What Is a Fiduciary Financial Advisor? | Cornerstone Wealth Partners

What is a fiduciary financial advisor?

The short answer

A fiduciary financial advisor has a legal duty to act in your best interest and not put their own interests ahead of yours. For an SEC-registered investment adviser, that duty covers the whole relationship and can't be waived in a contract. A fiduciary can still have conflicts of interest, they just have to get rid of them or tell you about them.

What the word means

Fiduciary is a legal term for someone who looks after your money and has to put your interests first while they do it. Under federal law, every investment adviser is a fiduciary to its clients.

The SEC spelled out what that duty includes in a 2019 interpretation. It has two parts:

  • A duty of care. The adviser has to give advice that's in your best interest, based on your goals. That starts with asking about your finances, your investing experience and what you're trying to do. In an ongoing relationship it also means watching your accounts over time.
  • A duty of loyalty. The adviser can't put their interests ahead of yours. Any conflict of interest has to be removed or disclosed clearly enough that you can agree to it knowing what it is.

The duty can't be switched off

The duty applies to the entire relationship, and the SEC says it can't be waived. A contract can set the scope of the work (a one-time plan is a lot narrower than managing your accounts every day), but the adviser is still a fiduciary for whatever they agreed to do.

How it compares to a broker

Brokers follow a different SEC rule called Regulation Best Interest, which took effect June 30, 2020. It also requires a broker to act in your best interest and not put the firm's interests ahead of yours when recommending an investment.

The difference is when the duty applies. Reg BI applies at the time the broker makes a recommendation. An investment adviser's duty runs through the whole relationship, including the monitoring that happens between recommendations. Some professionals are registered as both, so it's fair to ask which role they're in for a given piece of advice.

Fiduciaries still have conflicts

A fiduciary isn't conflict-free. Registered advisers and brokers that work with retail investors have to give you a short document called Form CRS, which lists their fees, their conflicts of interest and their disciplinary history.

Here's what ours says about how we're paid:

  • We charge a fee based on the assets we manage. The more you invest with us, the more we earn, so we have a reason to want you to invest more with us.
  • Some of our advisors are licensed insurance agents. If one of them arranges insurance for you, they receive a percentage of the insurance-related charges you pay. You're under no obligation to buy insurance through anyone we recommend.

Questions to ask any advisor

These work on anybody (us included):

  • Are you a fiduciary for everything you do with me, or only some of it?
  • How do you get paid, and what conflicts does that create?
  • Can I see your Form CRS?

Takeaway

So a fiduciary has to put your interests first for the whole relationship. To see how that works at a given firm, read its Form CRS and ask how it gets paid.

Related questions

Are all financial advisors fiduciaries?

No. Investment advisers are fiduciaries to their clients under federal law. Brokers follow Regulation Best Interest, which applies when they make a recommendation. A firm's Form CRS tells you which kind of firm it is and what standard it follows.

Can a fiduciary charge a percentage of assets?

Yes, and Cornerstone does. That fee is a conflict, since the adviser earns more when you invest more with them, so it has to be disclosed. Ours is in our Form CRS.

How do I check an advisor's background?

Search their name or firm at Investor.gov/CRS. It's a free SEC tool for researching investment advisers, brokers and the people who work for them, including any disciplinary history.

Sources

SEC, "Commission Interpretation Regarding Standard of Conduct for Investment Advisers," Release No. IA-5248, 84 Fed. Reg. 33669 (July 12, 2019) (govinfo.gov/content/pkg/FR-2019-07-12/pdf/2019-12208.pdf), checked October 12, 2026.

SEC, "Regulation Best Interest: The Broker-Dealer Standard of Conduct," Release No. 34-86031, 84 Fed. Reg. 33318 (July 12, 2019) (govinfo.gov/content/pkg/FR-2019-07-12/pdf/2019-12164.pdf), checked October 12, 2026.

SEC, "Form CRS Relationship Summary; Amendments to Form ADV," 84 Fed. Reg. 33492 (July 12, 2019) (govinfo.gov/content/pkg/FR-2019-07-12/pdf/2019-12376.pdf), checked October 12, 2026.

Cornerstone Wealth Partners, Form ADV Part 3, Form CRS, March 2026 (cornerstonewealthpartners.com/docs/form-crs.pdf).

Disclosures

This material is for educational purposes only and is not investment, legal, or tax advice. It describes federal rules as of October 12, 2026, which may change, and state rules may also apply. Cornerstone Wealth Partners is an SEC-registered investment adviser. Registration does not imply a certain level of skill or training. Cornerstone charges an asset-based advisory fee, which gives it an incentive to encourage you to increase the assets in your account, and some Cornerstone advisors are licensed insurance agents who receive a percentage of insurance-related charges when they arrange insurance. These are conflicts of interest, described with others in our Form CRS and Form ADV Part 2A, available at cornerstonewealthpartners.com/docs/. Investing involves risk, including possible loss of principal.

This article is for educational purposes only and is not personalized investment, tax, or legal advice. Talk with a qualified professional about your situation.