Fiduciary vs. suitability: what standard your financial advisor actually has to meet

Two people can both hand you a business card that says "Financial Advisor" and be held to completely different legal standards for the recommendation they just gave you. One of them has to act in your best interest at all times. The other has to reasonably believe a specific recommendation is in your best interest at the moment they make it — a real standard, but a narrower one. Neither title tells you which is which. Here's what actually determines it, and what changed in the rules this year.

Three different standards, not one

Fiduciary duty applies to registered investment advisers (RIAs) under the Investment Advisers Act. The SEC's own plain-language description: "Investment advisers are required to act in your best interest and not put their interest ahead of yours." This is an ongoing duty that covers the relationship, not just a single transaction.

Regulation Best Interest (Reg BI) applies to brokers and broker-dealers when they make a recommendation to a retail customer. It took effect June 30, 2020, and it raised the bar above the older "suitability" standard, which only required that a recommendation be appropriate given a customer's situation — not necessarily in their best interest. FINRA, the SEC-overseen regulator for broker-dealers, describes Reg BI's requirement as a genuine best-interest standard at the moment of the recommendation, with disclosure and mitigation of conflicts of interest. But FINRA is explicit that this isn't the same as a full fiduciary duty: a broker under Reg BI doesn't take on the ongoing loyalty obligation an RIA does.

The SEC's own consumer-facing language draws the practical line simply: "Brokers are required to act in your best interest when making a recommendation and not put their interest ahead of yours" — worded almost identically to the adviser standard, which is exactly why the two get confused. The legal difference is in scope (a single recommendation vs. an ongoing relationship) and in exactly what "best interest" requires a firm to document and mitigate.

It's also why you'll still see "suitability" used loosely online even though it's technically outdated. Before 2020, suitability was the actual legal bar for broker recommendations: a recommendation just had to be appropriate for the customer's profile, without any requirement to weigh it against cheaper or better alternatives, or to put the customer's interest ahead of the broker's own. Reg BI replaced that bar for broker-dealers. It didn't disappear from public conversation, though, because the underlying tension it addressed — a recommendation that's "fine" versus one that's actually in your best interest — is exactly what people are usually trying to ask about when they use the word.

Why any of this matters in dollar terms: the standard governing a recommendation shapes what a firm is required to disclose and mitigate around compensation. A rollover recommendation, an annuity sale, or a proprietary fund pick can look identical on paper under either standard — the difference shows up in what conflicts the advisor had to disclose to you and document before making it, not in the product itself.

What changed in 2026

For retirement accounts specifically — 401(k) rollovers, IRAs — there's a third layer: ERISA, the federal law governing employer retirement plans. In 2024, the Department of Labor finalized a rule that would have applied a fiduciary standard more broadly to recommendations touching those accounts. That rule didn't survive. Federal courts vacated it, and the DOL formally removed it from the Code of Federal Regulations, effective April 20, 2026, per a Notice of Court Vacatur published in the Federal Register on March 20, 2026.

What that restores is the older standard: a 1975 regulation — often called the "five-part test" — that narrows who counts as an ERISA investment-advice fiduciary. In general terms, advice only triggers fiduciary status under that test if it's given on a regular basis, under a mutual understanding that it will serve as a primary basis for the client's investment decisions, and it's individualized to that plan or account's specific needs. It's a considerably narrower gate than the 2024 rule would have set. The DOL's notice also republished the related prohibited-transaction exemption (PTE 2020-02) that governs how advisors can be compensated for rollover recommendations without violating fiduciary rules when they do apply.

The practical takeaway: this specifically affects retirement-account advice. It doesn't change Reg BI for brokerage accounts generally, and it doesn't touch the fiduciary duty RIAs owe under the Investment Advisers Act. Three separate rulebooks, one narrower again after this year's court rulings.

How to find out which one applies to you

You don't have to guess, and you don't have to take a job title's word for it. Every broker and investment adviser is required to give clients a short, plain-language disclosure called Form CRS (Client Relationship Summary) that states which standard governs the relationship. Ask for it directly if you haven't seen one.

You can also check registration status yourself, free, in a few minutes:

• FINRA BrokerCheck — registration and disciplinary history for brokers and brokerage firms.
• Investor.gov's search tool (SEC) — covers both brokers and investment advisers, including state-registered advisers.

And you can simply ask: "Are you a fiduciary at all times, or does Regulation Best Interest apply to your recommendations to me?" A straight answer to that question tells you more than the title on the business card.

What this isn't

This is a plain-English explanation of the standards that govern financial advice — not investment, legal, or tax advice, and not a recommendation of any specific advisor, broker, or firm. ClearValue Money isn't a registered investment adviser or broker-dealer and doesn't evaluate individual advisors. For your own situation, the tools above (Form CRS, BrokerCheck, Investor.gov) are the direct, authoritative resources to use, and a licensed professional is the right place for advice specific to you.

Where this fits

This is the same throughline as everything else we publish in this category: a recommendation — from a site, a finfluencer, or an advisor — is only as good as the process and disclosure behind it. We've written before about how to tell if a money site is worth trusting and what FINRA's own data says about trusting a finfluencer. Knowing which legal standard your advisor answers to is the same kind of check, aimed at a different information source.