Skip to content

Corporate Accounting and Auditing · Statutory Audit under the Companies Act, 2013

Joint Auditors, Branch Audit and Cost Audit

Updated 10 October 2026 · Fact-checked

Joint auditors are two or more auditors appointed together to audit one company. Branch audit is covered by section 143(8): the company's auditor or another qualified person audits the branch, and a separate branch auditor sends a report to the company's auditor, who deals with it as he considers necessary. Cost audit is under section 148.

Understand Joint Auditors, Branch Audit and Cost Audit

A company may have more than one auditor, or more than one office. The law has to say who audits what, and who is answerable for the final report. This topic covers three arrangements: joint auditors, branch auditors and the cost auditor.

Joint auditors are two or more firms or persons appointed together as the auditors of one company. Large companies use this when the work is big or spread over many places. They share the work and sign one report, or separate reports if their opinions differ. Each auditor stays responsible for the areas he has covered. All joint auditors are jointly and severally responsible for matters that are common to them, for the audit as a whole, and for the report being in the proper form. Divide the work in writing and keep it documented.

Branch audit is dealt with in section 143(8). Where a company has a branch office, the branch accounts are audited either by the company's auditor or by another person qualified for appointment as the company's auditor and appointed under section 139. For a branch outside India, the audit can be by the company's auditor, or by an accountant or other person duly qualified to act as auditor of the branch accounts under the laws of that country. The duties and powers of the company's auditor for the branch audit, and of the branch auditor, are as prescribed.

The proviso is the key exam point. The branch auditor prepares a report on the branch accounts he examined and sends it to the company's auditor. The company's auditor then deals with it in his report in the manner he considers necessary. So the branch auditor reports to the company's auditor, and the company's auditor reports to the members. Section 143(3)(c) also requires the main report to state whether the branch auditor's report was sent to him and how he dealt with it.

Cost audit is different in nature. It is an audit of cost records, not of the financial statements, and it is carried out by a cost accountant under section 148. Section 143(14) applies the provisions of section 143 mutatis mutandis to the cost accountant conducting cost audit. So the cost auditor gets similar rights of access, duties of reporting and the fraud-reporting duty under section 143(12). Which companies must have a cost audit depends on the rules made under section 148. The section 143 text supplied does not list those thresholds, so learn them from your ICMAI study material and the Cost Records and Audit Rules.

Key rules to remember

Branch audit - who can audit (section 143(8))
Branch auditor = company's auditor OR other person qualified and appointed under section 139
For a branch outside India, the company's auditor or an accountant or other person duly qualified under that country's laws.
Branch auditor's report (proviso to section 143(8))
Branch auditor → report → company's auditor → deals with it as he considers necessary
The branch auditor does not report to members on the branch. The company's auditor does, in the main report.
Main report must mention branch report (section 143(3)(c))
State whether the branch auditor's report was sent and how it was dealt with
Applies where a branch is audited by a person other than the company's auditor.
Returns from branches not visited (section 143(3)(b))
State whether proper returns adequate for audit were received from branches not visited
Part of the report on proper books of account.
Cost audit and section 143 (section 143(14)(a))
Section 143 applies mutatis mutandis to the cost accountant conducting cost audit under section 148
Applicability thresholds come from the rules under section 148, not from section 143.
Fraud reporting duty (section 143(12) and (15))
Penalty for non-compliance: ₹5,00,000 (listed company); ₹1,00,000 (any other company)
Applies to an auditor, cost accountant or company secretary in practice.

How to solve Joint Auditors, Branch Audit and Cost Audit questions

Use this method for any question on joint auditors, branch audit or cost audit.

  1. 1Identify which arrangement the question is about: joint auditors, branch audit, or cost audit.
  2. 2For a branch, note whether it is in India or outside India. This decides who may audit it.
  3. 3Name the person who audits the branch: the company's auditor, or another qualified person appointed under section 139 (or a person qualified under foreign law for a foreign branch).
  4. 4State the reporting chain: the branch auditor sends his report to the company's auditor, who deals with it as he considers necessary in his own report.
  5. 5For joint auditors, state how the work is divided, which matters are common, and that each is responsible for his own area and jointly for common matters.
  6. 6For cost audit, state that it covers cost records, is done by a cost accountant under section 148, and that section 143 applies mutatis mutandis under section 143(14).
  7. 7Where the question asks about applicability, say it depends on the rules under section 148 and apply the thresholds given in the question or your study material.
  8. 8Close with the practical effect on the audit report, such as the section 143(3)(c) statement.

Quickest way: Who audits, who reports to whom

When to use it: Use this for short MCQs and 2 to 4 mark theory questions where you need the rule fast.

  1. Ask: is it a branch, a joint appointment, or cost records?
  2. Branch: company's auditor or another qualified person. Report goes to the company's auditor.
  3. Joint: shared work, one report if they agree, common matters are joint responsibility.
  4. Cost: cost accountant, section 148, section 143 applies mutatis mutandis.
  5. Check the option wording for 'members' versus 'company's auditor'. The branch auditor reports to the company's auditor.

