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Appointment of Auditor in India: Section 139 Compliance

Reviewed by CA and CS Team, Patron Accounting LLP ICAI & ICSI Registered| 15+ Years Experience| Last Updated: 20 April 2026 Verify Credentials →

Governed by Section 139 and 141, Companies Act 2013: Every company incorporated in India must appoint a statutory auditor. Failure attracts penalties of INR 25,000 to INR 5,00,000 under Section 147.

First Auditor: Within 30 Days of Incorporation: Board of Directors appoints the first auditor within 30 days under Section 139(6). If Board fails, shareholders appoint at EGM within 90 days.

Subsequent Auditors: 5-Year Terms at AGM: Appointed at the first AGM for a 5-year term under Section 139(1). Mandatory rotation applies to listed and specified companies.

Form ADT-1 Filing: Within 15 Days: Form ADT-1 filed with ROC within 15 days of appointment. Now mandatory for first auditor appointments from July 14, 2025 per MCA Amendment Rules.

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Appointment of Auditor in India - Complete Guide 2026

📌 TL;DR - Appointment of Auditor Services at a Glance

Every company incorporated in India must appoint a statutory auditor within 30 days of registration under Section 139 of the Companies Act, 2013. Form ADT-1 must be filed with ROC within 15 days. Failure attracts penalties of INR 25,000 to INR 5,00,000 on the company plus personal liability for officers. Patron Accounting starting at INR 1,999 (Exl GST and Govt. Charges).

Appointing a statutory auditor is one of the very first compliance requirements for any company under the Companies Act, 2013. Without a valid auditor appointment, a company cannot complete its annual filing cycle, risking strike-off and personal penalties for directors.

Parameter	Key Fact
Governing Law	Section 139, 140, 141 - Companies Act, 2013
Applicable To	All companies - Private, Public, OPC, Government
First Auditor Deadline	Within 30 days of incorporation (Board) / 90 days (Members at EGM if Board fails)
Subsequent Appointment	At first AGM, for 5 consecutive years
Form to File	Form ADT-1 with ROC within 15 days of appointment
Penalty - Company	INR 25,000 to INR 5,00,000 under Section 147(1)
Penalty - Officers	Imprisonment up to 1 year + fine INR 10,000 to INR 1,00,000
Authority	MCA / ROC for filings; CAG for Government Companies

Auditor appointment ke liye kya documents chahiye? Board/AGM Resolution copy, auditor ki written consent letter, eligibility certificate under Section 141, DSC of authorised director, aur company details (CIN, PAN) chahiye Form ADT-1 filing ke liye. Patron Accounting poora process manage karta hai.

Content is reviewed quarterly for accuracy.

What is Appointment of Auditor?

Appointment of Auditor is the formal process by which a company designates a qualified Chartered Accountant (CA) or CA firm to independently examine and certify its financial statements, as mandated under Section 139 of the Companies Act, 2013.

Unlike the change of auditor process (which involves rotation, resignation, or removal), the appointment process covers the initial and subsequent designation of the statutory auditor. The MCA Amendment Rules 2025 have made ADT-1 filing mandatory even for first auditor appointments from July 14, 2025.

Key Terms for Appointment of Auditor:

Statutory Auditor: A CA or CA firm appointed under Section 139 to audit annual accounts of a company.

First Auditor: Appointed within 30 days of incorporation by the Board of Directors under Section 139(6).

Subsequent Auditor: Appointed at the company's first AGM for a 5-year term under Section 139(1).

Form ADT-1: Mandatory intimation filed with ROC within 15 days of auditor appointment. Now mandatory for first auditor from July 2025.

Casual Vacancy: Mid-term vacancy due to resignation, disqualification, death, or removal - Board fills within 30 days (Section 139(8)).

Audit Limit (Section 141(3)(g)): No individual CA or partner of a firm can audit more than 20 companies at any given time.

Section 139 Auditor Appointment

Who Needs to Appoint a Statutory Auditor?

Every company incorporated under the Companies Act, 2013 must appoint a statutory auditor without exception:

Private Limited Companies (Pvt Ltd)
Public Limited Companies
One Person Companies (OPC)
Nidhi Companies and Section 8 (Non-Profit) Companies
Government Companies - auditor appointed by Comptroller and Auditor General (C&AG)

Auditor Rotation (Section 139(2)): Mandatory for listed companies and specified classes. Individual CA: max 1 term (5 years). CA firm/LLP: max 2 terms (10 years). Cooling-off: 5 years. OPCs and small companies are exempt.

Audit Limit: No individual CA or partner can audit more than 20 companies at any given time under Section 141(3)(g).

