What Is a Fiduciary Financial Advisor?

A fiduciary is a financial professional who is legally required to act in your best interest. For SEC-registered investment advisers, that duty comes from the federal Investment Advisers Act of 1940. State-registered advisers are governed by applicable state law and rules. The duty generally applies throughout the advisory relationship, not just at one moment.

The idea is simple: a fiduciary has to act in your interest, not their own. For SEC-registered advisers, Section 206 of the Investment Advisers Act bars fraud and misleading advice. In 1963, the Supreme Court explained in SEC v. Capital Gains Research Bureau that the Act reflects a fiduciary duty. State-registered advisers also have legal obligations, but the controlling source is the law and rules of the state where they are registered.

That duty has two parts. The duty of care means the advice has to fit your actual situation, not just be something generic that happens to pay the adviser well. The duty of loyalty means your interest comes before the adviser's. If there's a conflict the adviser can't get rid of, they have to write it down and give it to you in advance, in a document called Form ADV Part 2A.

In practice, that rules out a few things. A fiduciary can't recommend a product just because it pays them more than the alternative. They can't hold your money in a way that benefits their firm at your expense. They can't hide a relationship with another company that affects what they recommend.

Fiduciary duty does not guarantee results. Investing carries risk, and fiduciary advice can still lose money. The duty requires the adviser to put the client's interest first and address conflicts under the law that applies to that adviser.

Investment advisers are fiduciaries by law. Where that duty comes from depends on how the firm is registered. Larger advisers generally register with the SEC and are governed by the federal Investment Advisers Act. Smaller advisers, including Narstar, generally register with one or more states. Narstar's obligations arise under applicable state law and rules, not because Narstar is registered with the SEC. Utah and Texas each apply their own requirements to state-registered advisers. Because the exact source and scope can vary, ask any adviser to confirm in writing which standard applies to your relationship.

Brokers and their representatives follow a different, lower standard, covered in the next section. This matters more than people realize, because a lot of firms hold both kinds of registration at once. Which standard protects you depends on which job that person is doing for you at that moment.

A fee-only investment adviser is registered as an adviser only, with no broker license attached. There's no second, lower standard to switch to. A fee-based adviser often holds both registrations: fiduciary duty when acting as an adviser, a lower standard when acting as a broker. Same person, same office, two different rules depending on the transaction. It's legal, and it's disclosed, but it's easy to assume "fiduciary" covers everything they do when it doesn't. See the fee-only vs. fee-based article for how each one gets paid.

Most robo advisors are registered as investment advisers under the same law covered above. That registration comes with the same fiduciary duty as any other investment adviser. So in the legal sense, yes, robo advisors are fiduciaries.

The difference is how that duty plays out. A human adviser looks at your specific situation: income, timeline, other accounts, taxes, life changes. A robo advisor runs your questionnaire answers through an algorithm and places you into a model portfolio built for a wide range of clients. A person wrote that algorithm, and made choices about what to prioritize. Those choices reflect the company's business needs as well as your interests, and they stay fixed until the software gets updated.

When your life changes, a human adviser can adjust. An algorithm keeps doing what it's always done until someone rewrites it. That might be fine if your situation is simple. It might not be if it isn't.

So robo advisors meet the legal definition of a fiduciary. What that looks like day to day is different from a person actively watching your account and making judgment calls about it. Investing carries risk either way, no matter who or what manages the portfolio.

Regulation Best Interest (opens in new tab), or Reg BI, requires brokers to act in your best interest each time they make a specific recommendation. That's a real step up from the old "suitability" rule, which only asked whether a recommendation was reasonable, not whether it was the best option available. But Reg BI still isn't the same as fiduciary duty.

The biggest difference is timing. An investment adviser's duty runs the whole time you work together. If a conflict shows up six months in, they have to tell you right away. Reg BI works differently: a broker meets the standard if each recommendation, at the moment they make it, is in your best interest. Between recommendations, there's no ongoing duty. It resets every time.

The paperwork is different too. An investment adviser hands you Form ADV Part 2A before you become a client and keeps it current. A broker discloses conflicts recommendation by recommendation, through a shorter document called Form CRS.

From the outside, a fiduciary adviser and a broker under Reg BI can look almost the same. Both use the phrase "best interest." But the legal duties behind those words aren't the same, and neither is what happens if something goes wrong.

Registered investment advisers work under the fiduciary standard from the Investment Advisers Act of 1940. They have to act in your best interest on an ongoing basis, write down every real conflict of interest in Form ADV Part 2A before you become a client, and keep that document current. The duty doesn't reset between transactions.

Brokers have followed Regulation Best Interest, or Reg BI, since June 2020. Each recommendation has to be in your best interest at the time it's made, and real conflicts have to be disclosed through Form CRS. That's a higher bar than the old suitability rule it replaced, but it's still a per-recommendation standard, not a continuous one. Between transactions, the same level of duty doesn't apply.

