The most expensive OPC compliance mistake in Mumbai is not a missed form. It is a filing cycle built around a registrar that no longer holds your file. Plenty of owners still assume a single ROC Mumbai covers everything from Fort to Kalyan. Since 16 February 2026, it does not. Company records in the region now sit with two registrars, and your forms, notices and inspections follow whichever office holds yours. The fix costs nothing: confirm your district once, then build the year around the right office. Below are the deadlines, the split, the true cost of slipping, and how we run the whole cycle for ₹9,999 a year.
What must a Mumbai OPC file this year, and by when?
A One Person Company skips the AGM, yet the calendar still bites. For the financial year ended 31 March 2026, these are the dates that decide everything.
| Filing | Due date | Cost of missing it |
|---|---|---|
| AOC-4 with audited accounts | 27 September 2026 | ₹100 a day additional fee, no cap |
| MGT-7A annual return | 28 November 2026 | ₹100 a day additional fee, no cap |
| DIR-3 KYC for the director | 30 September 2026 | ₹5,000 to reactivate the DIN |
| ITR-6 for the company | 31 October 2026 | Late fee plus interest under income tax law |
| Tax audit report, where turnover requires one | 30 September 2026 | Separate income tax penalty |
Everything hangs off the audit. AOC-4 cannot go in without the auditor's report, so the books need to close well before the September crunch. Both ROC forms also carry normal filing fees linked to your capital; the table shows only what lateness adds on top. The form level detail lives in our complete OPC annual compliance guide for India; this page stays on the Mumbai layer.
Which registrar receives your OPC filings, Mumbai-I or Mumbai-II?
The test takes one line. Greater Mumbai is exactly the two districts of Mumbai City and Mumbai Suburban, so a registered office inside BMC limits files with ROC Mumbai-I at Mumbai. Registered offices elsewhere answer to ROC Mumbai-II at Navi Mumbai, which covers eight districts: Thane, Palghar, Raigad, Nashik, Dhule, Jalgaon, Nandurbar and Chhatrapati Sambhajinagar. A textile OPC in Kalbadevi files with the first office. A warehousing OPC in Bhiwandi or Panvel files with the second.
The portal does not change. Every form still goes through MCA V3, and your CIN keeps the MH state code every Maharashtra company carries. What changes is the office that reviews your filings, raises resubmission remarks and signs the notices. One wrinkle deserves attention: moving a registered office across that boundary, say Mulund to Thane, now needs Regional Director confirmation on Form INC-23 before the file changes hands. Older guides describing a simple INC-22 shift are out of date.
For the yearly cycle this matters at three moments. A resubmission remark on AOC-4 comes from your own registrar. A show cause notice for late filing comes from the same office. And if the company goes quiet, that office decides when to act. Knowing which of the two you answer to is step one of every engagement we run.
What does a lapsed year actually cost?
The ₹100 a day figure gets quoted everywhere. The quieter costs hurt more:
- Two missed ROC forms mean two fee meters running at once, and neither meter has a cap.
- A director who skips DIR-3 KYC works on a deactivated DIN, which blocks filings in every other company where you hold a seat. An OPC has no second director to cover while yours is frozen.
- Your registrar keeps suo motu strike off powers, and restoring a struck off company means proceedings before the NCLT Mumbai Bench.
- Banks read MCA master data during credit appraisal, and an overdue AOC-4 is visible to every lender you approach.
Closing down is not an escape hatch either. A voluntary strike off on STK-2 is processed centrally by the Registrar, C-PACE, and pending annual filings usually have to be completed before that application moves. Either way, the cheapest exit from a compliance hole is the same as the cheapest way to avoid one: file the pending year quickly and stop the accrual.
Which Mumbai OPCs slip most often?
Three patterns repeat every season:
- Warehousing and logistics operators around Bhiwandi. Peak movement season overlaps the September and November due dates, so the books wait and the fee meter starts. These OPCs also answer to ROC Mumbai-II, not the city office an older checklist may still name.
- Family firms going corporate, like a Kalbadevi textile house that shifted from a proprietorship into an OPC. After decades of a pure income tax rhythm, the first ROC cycle feels alien, and MGT-7A is the form that slips.
- Zero revenue OPCs parked for a future project. The owner assumes nothing happened, so nothing is due. Wrong: the audit, AOC-4, MGT-7A and a nil ITR-6 all still apply, even to a company that never billed a rupee.
How do we run the yearly cycle for you?
- We confirm the district of your registered office, map the file to the right registrar, and pull MCA master data to catch anything already overdue.
- You share bank statements, invoices, expense records and last year's financials through our portal; nothing moves by courier.
- Our CA team prepares the accounts and completes the statutory audit, usually 7 to 10 working days once records are complete.
- We file AOC-4 and then MGT-7A on the MCA V3 portal and send you the SRN for each form.
- We prepare and file ITR-6, along with the tax audit report where turnover requires one.
- You get a filing summary and the next year's calendar, with reminders 30 days before every due date.
What we need from you
- Bank statements for the full financial year, for every account the OPC operates.
- Sales and purchase invoices, expense records, and statements for any loans.
- The leave and licence agreement or ownership proof behind your registered office, so the jurisdiction check is clean.
- Last year's financial statements and return, unless this is your first year.
- A valid DSC for the director, active through the filing window.
While the ROC cycle runs, we also track the Maharashtra layer. The company holds a PTEC, and you as director carry a separate one, each a flat ₹2,500 a year paid on mahagst.gov.in with no return attached. A PTRC enters the picture only if the OPC takes on employees; a solo company keeps this layer light. National checklists rarely mention any of it; Mumbai practice treats it as part of the same annual loop.
Why LegalX India in Mumbai?
Because the details above are exactly where generic providers stumble. More than 15,000 businesses have filed through our CA and CS team of 50+ experts. Clients rate the work 4.8 on Google. The price stays flat at ₹9,999 for the yearly OPC package, with any government fees billed separately and quoted before we file. The work runs fully online whether your registered office sits in Powai, Kalbadevi or Bhiwandi. Send us your CIN today, and an expert calls you back within 30 minutes with your registrar mapping and a filing plan for the year.