What Is a Fiduciary, and Why Should You Care?
A fiduciary must put your interests first. A non-fiduciary does not. Here is how to tell the difference and the questions to ask.
If you walked into a doctor’s office and learned that your physician was legally allowed to prescribe you a medication that was fine for your condition but earned the doctor a bigger kickback than a cheaper, equally effective alternative, you would probably find a new doctor. That is the difference between the fiduciary standard and the suitability standard in financial advice. One requires your advisor to act in your best interest. The other requires only that the recommendation be “suitable.” The gap between those two words can cost you tens of thousands of dollars over a lifetime.
What Does Fiduciary Mean?
A fiduciary is a person or firm that is legally obligated to act in the best interest of another party. In financial services, a fiduciary advisor must put your financial interests ahead of their own. This obligation comes from the Investment Advisers Act of 1940, which established two core duties:
Duty of care. The advisor must make investment recommendations based on a thorough understanding of your financial situation, goals, risk tolerance, and time horizon. They cannot recommend a product without doing their homework.
Duty of loyalty. The advisor must either eliminate conflicts of interest or fully disclose them. If the advisor would earn more money by recommending Product A over Product B, they must either avoid that conflict entirely or tell you about it and explain why Product A is still the better choice for you.
These duties are not voluntary. They are enforced by the SEC through examinations, audits, and enforcement actions. In its fiscal year 2026 examination priorities, the SEC listed fiduciary duty compliance as its top focus area for registered investment advisers.
What Is the Suitability Standard?
The suitability standard is a lower bar. Under FINRA Rule 2111, a broker-dealer must have a reasonable basis to believe that a recommended transaction or investment strategy is suitable for the customer, based on the customer’s investment profile. That profile includes factors like age, income, net worth, and risk tolerance.
The critical difference: a suitable recommendation does not have to be the best recommendation. A broker operating under the suitability standard can recommend a mutual fund with a 5.75% front-end load and a 1.2% expense ratio when an identical index fund with no load and a 0.04% expense ratio is available, as long as the expensive fund is “suitable” for the client’s situation.
Under the fiduciary standard, that same recommendation would likely violate the advisor’s duty of care. If two products achieve the same goal and one costs significantly more, the fiduciary must recommend the cheaper option or explain exactly why the more expensive one is better for that specific client.
Who Is a Fiduciary and Who Is Not?
This is where it gets confusing, because the titles people use do not always tell you what standard they follow.
| Type | Registered With | Standard | Fiduciary? |
|---|---|---|---|
| Registered Investment Adviser (RIA) | SEC or state | Fiduciary | Yes, always |
| Investment Adviser Representative (IAR) | Works for an RIA | Fiduciary | Yes, always |
| Broker-dealer representative | FINRA | Suitability + Reg BI | Only at point of recommendation |
| Insurance agent | State insurance dept. | Varies by state | Depends on product and state |
| Dually registered advisor | SEC/FINRA | Both, depends on activity | When advising, yes. When selling, depends. |
The “dually registered” category is the most confusing. Some advisors are registered as both an investment adviser and a broker-dealer representative. When they are providing ongoing investment advice, they act as fiduciaries. When they are executing a brokerage transaction, they may operate under the Regulation Best Interest standard, which is stronger than the old suitability standard but still distinct from a full fiduciary obligation.
What Is Regulation Best Interest?
In 2019, the SEC adopted Regulation Best Interest (Reg BI), which raised the bar for broker-dealers. Under Reg BI, brokers must act in the “best interest” of retail customers when making a recommendation. They must disclose conflicts, exercise reasonable diligence, and not place their own financial interest ahead of the client’s.
Reg BI was a significant improvement over the old suitability standard. But it applies only at the point of recommendation, not on an ongoing basis. A fiduciary RIA owes you a continuous duty. A broker under Reg BI owes you a duty at the moment of the recommendation and nothing more.
Think of it this way: a fiduciary is like a doctor who monitors your health year-round. A broker under Reg BI is like a pharmacist who fills the right prescription but does not check in on you afterward.
How Much Does the Difference Cost You?
The gap between a fiduciary and a non-fiduciary is not abstract. It shows up in fees, product selection, and long-term returns.
Consider two investors, each starting with $500,000 at age 45.
Investor A works with a fee-only RIA that charges 0.75% annually and builds a portfolio of index funds with an average expense ratio of 0.05%. Total annual cost: 0.80% of assets.
Investor B works with a broker who charges no explicit advisory fee but earns commissions and places the client in actively managed funds averaging a 1.0% expense ratio, plus a one-time 3% front-end load on new investments. Effective total annual cost: roughly 1.3% of assets after accounting for the load amortized over time.
Assuming both portfolios earn 7% gross annually before fees:
| Metric | Investor A (Fiduciary RIA) | Investor B (Non-Fiduciary Broker) |
|---|---|---|
| Annual cost | 0.80% | ~1.30% |
| Portfolio at age 65 | ~$1,587,000 | ~$1,432,000 |
| Difference | -$155,000 |
That $155,000 gap comes entirely from the fee differential. Both investors owned the same types of assets and experienced the same market returns. The only difference was the cost structure, which is directly tied to the standard of care their advisor followed.
What Questions Should You Ask?
Before working with any financial professional, ask these five questions. A genuine fiduciary will answer all of them directly.
1. “Are you a fiduciary at all times?” Not “sometimes,” not “when providing financial advice.” At all times. If the answer is anything other than an unqualified yes, press further.
2. “How are you compensated?” Fee-only advisors charge a transparent fee, either a percentage of assets, an hourly rate, or a flat fee. They do not earn commissions from selling products. Fee-based advisors charge a fee but may also earn commissions, which creates potential conflicts.
3. “Are you registered as an RIA or an IAR with an RIA?” You can verify this by searching the SEC’s Investment Adviser Public Disclosure (IAPD) database. Every registered adviser’s Form ADV, which discloses fees, services, conflicts, and disciplinary history, is available for free.
4. “Will you provide a written fiduciary oath?” A fiduciary who is confident in their standard of care will put it in writing. If they will not, that tells you something.
5. “Do you receive revenue from any third party based on the products you recommend?” This catches revenue-sharing arrangements, 12b-1 fees, and other indirect compensation that may not be obvious from the fee schedule alone.
Why Does This Matter Right Now?
The SEC’s 2026 examination priorities place fiduciary duty compliance at the top of the list for investment adviser exams. Regulators are scrutinizing how advisors manage conflicts of interest, whether investment advice is genuinely suitable for clients’ objectives and risk profiles, and whether disclosures are adequate.
For investors, the lesson is straightforward: you have the right to work with someone who is legally required to put your interests first. An RIA operates under that standard by law. Not all financial professionals do. Knowing the difference before you hand over your savings is one of the most important financial decisions you will make.
If you are evaluating advisors, start by understanding what an RIA is and how to choose a financial advisor who aligns with your interests, not their own.
Ferrante Capital LLC is a registered investment adviser. Information presented is for educational purposes only and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. All investing involves risk, including the possible loss of principal.
FC and its principals may hold positions in securities or asset classes discussed in this article. This analysis is for educational purposes only and does not constitute a recommendation to buy, sell, or hold any security.
Forward-looking statements reflect Ferrante Capital’s current analysis and involve assumptions and estimates. Actual results may differ materially. Past performance is not indicative of future results.
Please consult a qualified financial professional before making investment decisions.