Insurance agents generally follow their state's insurance suitability rules instead. These vary by state, and most set a lower bar than either Reg BI or fiduciary duty. If an agent recommends an annuity or a life insurance policy, suitability, not best interest and not fiduciary duty, is usually the rule that applies.

One question worth asking any financial professional before you hire them: "Are you acting as a fiduciary for this specific recommendation?" A registered investment adviser with no broker license answers yes, no qualifiers. A broker, an insurance agent, or someone holding both registrations may say no, or may give you an answer that depends on what exactly they're doing for you.

The most common source of confusion isn't an adviser lying about being a fiduciary. It's an adviser who holds two licenses at once: investment adviser representative and broker-dealer representative. That person owes you fiduciary duty while managing your advisory account, and the lower Reg BI standard when they sell you a product through their broker license. Same person, same office, two different rules depending on which hat they're wearing.

The adviser manages your account as a fiduciary. Then, in a review meeting, they suggest an annuity or a mutual fund that carries a sales commission. That recommendation just happened under the other, lower standard, and nothing about the meeting signaled the switch. It's legal. It's disclosed in Form CRS, a summary every dually registered firm has to give you. Most people never read it.

This is why "fiduciary" gets used loosely in adviser marketing. Someone who's a fiduciary part of the time can put the word on their website without technically lying. Digging harder into one adviser's history doesn't fix that. The simpler fix is picking a firm that only has one registration in the first place. A fee-only investment adviser with no broker license has no second, lower standard to switch to. Every recommendation, every account, same rule.

Start at the SEC's public adviser database: adviserinfo.sec.gov (opens in new tab). Search by name or CRD number. A pure investment adviser shows up registered as an RIA with no broker-dealer license attached. If you see both, the rule protecting you depends on what they're doing for you at that moment.

Then read Form ADV Part 2A. This is the document that actually spells things out: what services they offer, how they get paid, any broker-dealer ties, and any disciplinary history. If it mentions services provided in a "non-advisory capacity," the adviser is telling you in writing that fiduciary duty doesn't cover everything they do. Every Form ADV is a public document. Ours is linked in the footer of every page on this site. You can also look up an individual adviser's work history, licenses, and disciplinary record on FINRA BrokerCheck (opens in new tab).

Then just ask: "Are you a fiduciary for every service you provide to me?" A pure investment adviser says yes, no hedging. Any hesitation, or any "it depends," tells you what you're dealing with.

One more thing worth knowing: being a fiduciary doesn't mean there are zero conflicts of interest. An adviser who charges a percentage of your account has some incentive to grow that account, rather than, say, tell you to pay off high-interest debt instead of investing more. On a $100,000 account at an example rate of 1%, that's $1,000 a year in fees. Advisers have to write these remaining conflicts down in Form ADV. See our about page for ours.

Narstar is a fee-only investment adviser in Utah, registered in Utah and conditionally registered in Texas, with no broker-dealer license. Our fiduciary duty applies to every account we manage. You can check that yourself at adviserinfo.sec.gov.

Are all financial advisors fiduciaries?

No. "Financial advisor" is just a job title, not tied to any specific legal rule. Registered investment advisers are fiduciaries under the Advisers Act. Broker-dealer representatives follow Regulation Best Interest, which only applies recommendation by recommendation. Insurance agents follow their state's insurance rules. The title on someone's business card doesn't tell you which of these applies. Their registration does.

Can a fiduciary earn commissions?

If they're dually registered, yes. They act as a fiduciary in your advisory account, and earn commissions when acting as a broker on other products. A fee-only investment adviser can't earn commissions at all, in any account. That's the simplest way to check.

Does fiduciary duty guarantee good results?

No. Fiduciary duty covers loyalty and care, not results. A fiduciary's portfolio can still lose money, including the possible loss of principal. The duty decides whose interest the advice has to serve, not what the market does.

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

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

Are robo advisors fiduciaries?

Most robo advisors are registered investment advisers, so yes, they're technically fiduciaries under the law. But the duty looks different in practice. A human adviser makes judgment calls about your specific situation. A robo advisor runs your answers through an algorithm built for a wide range of clients. The legal duty is real, but it's built into the software, not a person making decisions about you. Investing carries risk either way, no matter who or what manages your money.

What is the fiduciary duty of an investment adviser?

It has two parts. The duty of care means the advice actually has to fit your situation, not just be something generic that happens to benefit the adviser. The duty of loyalty means your interest comes before theirs. Any conflict they can't get rid of has to be written down and given to you in advance, in Form ADV Part 2A. And the duty doesn't stop after the first meeting: it runs for as long as you're a client.