CFA Level I Exam · Guidance for Standard III: Duties to Clients

Standard III(C) Suitability for CFA Level I

Updated 7 October 2026 · Fact-checked

Standard III(C) Suitability requires you to make a reasonable inquiry into a client's investment experience, risk and return objectives, and constraints, and update that information regularly. You must act only when an investment is suitable in the client's stated mandate and judged in a portfolio context. Exam answers hinge on the IPS and portfolio fit.

Understand Suitability

Standard III(C) deals with a simple idea: advice and actions must fit the client. Before you recommend or buy anything, you need to know who the client is. That means their investment experience, their objectives and their constraints.

The Standard has several parts. When in an advisory relationship, members and candidates must make a reasonable inquiry into the client's investment experience, risk and return objectives, and financial constraints before making a recommendation or taking investment action. They must update this information regularly, and again when something material changes. The Handbook suggests reviewing at least annually as good practice, but the Standard itself says "regularly". When a member manages a pooled fund with a stated mandate, the mandate and fund objectives drive suitability rather than an individual investor's profile.

Suitability is judged in a portfolio context, not security by security. A risky holding can be suitable if it improves the overall risk and return profile of the portfolio. A product that looks safe alone can be unsuitable if it concentrates risk the client already has. So never reject an investment just because it is volatile; ask how it fits the whole portfolio.

The investment policy statement (IPS) is the written record of this work. It sets out objectives (risk and return), constraints (liquidity, time horizon, taxes, legal and regulatory factors, unique circumstances), and the client's risk tolerance. A good IPS also says how and when it will be reviewed. You should follow it, and you should recommend changes if the client's circumstances change.

The Standard also covers the process: judge the client's risk tolerance (both willingness and ability to take risk), consider whether the client has a clear understanding of the risk, and follow any restrictions the client sets. If a client's instructions would be unsuitable, you should explain your concerns and document the discussion. Where a fund has a stated mandate, you must make sure investments fit that mandate.

Key formulas to remember

Core duty: Reasonable inquiry → suitable recommendation → regular update; Gather client information first, act only on what fits, and revisit it regularly (the Handbook suggests at least annually as good practice) and on material change.
Information to gather: Experience + risk and return objectives + constraints (liquidity, time horizon, tax, legal and regulatory, unique circumstances); These are the standard IPS inputs. Risk tolerance combines willingness and ability to take risk.
Suitability test: Suitable = fits the client's IPS and improves or fits the whole portfolio; Judge in a portfolio context, not by looking at one security alone.
Update rule: Update client information regularly and after material changes; The Standard says "regularly"; the Handbook suggests at least annually as good practice. Do not wait for the client to raise a change. A new job, retirement or inheritance can trigger a review.
Mandate rule: Pooled funds: follow the stated mandate; If you manage to a fund mandate, the mandate defines suitability, not any one investor's profile.

How to solve Suitability questions

Use this method for any Standard III(C) question. It keeps you focused on the facts that decide the answer.

1Identify the relationship: individual advisory client, or a fund or pooled mandate. This tells you whose objectives govern.
2Find what the member knows about the client: objectives, constraints, experience, risk tolerance. Note anything missing.
3Check the IPS or mandate. Does the action or recommendation fit it? Any breach points to a violation.
4Ask whether the question is about one security or the whole portfolio. Judge in portfolio context.
5Check timing: was information updated regularly and after a material change?
6Check process: did the member do a reasonable inquiry before acting, and document concerns if the client insisted on something unsuitable?
7Eliminate the two options that ignore client information, judge a security in isolation, or rely only on past performance or the member's own view. Pick the one that follows the Standard.

Quickest way: Client-first elimination

When to use it: Use this when you have about 90 seconds and the stem describes a recommendation or a portfolio action.

Underline the client facts in the stem: objective, horizon, liquidity need, risk tolerance, mandate.
Ask one question: did the member base the action on those facts?
Remove any option that judges a single security alone, or that relies on the client's past instruction without checking current circumstances.
Remove any option that skips the inquiry or the update.
Choose the option that matches the IPS or mandate and considers the total portfolio.

