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How to Fill a Casual Vacancy of Auditor — Process

How to fill a casual vacancy in the office of auditor under Section 139(8) — Board vs member appointment, resignation-driven vacancy, timelines and ADT-1.

Published
Updated
Reading time
4 min
Questions
6 answered
  • High Complexity
Topic
MCA Compliance
Published
August 25, 2026
Last updated
Aug 25, 2026
Reading time
4 min
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Last updated: August 2026Verified against: Government sources

Overview

A "casual vacancy" is an unexpected gap in the office of auditor arising mid-term — most often through resignation, but also death or disqualification. The Companies Act sets out who fills it and how fast, with an extra safeguard of member approval where the vacancy is caused by resignation.

When It Is Required & Legal Basis

Section 139(8) of the Companies Act, 2013 governs casual vacancies. It provides that the Board fills the vacancy within 30 days; where the vacancy is by resignation, the appointment is also approved by the company at a general meeting convened within three months of the Board's recommendation. The auditor so appointed holds office until the conclusion of the next AGM.

Step-by-Step Process

  1. Record the vacancy. Note the cause — resignation (ADT-3 by outgoing auditor), death or disqualification.
  2. Select a new auditor. Identify an eligible CA/firm and obtain written consent and a Section 141 certificate.
  3. Board appointment. The Board passes a resolution filling the vacancy within 30 days.
  4. Member approval (resignation cases). If the vacancy arose by resignation, call a general meeting within three months to approve the Board's appointment.
  5. File ADT-1. File ADT-1 within 15 days of the appointment.
  6. Fix tenure. The appointment runs only until the conclusion of the next AGM, where a regular appointment is made.

Forms, Attachments & Fees

ItemPurposeTimeline
ADT-3Resignation by outgoing auditorWithin 30 days of resignation
Board resolutionFill the casual vacancyWithin 30 days of vacancy
General meetingApprove appointment (resignation cases)Within 3 months of Board's recommendation
ADT-1Intimate appointment to RegistrarWithin 15 days of appointment

Timeline & Due Dates

Key timelines: Board fills the vacancy within 30 days; member approval within three months (resignation cases only); ADT-1 within 15 days; and the auditor's term runs to the next AGM. Where the outgoing auditor resigned, the ADT-3 filing also carries a 30-day clock.

Penalty for Delay / Non-compliance

Delay in filing ADT-1 attracts escalating additional fees under Section 403. Leaving the office of auditor vacant is a default under the audit provisions and can attract penalty on the company and officers in default. Missing the three-month member-approval window in resignation cases can invalidate the appointment.

Practical Tips

  • Distinguish resignation from other causes at the outset — only resignation triggers the member-approval requirement.
  • Ensure the outgoing auditor's ADT-3 is on record before the new appointment.
  • Remember the term is short — only until the next AGM — so plan the regular Section 139(1) appointment.
  • Get consent and the Section 141 certificate ready before the Board meeting.

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Quick recapKey facts & short answers

Key Facts About Fill a Casual Vacancy

  • Applies in: All states across India, under the relevant central law.
  • Mode: Mostly online via the official government portal.
  • Typical timeline: Ranges from a few days to a few weeks depending on the case.
  • Non-compliance: May attract penalties, interest or late fees.
  • Expert help: TaxClue completes the entire process end to end for you.

What is a casual vacancy of auditor?

A casual vacancy arises when the office of auditor becomes vacant before the end of the term — for example due to resignation, death or disqualification of the auditor.

Who fills a casual vacancy caused by resignation?

A casual vacancy caused by resignation is filled by the Board within 30 days, but that appointment must be approved by the members at a general meeting within three months of the Board's recommendation.

Keep your documents in an order a stranger could follow — one day an officer or auditor will have to.

— TaxClue Compliance Desk

Fill a Casual Vacancy: a key compliance topic in Indian tax and corporate law that businesses and individuals must understand to remain compliant.

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Why This Matters

Staying compliant with Indian regulations protects your business from penalties, interest and unnecessary legal trouble. It is always wise to maintain proper records and documentation so that any future scrutiny can be handled smoothly.

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About the author
Vikas Sharma Tax & Compliance Expert at TaxClue

Experienced in company registration, GST, trademark, and compliance. Helping Indian businesses stay compliant.

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Disclaimer: This article is for general informational purposes only and does not constitute professional tax, legal or financial advice. Laws, rates and due dates change and can vary by individual case — always verify with the relevant government source (e.g. mca.gov.in, incometax.gov.in) or consult a qualified professional before acting. TaxClue accepts no liability for decisions taken based on this content.

People also ask

Questions, answered

Short, direct answers to the 6 questions readers ask most on this topic.

A casual vacancy arises when the office of auditor becomes vacant before the end of the term — for example due to resignation, death or disqualification of the auditor.

A casual vacancy caused by resignation is filled by the Board within 30 days, but that appointment must be approved by the members at a general meeting within three months of the Board's recommendation.

For a vacancy arising otherwise than by resignation (e.g. death), the Board fills it within 30 days without needing member ratification.

The auditor filling a casual vacancy holds office until the conclusion of the next annual general meeting.

Yes. The company files ADT-1 within 15 days to intimate the Registrar of the appointment made to fill the casual vacancy.

The resigning auditor files ADT-3 within 30 days of resignation; the casual-vacancy appointment then follows.