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Confidentiality, conflicts of interest, second opinions and corporate financial advice

ICAN Professional, Advanced Audit, Assurance and Forensics. Syllabus area A, laws and regulations on audit and assurance engagements

18 min read · Updated 5 November 2026

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In this part

Clients tell their auditors things they would not tell the public. They do so because they trust the auditor to keep the information private. That trust is the basis of the audit, and the duty of confidentiality protects it. The duty has limits: the law may demand disclosure, and a professional may have a right or duty to speak.

This topic also deals with conflicts of interest between firms and clients, and between competing clients, with second opinions, with when a firm should consult others, and with corporate finance advice.

It covers the rule and its three exceptions, the factors in deciding whether to disclose, improper use of information, working papers, the two types of conflict and the safeguards, the second opinion, the occasions when a matter must be referred for consultation, and the advice a firm may and may not give on takeovers and share issues.

Examiners test confidentiality and conflicts in scenarios, and a second opinion was set in a recent diet as a 7-mark requirement.

In 30 seconds

Confidential information may be disclosed only if the law permits it and the client consents, if the law requires it, or if there is a professional duty or right to disclose that the law does not prohibit. Money laundering suspicion must be reported even if it proves wrong, and the reporter is protected. Information must never be used for personal advantage, such as insider dealing.

Working papers belong to the accountant, and a best-interest approach applies to requests from authorities. Conflicts arise between firm and client, and between competing clients; the test is whether a reasonable and informed third party would think judgement is affected, and safeguards include disclosure, separate teams, Chinese walls and declining work.

A second opinion needs the client’s permission to contact the existing auditor, and if refused the member must decline. Matters should be referred for consultation where standards are disputed, laws of another jurisdiction are involved, or the issue is complex. Audit firms must not promote, deal in or underwrite an audit client’s shares.

The duty of confidentiality

The Institute of Chartered Accountants of Nigeria (ICAN) Code applies the International Ethics Standards Board for Accountants (IESBA) rule. Confidentiality is a fundamental principle of professional behaviour: information from professional work must not be disclosed or used unless:

  1. disclosure is permitted by law and the person to whom the duty is owed has consented;
  2. disclosure is required by law; or
  3. there is a professional duty or right to disclose, when the law does not prohibit it.

The reason is that an auditor needs full and frank information from the client. If the client is not sure that it will stay confidential, the client may hold something back.

Disclosure permitted by law and authorised by the client

The auditor asks the client’s authority before giving confidential information to a third party. Examples are a report to a bank on compliance with a loan covenant, and a report to a stock exchange on listing rules.

Disclosure required by law

Where the law requires it, the law overrides the duty of confidentiality. ICAN’s Code gives these illustrations: producing documents or evidence in legal proceedings, and telling the proper public authorities about infringements of the law that come to light. The leading example is money laundering.

A member must report to the authorities if he knows or has reason to suspect that a client has committed terrorism, drug trafficking or any other money laundering activity. The Act requires a report of mere suspicion, even if the suspicion proves false. The law protects the accountant from being sued by the client.

Professional duty or right to disclose, when the law does not prohibit it

Illustrations in the ICAN Code are:

  • complying with a quality review by a member body or professional body
  • responding to an enquiry or investigation by a member body or regulator
  • protecting the member’s professional interests in legal proceedings, such as defending a claim of negligence
  • complying with technical standards and ethics requirements
  • similar cases

Factors in deciding whether to disclose

  • whether the interests of all parties, including third parties, could be harmed if the client consents to disclosure;
  • whether all relevant information is known and substantiated, so far as practicable. Where facts are unproved or incomplete, judgement decides what type of disclosure, if any;
  • the type of communication expected and to whom it goes. The member should be satisfied that the recipients are appropriate; and
  • if in doubt about a right or duty to disclose, seek legal advice or consult ICAN.

Improper use of information

A member must not use, or appear to use, confidential information for personal advantage or for a third party’s advantage. He should not deal in the shares of a client in a way that looks like using professional information (insider dealing).

