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Audit Knowledge Guide

Understanding Audit in India
Standards, Types & Obligations

6+
Types of Audit
SA 700
Core Audit Standard
30 Sep
Tax Audit Deadline
CARO
2020 Reporting Order
Audit Types

Types of Audit in India

Every audit type serves a distinct purpose, understanding which applies to your business is the first step to compliance.

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Statutory Audit

Mandatory under Companies Act 2013 for all registered companies. An independent CA examines financial statements and expresses an opinion on whether they present a true and fair view. Governed by Standards on Auditing issued by ICAI.

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Tax Audit (Section 44AB)

Mandatory for businesses with turnover exceeding ₹1 crore (₹10 crore if 95%+ digital) and professionals with gross receipts above ₹50 lakh. CA certifies Form 3CA/3CB and the detailed Form 3CD. Due by 30th September.

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Internal Audit

Mandatory under Section 138 for listed companies, unlisted public companies above specified thresholds, and private companies with turnover above ₹200 crore or outstanding loans above ₹100 crore. Risk-based; focuses on operational controls and governance.

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Compliance Audit

A multi-law review covering Companies Act, GST, Income Tax, Labour Laws, FEMA, and RERA obligations. Identifies compliance gaps before regulators do. Often paired with secretarial audit (Form MR-3) for listed and specified unlisted companies.

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Stock Audit

Physical verification of inventories for banks, NBFCs, or management purposes. Certifies stock quantities, valuation, and quality. Mandatory for entities with working capital credit limits above bank-prescribed thresholds. Conducted periodically by empanelled CAs.

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Bank / Concurrent Audit

Audit of banking operations, financial statements, and regulatory compliance. Concurrent audit runs alongside daily bank operations to ensure real-time transaction accuracy, limit compliance, and KYC adherence as per RBI guidelines.

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Government / PSU Audit

Audit of government entities, public sector undertakings, NGOs receiving grants, and cooperative societies. Follows CAG-prescribed standards. Focuses on fund utilisation, tendering compliance, and efficiency of government expenditure.

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Cost Audit

Mandatory for companies in specified industries (cement, pharma, telecom, etc.) with turnover above prescribed limits. CA (Cost) or CMA certifies cost records in Form CRA-3. Ensures cost accounting records are maintained correctly.

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Information Systems Audit

Review of IT systems, cybersecurity controls, data integrity, and access management. Increasingly relevant as financial reporting becomes system-dependent. Important for banks, NBFCs, large corporates, and digital businesses.

Audit Process

The Standard Audit Engagement Process

A six-stage structured process followed in every well-conducted audit engagement.

APPOINTMENT & SCOPE RISK ASSESSMENT FIELDWORK REVIEW & DISCUSSION REPORTING POST-AUDIT ADVISORY 01 02 03 04 05 06 Appointment & Scope Engagement letter, confirm applicable laws, materiality and audit timelines. Risk Assessment Understand entity, assess inherent and control risks, design audit procedures. Fieldwork Execution Test controls, verify balances, vouch transactions, obtain third-party confirmations. Review & Discussion Discuss observations with management, obtain responses and resolve open matters. Audit Reporting Issue audit report, CARO report, management letter with recommendations. Post-Audit Advisory Implement recommendations, address regulatory queries, and strengthen controls. STANDARD AUDIT ENGAGEMENT PROCESS
CARO 2020

Companies Auditor’s Report Order 2020

CARO 2020 replaced CARO 2016 and significantly expanded auditor reporting obligations. It applies to all companies except certain small private companies, banking companies, insurance companies, and Section 8 companies below threshold.

CARO requires auditors to report on 21 specific clauses covering fixed assets, inventories, loans, investments, statutory dues, borrowings, related-party transactions, fraud, and CSR, among others.

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Fixed Assets (Clause 1)
Whether the company maintains proper records of fixed assets, conducts physical verification periodically, and reports any material discrepancies found.
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Loans to Related Parties (Clause 4)
Compliance with Section 185 and 186. Auditor must report on terms and recoverability. Loans not at arm’s length must be specifically flagged.
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Statutory Dues (Clause 7)
Report whether GST, PF, ESIC, TDS, customs, and income tax dues are regularly deposited. Amounts outstanding over 6 months must be specifically disclosed.
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Fraud Reporting (Clause 11)
Mandatory reporting of fraud by or on the company. Fraud above ₹1 crore must be reported to the Central Government. Cash losses in current and prior year must be disclosed.

“CARO 2020 transformed the auditor’s role from a financial statement verifier to a governance watchdog, requiring detailed reporting on fraud, related-party transactions, whistle-blowers, and CSR compliance.”

