ADT-1 Filing in Mumbai

₹999 buys the whole job here: the ADT-1 prepared by a CA team, the paperwork vetted, the submission made on the MCA V3 portal and the SRN sent across as your proof. Hold that against the other number in this story, ₹300 for every day the form runs late, and the decision prices itself. Three days of delay already costs more than the professional fee. This page is about ADT-1 filing in Mumbai specifically: the deadline arithmetic, the registrar question that changed in February 2026, and what we need from you to close the filing in 3 to 5 working days. The statutory background lives in our complete ADT-1 Filing guide for India; this page stays local.

What exactly is due, and how fast does the clock run?

A company gets 15 days from the AGM to tell its registrar about the auditor it has appointed or reappointed. Hold your AGM on 29 September 2026 and the window shuts on 14 October 2026. No extension applies here, and the count does not pause for weekends.

From day 16 the meter runs at ₹300 a day. Here is what delay looks like on paper:

The obligation sits with the company, not the auditor. It also repeats with every fresh appointment, including a new five year term for the same firm. The date that matters is the AGM date in your minutes, because everything counts from there.

Which registrar actually receives your ADT-1?

This is where 2026 changed the answer. Mumbai company records now split between two offices. ROC Mumbai-I holds companies whose registered office sits in the districts of Mumbai City and Mumbai Suburban, which together are exactly Greater Mumbai, the BMC area. An office anywhere else in the wider region, including Navi Mumbai, Thane, Kalyan, Bhiwandi, Vasai Virar, Mira Bhayandar and Panvel, answers to ROC Mumbai-II at Navi Mumbai. The split took effect on 16 February 2026 under MCA notification S.O. 4850(E) dated 23 October 2025.

The working test is one line. Inside BMC limits, your record sits with Mumbai-I. Anywhere else, Mumbai-II. A textile company on a Kalbadevi lane and a fund advisory in BKC both sit under Mumbai-I, and a Mulund address does too, because Mulund falls in the suburban district. Most older guides still describe a single ROC Mumbai, and correspondence drafted on that assumption goes to the wrong office.

The form itself goes in online on MCA V3 whatever your district, against the CIN that every Maharashtra company carries with MH as its state code. The registrar question decides who holds and scrutinises your record, not where you travel to submit, because you do not travel anywhere.

What does a missed ADT-1 really cost a Mumbai company?

The rupee exposure is capped, but the cap applies per default, and officers in default can carry the liability alongside the company itself. Let the filing slip across more than one appointment and the defaults stack, each with its own meter.

The quieter cost sits in the record. Filing history against a CIN is public, and in this city it gets read. A credit officer processing a working capital proposal from a desk in Fort will pull the MCA record before sanction. A buyer running diligence on a family company will treat gaps in the compliance trail as a management question, not a paperwork question.

For the Kalbadevi textile house that ran for decades as a partnership and incorporated only recently, this is the real adjustment. A partnership never had to tell any registrar who its accountant was. A company must, within 15 days, every time the appointment is made or renewed.

Which Mumbai companies does the 15 day window bite hardest?

• The newly converted family business. A Kalbadevi textile firm that moved from partnership to private limited is running its first AGM cycle under company law. Nobody in the family has filed an auditor appointment before, and the 15 day habit does not exist yet.
• The company outside BMC limits. A warehousing operator in Bhiwandi files with ROC Mumbai-II, yet half the guides it finds online still assume one registrar for the whole region.
• The company between secretaries. The person who tracked deadlines resigns, the AGM happens, the auditor is reappointed, and nobody starts the count.
• The promoter with several CINs. Each company holds its own AGM, and each appointment needs its own ADT-1. One forgotten entity is a complete, separate default.

How do we run your filing from our side?

1. First, the basics travel to us: CIN, AGM date, the auditor's firm registration and membership numbers, and the appointment period. Ten minutes on WhatsApp or email covers it.
2. Our CA and CS team drafts the resolution and appointment letter, then vets the consent letter from your auditor. Wording that misses current MCA expectations is corrected before submission, not after a rejection.
3. We confirm the signing director's DSC is valid and registered, then prepare and file the ADT-1 on the MCA V3 portal, under whichever of ROC Mumbai-I or ROC Mumbai-II your district answers to.
4. You get the SRN and the filed copy for your records. We archive a set ourselves and diarise your next AGM window, so the following year starts earlier.

Typical time from first message to SRN is 3 to 5 working days. Late cases jump the queue, because every extra day carries a cost.

What will we need from you?

• The CIN and the AGM date as recorded in the minutes
• The auditor's name as registered, with firm registration and membership numbers
• The appointment period approved at the meeting
• The auditor's consent and eligibility letter, which we draft for signature if it does not exist yet
• A valid DSC for the authorising director

That is the entire list. No physical papers, no notarisation, and no queue at any registrar's counter anywhere in the region.

Why LegalX India in Mumbai?

We run ROC compliance for Maharashtra companies across the region, from Fort and Kalbadevi to Thane and Panvel, and the registrar split is built into our intake. The first thing we check is the district on your registered office, because your registrar follows your address, never ours. Our office sits at Haware Fantasia Business Park, Sector 30A, Vashi, Navi Mumbai 400703. Walk in if you would rather talk face to face; nothing in the ADT-1 process requires it. 15,000+ businesses have used LegalX India, and the team counts 50+ CA and CS professionals. Phone us on +91 96356 85435, or leave your number and a callback lands within 30 minutes.