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Lesson 5 of 5 10–15% of the exam

Standard III(E): Preservation of Confidentiality

Keep information about current, former and prospective clients confidential, with three exceptions: the information concerns illegal activity by the client, disclosure is required by law, or the client permits it. Sharing client information with the CFA Institute Professional Conduct Program for an investigation is not a breach.

4 min cram, 24 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(D): Performance Presentation

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(E), recommend compliance practices and identify compliant conduct. Expect "may the adviser disclose this?" items, often with a former or prospective client or suspected illegal activity. The usual wrong answers say confidentiality ends with the relationship, or that helping an investigation is a breach.

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(E) require?

You must keep information about current, former and prospective clients confidential. This client confidentiality duty applies when you learn the information because of your special ability to handle part of the client’s business or personal affairs, and the information arises from or is relevant to that part of the client’s affairs.

Memorize

The duty does not depend on the client’s status. It protects former and prospective clients as well as current ones, and it continues after the relationship ends. A former client can authorize disclosure expressly, and you may then follow the terms of that authorization.

What are the three exceptions?

You may disclose confidential information only when:

  1. Illegal activity. The information concerns illegal activities on the part of the client (the illegal activity exception ). You may even have an obligation to report them to the authorities.
  2. Required by law. Disclosure required by law , for example a court order or regulatory demand, overrides confidentiality.
  3. Permission. The client or prospective client gives client permission to disclose.
May client information be disclosed?
Information about a clientdefault: keep it confidential
  • Who is covered Memorize status does not matter
    • Current clients
    • Former clients the duty survives the relationship
    • Prospective clients including those who never signed
  • Three exceptions Memorize any one is enough
    • Illegal activity by the client may need to report to the authorities
    • Required by law for example a court order
    • Client or prospect permits it express authorization
  • Not a breach Use it PCP investigations
    • CFA Institute Professional Conduct Program treat it as an extension of yourself

Two cautions apply to the exceptions. If the law requires you to keep information confidential even when it concerns illegal conduct, do not disclose. And laws that restrict the flow of information between departments of a financial institution can make an internal disclosure a breach. When in doubt, ask your employer’s compliance staff or legal counsel before disclosing.

What about CFA Institute investigations?

Standard III(E) is not meant to stop you cooperating with a Professional Conduct Program investigation . When permissible under applicable law, treat the Program as an extension of yourself if it asks for client information in an inquiry into your own conduct. You are encouraged to cooperate with inquiries into others as well. Information given to the Program is kept in strict confidence, and forwarding it is not a violation.

What about vulnerable investors?

A vulnerable investor is a client who may be affected by diminished capacity or at risk of financial exploitation. The Handbook asks you to watch for red flags of both. Examples might be a client who repeatedly forgets recent instructions, or sudden unexplained withdrawals pressed by a third party.

Use it

  • Best practice: a secondary contact . Ask the client at account opening to name one, such as a trusted family member or a legal adviser, so you know whom to approach if concerns arise.
  • Limited disclosure may be allowed. Where it is legally permissible, telling that person limited information about a vulnerable client does not violate III(E).
  • Document such conversations.
Vulnerable investors under III(E)
A client who may lack capacity or be exploiteddiminished capacity or financial exploitation
  • Watch for red flags Use it signs of diminished capacity or financial exploitation
  • Best practice: a secondary contact Memorize trusted family member or legal adviser, set up at account opening
  • Limited disclosure may be allowed Memorize where legally permissible; it does not violate III(E)
  • Document the conversation Memorize record what was said and to whom

Firms support this with practices of their own: follow the firm’s vulnerable-client policies, ask for a secondary contact on every account, train staff on diminished capacity, follow internal reporting procedures, and add extra compliance review of those accounts.

How do you protect information in practice?

Information security is part of the duty because accidental disclosure is as damaging as deliberate sharing. You are not expected to become a security expert, but you must understand and follow your employer’s policies on electronic communication and on storing client data on laptops, phones and portable drives. If the firm has no procedures, encourage it to develop them. Use firm-supported channels and talk to clients about which ones suit confidential information.

The simplest and most conservative approach is not to disclose anything received from a client except to colleagues who also work for that client. If you want to share something outside the confidential relationship that does not involve illegal activity, ask yourself in what context the client gave it, and whether it is background that will help you serve the client better.

Where do the lines fall?

SituationVerdict
An adviser tells friends at a party about a former client’s large inheritanceViolation
An adviser reports a client’s apparent money laundering to the authorities as local law requiresNot a violation (illegal activity; required by law)
A manager shares a prospect’s financial details with a colleague who needs them to prepare a proposalAcceptable within the firm, for the client’s benefit
A member gives client records to CFA Institute’s Professional Conduct staff during an inquiryNot a violation
A laptop with unencrypted client files is left unattended in a public placeRisk of a violation. Firms need security procedures
InteractiveMay I disclose?

Try this 0 of 3

  • Clear all five cases right first time
  • Get the party story right first time
  • Get the inquiry right first time

Case 1 of 5 The party story

Marta Silva, CFA, is a wealth manager at Brightwater Partners. At a friend's dinner party she tells the table that Hugo Laine, a client who moved his account away two years ago, "inherited about EUR 12 million and still drives a ten-year-old car". Hugo never agreed to the story being shared, and nothing about the inheritance is unlawful.

Step 1 of 5 Is the person covered?

Hugo left Brightwater two years ago. Does Marta still owe him confidentiality?

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

Former and prospective clients count too; only three exceptions.