Patron Accounting Deliverables for Auditor Appointment

Service	What We Do
Eligibility Assessment	Verify auditor's Section 141 qualifications and disqualification checks including 20-company audit limit
Consent Letter and Eligibility Certificate	Drafting auditor consent letter and obtaining eligibility certificate under Section 141
Board/AGM Resolution Drafting	Board resolution for first auditor or AGM resolution for subsequent appointment
Form ADT-1 Filing	Filing Form ADT-1 with ROC on MCA V3 portal within 15 days of appointment
Form MGT-14 Filing (if required)	Filing for listed and specified companies within 30 days of Board resolution
Post-Appointment Compliance Advisory	Rotation tracking, next AGM cycle planning, and ongoing compliance support

Our Process

Step-by-Step Procedure for Appointment of Auditor

Follow these 7 steps to ensure legally compliant appointment under Section 139 of the Companies Act, 2013.

Step 1

Identify Eligible Auditor

Select a CA or CA firm holding a valid Certificate of Practice from ICAI. Verify they are not disqualified under Section 141(3) - no shareholding in company, no indebtedness exceeding INR 1 lakh, no business relationship, and not serving more than 20 audits.

Eligible auditor identified Section 141 verified

Eligible01

Step 2

Obtain Auditor Consent

Get a written consent letter from the proposed auditor confirming willingness to accept appointment under Section 139 of the Companies Act, 2013.

Written consent obtained Rule 4(1) compliant

Consented02

Step 3

Obtain Eligibility Certificate

The auditor must provide a certificate confirming compliance with all conditions of Section 141 and that the appointment will not violate audit limits.

Certificate received Audit limit verified

Certified03

Step 4

Pass Board or AGM Resolution

For first auditor (within 30 days of incorporation): Board Resolution under Section 139(6). For subsequent auditors: Ordinary Resolution at AGM. Where Audit Committee exists, its recommendation must be considered.

Resolution passed Within 30-day deadline

Resolved04

Step 5

Intimate the Auditor

Send written intimation of appointment to the auditor within the period specified in Section 139(1).

Auditor intimated Written record created

Intimated05

Step 6

File Form ADT-1 with ROC

File Form ADT-1 on the MCA V3 portal within 15 days of the AGM or Board Meeting date. Attach: Board/AGM resolution, auditor consent letter, eligibility certificate, and intimation. ADT-1 mandatory for first auditor from July 2025.

ADT-1 filed within 15 days MCA records updated

ADT-1 Filed06

Step 7

File Form MGT-14 (if required)

Listed companies and specified companies must also file MGT-14 for the Board Resolution within 30 days [Section 117 of Companies Act, 2013].

MGT-14 filed (if applicable) All filings complete

Complete07

MCA 2025 Update: Form ADT-1 filing for first auditor is now mandatory for all companies incorporated on or after July 14, 2025 per Companies (Audit and Auditors) Amendment Rules 2025.

Documents Checklist for Auditor Appointment

Certificate of Incorporation of the Company
PAN of the Company
Written consent letter from the proposed Auditor (Rule 4(1), Companies (Audit and Auditors) Rules 2014)
Eligibility Certificate from the Auditor under Section 141
Board Resolution copy (for first auditor / casual vacancy) OR AGM Resolution copy (for subsequent appointment)
DSC of authorised Director for MCA filing
Form ADT-1 (prepared with correct financial year and auditor details)
Form MGT-14 (if applicable - listed or specified companies)
Copy of intimation sent to the Auditor by the Company

Common Challenges in Auditor Appointment and How We Solve Them

Challenge	Impact	How Patron Accounting Solves It
Board Fails to Appoint Within 30 Days	Immediate compliance default from Day 31	We initiate the appointment process at the pre-incorporation stage. Board resolution and ADT-1 filed well within the 30-day deadline.
Auditor Disqualification Discovered After Appointment	Deemed casual vacancy, entire process restarts	We monitor eligibility continuously and manage replacement within 30-day deadline under Section 139(8).
ADT-1 Filing Errors on MCA V3 Portal	SRN validation failures, delayed filing	Our CS team has deep MCA V3 experience - ensures error-free, first-time-right submission every time.
Mandatory Rotation Compliance for Listed Companies	Missed rotation deadline creates compliance gap	We maintain rotation tracker for all clients and initiate replacement 90 days before rotation deadline.

Professional Fees for Auditor Appointment

Fee Component	Amount
Patron Accounting Professional Fees - First Auditor Appointment (Pvt Ltd / OPC)	Starting from INR 1,999 (Exl GST and Govt. Charges)
Subsequent Auditor Appointment at AGM + ADT-1 Filing	Starting at INR 3,999
Auditor Rotation Compliance (Listed / Specified Companies)	Starting at INR 7,999
Casual Vacancy Appointment + Emergency ADT-1 Filing	Starting at INR 4,999
Government / ROC Filing Fees for ADT-1	At actuals - MCA fee based on authorised capital

All fees and charges listed are indicative only and do not constitute a binding offer. Final amounts may vary depending on the volume of work and the complexity involved.