Common mistakes in Suitability

Rejecting a high-risk investment just because it is risky.
Students think suitability means avoiding volatility.
Fix: Judge it in a portfolio context. A risky asset can be suitable if it fits the client's objectives and the overall portfolio.
Treating willingness to take risk as the whole of risk tolerance.
Clients often say they are comfortable with risk.
Fix: Risk tolerance has two parts: willingness and ability. Ability depends on constraints such as liquidity, horizon and wealth. Under the IPS and portfolio management curriculum, when the two conflict, the more conservative (lower) of the two governs. Standard III(C) itself does not state this rule.
Confusing a pooled fund mandate with an individual client's needs.
Both involve suitability, so students apply the same test.
Fix: For a fund, follow the stated mandate. Do not tailor investments to one investor's profile inside a pooled fund.
Assuming the IPS only needs updating when the client asks.
Students see it as the client's document.
Fix: The member must update client information regularly and after material changes, and suggest IPS changes where needed. The Handbook suggests at least annually as good practice.
Following a client's instruction that clearly conflicts with their stated objectives without comment.
Students think the client always decides.
Fix: Explain the concern, document the discussion and the client's decision, and revisit the IPS. Do not just act silently.
Mixing up III(C) Suitability with V(A) Diligence and Reasonable Basis.
Both relate to recommendations.
Fix: V(A) is about research quality behind a recommendation. III(C) is about fit to the client. Ask which one the stem is testing.

Worked examples

Example 1

A portfolio manager at a firm in Frankfurt advises a retired client whose IPS states a need for stable income and low risk, with a horizon of ten years. The manager buys a small position in a volatile emerging market equity fund because it should improve diversification. The manager did not review the client's IPS, risk tolerance or constraints before buying, and the client was not told. Has the manager violated Standard III(C)?

A. No, because the position is small.

B. No, because it improves diversification.

C. Yes, because the manager did not check it against the client's objectives and constraints.

Show the solution

Identify the relationship: an advisory client with an IPS.
Facts: stable income, low risk, ten-year horizon.
Diversification can justify a risky asset in a portfolio context, but only if it fits the client's objectives, risk tolerance and constraints.
The stem says the manager did not review the IPS, risk tolerance or constraints before buying, so there was no reasonable inquiry for this action.
Option A uses size as the test. Option B uses only one benefit. Neither checks the IPS.

Answer: C. The manager acted without reviewing the client's IPS, risk tolerance or constraints, so the fit to the client's objectives and constraints was never established and the suitability duty was not met.

Example 2

An adviser in Singapore last reviewed a client's investment policy statement three years ago. The client has since sold a business and now holds a large cash balance. The adviser keeps managing the portfolio under the old IPS. According to Standard III(C), the adviser should most appropriately:

A. continue, as the IPS was approved by the client.

B. update the client's information and the IPS because of the material change.

C. wait for the client to request a review.

Show the solution

Standard III(C) requires updating client information regularly and when material changes occur.
A business sale and a large new cash balance are material changes in wealth, liquidity and perhaps risk capacity.
The IPS is now out of date. A three-year gap also falls well short of the Handbook's suggested practice of reviewing at least annually, and the material change alone calls for an update now.
Option A relies on old approval. Option C leaves the update to the client, but the Standard places the duty to update on the member.

Answer: B. The adviser should update the client information and the IPS now.

Exam tips

Look for the trigger words: IPS, mandate, risk tolerance, constraints, regular review, portfolio context. They usually point to III(C).
If the stem says a security is risky but the portfolio is diversified, lean toward the portfolio-context answer.
Check whether the client is an individual or a pooled fund. The mandate governs a fund.
Questions often hide a violation in timing: no update after a material change, or no review for a long period.
Keep V(A) and III(C) separate. Research quality is V(A). Fit to the client is III(C).

Practice questions from Guidance for Standard III: Duties to Clients

Suitability in other exams

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

Suitability: frequently asked questions

What does Standard III(C) Suitability require?

You must make a reasonable inquiry into a client's experience, risk and return objectives, and constraints before recommending or acting. You must update that information regularly and make only suitable recommendations. Suitability is judged in a portfolio context.

How often must client information be updated under III(C)?

The Standard requires updating regularly, and also after material changes in the client's circumstances. The Handbook suggests reviewing at least annually as good practice. Examples of material changes include a job loss, retirement, inheritance or business sale. The exam often tests missing updates.

What is the role of the investment policy statement in suitability?

The IPS records objectives, constraints and risk tolerance, and guides every decision. Actions that conflict with it suggest a suitability issue. A good IPS is reviewed regularly.

What does portfolio context mean in suitability questions?

It means you judge an investment by how it affects the whole portfolio, not by its standalone risk. A volatile asset may be suitable if it fits the client's objectives and diversifies the portfolio. A seemingly safe asset can be unsuitable if it adds concentrated risk.