Know your OPC compliance calendar May 2026 | Biz Flow Kit
OPC Compliance Calender: Introduction
OPC Compliance Calendar May 2026 helps One Person Companies stay updated with important ROC, GST, TDS, and annual compliance deadlines. Whereas, OPCs have comparatively simpler compliance requirements than other business structures, timely filings and proper record maintenance are still essential to avoid penalties and legal issues.
However, failure to meet any deadline can attract hefty fines. Thus, being compliant ensures that operations are run smoothly, avoids legal problems, and enhances credibility. In short, an OPC compliance calendar helps businesses stay legally compliant and operationally organized.
OPC Compliance Due Dates May 2026
| Compliance | Form | Due Date | Applicability |
| MSME Return (Oct–Mar Half-Yearly) | MSME-1 | 30th April 2026 (can be filed in May if missed) | OPCs with outstanding dues to MSMEs |
| TDS Payment (April 2026) | Challan ITNS-281 | 7th May 2026 | If OPC has TDS liability |
| GSTR-1 (April 2026) | GSTR-1 | 11th May 2026 | If OPC is GST registered (monthly filer) |
| GSTR-3B (April 2026) | GSTR-3B | 20th May 2026 | All GST-registered OPCs |
| Books of Accounts Finalization | — | Ongoing in May | Mandatory for all OPCs |
| Statutory Registers Update | — | Ongoing | Maintain proper company records |
Note: MSME Form I for the October 2025 to March 2026 period was due on 30 April 2026. If the filing was missed, the OPC should file the form immediately to avoid continued non-compliance and possible penal consequences.
Important Compliance Points for OPC compliance
1. Monthly Tax Compliance
Although ROC reporting is minimal, tax reporting is done monthly:
- TDS payment should be paid by 7th May.
- GST returns (GSTR-1 and GSTR-3B) should be submitted within the time.
- Late tax payment results in interest and penalties.
2. MSME Return Follow-Up
- In case of MSME-1 (30th April) being missed, then immediately file it in May.
- Only applicable when there are outstanding payments to MSMEs.
3. Preparation for Upcoming ROC Filings
May is the month to prepare future filings:
- Beginning to prepare financial statements.
- Arrange invoices, expenses and bank records.
- Prepare for AOC-4 and MGT-7A filings.
4. Internal Compliance
- Maintain Books of Accounts
- Record all financial transactions.
- Make sure everything is correct to prevent problems when filing.
Update Statutory Registers
- Keep records of directors and decisions update
- Keep appropriate records to check compliance.
- Periodically update partner data.
- Alterations to files in case of addition or resignation.
Late Fees, Penalties & Interest in OPC compliance calendar
Missing deadlines can lead to additional costs and legal issues:
- ROC Late Fees: 100 per day (there is no limit in most cases)
- GST Fine: Late charges + interest (usually 18% per annum)
- TDS Interest; Late deduction: 1% per month and Late payment 1.5% per month.
Continuous non-compliance with ROC and statutory filing requirements may result in additional penalties, notices, director disqualification in certain cases, or company strike-off proceedings.
Other Important OPC Forms You Should Know
| Compliance | Form | Due Date | Purpose |
| Financial Statement Filing | AOC-4 | Within 180 days from the end of FY | Filing of financial statements |
| Annual Return | MGT-7A | Within 60 days from AOC-4 due date | Simplified annual return for OPC |
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Conclusion
In short, May 2026 is a maintenance and preparation month for OPC compliance calendar . While major ROC filings are not due, tax compliance, record-keeping, and planning ahead are crucial. To avoid late fees, penalties, and compliance risks, it is always better to stay ahead with expert guidance.
Stay updated with every important due date through our May 2026 Compliance Calendar, covering GST, TDS, Income Tax, PF, ESI, LLP, OPC, and company law compliances in a single, easy-to-access place.
Suggested Reads:
Company Compliance Due Dates May 2026
Compliance Calender April 2026
GST Compliance Calender May 2026
TDS and TCS Compliance Calendar May 2026
Frequently Asked Questions
1. What happens if an OPC misses filing AOC-4 on time?
In case of not filing AOC-4 within the due date, a late fee of 100 rupees per day is imposed without any upper limit. The constant delay can also initiate the notices and affect the compliance level of the company.
2. Can an OPC file MGT-7A without filing AOC-4 first?
No, AOC-4 should be filed prior to MGT-7A. MGT-7A will have to be founded on previously filed financial statements to be consistent and accurate since it will include financial information.
3. When does an OPC mandatorily convert into a private limited company?
Mandatory conversion provisions based on turnover and paid-up capital thresholds were removed. OPCs can now convert voluntarily at any time subject to legal requirements.
4. Does an OPC need to file GST returns even with no business activity?
Yes, when the OPC is GST registered, then it is required to submit the NIL returns even in the absence of a transaction. Failure to file may lead to fines and loss of GST registration.
5. What are the consequences of not filing MSME-1 for an OPC compliance?
Penalties may be imposed on the company and directors may face penalties up to 25,000 INR in case of failure to file MSME-1. It also makes compliance suspects on the inspection or audit.
6. Can an OPC skip maintaining statutory registers if there are no changes?
No, OPCs should have updated statutory registers at any given time. Records need to be well documented even in case of no changes and they should be accessible whenever needed.
7. How does delay in TDS payment affect an OPC compliance financially?
Overdue TDS payment is subject to interest of 1.5% per month and fines. It also affects the compliance ratings and can result in the Income Tax Department notices.
8. What is the biggest compliance mistake OPC owners usually make?
The most common mistake is to disregard monthly compliance such as TDS and GST and concentrate on annual compliance only. This leads to penalties, interest and unwarranted legal complications.
9. How can OPC compliance calendar ensure they never miss compliance deadlines?
OPCs are advised to have a calendar of compliance, reminders, and keep a track of the due dates. Alternatively, professional services such as Ebizfiling can be used to take care of filings, reminders and documentation without failing to meet deadlines.
10. How does Ebizfiling help in OPC compliance calendar management?
Ebizfiling offers end-to-end services such as GST, TDS, ROC, OPC etc compliance services. Their professionals make sure that they submit their filings on time, minimize mistakes, and assist OPCs in evading penalties and concentrate on developing their business.