Common mistakes in Joint Auditors, Branch Audit and Cost Audit

  • Saying the branch auditor reports directly to the members.

    Students assume every auditor signs a report to shareholders.

    Fix: Remember the proviso to section 143(8): the branch auditor sends his report to the company's auditor, who deals with it in his own report.

  • Saying the company's auditor must accept the branch auditor's report as it is.

    Students overlook the discretion in the proviso.

    Fix: Write that the company's auditor deals with it in such manner as he considers necessary.

  • Treating joint auditors as each responsible only for their own part.

    Work is divided, so students assume liability is divided too.

    Fix: State that each is responsible for his own work, but all are jointly responsible for common matters and for the audit report being in proper form.

  • Confusing joint audit with branch audit.

    Both involve more than one auditor.

    Fix: In joint audit, several auditors are appointed for the whole company. In branch audit, one person audits a particular branch and reports to the company's auditor.

  • Treating cost audit as an audit of the financial statements.

    The word 'audit' suggests the same scope.

    Fix: Say cost audit examines cost records, is done by a cost accountant under section 148, and has its own report.

  • Quoting cost audit turnover limits from memory without being sure.

    Thresholds are in rules, not in the Act sections.

    Fix: Use the figures given in the question or in your ICMAI material, and state that applicability comes from rules under section 148.

Worked examples

Example 1

Explain the provisions of section 143(8) regarding audit of a branch office. (6 marks)

Show the solution
  1. State who can audit: where a company has a branch office, its accounts are audited by the company's auditor or by any other person qualified for appointment as auditor of the company and appointed under section 139.
  2. Foreign branch: where the branch is outside India, the audit can be by the company's auditor or by an accountant or other person duly qualified to act as auditor of the branch accounts under that country's laws.
  3. Duties and powers: the duties and powers of the company's auditor for the branch audit, and of the branch auditor, are as prescribed.
  4. Reporting: the branch auditor prepares a report on the branch accounts he examined and sends it to the company's auditor.
  5. Use by the company's auditor: he deals with that report in his own report in such manner as he considers necessary.
  6. Link to section 143(3)(c): the main report must state whether the branch auditor's report was sent to him and how he dealt with it.

Answer: The branch is audited by the company's auditor or another qualified person appointed under section 139 (or a person qualified under foreign law for a foreign branch). The branch auditor reports to the company's auditor, who deals with it as he considers necessary and mentions it in his report.

Example 2

Bharat Textiles Ltd has a branch at Surat audited by CA Mehta, who is not the company's auditor. The company's auditor is Rao & Co. CA Mehta wants to give his audit report directly to the shareholders at the annual general meeting. Is this correct? What must Rao & Co do?

Show the solution
  1. The branch audit by CA Mehta is allowed if he is qualified for appointment as auditor of the company and appointed under section 139.
  2. The proviso to section 143(8) requires the branch auditor to prepare a report on the branch accounts he examined and send it to the auditor of the company.
  3. So CA Mehta should send his report to Rao & Co, not directly to the shareholders.
  4. Rao & Co must deal with the report in its own report in the manner it considers necessary.
  5. Under section 143(3)(c), Rao & Co's report must state whether the branch auditor's report was sent to it and how it was dealt with.

Answer: No, it is not correct. CA Mehta must send his report to Rao & Co. Rao & Co deals with it in its own report to the members and states the manner in which it did so, as required by section 143(3)(c).

Exam tips

  • For branch audit questions, quote the reporting chain in one clear sentence. It is the most tested point.
  • In MCQs, watch for options saying the branch auditor reports to members or to the Board. The proviso says the company's auditor.
  • Where the question asks for a 'difference between joint audit and branch audit', use a two-column layout: appointment, scope, reporting, responsibility.
  • For cost audit, always mention section 148 and that section 143 applies mutatis mutandis through section 143(14). Do not invent threshold figures.
  • If a fraud is mentioned, add section 143(12): report to the Central Government, or to the audit committee or Board where the amount is below the specified limit.

Practice questions from Statutory Audit under the Companies Act, 2013

Joint Auditors, Branch Audit and Cost Audit in other exams

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

Joint Auditors, Branch Audit and Cost Audit: frequently asked questions

Who audits the branch of a company under section 143(8)?

The company's auditor, or any other person qualified for appointment as the company's auditor and appointed under section 139. For a branch outside India, a person duly qualified under the laws of that country can also audit it.

Does the company's auditor have to follow the branch auditor's report?

The branch auditor sends his report to the company's auditor. The company's auditor deals with it in his report in such manner as he considers necessary. He must also state in his report how he dealt with it.

What is the difference between joint audit and branch audit?

In joint audit, two or more auditors are appointed for the whole company and share the work. In branch audit, one person audits a particular branch and sends his report to the company's auditor, who remains responsible for the main report to the members.

Does section 143 apply to the cost auditor?

Yes. Section 143(14)(a) says the provisions of the section apply mutatis mutandis to the cost accountant conducting cost audit under section 148. This includes the duty to report fraud under section 143(12).