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Level III Core · Guidance for Standard III: Duties to Clients

Standard III(C) Suitability for CFA Level III

Updated 8 October 2026 · Fact-checked

Standard III(C) requires you to make a reasonable inquiry into a client's investment experience, risk and return objectives, and constraints before advising or acting, and to update this regularly. Every recommendation or action must be suitable for the client's stated mandate, assessed in the context of the total portfolio, and consistent with the IPS.

Understand Standard III(C): Suitability

Suitability means an investment fits the client, not just that it looks attractive. Standard III(C) asks you to know your client first. You must gather information about the client's objectives, constraints, experience and risk tolerance before you recommend or buy anything.

The main tool is the investment policy statement (IPS). It records the client's return objectives, risk tolerance (willingness and ability), and constraints such as liquidity, time horizon, taxes, legal and regulatory limits, and unique circumstances. You should use it to guide decisions. If the IPS is missing, you should help create one.

Suitability is judged at the total portfolio level, not one security at a time. A risky holding can be suitable if it is small and diversifies the whole portfolio. A safe-looking holding can be unsuitable if it concentrates risk or breaches a constraint.

Suitability is not a one-time check. You must review the client's information and the IPS at regular intervals and after major events, such as a change in wealth, family situation or goals. You must also follow any mandate: if a fund has a stated style or limits, investments must stay within it. Where the manager has discretion, the same duty applies to every action taken.

For pooled funds or an institution, the 'client' is the mandate in the fund documents. Then suitability means consistency with the stated objectives and limits, and you cannot tailor to individual investors you do not advise directly. You should also judge whether a recommendation is consistent with the client's stated risk and return objectives and any restriction the client has set, such as an ESG exclusion.

Key rules to remember

Core duty
Reasonable inquiry + IPS + suitable action + regular updates
Know the client, document objectives and constraints, act within them, and review periodically.
IPS contents (risk and return)
Return objective + Risk tolerance (willingness and ability)
Ability is driven by wealth, horizon and liquidity needs. Willingness is attitude. As a conservative convention, the lower of the two generally determines the risk tolerance used in the IPS.
IPS constraints (LTTLU)
Liquidity, Time horizon, Taxes, Legal and regulatory, Unique circumstances
These are the five constraints. Return and risk are the objectives, so the full list of IPS inputs is return, risk, then these five constraints. Check each recommended action against every constraint.
Level of analysis
Suitability is judged in the total portfolio context
Do not reject or approve a security in isolation.
Updating
Review at regular intervals and after material changes
Update the client's information and the IPS, not only the portfolio.
Mandate rule
Investments must be consistent with the stated mandate
For a fund or institution, follow the documented objectives and limits.

How to solve Standard III(C): Suitability questions

Use this sequence for any suitability vignette or essay. It keeps your answer tied to the client and to the Standard.

  1. 1Identify the client type and the mandate: individual, institution or pooled fund. Note who the client actually is.
  2. 2List the client's objectives: return goal and risk tolerance, separating willingness from ability to take risk.
  3. 3List the constraints: liquidity, time horizon, taxes, legal and regulatory, and unique circumstances such as exclusions.
  4. 4Check whether the member made a reasonable inquiry and has an up-to-date IPS or documented information. Note any change in circumstances.
  5. 5Compare the recommendation or action with the objectives and constraints, at total portfolio level.
  6. 6Decide: compliant or violation. Name the Standard III(C) element that failed, such as no inquiry, no update, or action outside the mandate.
  7. 7State the corrective action: gather information, update the IPS, rebalance within the mandate, or get client consent in writing.
  8. 8Write the answer in the command word's form: one decision plus one short justification linked to a fact in the vignette.

Quickest way: Client-fit check in four questions

When to use it: Use this on item set questions where you must pick the violation or the correct action quickly.

  1. Did the member know the client's objectives, constraints and experience, and is it current?
  2. Does the action fit the IPS or mandate, including every constraint?
  3. Is it judged in the total portfolio, not alone?
  4. Did something change that needed an update or review?
  5. Pick the option that fixes the failed question. Reject options that rely on client enthusiasm, past returns or a single security's merit alone.

Common mistakes in Standard III(C): Suitability

  • Judging a security as unsuitable because it is risky on its own.

    Students think of risk per security instead of the portfolio.

    Fix: Assess the effect on total portfolio risk and return. A small risky position can be suitable.

  • Using only risk tolerance and ignoring constraints.

    Risk tolerance feels like the main factor.