Professional service charges for drafting, filing, and representation are separate from the statutory fees. The exact fee depends on the complexity of the case, disputed amount, and number of hearings required. Contact us for a detailed quote.

Get a free Appointment of Auditor consultation - Call +91 945 945 6700 or WhatsApp us. No-obligation assessment.

Timeline for Appointment of Auditor

Stage	Estimated Timeline
Board Resolution for first auditor	Within 30 days of incorporation (Section 139(6))
Shareholder appointment at EGM if Board fails	Within 90 days of incorporation
Subsequent auditor appointment at AGM	At the first Annual General Meeting
Filing Form ADT-1 with ROC	Within 15 days of AGM / Board meeting
Filing Form MGT-14 (if applicable)	Within 30 days of Board Meeting (Section 117)
Casual vacancy filling - Board appointment	Within 30 days of vacancy arising

Patron Turnaround: 3-5 working days from document receipt. We initiate at pre-incorporation stage itself to ensure Day 1 compliance. ADT-1 filed within 15 days - zero late filing fees.

Key Benefits

Why Professional Assistance for Auditor Appointment

Zero-Error ADT-1 Filing

MCA V3 portal cross-validates SRN numbers and rejects mismatched entries. Our team ensures error-free, first-time-right submission avoiding INR 200/day late fee.

Comprehensive Eligibility Check

Prevents disqualification risk under Section 141(3) - shareholding, indebtedness, business relationship, and 20-company audit limit all verified.

Proper Documentation

Consent letter, eligibility certificate, and Board/AGM resolution templates - all prepared professionally for ROC compliance.

Rotation Compliance Tracking

For listed and specified companies - proactive rotation tracker ensures seamless transition without compliance gap at 5/10-year term ends.

Integrated Compliance Calendar

Auditor appointment is not isolated - it integrates with annual filing cycle, AGM management, and ROC compliance. No gaps between compliance tracks.

Pan-India Coverage

Offices in Mumbai, Delhi, Pune, Bangalore. 200+ auditor appointments handled annually. 100% on-time ADT-1 filing record.

200+ Auditor Appointments Annually - Zero-Penalty Track Record

"Patron handled our first auditor appointment and ADT-1 filing within 2 days of incorporation. Zero errors, zero stress." - Director, Pune-based Technology Startup

DIY vs Professional Auditor Appointment

Parameter	DIY Filing	Patron Accounting
Eligibility Check (Sec 141)	Manual - prone to oversight	Systematic checklist by CS team
ADT-1 MCA V3 Filing	Complex portal - high error rate	Error-free, first-time-right filing
Rotation Compliance	Easy to miss deadline	Proactive tracking and alerts
Penalty Risk	High - INR 200/day ADT-1 + company fine	Near-zero - deadline monitoring built in
Documentation Quality	Generic templates, potential errors	Professional consent letter, certificate, resolution
Post-Appointment Support	None - isolated compliance	Integrated with annual compliance calendar

Related Compliance Services

Compliance for Private Limited Companies - annual ROC filings and board compliance
Change of Auditor in India - rotation, resignation, and removal procedures
Appointment of Director in India - director appointment and DIN application
ROC Notice Response - handling ROC notices and compliance
Statutory Audit Services - annual financial statement audit by CA
Secretarial Audit Service - Section 204 compliance audit

Legal Framework for Appointment of Auditor in India

Legal Provision	Details
Section 139 - Appointment of Auditors	First auditor within 30 days (S.139(6)); subsequent at AGM for 5 years (S.139(1)); rotation for listed/specified companies (S.139(2)); casual vacancy (S.139(8)). Source: ca2013.com
Section 141 - Eligibility	Only CA in practice eligible. Disqualifications: shareholding, indebtedness above INR 1 lakh, business relationship, 20-company limit. Source: ca2013.com
Section 142 - Remuneration	Fixed by company at AGM or Board. Must be separately disclosed in financial statements.
Section 147 - Penalties	Company: fine INR 25,000 to INR 5,00,000. Officer: imprisonment up to 1 year + fine INR 10,000 to INR 1,00,000.
Companies (Audit & Auditors) Rules 2014	Rule 4: ADT-1 procedure. Rule 5: Appointment conditions. Rule 6: Rotation mechanism.
MCA Amendment Rules 2025	ADT-1 filing mandatory for first auditor appointments from July 14, 2025. New compliance declarations on ADT-1.