Also, where confidential information from Client 1 affects an assurance report on Client 2, he cannot give an opinion on Client 2 that he knows from this other source to be untrue. If he is to continue as auditor to Client 2, he must carry out normal audit procedures to get the same information from another source. Nothing may be disclosed outside the firm, and the auditor may ultimately have to resign.

Working papers

Working papers contain confidential client information and belong to the accountant. They should not normally be shown to outsiders. If a government agency, such as the tax authority, asks to see the papers on a client, the accountant should act in the client’s best interests: if release is in the client’s best interests and the client does not object, they may be released.

The authorities are likely to have legal powers to obtain them anyway, and a lack of co-operation may increase suspicion. If the authorities ask to see a sample of papers from a firm, not for any one client, because they doubt the quality of the practice’s work, a best-interest approach applies again. A practical compromise is for an independent accountant to review the work and report to the authorities.

Conflicts of interest

Conflicts arise between the member and a client, and between competing clients. In both cases, the test is whether a reasonable and informed third party would consider the conflict likely to affect the judgement of the member or the firm.

Between the member and the client

Members should not accept or continue an engagement where there is a conflict between the firm and the client. Examples: the member competes directly with the client, or the member gets a commission from a third party for introducing a client.

Between competing clients

A firm might act for two clients that compete directly. It owes confidentiality to both, and will not disclose one’s information to the other. Where accepting or continuing an engagement would materially prejudice the interests of any client, the appointment should not be accepted or continued. In other cases, safeguards might include:

  • considering carefully whether to accept an engagement from a new client that competes directly with an existing client, and declining if appropriate;
  • using different staff on the two engagements;
  • full and frank disclosure to the clients, with steps to manage the conflict;
  • procedures to prevent access to information, such as physical separation of teams and confidential, secure data filing, known as Chinese walls;
  • clear guidelines on security and confidentiality, and confidentiality agreements;
  • regular review of the safeguards; and
  • advising one or both clients to seek independent advice.

The procedures a firm should have

A firm should identify possible conflicts, evaluate the problem, and manage or avoid the conflict where needed. Procedures include regular review of relationships with all clients and considering conflicts before taking on a new client.

If a conflict is found, the firm may notify the clients and discuss it, set up Chinese walls (different staff, in different offices, communicating only officially), or consider resigning from or declining one of the competing engagements.

Second opinions

A second opinion arises when a company asks an ICAN member who is not its auditor for an opinion on how an item in the financial statements should be treated. The syllabus gives one rule: the member must get the company’s permission to contact the company’s auditor. If permission is refused, the member must refuse to act.

Background: The reason for the rule is the risk of opinion shopping, where a client looks for a firm that will give the answer it wants. A second opinion is legitimate when the client genuinely needs advice. It is unethical when the aim is to undermine the auditor.

Before accepting, the adviser should therefore consider:

  • contact with the existing auditor, with the client’s permission, to understand the facts and the reason for disagreement
  • whether it has all the facts, including management’s case and the auditor’s technical reasoning
  • why the client is asking
  • whether the opinion rests on the same facts and assumptions the auditor had
  • whether it has the competence to give a credible opinion

The self-interest and advocacy threats must be addressed before acceptance.

When to refer a matter for consultation

International standards on quality management require firms to seek help from people with the right knowledge and skill. The situations in which to consult should be part of the firm’s quality control. Regardless of that, a matter should be referred for consultation when:

  1. the client believes that complying with an International Financial Reporting Standards (IFRS) requirement will conflict with the objective of the financial statements, to avoid bias that might affect objectivity;
  2. there is a difference of opinion with a regulator on IFRS or another accounting issue;
  3. there is a difference of opinion between member firms providing accounting, joint audit or other services on an engagement;
  4. there is a material disagreement about the treatment of an account balance against global IFRS requirements, where the law or standard is unclear;
  5. the issue turns on the local laws of a jurisdiction other than the firm’s own; or
  6. a complex transaction needs judgement or expert consultation, especially where the firm lacks the skill, since an objective view reduces errors and supports consistency and compliance.

Corporate financial advice

Some corporate finance services create such significant advocacy and self-review threats that the work should not be taken on. Audit firms shall not:

  • promote, deal in or underwrite an audit client’s shares; or
  • give corporate finance advice to an audit client where the usefulness of the advice depends on a particular accounting treatment or presentation in the financial statements being audited.