    Fix: Check liquidity, horizon, tax, legal and unique needs every time.

  • Treating the IPS as a one-time document.

    The IPS is written at the start, so it seems finished.

    Fix: Remember the duty to update at regular intervals and after material changes in the client's situation.

  • Letting the client's request override suitability without any process.

    Students assume the client always decides.

    Fix: Explain the risks, compare against the IPS, document the discussion, and update the IPS if objectives truly changed.

  • Confusing willingness and ability to take risk.

    Both words describe risk tolerance.

    Fix: Willingness is attitude. Ability is financial capacity. The more conservative (lower) of the two generally determines the risk tolerance used in the IPS. This is a conservative convention, so state it as the approach you apply.

  • Applying individual-client logic to a pooled fund.

    Suitability is taught with person-level examples.

    Fix: For funds, test consistency with the stated mandate and limits in the fund documents.

Worked examples

Example 1

An adviser meets a new client, a 58-year-old who plans to retire in 5 years and needs to fund a home purchase in 2 years. The adviser, impressed by the client's enthusiasm for technology, places 70% of the portfolio in a single small-cap technology fund without writing an IPS. Which part of Standard III(C) is violated, and what should the adviser do?

Show the solution
  1. Identify the client facts: short horizon, a near-term liquidity need, and retirement in 5 years. These limit ability to take risk.
  2. Compare the action: 70% in one small-cap fund is highly concentrated and volatile, and does not fit the liquidity and horizon constraints.
  3. Check process: no IPS and no documented inquiry into objectives and constraints, so reasonable inquiry was not made.
  4. Conclude: violation of Standard III(C) for failing to gather information, failing to build an IPS, and making an unsuitable recommendation at total portfolio level.
  5. Corrective action: gather full client information, write an IPS covering objectives and constraints, set a diversified allocation with enough liquid assets for the home purchase, and document the client's consent.

Answer: The adviser violated Standard III(C): no reasonable inquiry, no IPS, and a concentrated, high-volatility position that conflicts with the client's short horizon and near-term liquidity need. The adviser should create an IPS and rebalance to a diversified, suitable portfolio.

Example 2

A portfolio manager runs a pooled fund whose documents state a mandate of investment-grade government and corporate bonds only. The manager believes a small allocation to high-yield bonds will lift returns and holds 5% in them, without notifying investors. Does this breach Standard III(C)? Give a justification.

Show the solution
  1. Identify the client: the pooled fund's investors, whose expectations are set by the fund documents.
  2. Identify the mandate: investment-grade bonds only.
  3. Compare the action: high-yield bonds fall outside the stated mandate.
  4. Test the defence: a small size or a good diversification effect does not change the mandate, because suitability for a pooled fund means consistency with its stated objectives and limits.
  5. Conclude and correct: it is a breach. The manager should sell the position or obtain the proper change to the mandate with disclosure to investors.

Answer: Yes. The 5% high-yield holding is outside the stated mandate, so the action is not consistent with the fund's objectives and limits. The manager should exit the position or follow the formal process to amend the mandate.

Exam tips

  • In essay sets, start with the decision word the command asks for, such as 'Violation' or 'Not a violation', then give one reason tied to a vignette fact.
  • Name the failed element: inquiry, IPS, constraint fit, total portfolio view or update. Naming it earns the point faster than general talk.
  • Watch for changes in the client's life in the vignette. They signal an update duty.
  • In item sets, wrong options often judge a security alone or rely on the client's wish. Eliminate these first.
  • If the client is a fund, look for the mandate in the text and test against it.

Standard III(C): Suitability in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Standard III(C): Suitability: frequently asked questions

What does Standard III(C) require in simple terms?

You must know your client's objectives, constraints and experience before acting. Your recommendations and actions must fit them and the IPS, judged at total portfolio level. You must also update this information regularly.

Is an IPS mandatory under Standard III(C)?

The Standard expects you to make a reasonable inquiry and to consider the client's circumstances, and an IPS is the usual way to record them. If none exists, you should work with the client to create one or otherwise document the information.

Can a risky investment ever be suitable?

Yes. Suitability is judged in the total portfolio context. A risky holding can be suitable if its size and role fit the client's objectives, risk tolerance and constraints.

How is suitability treated for a pooled fund?

The member cannot tailor advice to each investor. Suitability means that investments are consistent with the stated mandate and limits in the fund documents.

How often should client information be updated?

Update it at regular intervals and after material changes such as a change in wealth, family situation or goals. Review the IPS at the same time.