ADT-1 Due Date, Penalty and How to File
ADT-1 (File appointment of first auditor (ADT-1)) applies to Private Limited Company and One Person Company (OPC). ADT-1 within 15 days of the board meeting that appoints the first auditor (about 45 days from incorporation). Mandatory even for the first auditor per the Companies (Audit and Auditors) Amendment Rules 2025. Source: indiafilings.com/adt-1-filing/2025-update
ADT-1 at a glance
- Form
- ADT-1
- Applies to
- Private Limited Company and One Person Company (OPC)
- Due date
- Once, within 45 days of incorporation
- Category
- MCA / ROC
- Filing portal
- MCA V3
- CA required
- Yes, a CA/CS is required
Dates reflect Indian statute as of mid-2026 and are extension prone (the MCA and CBDT issue circulars). Always confirm with your CA before filing.
When ADT-1 applies, and when you can skip it
Every newly incorporated company (not LLPs).
ADT-1: frequently asked
What is the due date of ADT-1?+
ADT-1 (File appointment of first auditor (ADT-1)) is due once, within 45 days of incorporation.
Who needs to file ADT-1?+
ADT-1 applies to Private Limited Company and One Person Company (OPC). Every newly incorporated company (not LLPs).
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