Quick Answer
NASAA requires suitable broker-dealer recommendations to any customer and adds best-interest duties for retail recommendations. FINRA's separate suitability rule excludes recommendations covered by Regulation Best Interest (Reg BI). Investment advisers owe an ongoing fiduciary duty; trustees follow the Uniform Prudent Investor Act (UPIA).
With custody, discretion, and trading authorizations covered, the final piece is understanding which standard of care applies to each type of securities professional.
What Standard Applies to Broker-Dealers?
A broker-dealer that makes a recommendation must have a reasonable basis to believe it is appropriate for the customer:
- Suitability applies to a recommendation made to any customer under the NASAA Statement of Policy on Dishonest or Unethical Business Practices of Broker-Dealers and Agents: the recommendation must be suitable based on reasonable inquiry into the customer's investment objectives, financial situation, and needs
- At the FINRA level, the suitability rule is the operative standard for non-retail customers, because recommendations already subject to Reg BI are carved out of it. For institutional accounts, the customer-specific prong is satisfied if the customer can independently evaluate investment risks and affirmatively indicates it is exercising independent judgment
- Best interest applies to recommendations to retail customers: under SEC Regulation Best Interest (adopted under the Securities Exchange Act of 1934), the broker-dealer must act in the retail customer's best interest at the time of the recommendation and not place its own interest ahead of the customer's
- A retail customer's legal representative means a non-professional one, such as an individual executor, conservator, or person holding a power of attorney. A professional fiduciary, such as a bank trust department, is not a retail customer, so suitability governs a recommendation to it
- A suitability or best-interest obligation cannot be waived or disclaimed by customer agreement; even if a customer insists on an unsuitable transaction, the firm must not recommend it
- These standards apply to recommendations; an unsolicited trade the customer initiates without a recommendation is not subject to them
Exam Tip: Gotchas
- The standard applies to recommendations. If a customer initiates a trade without a recommendation, the obligation does not attach; if the agent recommends it, it does, regardless of whether the customer also wanted the trade.
- Reg BI is not a fiduciary standard. It requires a broker-dealer to act in the customer's best interest at the point of recommendation, but it does not impose the ongoing duty of loyalty that an investment adviser owes.
What Information Builds the Customer's Investment Profile?
FINRA's suitability rule requires reasonable diligence to gather the customer's investment profile before recommending a transaction or strategy:
| Factor | Description |
|---|---|
| Age | Life stage and time horizon implications |
| Other investments | Overall portfolio composition |
| Financial situation and needs | Income, net worth, expenses, obligations |
| Tax status | Tax bracket, tax-advantaged needs |
| Investment objectives | Growth, income, preservation, speculation |
| Investment experience | Sophistication and familiarity with products |
| Investment time horizon | When the customer needs the funds |
| Liquidity needs | Need for readily accessible cash |
| Risk tolerance | Willingness and ability to accept loss |
What Are the Three Components of Suitability?
| Component | Standard |
|---|---|
| Reasonable-basis suitability | The member must believe, based on reasonable diligence, that the recommendation is suitable for at least some investors; the member must understand the investment's risks and rewards |
| Customer-specific suitability | The recommendation must be suitable for the particular customer based on that customer's investment profile |
| Quantitative suitability | Even individually suitable transactions become unsuitable if a series of recommended transactions is excessive in size or frequency when viewed collectively (churning) |
What Does Reg BI Require Beyond Suitability?
Reg BI imposes four component obligations on a broker-dealer recommending to a retail customer:
| Obligation | Requirement |
|---|---|
| Disclosure | Disclose, in writing, all material facts about the relationship, including fees, costs, and conflicts of interest, before or at the time of the recommendation. A separate SEC rule adopted alongside Reg BI additionally requires delivering Form CRS (Client Relationship Summary) to retail customers. |
| Care | Exercise reasonable diligence, care, and skill to understand the recommendation's risks, rewards, and costs; have a reasonable basis to believe it is in the customer's best interest |
| Conflict of interest | Identify and disclose or eliminate all conflicts of interest; separately identify and mitigate any conflict that creates an incentive to place the firm's interest ahead of the customer's; eliminate sales contests, quotas, bonuses, and non-cash compensation tied to selling specific securities within a limited period |
| Compliance | Maintain written policies and procedures reasonably designed to achieve compliance with Reg BI as a whole |
Exam Tip: Gotchas
- Reg BI's care obligation explicitly requires considering costs, something FINRA's suitability rule does not spell out. That is one of the clearest differences the exam tests between the two standards.
How Does NASAA Incorporate the Best-Interest Standard?
NASAA's model Statement of Policy on Dishonest or Unethical Business Practices incorporates the retail best-interest standard. A covered failure is dishonest conduct under that model. Actual state-law enforcement depends on jurisdictional adoption; the Series 63 tests the model standard without requiring an adoption premise in each question.
What Duty Do Investment Advisers Owe?