In other cases, safeguards such as making no management decisions, an independent review of the audit or corporate finance work, and using people who are not on the audit team should be considered.

Takeover bids and share issues

Where clients are involved in a contested takeover bid, the auditors may find themselves acting for both sides. The firm may be unable to give objective advice in the best interests of both parties, and may hold confidential information about each, which risks leaking to the other. The guidelines are:

  • in principle a firm may act for both parties, but should not be the sole or main adviser to both;
  • if the firm holds material confidential information and its position is questionable, it should take advice from the proper financial regulator, such as the stock exchange or the national market regulator; and
  • similar conflicts arise on share issues to the public, where the accountants may advise both the issuing company and potential investors.

The rules in more depth

Why the law can override confidentiality

Confidentiality exists to help the audit work, not to hide wrongdoing. Where the public interest in detecting serious crime outweighs the private interest in secrecy, the law steps in. That is why money laundering reports are compulsory and protected: if auditors could be sued for reporting wrong suspicions, they would stay silent.

Why Chinese walls only work if they are real

A wall is more than a policy. It needs different people, separate offices or secure files, and limits on contact. If the same partner supervises both clients, the wall is only on paper, and the firm cannot claim it has managed the conflict.

Why second opinions need the auditor’s involvement

An outsider who sees only the client’s side of a disagreement will tend to give the client’s answer. Contact with the existing auditor makes sure the adviser sees the full facts. A client that refuses is more likely to be shopping for an opinion, so refusal means the member must decline.

Worked example: three requests in a week

Scenario. Peters and Co receives three matters. (1) Gamma Foods Ltd, audited by another firm, asks for a second opinion on how to treat a large revenue contract. It insists that Peters must not contact its auditors. (2) Peters audits Alpha Bakers Ltd, and a direct competitor, Beta Breads Ltd, invites it to audit Beta too.

(3) A Peters audit manager, having learned of a planned merger of Alpha from the audit, wants to buy Alpha shares for his wife.

  1. Second opinion. The member must obtain permission to contact the existing auditor. Gamma has refused, so Peters must refuse to act. The refusal also suggests a risk of opinion shopping.
  2. Competing client. The test is whether a reasonable and informed third party would think judgement is affected. If the engagement would materially prejudice either client, decline. Otherwise, safeguards: tell both clients, use different teams and offices, set up Chinese walls, agree confidentiality rules and review them regularly. Peters may decline Beta.
  3. Share purchase. Using confidential information for personal advantage, or that of a third party, is improper, and buying shares on the strength of merger news is insider dealing. The manager must not deal, and the firm should deal with it as a disciplinary matter.
  4. Conclusion. Decline Gamma, assess and probably manage or decline Beta, and stop the share purchase.

How to score full marks

  • For confidentiality questions, start with the three conditions. Law permits and client consents; law requires; professional duty or right. Give an example of each.
  • Name the exceptions for money laundering. Mere suspicion must be reported, and the reporter is protected.
  • For conflicts, state the test. “Reasonable and informed third party”, then give the safeguards in order of strength: disclose, separate teams, Chinese walls, decline or resign.
  • For second opinions, give the concept, the rule and the factors. Concept; permission to contact the auditor or decline; then the factors: facts, motive, assumptions and competence. Each earns a mark.
  • For consultation questions, give the occasions with a reason. Disputed standards, regulators, other jurisdictions, complexity.
  • For corporate finance, remember the two prohibitions. No promoting, dealing or underwriting; no advice that depends on an accounting treatment.
  • Time. Spend time in proportion to marks and apply each rule to a fact in a scenario.

Common mistakes in the exam

  • Saying confidentiality is absolute.
  • Saying a money laundering report needs proof. Suspicion is enough.
  • Forgetting that working papers belong to the accountant, and that a best-interest approach applies.
  • Setting up a Chinese wall without different staff.
  • Accepting a second opinion without the client’s permission to contact the auditor.
  • Treating a second opinion as always wrong. It is legitimate if the motive is genuine and the facts are complete.
  • Allowing the firm to underwrite an audit client’s shares with a safeguard. It is prohibited.
  • Saying a firm may never act for both sides in a takeover. It may, but not as sole or main adviser to both.

