What Is a Fiduciary Financial Advisor?

A fiduciary is a financial professional legally required to act in their clients' best interests. The standard comes from the Investment Advisers Act of 1940 and runs continuously throughout the advisory relationship. It's higher than the "suitability" or "best interest" rules followed by many brokers. Conflicts of interest must be disclosed in writing, in advance.

The core idea is simple: a fiduciary is legally required to act in the interest of another party. In practice, the investment version of this duty comes from Section 206 of the Investment Advisers Act, the antifraud provision. The Supreme Court read a full fiduciary duty into that section in 1963, in SEC v. Capital Gains Research Bureau. When a firm registers as an investment adviser, that registration attaches a legal obligation. Not a marketing credential. An obligation.

There are two parts. The duty of care: advice has to serve your actual situation. Generic recommendations that happen to benefit the adviser? Not enough. Then there's the duty of loyalty. Your interest comes ahead of the adviser's. Any conflict the adviser can't eliminate has to be disclosed in writing, in advance, in Form ADV Part 2A.

What does that look like in practice? A fiduciary can't recommend a product because it pays them more than the alternative. They can't hold your assets in a way that benefits the firm at your expense. They can't conceal relationships with third parties that affect their recommendations.

But here's what it doesn't mean: fiduciary duty doesn't guarantee results. Investing involves risk, and any portfolio can lose money. What the duty establishes is that the legal obligation runs to you, not to a commission schedule or a parent company. That's actually a meaningful difference.

Investment advisers registered under the Investment Advisers Act of 1940 are fiduciaries. That covers both SEC-registered and state-registered RIAs. The duty isn't limited to the moment of a trade. It runs continuously from the day the advisory agreement is signed through every portfolio decision while the account is open.

Broker-dealers and registered representatives? Different standard entirely, covered in the next section. And this matters more than most people realize, because many firms hold both registrations at once. Which standard protects you depends on which service is being performed at that moment.

Fee-only investment advisers are pure RIAs with no broker-dealer affiliation. No dual registration means no flipping into a lower standard when it's convenient. Fee-based advisers often hold both registrations: they owe fiduciary duty when acting as an adviser, and a lower standard when acting as a broker. Same person, same office, two different legal standards depending on the transaction. It's legal, and it's disclosed. But it's genuinely confusing if you assume "fiduciary" applies to everything they do. If you want to understand how each structure handles compensation, the fee-only vs. fee-based article goes deeper.

Most robo advisors are registered investment advisers under the Investment Advisers Act of 1940. That registration attaches the same fiduciary obligation it attaches to any RIA. In the legal sense, yes, robo advisors are fiduciaries.

The difference is how the duty is expressed. A licensed investment adviser evaluates your specific situation: income, time horizon, existing accounts, tax circumstances, life events. A robo advisor runs your questionnaire answers through an algorithm and places you into a model portfolio designed for a broad range of clients. The algorithm was written by humans who made choices about what to optimize for. Those choices reflect business decisions as well as client interests, and the choices are fixed once the software ships.

When your circumstances change, a human adviser can adapt. An algorithm applies the same logic it always has until the software is updated. That may be fine if your situation is straightforward. It may not be if your situation is more complex.

The practical summary: robo advisors meet the legal definition of a fiduciary. What that duty means in practice differs from what it means when a licensed individual adviser is responsible for ongoing judgment about your account. Investing involves risk, including the possible loss of principal, regardless of who or what manages the portfolio.

Regulation Best Interest (opens in new tab) (Reg BI) requires broker-dealers to act in your best interest at the time of a specific recommendation. That's a real improvement over the old "suitability" standard, which only asked whether a recommendation was appropriate, not whether it was the most appropriate option. But Reg BI isn't the same as fiduciary duty.

The biggest difference is timing. Fiduciary duty is continuous. An investment adviser owes loyalty throughout the entire advisory relationship. A conflict of interest that surfaces six months in has to be disclosed immediately. Reg BI works differently: a broker meets the standard if each recommendation, at the moment it's made, is in your best interest. Between transactions there's no ongoing duty. The protection resets to zero until the next recommendation.

Disclosure works differently too. An investment adviser files Form ADV Part 2A before the relationship begins and keeps it current. A broker discloses conflicts at the point of recommendation through Form CRS.

From the outside, a fiduciary investment adviser and a broker under Reg BI can look almost identical. Both use the phrase "best interest." The legal obligations behind those words aren't the same, and neither are the consequences when something goes wrong.

Registered investment advisers operate under the fiduciary standard from the Investment Advisers Act of 1940. They must act in your best interest on a continuous basis, disclose all material conflicts of interest in writing in Form ADV Part 2A before the relationship begins, and keep that disclosure current. The duty does not reset between transactions.

Broker-dealers have followed Regulation Best Interest (Reg BI) since June 2020. Each recommendation has to be in your best interest at the time it's made, and material conflicts must be disclosed via Form CRS. The standard is higher than the old suitability rule that preceded it. But it is a per-recommendation standard, not a continuous one. Between transactions, the same level of obligation does not apply.

