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Lesson 3 of 5 10–15% of the exam

Standard III(C): Suitability

In an advisory relationship, find out the client's experience, risk and return objectives and constraints before acting, update them at least annually, and judge each investment in the context of the whole portfolio. When managing a fund to a mandate, stay within its stated objectives and constraints.

6 min cram, 32 min full read. Based on the 2027 CFA® Program Level I curriculum, Ethical and Professional Standards, Learning Module 5. Sitting in November 2026? The 2026 version of this lesson is still available.

Tailor this to you: take the self-assessment

Before this: Standard III(B): Fair Dealing

On the exam

  • Demonstrate the application of the Code of Ethics and Standards of Professional Conduct to situations involving issues of professional integrity
  • Recommend practices and procedures designed to prevent violations of the Code of Ethics and Standards of Professional Conduct
  • Identify conduct that conforms to the Code and Standards and conduct that violates the Code and Standards

Demonstrate III(C), recommend compliance practices and identify compliant conduct. Expect unsolicited-trade items, investment policy statement update items and "fund drifted from its mandate" items. The usual wrong answers judge a security alone, or treat an unsolicited request as always banned or always fine.

How deeply to learn each part
Know the idea
Understand it in general. It frames other topics, but you will not calculate with it.
Use it
Understand it well enough to solve a question with it. Recognize when it applies.
Memorize
Learn it by heart. The exam will not give it to you.

You know this one. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still do.

You tested strong here. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still know it.

Cram mode: the one-screen version of this lesson. Switch to Full for the explanations, worked examples and interactives.

What does Standard III(C) require?

When you are in an advisory relationship with a client, you must weigh the client’s needs, circumstances and objectives when deciding whether an investment or action is appropriate. That test is suitability . A correct suitability decision does not guarantee profit, because suitable investments can still lose value.

Memorize

  • Before acting, make a reasonable inquiry into the client’s investment experience, risk and return objectives and financial constraints, and keep it up to date.
  • When acting, make sure each investment fits the client’s written objectives and constraints.
  • Whatever you buy, judge it in the context of the whole portfolio, not on its own.
  • If you manage a fund to a stated strategy or mandate, keep to it.

The duty to gather information and judge suitability falls on members who give advice in an advisory relationship. Someone who only executes a retail client’s specific instructions, or a sell-side analyst, may have no chance to judge suitability for the end client.

What goes into the policy statement?

At the start of an advisory relationship, collect the client’s financial circumstances, relevant personal data, attitude to risk and objectives. Record them in a written investment policy statement (IPS) covering risk tolerance, return requirements and all constraints (time horizon, liquidity, tax, legal and regulatory factors, unique circumstances). The IPS also sets out each party’s role and a schedule for review.

The Handbook notes that an IPS may include ESG preferences (environmental, social and governance) as a client constraint. These concerns may grow over the relationship, which is a reason to update the IPS.

A client’s risk profile is the single most important input to suitability. Pay particular attention to leverage and limited liquidity in derivatives and synthetic products, which bear directly on whether they suit the client.

Review the IPS at least annually, and before any material change to recommendations or decisions. Changes that matter include the number of dependents, tax status, health, liquidity needs and risk tolerance. An institution’s changes might be unfunded pension liabilities or a foundation’s distribution requirements. If a client withholds information about assets you do not manage, your analysis can only rest on what you were given.

What does total portfolio context mean?

Total portfolio context means you judge an investment by its place in the whole portfolio: its effect on diversification, its risk against the client’s tolerance, and its fit with the required strategy. A high-risk security alone can be a suitable holding as a small part of a diversified portfolio, or when the client’s objectives contemplate speculative investments.

What if the client asks for an unsuitable trade?

An unsolicited trade request that you know is unsuitable should wait until you have talked it through. What happens next depends on the size of the effect.

