RENU SURESH

Expert

Published on: Jul 30, 2026

Documents Required for Filing Form ADT-1

Form ADT-1 is a statutory form that must be filed with the Ministry of Corporate Affairs (MCA) to notify the Registrar of Companies (ROC) about the appointment or reappointment of an auditor. Filing Form ADT-1 is mandatory under Section 139 of the Companies Act, 2013. However, before filing ADT-1, companies must collect and attach several key documents to ensure the filing is accurate, complete, and compliant with MCA requirements.

This article outlines all the Documents Required for filing Form ADT-1, explains their significance, and provides practical tips to help companies avoid delays, rejections, or penalties.

When is Form ADT-1 Required?

Form ADT-1 must be filed in the following situations:

Appointment of the first auditor by the Board of Directors
Appointment or reappointment of auditors at the Annual General Meeting (AGM)
Appointment of an auditor to fill a casual vacancy (due to resignation, death, disqualification, etc.)
Reappointment of an existing auditor after the expiry of the term

It must be filed within 15 days of the auditor's appointment.

Mandatory Documents for ADT-1 Filing

Here’s a detailed list of the documents that must be attached to Form ADT-1:

1. Board Resolution or Shareholders’ Resolution

Depending on who appoints the auditor, either of the following is required:

Copy of Board Resolution: If the auditor is appointed by the Board (e.g., for first auditor or in case of a casual vacancy), the certified true copy of the board resolution approving the appointment is mandatory.
Copy of Shareholders' Resolution (AGM/EGM): If the auditor is appointed or reappointed at the AGM or an EGM, the resolution passed by the members must be attached.

Tip: Ensure that the resolution clearly mentions the name of the auditor, term of appointment, and their firm registration number.

2. Auditor’s Consent Letter

A written consent from the proposed auditor or audit firm is essential. This document confirms that the auditor agrees to accept the appointment.

It should include:

Name and membership number of the auditor
A statement declaring their willingness to be appointed
Signature and date

Tip: Obtain this consent before the Board or shareholders pass the resolution.

3. Eligibility Certificate Under Section 141

As per Section 141 of the Companies Act, the auditor must certify their eligibility and non-disqualification to act as an auditor of the company.

This certificate must declare:

That the auditor is not disqualified under Section 141(3)
The appointment complies with the limits specified under Section 141(3)(g)
They are not in contravention of the code of ethics or any pending professional misconduct cases

Tip: Always check that the eligibility certificate is printed on the auditor’s letterhead and duly signed.

4. Copy of Intimation Sent to the Auditor

The company must officially inform the newly appointed auditor about their appointment via a formal communication.

This intimation should include:

Name of the company
Date and reference of the board/shareholders' meeting
Term of appointment
Any other relevant details

Attach a copy of this communication to Form ADT-1 as proof of formal intimation.

Additional Documents (If Applicable)

Depending on the nature of the appointment, the following may also be required:

5. Copy of Auditor Resignation Letter (in case of Casual Vacancy)

If the appointment is to fill a casual vacancy due to resignation, attach a copy of the resignation letter from the outgoing auditor. This letter should mention the reason and effective date of resignation.

6. Copy of EGM Notice & Explanatory Statement (If applicable)

If the auditor is appointed at an Extraordinary General Meeting (EGM), a copy of the notice and explanatory statement sent to shareholders should also be attached.

This is particularly applicable in case of resignation, where shareholder approval is required within 3 months.

7. PAN and Membership/Firm Registration Details of the Auditor

While not separately attached, these details must be accurately entered in the form. Keep a copy of the PAN card and ICAI membership certificate handy for verification.

8. Digital Signature Certificate (DSC)

Though not a file attachment, Form ADT-1 must be digitally signed using the Digital Signature Certificate of:

One Director of the company
A practicing Chartered Accountant (CA), Company Secretary (CS), or Cost Accountant (CMA)

Tip: Ensure both DSCs are valid and registered on the MCA portal before filing.

Form ADT-1 Document Preparation Checklist

Document	Mandatory	Notes
Board/Shareholders’ Resolution	Yes	Certified True Copy
Auditor's Consent Letter	Yes	On letterhead
Eligibility Certificate	Yes	Section 141
Company’s Intimation Letter	Yes	Addressed to auditor
Auditor Resignation Letter	(if applicable)	In casual vacancy cases
EGM Notice & Statement	(if applicable)	Required in EGM-based appointments

Penalty for Incomplete/Incorrect Filing

If any required document is missing or incorrect:

The form may be sent for resubmission
Or worse, rejected, requiring a fresh filing and payment
Late filing beyond 15 days leads to additional fees and penalties

Hence, accurate documentation is key to smooth processing.