Quick revision

  • Disclosure allowed: law permits and client consents; law requires; professional duty or right. Doubt: legal advice or ICAN.
  • Do not use information for personal advantage. Do not deal in client shares.
  • Working papers belong to the accountant. Best-interest approach; an independent accountant may review.
  • Conflicts: firm and client, competing clients. Test: reasonable and informed third party. Safeguards include Chinese walls.
  • Second opinion: permission to contact the auditor or refuse. Consider facts, motive, assumptions, competence.
  • Consult on disputed IFRS, regulator disputes, other jurisdictions, complex matters.
  • Corporate finance: do not promote, deal in or underwrite client shares; no advice dependent on accounting treatment. Takeovers: not sole adviser to both.

Practice questions

These are original questions written in the style of the ICAN exam. Try each one before you open the answer. Full model answers follow the written questions.

Recall check: multiple choice

The real ICAN paper has no multiple-choice section. These questions are for quick recall. The written questions that follow are closer to the exam.

Question 1. Which one of the following is NOT an exception to the duty of confidentiality?

  1. Disclosure required by law
  2. Disclosure permitted by law with the client’s consent
  3. A professional duty or right to disclose where the law does not prohibit it
  4. Disclosure to a friend to help them
Show the answer

D. Using or sharing information for another’s advantage is improper.

Question 2. A report of money laundering suspicion that proves false:

  1. Exposes the accountant to a client lawsuit
  2. Still leaves the accountant protected by law
  3. Is a criminal offence
  4. Must be withdrawn
Show the answer

B. The law requires reports of mere suspicion and protects the reporter.

Question 3. Working papers belong to:

  1. The client
  2. The tax authority
  3. The accountant
  4. The audit committee
Show the answer

C. They should not normally be shown to outsiders.

Question 4. Buying shares of a client on the strength of confidential information is:

  1. Allowed for staff
  2. Insider dealing and improper
  3. A permitted safeguard
  4. Allowed with partner approval
Show the answer

B. Even appearing to use information is improper.

Question 5. The test for a conflict of interest is whether:

  1. The client objects
  2. A reasonable and informed third party would think judgement is affected
  3. Fees are high
  4. Staff are junior
Show the answer

B. The same test applies to both types of conflict.

Question 6. A Chinese wall requires:

  1. A written policy only
  2. Different staff on each client, kept apart, communicating only officially
  3. One partner for both clients
  4. Disclosure to the public
Show the answer

B. Separate teams, offices or secure files.

Question 7. A member asked for a second opinion by a company should:

  1. Give it at once
  2. Obtain permission to contact the company’s auditor, and refuse to act if it is denied
  3. Contact the auditor without telling the company
  4. Charge a contingent fee
Show the answer

B. That is the rule in the syllabus.

Question 8. An audit firm shall NOT:

  1. Prepare a tax return for an audit client
  2. Underwrite an audit client’s shares
  3. Review CVs for a client
  4. Attend the annual general meeting (AGM)
Show the answer

B. Promoting, dealing and underwriting create advocacy threats.

Question 9. In a contested takeover, a firm that acts for both parties:

  1. Is always prohibited
  2. Should not be sole or main adviser to both
  3. May hold the same team for both
  4. Need not manage confidential information
Show the answer

B. If its position is questionable, it should take advice from the proper financial regulator.

Question 10. Which situation calls for referral for consultation?

  1. A routine bank reconciliation
  2. An issue turning on the laws of another jurisdiction
  3. A normal payroll test
  4. A trivial typing error
Show the answer

B. Others are disputed IFRS, regulator disputes and complex matters.

Written questions

Question 11 (10 marks). Explain the circumstances in which an accountant may or must disclose confidential client information, with examples.

