What is a fiduciary duty?
A fiduciary duty is a legal obligation to put a client's interest ahead of your own. For investment advisers it has two parts: a duty of care (give advice that is in the client's best interest, based on a reasonable understanding of their goals) and a duty of loyalty (do not put the adviser's interest first, and fully disclose conflicts of interest).
The SEC describes this duty as flowing from the Investment Advisers Act of 1940 and confirmed it in a 2019 interpretation. It applies to the whole relationship, not just single recommendations.
What is the difference between fiduciary duty, Reg BI and suitability?
Three standards cover most advice in the US. They differ in who they bind and how they treat conflicts.
| Standard | Who it applies to | Core requirement | Conflicts |
|---|---|---|---|
| Fiduciary duty (Advisers Act) | Registered investment advisers | Care and loyalty across the relationship | Disclose, and eliminate or reduce where needed |
| Regulation Best Interest | Broker-dealers recommending to retail customers | Recommendation must be in the customer's best interest when made | Disclose, and mitigate or eliminate certain ones |
| Suitability (FINRA Rule 2111) | Broker-dealers, in areas outside Reg BI such as some non-retail recommendations | Recommendation must fit the customer's profile | No best-interest test |
Suitability only asked whether a recommendation fit a customer's profile. It did not require the choice to be the best or cheapest. Reg BI raised that bar for retail customers and rests on four obligations: disclosure, care, conflict of interest and compliance.
The main gap that remains: Reg BI applies to recommendations at a point in time, while the fiduciary duty is ongoing and covers the whole advisory relationship.
Is a financial advisor automatically a fiduciary?
No. "Financial advisor" and "financial planner" are titles with no fixed legal meaning. What matters is how the person is registered and which hat they wear for a given account.
Many people are dual registered. They act as an RIA on advisory accounts and as a broker on commission accounts. The standard can change depending on the account type or even the recommendation.
The CFP Board also requires CFP professionals to act as a fiduciary when giving financial advice. That obligation comes from the CFP Board's own rules, not from securities law, and it does not change how the person is registered.
How do you vet a financial advisor?
Five checks take under an hour and work for strangers and relatives alike.
- Look them up. Search the SEC's Investment Adviser Public Disclosure site and FINRA BrokerCheck. Confirm registration and read any disciplinary history.
- Read Form CRS. Firms must give retail investors a short relationship summary that covers services, fees, conflicts and discipline.
- Ask in writing whether they act as a fiduciary for all the advice they give you, not just some accounts.
- Ask exactly how they are paid. Options include a flat fee, hourly rate, percentage of assets, or commissions. Fee-only advisers take no commissions on products, so they have fewer built-in conflicts.
- Convert fees to one yearly percentage that includes the advisory fee and fund costs, then compare it with a second quote.
What does a 1% fee really cost over 30 years?
Small percentages compound into large dollar gaps. The gap comes from fees reducing the base that grows each year.
Worked example, assuming a 7% average gross annual return and a $500,000 starting balance. The 7% is an illustration, not a forecast.
- At a 1% fee the net return is 6%. $500,000 × 1.06^30 = $500,000 × 5.7435 ≈ $2.87 million.
- At a 0.25% fee the net return is 6.75%. $500,000 × 1.0675^30 = $500,000 × 7.0971 ≈ $3.55 million.
- The difference is about $677,000, which is more than the original $500,000.
This simple calculation subtracts the fee from the return each year and ignores taxes, contributions and withdrawals. It also assumes both advisers earn the same gross return. Advice that prevents a costly mistake can be worth a fee, so compare what you get for the price. For more on this, see the hidden price tag on a 1% advisory fee.
Where does this framework fall short?
A fiduciary label is a floor, not a guarantee of good advice. A fiduciary can still charge high fees if they are disclosed, and can still give mediocre advice without breaking the law.
Common mistakes:
- Assuming Reg BI means fiduciary. It does not. Reg BI can be met by disclosing and mitigating certain conflicts.
- Trusting a credential alone. A CFP mark or a title on a business card does not tell you how an account is regulated.
- Assuming family is safer. A relative paid a percentage of assets earns more as the account grows, the same as anyone else. A family tie does not change the legal standard that applies.
- Ignoring the whole fee. Fund expenses, trading costs and advisory fees all count.
Some of the fiduciary standard also depends on facts, such as whether advice is given at all. A broker who only executes trades you chose on your own owes you less than one who recommends them.
What this means for you
Treat any advice relationship as a purchase you are allowed to shop for. A few habits cover most of the risk:
- Before you hand over money, look up the person on both the SEC and FINRA sites and keep a copy of Form CRS.
- Ask how they are paid and what the all-in yearly cost is as a percentage, and get a second quote.
- Do not let a deadline rush the choice of adviser. If you inherit a retirement account, you can first move it to a low-cost custodian and keep distribution deadlines, then take time to interview advisers. See how index funds compare with picking your own stocks and how to spot an investment scam for related checks.
- Check any single stock idea yourself. Cluenex gives each stock a plain-English verdict and a fair value range with its method explained at how we value, which gives you a second view to compare with an adviser's pitch.
- Revisit the arrangement every year. Ask what you paid in dollars and what you got for it.