Conclusion

Filing Form ADT-1 isn’t just a procedural formality—it’s a vital part of a company’s statutory compliance under the Companies Act, 2013. To avoid penalties and ensure approval, you must gather all required documents, verify the details, and attach them correctly.

Whether appointing the first auditor, reappointing at the AGM, or filling a casual vacancy—collecting the proper set of documents is non-negotiable. Attach certified resolutions, auditor consent, eligibility certificates, and intimation letters to support your filing and demonstrate complete compliance.

How IndiaFilings Can Help

IndiaFilings offers expert support in preparing and filing Form ADT-1, including:

Drafting board/shareholder resolutions
Preparing consent letters and eligibility certificates
MCA form filling and DSC verification
End-to-end filing with real-time tracking and SRN updates

Need help filing Form ADT-1 without errors or delays? Let IndiaFilings handle the compliance while you focus on your business.

Back to Learn

Frequently Asked Questions

Common questions about Form ADT.

Form ADT-1 is a statutory form that must be filed with the Ministry of Corporate Affairs (MCA) to notify the Registrar of Companies (ROC) about the appointment or reappointment of an auditor. It is mandatory under Section 139 of the Companies Act, 2013, and must be filed within 15 days of the auditor's appointment in situations like appointing the first auditor, appointing or reappointing auditors at the Annual General Meeting (AGM), or filling a casual vacancy due to resignation, death, or disqualification of the previous auditor.

Some of the key documents required for filing Form ADT-1 include a copy of the Board Resolution or Shareholders' Resolution approving the auditor's appointment, the auditor's consent letter, an eligibility certificate under Section 141 confirming the auditor's non-disqualification, a copy of the intimation sent to the auditor informing them of their appointment, and any additional documents like the auditor's resignation letter (in case of a casual vacancy) or the EGM notice and explanatory statement (if applicable).

An auditor's consent letter is a crucial document for filing Form ADT-1 as it confirms that the proposed auditor or audit firm agrees to accept the appointment. This letter should include the auditor's name, membership number, a statement declaring their willingness to be appointed, and their signature and date. Obtaining this consent before the Board or shareholders pass the resolution is essential.

The eligibility certificate under Section 141 is a mandatory document that certifies the auditor's eligibility and non-disqualification to act as an auditor for the company. This certificate must declare that the auditor is not disqualified under Section 141(3), that the appointment complies with the limits specified under Section 141(3)(g), and that they are not in contravention of any code of ethics or pending professional misconduct cases.

If any required document is missing or incorrect during the filing of Form ADT-1, the form may be sent for resubmission or, in worse cases, rejected, requiring a fresh filing and payment. Additionally, late filing beyond the 15-day deadline leads to additional fees and penalties. Hence, accurate documentation is crucial for smooth processing and approval of the form.

No, Form ADT-1 cannot be filed without a valid Digital Signature Certificate (DSC). The form must be digitally signed using the DSC of either one director of the company or a practicing Chartered Accountant (CA), Company Secretary (CS), or Cost Accountant (CMA). Ensuring that both DSCs are valid and registered on the MCA portal before filing is essential.

In case the auditor's appointment is to fill a casual vacancy due to resignation, a copy of the resignation letter from the outgoing auditor must be attached to Form ADT-1. This letter should mention the reason and effective date of resignation.

While PAN and membership/firm registration details of the auditor are not separately attached as documents, these details must be accurately entered in the form. It is advisable to keep a copy of the auditor's PAN card and ICAI membership certificate handy for verification purposes.

Yes, IndiaFilings offers expert support in preparing and filing Form ADT-1, including drafting board/shareholder resolutions, preparing consent letters and eligibility certificates, filling out MCA forms and verifying DSCs, and end-to-end filing with real-time tracking and SRN updates. Companies can rely on IndiaFilings to handle the compliance requirements efficiently while they focus on their business operations.

Collecting all required documents accurately is crucial for Form ADT-1 filing as it ensures complete compliance with the Companies Act, 2013. Attaching certified resolutions, auditor consent, eligibility certificates, and intimation letters supports the filing and demonstrates that the company has adhered to the necessary statutory requirements. Failure to provide complete and correct documentation can lead to delays, resubmissions, rejections, and potential penalties.