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Statutory Audit of Companies: Appointment, Rotation, Reporting Under Companies Act 2013

Every company must appoint a statutory auditor under Section 139 of the Companies Act 2013. Learn about auditor appointment, mandatory rotation, Section 143 duties, CARO requiremen...

TaxClue Team Tax & Compliance Expert
2 min read 1 views Updated Jun 16, 2026
Expert Reviewed High Complexity
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Statutory audit is a mandatory independent examination of a company's financial records under Section 138-148 of the Companies Act 2013. Unlike tax audit (income tax) or GST audit, a statutory audit is required for all companies registered under the Companies Act.

Appointment of Auditor (Section 139)

First Auditor

  • Appointed by Board of Directors within 30 days of incorporation
  • If Board fails: Members appoint at an EGM within 90 days
  • Holds office until conclusion of first AGM

Subsequent Auditors

  • Appointed at each AGM by shareholders (ordinary resolution)
  • Individual auditor: one term of 5 consecutive years
  • Audit firm: one or two terms of 5 consecutive years each (maximum 10 years)
  • After completing maximum term: cooling-off period of 5 years before re-appointment

Companies Required to Follow Mandatory Rotation

  • All listed companies
  • Unlisted public companies with paid-up capital ≥ Rs.10 crore
  • Private companies with paid-up capital ≥ Rs.50 crore
  • All companies with public borrowings ≥ Rs.50 crore from banks/FIs

Filling Vacancy — Casual Vacancy

  • Caused by resignation: Board can fill within 30 days; subject to shareholder ratification in next 3 months
  • Caused by death/removal: EGM of shareholders to fill

Auditor Duties (Section 143)

Access Rights

Auditor has right to access all books of account, vouchers, documents (including in electronic form) at all times. Can require any director/officer/employee to provide information.

Mandatory Reporting Items

  • Whether financial statements give true and fair view as per accounting standards
  • Whether proper books of accounts maintained
  • Whether balance sheet and P&L agree with books
  • Adequacy of internal financial controls (IFC) over financial reporting
  • Any material uncertainty about going concern
  • Fraud reporting: If fraud > Rs.1 crore — report immediately to Central Government (within 60 days); below Rs.1 crore — report to audit committee/Board

CARO 2020 — Key Reporting Requirements

Companies Auditor's Report Order (CARO) 2020 requires the auditor to comment on:

AreaWhat Auditor Reports
Fixed AssetsMaintenance of records, physical verification, title deeds
InventoryPhysical verification frequency; discrepancies > 10%
Loans and AdvancesLoans to directors/companies; prejudicial to company interest
DepositsCompliance with Section 73-76 deposit rules
Internal AuditWhether internal audit conducted as required by Section 138
FraudAny fraud noticed by auditor or reported to them
Statutory DuesRegularity in payment of TDS, PF, ESI, GST, customs, income tax
Loans from Banks/FIsDefault in repayment; end-use of term loans
Share Capital/Public IssueUtilization of funds raised through IPO/FPO/preferential allotment

Prohibited Services (Section 144)

To ensure auditor independence, a statutory auditor (and its network firms) cannot provide to the same audit client:

  • Bookkeeping/accounting/payroll
  • Internal audit
  • Design/implementation of financial information systems
  • Actuarial services
  • Investment banking/investment advisory
  • Rendering outsourced financial services
  • Management/consulting services (other than audit-related)

ROC Filings

  • ADT-1: Intimation of auditor appointment — filed by company within 15 days of AGM
  • ADT-3: Resignation statement by auditor — filed within 30 days of resignation

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Frequently Asked Questions
When is a statutory auditor appointed?
At each Annual General Meeting (AGM) for a term of 1 year (individual) or up to 5 years (firm). First auditor appointed by Board within 30 days of incorporation; if Board fails, members appoint within 90 days.
What is the mandatory rotation rule for auditors?
Listed companies and class of companies (paid-up capital Rs.10 crore or turnover Rs.50 crore): Individual auditor max 5 consecutive years; audit firm max 10 consecutive years. A cooling-off period of 5 years applies before re-appointment.
What is CARO (Companies Auditor Report Order)?
CARO 2020 requires auditors to report on specific matters (loans, fixed assets, inventory, fraud, internal financial controls, etc.) in addition to the main audit report. Applicable to all companies except private companies with paid-up capital < Rs.1 crore and borrowings < Rs.1 crore.
What services are prohibited for statutory auditors?
Section 144: Auditor cannot provide accounting/bookkeeping, internal audit, design and implementation of financial information systems, actuarial services, investment advisory, investment banking, rendering of outsourced financial services, and management services to the same audit client.
What is the auditor qualification for listed companies?
Must be a Chartered Accountant (member of ICAI). Firms must be registered with ICAI. For listed company audit, CA firm must have at least 5 audit partners and at least 3 of them must be ICAI members with 10+ years of experience (UDIN mandatory since 2018).
What happens when an auditor resigns?
Auditor must file Form ADT-3 (statement of reasons) with the ROC within 30 days of resignation. Failure to do so: penalty up to Rs.50 lakh or equal to fees paid (whichever is less).

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