An investment adviser owes its clients an ongoing fiduciary duty under the Investment Advisers Act of 1940's prohibited-transactions provisions and the USA's antifraud provisions, not just a duty at the moment of a recommendation. That duty has two parts:
- Duty of loyalty: put the client's interests ahead of the adviser's own, and disclose material conflicts of interest
- Duty of care: provide suitable advice based on the client's objectives, exercise the skill and diligence a prudent professional would use, and monitor the relationship over time
Unlike a broker-dealer's suitability or best-interest obligation, which attaches at the point of a recommendation, the adviser's fiduciary duty continues for as long as the advisory relationship lasts.
What Standard Applies to Trustees?
A trustee who invests and manages trust assets follows the prudent investor standard under the Uniform Prudent Investor Act. That Act addresses trustees. Another fiduciary's standard of care and financial powers depend on the governing law and any court order.
The UPIA replaced the older "prudent man rule" from Harvard College v. Amory (1830) with a modern standard built on Modern Portfolio Theory.
This standard governs the trustee/beneficiary relationship only. It does not apply to the broker-dealer/customer or adviser/client relationship.
What Are Important Trustee Investment Duties Under the UPIA?
| Rule | Description |
|---|---|
| Overall portfolio standard | The prudence of each investment is judged in the context of the entire portfolio, not in isolation, as part of an overall strategy with risk and return objectives suited to the trust |
| Diversification | A trustee must diversify unless a reasonable determination shows special circumstances make diversification counterproductive to the trust's purposes |
| Risk-return balance | A trustee must invest as a prudent investor would, considering the trust's purposes, terms, distribution requirements, and other circumstances |
| Delegation | A trustee may delegate investment functions to agents (such as investment advisers) if it exercises reasonable care in selecting the agent, setting the scope of delegation, and periodically reviewing performance |
| Cost management | A trustee must incur only costs that are appropriate and reasonable relative to the assets, the trust's purposes, and the trustee's skills |
What Else Does the UPIA Change from the Old Prudent Man Rule?
- No categorical restrictions: no investment category is inherently imprudent; even a speculative instrument may fit within a diversified portfolio, unlike the old rule, which barred "speculative" investments outright
- Time-of-decision standard: a trustee's decisions are judged on what was reasonable when made, not with hindsight
- Total return: the trustee considers both income and capital appreciation together, not income alone
- Duty of loyalty: the trustee acts solely in the beneficiaries' interest, with no self-dealing or conflicts of interest
- Duty of impartiality: with multiple beneficiaries (for example, an income beneficiary and a remainder beneficiary), the trustee must balance all their interests
- A trustee with special investment skills or expertise is held to a higher standard reflecting those skills
- Duty at inception: within a reasonable time after accepting a trusteeship or receiving trust assets, the trustee must review the assets and decide whether to retain or dispose of each one, to bring the portfolio into compliance with the trust's purposes and terms. The same duty applies if a once-proper investment later becomes improper, and to a successor trustee
Exam Tip: Gotchas
The UPIA governs trustees, not broker-dealers or investment advisers. A common trap applies the prudent-investor standard to a broker-dealer scenario; watch for which relationship the question actually describes.
Which Standard Applies to Each Role?
| Role | Applicable Standard |
|---|---|
| Broker-dealer agent (retail customers) | NASAA suitability plus Regulation Best Interest; FINRA's separate suitability rule excludes recommendations covered by Reg BI |
| Broker-dealer agent (non-retail customers) | Suitability (modified customer-specific prong for institutional accounts) |
| Investment adviser | Fiduciary duty (loyalty + care) under the Investment Advisers Act and the USA antifraud provisions |
| Trustee | Prudent investor standard |
Think of it this way: Broker-dealer recommendation duties depend on the customer and regulatory framework. NASAA retains suitability and adds retail best interest. Investment advisers owe an ongoing fiduciary duty; trustees owe the prudent investor standard with loyalty and impartiality to beneficiaries.
What Should You Check on Exam Day?
- FINRA's suitability rule applies to non-retail recommendations; the customer-specific prong is relaxed for institutional accounts that can evaluate risk independently and affirmatively say so.
- Reg BI applies only to retail customer recommendations and adds four obligations: disclosure, care, conflict of interest, and compliance. A separate rule adopted alongside Reg BI requires delivering Form CRS. Reg BI considers costs; suitability does not explicitly require that.
- Neither suitability nor best interest can be waived or disclaimed; both reach recommendations, not unsolicited trades. Reg BI is not a fiduciary standard and imposes no ongoing duty of loyalty.
- An investment adviser owes an ongoing fiduciary duty (loyalty + care) under the Investment Advisers Act, for the life of the relationship, not just at recommendation.
- A trustee uses the prudent investor standard: portfolio-level prudence, diversification absent special circumstances, supervised delegation, reasonable costs, no categorical investment ban, and time-of-decision review. The trustee reviews assets within a reasonable time after accepting the role and reconsiders later-improper assets.