---
title: "MCA21: India's Corporate Affairs E-Governance Portal"
description: "MCA21 is the Ministry of Corporate Affairs portal for online company filings under the Companies Act 2013. Learn its registry mechanics and Version 3.0 rollout."
url: "https://modeldiplomat.com/learn/glossary/mca21"
---

[New](https://modeldiplomat.com/)

#

Model Diplomat Research Team · Last reviewed July 7, 2026

TL;DR

- MCA21 is the Indian Ministry of Corporate Affairs' comprehensive e-governance project designed to facilitate electronic filing and public access to statutory company and LLP documents under the Companies Act.
- What is the difference between MCA21 and SPICe+?
- Which statutory provision makes electronic filing on MCA21 mandatory?
- Can the public access company filings on MCA21?
- Why was MCA21 Version 3.0 controversial?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated July 7, 2026

Go beyond the definition

## Research MCA21 like a delegate

Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students.

## Research it like a delegate

Research on modeldiplomat.com

## Ask a follow-up about MCA21

Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers.

[Start research on MCA21](https://modeldiplomat.com/search?q=Explain%20MCA21%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources)

Example

In January 2023, when the Ministry of Corporate Affairs migrated 56 company forms to MCA21 Version 3.0, the Institute of Company Secretaries of India reported widespread login and filing failures, forcing the MCA to extend deadlines and waive additional fees.

Keep learning

## Go deeper than the definition

[Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services)

## Take MCA21 beyond the glossary

Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.