A client asks for a trade the adviser thinks is unsuitable
Unsolicited, unsuitable requestpause and discuss before trading
  • Small impact on the portfolio Memorize size or risk change is limited
    • Educate the client show how it departs from the IPS
    • Client acknowledges the discussion including that it is against the adviser's advice; then follow firm policy and proceed
  • Material impact Memorize portfolio risk or return shifts
    • Update the IPS the client sees the effect on goals
    • Client refuses to update options depend on the firm
      • Separate accountif firm policy allows
      • Reconsider the relationshipif no alternative exists

What if you run a fund to a mandate?

Managing to a mandate means managing a pooled fund or index strategy to a stated objective. Your duty is to invest consistently with that mandate, so the manager of an inflation-linked government bond fund who buys equities to chase returns is out of line. You are not responsible for judging whether the fund suits each person who buys it. Only a member with an advisory relationship takes on that responsibility.

Where do the lines fall?

SituationVerdict
An adviser puts a retiree who needs income into a leveraged fund without reviewing the IPSViolation
An emerging-market small-cap fund is 5% of a diversified, growth-oriented portfolioSuitable in total portfolio context
A European utilities fund manager moves a fifth of the fund into Asian chip makersViolation (mandate)
A client insists on a small speculative trade; the adviser explains the risk and documents the discussionAcceptable
An IPS was written six years ago and never revisited despite the client’s divorceViolation (must update)
InteractiveIs it suitable?

Try this 0 of 3

  • Reach the right outcome first time in all four advisory cases
  • Judge the risky slice right first time
  • Spot the mandate case right first time

Case 1 of 5 The 30% bet

Daniela Cruz, CFA, advises Owen Hale, 58, whose investment policy statement (IPS) was reviewed four months ago and sets a moderate risk tolerance. Owen calls and asks Daniela to put 30% of his portfolio into Virexa Bio, a loss-making biotech awaiting a single drug approval. Daniela did not recommend it and thinks the position is far too risky for his IPS.

Step 1 of 7 Advisory or mandate?

Which kind of relationship is this?

Read the case, then answer each step. 5 cases.

Know the client, judge the whole portfolio, keep to the mandate.

Compliance practices

  • Keep a written IPS for every advisory client, covering client identification, return and risk objectives, constraints (liquidity, cash flows, investable funds, time horizon, tax, legal and regulatory, preferences including ESG, proxy voting) and performance benchmarks.
  • Regular updates. Review the IPS at least annually and after major events. Document any attempt to review that circumstances prevented.
  • Suitability test policies. Encourage firm-level suitability tests that look beyond expected return: the effect on diversification, the investment’s risks against the client’s risk tolerance, and its fit with the required strategy.
Go deeper Why one security can look wrong and be right

Risk in a portfolio comes from how holdings move together, not from each holding’s volatility alone. A volatile asset that moves differently from the rest can lower the risk of the whole, or add a small amount of risk for a worthwhile return. That is why Standard III(C) says to judge the investment’s place in the total portfolio. The same logic returns in the portfolio management topic.

Go deeper The client who insists on a material unsuitable trade

If the effect is material and the client will not update the IPS, you do not simply place the trade. Some firms let the client place it in a separate unmanaged account, so it sits outside your advice. If no alternative exists, you weigh whether to continue the advisory arrangement. The decisive facts in a question are the size of the effect and whether the client was told and agreed.

Memorize this

MemorizeStandard III(C): what to know cold

SituationWhat you must do
Advisory relationshipReasonable inquiry into experience, risk and return objectives and constraints before advising or acting. Put it in a written investment policy statement (IPS). It may include environmental, social and governance (ESG) preferences as a constraint
UpdatingIPS reviewed at least annually and before material changes to recommendations or decisions. ESG concerns may grow over time: update the IPS
Judging fitEach investment against the client's needs, the investment's characteristics and the total portfolio, not alone
Unsolicited, unsuitable, small impactDiscuss, educate. Client acknowledges the discussion, including that it is against your advice. Follow firm policy, then you may proceed
Unsolicited, unsuitable, material impactUse it to update the IPS. If the client refuses: separate account if the firm allows, else decide whether to continue the relationship
Fund run to a mandateStay inside the stated objectives and constraints. Suitability for each investor is the adviser's job

Memory hook Know, fit, update: know the client, fit the whole portfolio, update every year.