Question 12 (20 marks). (a) Explain the two types of conflict of interest and the safeguards a firm may use. (8 marks) (b) Explain the restrictions on corporate finance advice to audit clients, and the position in a contested takeover. (6 marks) (c) Explain the rules on improper use of information and on working papers. (6 marks)

Question 13 (10 marks). Kelly Foods Ltd disagrees with its auditors over capitalising development costs. It asks Zenith and Co for a second opinion, wants no contact with the auditors, and offers a bonus if the opinion supports its view. Discuss the concept of a second opinion and the factors Zenith should consider, and say whether it should accept. (10 marks)

Model answers

Show the model answer to Question 11

Rule. Information from professional work may not be disclosed or used unless one of three conditions applies. (1)

Permitted by law and authorised. The auditor asks the client’s authority, for example before reporting to a bank on a loan covenant or to a stock exchange on listing rules. (2)

Required by law. Law overrides confidentiality: producing documents in legal proceedings, or telling authorities of infringements of law that come to light. Money laundering: a member must report knowledge or reasonable suspicion of terrorism, drug trafficking or other laundering, even if the suspicion proves false, and is protected from a client’s claim. (3)

Professional duty or right. To comply with a quality review, to respond to an investigation by a professional or regulatory body, to defend the member in legal proceedings such as a negligence claim, and to comply with technical and ethics standards. (2)

Doubt. In doubt, take legal advice or consult ICAN. (1)

Reason. The rule exists because the auditor needs full and frank information from the client. (1)

Show the model answer to Question 12

(a) Conflicts (8 marks). Member and client: the member should not accept or continue where a conflict exists, such as competing with the client or receiving a commission for introducing a client. (2) Competing clients: the firm owes confidentiality to both, and where an engagement would materially prejudice either, it should decline. (2) The test for both is a reasonable and informed third party.

(1) Safeguards: decline the new client; different staff; disclosure to both; Chinese walls; confidentiality guidelines and agreements; regular review; advising independent advice. (3, any six at 0.5)

(b) Corporate finance (6 marks). The firm must not promote, deal in or underwrite an audit client’s shares. Must not give advice whose usefulness depends on an accounting treatment in the statements being audited, because of advocacy and self-review threats. (2) Otherwise safeguards: no management decisions, independent review, staff outside the audit team.

(1) In a contested takeover the firm may act for both parties in principle but not as sole or main adviser to both, since it may lack objectivity and hold confidential information on each. (2) If its position is questionable, it should take advice from the proper regulator. (1)

(c) Information and working papers (6 marks). A member must not use or appear to use confidential information for personal or third-party advantage, and must not deal in client shares as an insider. (1.5) Information from Client 1 that affects a report on Client 2 cannot be disclosed, and the auditor must get the information by normal procedures, and may need to resign.

(1.5) Working papers belong to the accountant and are not normally shown to outsiders. (1) A request from authorities is met by a best-interest approach, remembering that the authorities may have legal powers. (1) For a request about firm quality, an independent accountant may review and report. (1)

Show the model answer to Question 13

Concept (2 marks). A second opinion is advice from an accountant who is not the entity’s auditor on how an item should be treated. It is legitimate when advice is genuinely needed. But it is unethical when it is opinion shopping, which means looking for a firm that will give the answer the client wants. (2)

Factors (5 marks). Permission to contact the existing auditor, so that Zenith understands the facts and the basis of disagreement. If it is refused, Zenith must decline. (2) Access to all the facts, including management’s case and the auditor’s reasoning. (1) The client’s motive: genuine technical doubt or an attempt to undermine the auditor. (1) The same facts and assumptions as the auditor had, and Zenith’s competence in the area. (1)

Decision (3 marks). Kelly has refused contact with the auditors, so Zenith must decline. The bonus linked to a favourable opinion is a self-interest threat that destroys objectivity, and it is a strong sign of opinion shopping. Zenith should decline and not reveal anything about the matter. (3)

Pathfinder on confidentiality, conflicts and second opinions

These are the ICAN Pathfinder questions that test this topic. ICAN owns the questions and the suggested solutions, so we point you to them and do not copy them. Open your Pathfinder, attempt each question under exam conditions, then check your answer against the notes above.

November Diet, 2025: Question 1(c) (7 marks)

A company in dispute with its auditors seeks a second opinion from another firm. You explain the concept and the factors the second firm should weigh before accepting.