Frequently Asked Questions - Appointment of Auditor

Get answers to common questions about statutory auditor appointment, Form ADT-1, eligibility, rotation rules, and penalties.

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Who appoints the first auditor of a private limited company?

The Board of Directors appoints the first auditor within 30 days of incorporation under Section 139(6) of the Companies Act, 2013. If the Board fails to appoint within 30 days, the shareholders must appoint the auditor at an Extraordinary General Meeting within 90 days of incorporation.

What is Form ADT-1 and when must it be filed?

Form ADT-1 is the mandatory intimation filed with the Registrar of Companies (ROC) to officially notify the appointment of a statutory auditor under Section 139(1). It must be filed within 15 days of the AGM or Board Meeting at which the auditor was appointed. Per MCA Amendment Rules 2025, it is now mandatory for first auditor appointments as well.

What is the penalty for not appointing an auditor?

Under Section 147 of the Companies Act, 2013, failure to appoint an auditor attracts a company fine of INR 25,000 to INR 5,00,000. Every officer in default faces imprisonment of up to 1 year plus a fine of INR 10,000 to INR 1,00,000. Late ADT-1 filing attracts an additional fee of INR 200 per day.

What is auditor rotation and does it apply to small companies?

Auditor rotation under Section 139(2) is mandatory for listed companies and specified classes of public companies. Individual auditors must rotate after 5 consecutive years; audit firms after 10 years (two terms of 5 years). Private limited companies and OPCs are currently exempt from mandatory rotation.

Can a company remove its auditor before the term expires?

Yes, under Section 140(1) of the Companies Act, 2013, an auditor can be removed before expiry of term only by a special resolution of the shareholders and with prior approval of the Central Government by filing Form ADT-2. The auditor must be given a reasonable opportunity to be heard.

Is Form ADT-1 required for the first auditor appointment?

Yes, as per the Companies (Audit and Auditors) Amendment Rules 2025, Form ADT-1 is now mandatory for first auditor appointments for all companies incorporated on or after July 14, 2025. Previously this was considered optional for first appointment under Section 139(6), but MCA has now clarified that filing is required.

Auditor appointment ke liye kya documents chahiye?

Board/AGM Resolution copy, auditor ki written consent letter, eligibility certificate under Section 141 confirming no disqualification, DSC of authorised director, aur company details (CIN, PAN, registered office address) chahiye Form ADT-1 filing ke liye ROC ke saath.

What is casual vacancy and how is it filled?

A casual vacancy arises when an auditor vacates office mid-term due to resignation, disqualification, death, or removal. Under Section 139(8) of the Companies Act, 2013, the Board of Directors must fill the vacancy within 30 days. If the vacancy arose due to resignation, shareholder approval at a general meeting within 3 months of Board appointment is also required.

Quick Answers

Time limit for first auditor: 30 days from incorporation (Board) / 90 days (Members at EGM) - Section 139(6).

ADT-1 filing deadline: Within 15 days of AGM or Board Meeting - Section 139(1).

Audit limit per auditor: Maximum 20 companies per individual CA or per partner - Section 141(3)(g).

Rotation cooling-off: 5 years from completion of term before same auditor/firm can be reappointed - Rule 6.

30-Day Deadline Starts from Incorporation - Act Now

Newly incorporated companies have a 30-day window from incorporation date to appoint their first auditor. Missing this creates an immediate compliance default.

Penalty clock starts Day 31: INR 25,000 minimum fine for company + personal liability for every director
ADT-1 late filing: INR 200 per day additional fee on top of ROC base fee
Annual filing cycle blocked: Without a valid auditor, the company cannot complete its annual filing cycle
Strike-off risk: Persistent non-compliance puts the company at risk of ROC-initiated strike-off

Appoint Your Auditor Today - Starting at INR 1,999

Appointment of auditor is a non-negotiable day-one compliance for every company in India. Section 139 sets strict deadlines for first appointment, subsequent appointment at AGM, and filling casual vacancies.

The 2025 MCA amendments have strengthened requirements further by mandating ADT-1 filing even for first auditor appointments. Patron Accounting's CS team handles the complete end-to-end process.

Starting at INR 1,999 (Exl GST and Govt. Charges) | 200+ Appointments/Year | Zero-Penalty Record | 3-5 Working Days

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Content Created: March 2026 | Last Updated: 20 April 2026 | Next Review: March 2027 | Reviewed By: CA & CS Team, Patron Accounting LLP

This page covers Appointment of Auditor in India under Section 139, Companies Act 2013. MCA Amendment Rules 2025 (ADT-1 mandatory for first auditor) reflected. Content reviewed annually.