Know it cold Advisory duty runs to the client's IPS. Mandate duty runs to the fund's stated mandate.

A client asks for a trade the adviser thinks is unsuitable
Unsolicited, unsuitable requestpause and discuss before trading
  • Small impact on the portfolio Memorize size or risk change is limited
    • Educate the client show how it departs from the IPS
    • Client acknowledges the discussion including that it is against the adviser's advice; then follow firm policy and proceed
  • Material impact Memorize portfolio risk or return shifts
    • Update the IPS the client sees the effect on goals
    • Client refuses to update options depend on the firm
      • Separate accountif firm policy allows
      • Reconsider the relationshipif no alternative exists

How it is asked

  1. Mandate drift

    A fund marketed as "investment-grade corporate bonds only" buys high-yield bonds. Violation?

    Yes, III(C). The fund must keep to its mandate. Trap: "returns improved".

  2. Small unsolicited request

    A client asks for 2% of a diversified portfolio in a volatile fund the adviser thinks unsuitable. Best action?

    Explain, document and, given the small impact, carry it out. Trap: "refuse all unsuitable trades".

  3. Stale IPS

    No review of a client's objectives for three years after retirement. Which Standard?

    III(C). IPS needs at least an annual review. Trap: V(C) Record Retention.

Exam traps

  • Judging a risky security unsuitable on its own. It can be suitable as part of a diversified portfolio, or when the client's stated objectives allow risk.
  • Treating every unsolicited request as forbidden, or as always fine. The answer depends on the impact on the portfolio and on discussion and documentation.
  • Applying advisory duties to a fund manager. A manager of a fund run to a mandate answers to the mandate, not each investor's personal profile.
  • Forgetting the update rule. An IPS that has not been reviewed for years, especially after a major life event, is a violation.
  • Treating the IPS as fixed. A client's environmental, social and governance (ESG) preferences can grow over the relationship, and that is a reason to update it.

Checkpoint

3 exam-style questions. About 90 seconds each.

  1. 1A fund is marketed as holding investment-grade corporate bonds only. To lift returns, its manager buys high-yield bonds. Did the manager violate the Standards?

  2. 2A client asks an adviser to place 2% of a diversified portfolio in a volatile commodity fund. The adviser believes it is unsuitable. The adviser's most appropriate action is to:

  3. 3An adviser has not reviewed a client's objectives and constraints since the client retired three years ago. This most likely violates:

Key takeaways

  • Know the client before acting, update at least annually, and judge the total portfolio.
  • Fund managers keep to the stated mandate, with no style drift.
  • Unsolicited unsuitable requests: discuss and document, with the client acknowledging that it is against your advice. If the impact is material, revisit the investment policy statement.
  • The IPS may include ESG preferences as a constraint; update it as they change.

All Ethical and Professional Standards formulas, every lesson

Practice exam-style questions on Guidance for Standard III: Duties to Clients

Questions about this lesson?

Where this comes back

Questions candidates ask

What does Standard III(C) Suitability require?

In an advisory relationship, make reasonable inquiry into the client's experience, objectives and constraints before acting, judge each investment against the total portfolio, and update the information regularly. Fund managers must stay within the stated mandate.

What should an adviser do with an unsolicited unsuitable trade request?

Hold the trade until you have discussed the concerns. If the impact is small, document the discussion and follow firm policy. If it is material, update the investment policy statement. If the client refuses, consider a separate account or the relationship.

How often should an investment policy statement be updated?

At least annually, and before material changes to recommendations or decisions. A major life event, such as a divorce, retirement or inheritance, calls for an immediate review.

Spotted an error? Tell us and we will fix it.

  1. Standard III(A): Loyalty, Prudence, and Care
  2. Standard III(B): Fair Dealing
  3. Standard III(C): Suitability
  4. Standard III(D): Performance Presentation
  5. Standard III(E): Preservation of Confidentiality

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