V J Desai & Co. LLP, Audit Advisory
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Whistle-Blower Complaints (Clause 18)
Auditors must consider complaints received under the vigil mechanism (Section 177) and report on how management has handled them during the year.
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CSR Compliance (Clause 19)
Whether the company has complied with Section 135 CSR provisions, including whether unspent CSR amounts have been transferred to prescribed funds within deadlines.
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Undisclosed Transactions (Clause 1(vii))
Auditors must report on transactions not recorded in the books and whether they have been properly accounted for in the financial statements.
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Internal Financial Controls (Clause 1(vi))
Whether the company has adequate IFC with reference to financial statements, and whether such controls operated effectively during the year.
Applicability & Due Dates

Audit Thresholds & Deadlines FY 2025-26

Quick reference for audit applicability and filing deadlines, ensure your entity meets all obligations on time.

Audit TypeApplicability ThresholdDue DateReport / FormAuthority
Statutory AuditAll registered companies (no threshold)Before AGM; within 6 months of FY endAuditor’s ReportMCA / ROC
Tax Audit, BusinessTurnover > ₹1 crore (₹10 crore if 95% digital)30th SeptemberForm 3CA + 3CDIncome Tax Dept.
Tax Audit, ProfessionGross receipts > ₹50 lakh30th SeptemberForm 3CB + 3CDIncome Tax Dept.
Internal AuditListed cos.; unlisted public cos. turnover > ₹200 cr; private cos. turnover > ₹200 cr or loans > ₹100 crBoard-defined (quarterly recommended)Internal Audit ReportBoard / Audit Committee
Secretarial AuditListed + unlisted public cos. with paid-up capital ≥ ₹50 crore or turnover ≥ ₹250 croreWith Board Report (AGM)Form MR-3MCA / ROC
Cost AuditSpecified regulated industries; turnover > ₹35 crore (products)30th SeptemberForm CRA-3MCA / Cost Audit Branch
GST Audit (GSTR-9C)Aggregate turnover > ₹5 crore31st DecemberGSTR-9CGST Department
Bank AuditAll scheduled commercial and cooperative banksWithin 3 months of FY endLFAR + Main ReportRBI / Registrar Co-op
Standards on Auditing

Key ICAI Standards on Auditing

Standards on Auditing (SAs) issued by ICAI govern how audits must be planned, executed, and reported in India.

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SA 200, Overall Objectives

Defines the auditor’s overall objectives: obtaining reasonable assurance that financial statements are free from material misstatement. Establishes the foundation of professional scepticism and audit judgment.

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SA 315, Risk Assessment

Requires the auditor to understand the entity, its environment, and internal controls to identify and assess risks of material misstatement at both the financial statement and assertion levels.

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SA 240, Fraud Responsibilities

Addresses the auditor’s responsibilities relating to fraud. Requires professional scepticism, specific fraud risk inquiries, and defined procedures when fraud risk factors are identified.

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SA 570, Going Concern

Requires the auditor to evaluate management’s going concern assessment. If material uncertainty exists, the auditor must report it, even if the financials are otherwise fairly presented.

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SA 540, Accounting Estimates

Governs auditing of accounting estimates and fair value disclosures. Requires evaluation of management’s estimation process, inputs used, and reasonableness of assumptions applied.

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SA 700, Forming an Opinion

Governs the form and content of the auditor’s report on complete general-purpose financial statements. Specifies the required elements of an unmodified (clean) audit opinion.

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SA 705, Modified Opinions

Covers circumstances where the auditor issues a qualified opinion, adverse opinion, or disclaimer of opinion, including specific language and placement of modifications in the audit report.

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SA 600, Using Work of Others

Governs group audit engagements involving component auditors. The group auditor retains full responsibility for the group audit opinion and must oversee component auditor work appropriately.

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SA 505, External Confirmations

Governs the use of external confirmation procedures, including bank confirmations, debtor confirmations, and legal representations. Covers design, execution, and evaluation of responses.

Audit Services

Need professional audit support?

V J Desai & Co. LLP conducts statutory, tax, internal, compliance, bank, and stock audits across all sectors. Our CA-led team brings structured methodology, rigorous documentation, and practical management insights to every engagement.

We provide:

  • Statutory audit under Companies Act, LLP Act, and Trust Act
  • Tax audit certification (Form 3CA/3CB/3CD)
  • Internal audit, risk-based, process-driven
  • Compliance audit across GST, labour, FEMA, RERA
  • Stock audit for banks and management
  • CARO 2020 reporting and IFC assessment

Book an Audit Consultation

Tell us about your entity and audit requirements. Our team will assess your obligations and propose the right engagement model.

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