumer protection for clients who work with CFP holders.