Compliance practices

  • Communicate with clients through secure, firm-supported channels and review privacy protections regularly.
  • Use access controls and encryption, and follow the firm’s rules for devices and storage.
  • Train all staff who touch client records, including receptionists and associates, not only investment professionals.
  • Know the privacy and disclosure laws that apply to you, and consult compliance or legal counsel before any doubtful disclosure.
  • For vulnerable clients, follow the practices in the previous section.
Go deeper Confidentiality, whistleblowing and Standard I(A)

Standard I(A) says to follow the stricter of the law and the Code and Standards. In confidentiality cases that means checking local law first. Some jurisdictions require you to report a client’s crime, which fits the exceptions. Others protect client secrecy even about crime, and then you must stay silent. The Standards do not oblige you to report a client to the authorities by themselves, but they permit it when the information concerns illegal activity.

Go deeper Data protection as a firm-wide duty

Modern confidentiality failures are rarely a quiet word at a party. They are mislaid devices, mis-addressed emails, shared passwords and unsecured cloud folders. Because anyone with access can cause a breach, the compliance practices stress firm policy and training for everyone, not only the portfolio managers.

Memorize this

MemorizeStandard III(E): what to know cold

TopicThe rule
Who is coveredCurrent, former and prospective clients
Exception 1The information concerns illegal activity by the client
Exception 2Disclosure is required by law
Exception 3The client or prospect permits it
CFA Institute PCPProviding client information for an investigation into your own conduct is not a breach
Safest practiceShare only with colleagues who also work for the client. If in doubt, ask compliance or legal counsel
Vulnerable investorSet up a secondary contact (trusted family member, legal adviser) at account opening. Limited disclosure may be allowed where legally permissible; document it

Memory hook Three gates, and they are all open or shut for a reason: crime, court, consent. No gate, no sharing (apart from limited, documented disclosure about a vulnerable client).

Know it cold Does an exception apply? If none does, keep it confidential, whatever the client's status.

May client information be disclosed?
Information about a clientdefault: keep it confidential
  • Who is covered Memorize status does not matter
    • Current clients
    • Former clients the duty survives the relationship
    • Prospective clients including those who never signed
  • Three exceptions Memorize any one is enough
    • Illegal activity by the client may need to report to the authorities
    • Required by law for example a court order
    • Client or prospect permits it express authorization
  • Not a breach Use it PCP investigations
    • CFA Institute Professional Conduct Program treat it as an extension of yourself
Vulnerable investors under III(E)
A client who may lack capacity or be exploiteddiminished capacity or financial exploitation
  • Watch for red flags Use it signs of diminished capacity or financial exploitation
  • Best practice: a secondary contact Memorize trusted family member or legal adviser, set up at account opening
  • Limited disclosure may be allowed Memorize where legally permissible; it does not violate III(E)
  • Document the conversation Memorize record what was said and to whom

How it is asked

  1. Former client

    A manager tells a reporter, without naming the client, about a former client's sale proceeds, but the client is identifiable. Violation?

    Yes, III(E). Former clients are covered. Trap: "no longer a client".

  2. CFA Institute inquiry

    A member gives client records to the Professional Conduct Program during an investigation. Violation?

    No. PCP cooperation is allowed. Trap: "every client must consent".

  3. Vulnerable client

    An adviser sees signs that an elderly client can no longer manage her affairs. The client named a niece as a secondary contact at account opening. May the adviser speak to the niece?

    Yes, limited disclosure may be allowed where legally permissible, and it does not violate III(E). Document the conversation.

  4. Which disclosure is not allowed?

    Which situation does not permit disclosure?

    A competitor's request for a reference on the client. The three exceptions are illegal activity, law and consent.

Exam traps

  • Thinking confidentiality ends when the client leaves. The duty covers former clients.
  • Thinking cooperating with a CFA Institute investigation breaches confidentiality. It does not.
  • Forgetting prospective clients. They are covered from the first conversation.
  • Disclosing because the information seems harmless or has been requested by a third party. Only the three exceptions apply, besides the limited, documented disclosure the Handbook allows for a vulnerable client.
  • Thinking you can never speak to anyone about a vulnerable client. Limited disclosure may be allowed where legally permissible, and it is documented.

Checkpoint

3 exam-style questions. About 90 seconds each.

  1. 1A wealth manager tells a reporter, without naming anyone, that "a well-known former client of ours just sold the family company for EUR 200 million". The description identifies the client. Did the manager violate the Standards?

  2. 2During a Professional Conduct Program investigation into a member, the member provides CFA Institute with client records relevant to the inquiry. Did the member violate the Standards?

  3. 3Which situation does not permit disclosure of confidential client information under Standard III(E)?

Key takeaways

  • Keep current, former and prospective clients' information confidential.
  • Three exceptions: illegal activity, disclosure required by law, client permission.
  • Cooperating with a CFA Institute Professional Conduct Program investigation is allowed.
  • For vulnerable investors, set up a secondary contact at account opening; limited, documented disclosure may be allowed where legally permissible.

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

When can a CFA member disclose confidential client information?

Only when the information concerns illegal activity by the client, when disclosure is required by law, or when the client or prospective client permits it. When in doubt, consult compliance or legal counsel first.

Does confidentiality apply to former clients?

Yes. The duty covers current, former and prospective clients, and it continues after the relationship ends. A former client can authorize disclosure expressly, but otherwise the information stays confidential.

Can I share client information with CFA Institute?

Yes, when permissible under applicable law. Treat the Professional Conduct Program as an extension of yourself when it asks for information in an investigation into your conduct. Providing it is not a breach of Standard III(E).

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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Questions on Standard III(E): Preservation of Confidentiality

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