Insurance agents generally follow state insurance suitability standards. Requirements vary by state, and most fall below either Reg BI or the fiduciary standard. When an insurance agent recommends an annuity or a life insurance policy, the applicable rule is usually suitability, not best interest and not fiduciary.

One question worth asking any financial professional before engaging their services: "Are you acting as a fiduciary with respect to this specific recommendation?" A registered investment adviser with no dual registration answers yes without qualification. A broker, an insurance agent, or a dually registered adviser may answer no, or may qualify the answer in ways that reveal when and whether the fiduciary standard applies.

The most common source of confusion isn't an adviser lying about fiduciary status. It's an adviser who holds two registrations at once: investment adviser representative and broker-dealer representative. That person owes you fiduciary duty when working in your advisory account, and the Reg BI standard when selling you a product through the broker-dealer arm. Same person. Same office. Two legal standards, switching based on the transaction.

Here's what the switch looks like. The adviser manages your advisory account as a fiduciary. Then, in a review meeting, they suggest an annuity or a mutual fund with a sales load. That recommendation happened under a different standard, with a commission attached, and nothing on the business card announced the change. It's legal. It's disclosed in Form CRS, the relationship summary every dually registered firm has to give you. Most people never read it.

This is why "fiduciary" gets used loosely in marketing. An adviser who's a fiduciary part of the time can put the word on a website without technically lying. Vetting the individual harder doesn't fix it. The simpler move is choosing a firm where the second registration doesn't exist. A fee-only investment adviser with no broker-dealer affiliation has nothing to switch to. Every recommendation, every account, same standard.

Start at the SEC's Investment Adviser Public Disclosure system: adviserinfo.sec.gov (opens in new tab). Search by name or CRD number. A pure investment adviser shows registration as an RIA without a parallel broker-dealer registration. If you see dual registration, the standard protecting you varies by transaction.

Then read Form ADV Part 2A. This is the document that actually tells you what's going on: advisory services offered, compensation structure, broker-dealer affiliations, disciplinary history. If the disclosures mention services provided in a "non-advisory capacity," the adviser has told you themselves that fiduciary duty doesn't always apply. Every Form ADV is a public document. Ours is linked from the footer of every page on this site. You can also check individual adviser records on FINRA BrokerCheck (opens in new tab) for employment history, licenses, and any disclosure events.

Then ask directly: "Are you a fiduciary for every service you provide to me?" A pure investment adviser answers yes without qualification. Any hesitation, or any conditional answer, tells you what you're dealing with.

One more thing worth knowing: fiduciary status doesn't mean zero conflicts. An adviser charging a percentage of assets has an incentive to grow the account rather than, say, recommend paying down high-interest debt instead of investing. On a $100,000 account at 1.20%, that's $1,200 a year in advisory fees. Those remaining conflicts are required to be disclosed in Form ADV. For our disclosures, see our about page.

Narstar is a fee-only investment adviser in Utah, registered in Utah and conditionally registered in Texas, with no broker-dealer affiliation. Our fiduciary duty applies to every account we manage. Want to verify that? The public records at adviserinfo.sec.gov are the place to start.

Are all financial advisors fiduciaries?

No. "Financial advisor" is a generic label with no legal standard attached. Registered investment advisers are fiduciaries under the Advisers Act. Broker-dealer representatives follow Regulation Best Interest, which applies recommendation by recommendation. Insurance agents follow state insurance standards. The title on the card tells you nothing. The registration behind it tells you everything.

Can a fiduciary earn commissions?

A dually registered adviser can: fiduciary in the advisory account, commissions when acting as a broker. So yes, someone who's a fiduciary part of the time can earn commissions the rest of the time. A fee-only investment adviser can't earn commissions at all. That's the cleanest line to check.

Does fiduciary duty guarantee good results?

No. Fiduciary duty governs loyalty and care, not outcomes. A fiduciary's portfolio can lose money. Investing always involves risk, including the possible loss of principal. What the duty establishes is whose interest the advice has to serve, not what the market will do.

How do I check whether a specific adviser is a fiduciary?

Look up the firm at adviserinfo.sec.gov (opens in new tab), read Form ADV Part 2A, and ask the adviser to confirm in writing that they act as a fiduciary for every service they provide to you. Narstar's public record is CRD #337496 (opens in new tab) if you want to see what a clean record looks like.

Are robo advisors fiduciaries?

Most robo advisors are registered investment advisers and are technically fiduciaries under the Investment Advisers Act. The legal obligation applies. The difference is how it is expressed. A human adviser exercises individual judgment about your specific situation. A robo advisor runs your information through an algorithm designed to serve a general population of clients. The duty is real, but it is implemented through software design, not personalized judgment. Investing involves risk, including the possible loss of principal, regardless of who or what manages your portfolio.

What is the fiduciary duty of an investment adviser?

The fiduciary duty of an investment adviser has two parts. The duty of care requires advice that actually fits your situation, not generic recommendations that happen to benefit the adviser. The duty of loyalty requires the adviser to put your interest ahead of their own. Any conflict they cannot eliminate must be disclosed in writing, in advance, in Form ADV Part 2A. The duty runs continuously throughout the advisory relationship, not just at the point of each transaction.