READ NOWH1 2026, State of Advisor Movement

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Market Insights
GuideFiled October 12, 20264 min read

Reg BI vs Fiduciary Duty: What Changes When an Advisor Moves

Reg BI vs fiduciary duty, for an advisor planning a move: what Regulation Best Interest requires of a broker-dealer, what an investment adviser's fiduciary duty requires, how dually registered advisors work under both, and which standard applies after a move.

Filed by Tyler Noe

GuideReg BI vs Fiduciary Duty: What Changes When You Move

The short answer: Regulation Best Interest, required since June 30, 2020, requires a broker-dealer to act in a retail customer's best interest at the time it makes a recommendation, without putting its own interests ahead, and it applies recommendation by recommendation. An investment adviser's fiduciary duty, a duty of care and a duty of loyalty, applies to the entire relationship with the client. A dually registered advisor works under both, depending on the account; an advisor who moves to an independent RIA and gives up the broker-dealer registration works under the fiduciary duty alone for their securities business.

Reg BI vs fiduciary duty at a glance

Regulation Best InterestFiduciary duty
Who it governsBroker-dealers and their registered representativesInvestment advisers and their investment adviser representatives
When it appliesAt the time a recommendation is made to a retail customerThroughout the relationship with the client
What it requiresAct in the retail customer's best interest without placing the firm's interests ahead, through disclosure, care, conflict-of-interest and compliance obligationsA duty of care and a duty of loyalty
Where it comes fromSEC Release No. 34-86031, compliance date June 30, 2020The Investment Advisers Act, as interpreted in SEC Release No. IA-5248
Disclosure to retail investorsForm CRS, plus Reg BI's disclosure obligationForm CRS (SEC-registered advisers) and the Form ADV brochure

What Reg BI requires

The SEC adopted Regulation Best Interest on June 5, 2019. It took effect September 10, 2019, and broker-dealers had to comply by June 30, 2020. It requires a broker-dealer, when it recommends a securities transaction or investment strategy to a retail customer, to act in that customer's best interest at the time of the recommendation, without placing the broker-dealer's financial or other interests ahead of the customer's.

The rule is built on four component obligations: a disclosure obligation, a care obligation, a conflict of interest obligation and a compliance obligation. The SEC described it as raising the broker-dealer standard of conduct beyond the suitability obligations that applied before.

What the fiduciary duty requires

An investment adviser is a fiduciary under federal law. In its 2019 interpretation, the SEC described that fiduciary duty as comprising a duty of care and a duty of loyalty, and said it applies to the entire relationship between the adviser and its client. It is principles-based and follows the shape of the relationship the adviser and client agree on.

Two standards, one advisor: dual registration

Nearly all wirehouse advisors, and many at regional firms and independent broker-dealers, are registered both as registered representatives and as investment adviser representatives. For them, the standard follows the account: brokerage recommendations fall under Reg BI, including a recommendation of one type of account over another, and advisory accounts fall under the fiduciary duty. These federal standards are the floor: state securities rules, the Department of Labor's rules for retirement-account advice and, for CFP professionals, the CFP Board's standards can add to them. What is a dually registered advisor explains how the two registrations work side by side, and what is a hybrid RIA covers the independent version.

What changes when an advisor moves

  • Wirehouse to independent broker-dealer. The advisor usually stays dually registered, so both standards continue, account by account.
  • To a hybrid RIA. Advisory business moves to the advisor's own RIA under the fiduciary duty, and the broker-dealer registration, with Reg BI, stays for commission business.
  • To an independent RIA with no broker-dealer. Once the broker-dealer registration ends, every securities account the advisor manages sits under the fiduciary duty; any fixed insurance sold under an insurance license follows state insurance rules. Lapsing your Series 7 when you go RIA covers what ending that registration involves.

The wider differences between the two independent channels, from supervision to payouts, are in IBD vs RIA: what changes for a financial advisor, and how the move affects the way an advisor can describe their compensation is in fee-only vs fee-based.

Which structure fits a practice

The standard of care follows the structure, and the structure follows the book: how much of the business is brokerage, how clients are served, and what the advisor wants the firm to look like in ten years. That read starts with a confidential conversation. Request an Introduction.

Sources (3)

Frequently asked

What is Regulation Best Interest?
Regulation Best Interest is the SEC's standard of conduct for broker-dealers making recommendations to retail customers. Adopted June 5, 2019, with a compliance date of June 30, 2020, it requires a broker-dealer to act in the retail customer's best interest at the time a recommendation is made, without placing the broker-dealer's interests ahead, and it is built on four component obligations: disclosure, care, conflict of interest and compliance.
How is Reg BI different from fiduciary duty?
The biggest differences are scope and timing. Reg BI applies to each recommendation a broker-dealer makes to a retail customer, at the time it is made. An investment adviser's fiduciary duty, which the SEC describes as a duty of care and a duty of loyalty, applies to the entire relationship between the adviser and the client.
When did Reg BI take effect?
Regulation Best Interest became effective September 10, 2019, and broker-dealers had to comply by June 30, 2020.
Are wirehouse advisors fiduciaries?
It depends on the account. Most wirehouse advisors are dually registered, so their recommendations on brokerage accounts fall under Reg BI and their management of advisory accounts falls under the fiduciary duty of the Investment Advisers Act.
Does Reg BI apply to an independent RIA?
Not to an RIA that has no broker-dealer. Reg BI governs broker-dealers and their associated persons; an RIA and its investment adviser representatives work under the Advisers Act fiduciary duty. An advisor who is dually registered through a hybrid RIA works under both, account by account.
What is Form CRS?
Form CRS is the short relationship summary that SEC-registered broker-dealers and investment advisers give retail investors, describing their services, fees, conflicts and standard of conduct. The SEC adopted it alongside Regulation Best Interest; state-registered advisers are not required to file it.

Filed

October 12, 2026

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