Revise first: Second opinions

Section A of each diet (compulsory case question, 30 marks)

Section A is a single compulsory case with several requirements. It has drawn on ethics, quality management, group audits and reporting. Practise the scenario method in this topic before you attempt it.

Revise first: How to score full marks

Source: ICAN Pathfinder, Advanced Audit, Assurance and Forensics. Diets covered: May Diet, 2026 and November Diet, 2025.

Spotted a mistake? Tell us and we will check it.

Where this fits

See every past question on Advanced Audit, Assurance and Forensics and the topic each one tests in the Pathfinder question finder.

This course builds on Audit, Assurance and Forensics. After it, move on to Case Study.

All Advanced Audit, Assurance and Forensics topics

You are reading topic 10 of 64.

  1. The meaning of assurance, audit and audit-related services01
  2. Why audit is regulated: the FRC Act, FRC rules and the Audit Regulation 202002
  3. Appointment, removal, resignation, rights and duties of auditors under CAMA 202003
  4. Professional standards and how audit standards are set04
  5. Corporate governance, its codes and the audit committee05
  6. ISA 250 and money laundering06
  7. The fundamental ethical principles07
  8. Independence: threats and relationships with audit clients08
  9. Non-audit services and safeguarding independence09
  10. Confidentiality, conflicts of interest, second opinions and corporate financial advice10 here
  11. The expectations gap and the causes of audit failure11
  12. Fraud and error: ISA 24012
  13. The auditor’s liability and how to manage it13
  14. Quality management in firms: ISQM 114
  15. ISA 220, engagement partner responsibility and risk before acceptance15
  16. Changes in a professional appointment16
  17. Obtaining professional work, fees and tendering17
  18. Agreeing the terms of an engagement: ISA 21018
  19. Audit strategies and the business risk approach19
  20. The systems-based and statement of financial position approaches20
  21. Audit planning: ISA 200 and ISA 30021
  22. Audit risk and the audit risk model22
  23. Linking business risk to risks of material misstatement and responding to them23
  24. Materiality: ISA 32024
  25. Computers in auditing and IT controls25
  26. Not-for-profit and public sector audits26
  27. Audit evidence, assertions and audit sampling27
  28. Audit documentation: ISA 23028
  29. Related parties: ISA 55029
  30. Written representations and the auditor’s expert: ISA 580 and ISA 62030
  31. Reliance on internal audit and auditing accounting estimates: ISA 610 and ISA 54031
  32. Auditing specific areas of the financial statements32
  33. Auditing transaction cycles33
  34. Evaluating misstatements, opening balances and comparatives34
  35. Subsequent events: ISA 56035
  36. Going concern: ISA 57036
  37. Group audits and working with component auditors37
  38. Joint audits, the consolidation process and group communication38
  39. Review engagements and due diligence39
  40. Agreed-upon procedures and compilation engagements40
  41. Investigations and reports on internal control over financial reporting41
  42. Liquidation, bankruptcy, receivership and administration42
  43. Assurance engagements and ISAE 300043
  44. Assurance on risk, performance, value for money, systems and e-commerce44
  45. Prospective financial information: ISAE 340045
  46. Pro forma information in a prospectus: ISAE 3420, and reporting accountants46
  47. Forensic accounting, investigation and audit47
  48. Internal audit and its types48
  49. Outsourcing and service organisations: ISA 40249
  50. The auditor’s report: true and fair view and the ISA 700 structure50
  51. Key audit matters, other information and CAMA 2020 reporting51
  52. Modified opinions: ISA 70552
  53. Emphasis of matter and other matter paragraphs: ISA 70653
  54. Opening balances, comparatives and going concern in the auditor’s report54
  55. Communicating with those charged with governance and about control deficiencies: ISA 260 and ISA 26555
  56. Specialised audit reports: ISA 800 and ISA 81056
  57. The impact of information technology on audit, and audit tools57
  58. Governance, risk and compliance software, and COBIT58
  59. E-business risks, digital forensics and robotics in audit59
  60. Data protection: the NDPR and the NITDA Act60
  61. Ethical issues and the structure of the auditing profession61
  62. Transnational audits and the audit of small companies62
  63. Social and environmental reporting and assurance63
  64. Emerging technologies and the audit changes in CAMA 202064
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