Fast-Track Merger Under Section 233: The 2025 Rules, Process and Timeline (Complete 2026 Guide)

By CS Sapna Malpani, Practising Company Secretary, Bangalore  |  Last updated: 26 June 2026

Two roads lead to the same merger. One runs through the National Company Law Tribunal, takes twelve to eighteen months, and bills lakhs in legal and tribunal costs. The other runs through a Regional Director’s office, finishes in roughly three to four months, and never sees a courtroom. That second road is the fast track merger under Section 233 of the Companies Act, 2013, and on 4 September 2025 the government quietly widened it to cover a far larger set of companies than before. Most unlisted private companies that were locked out a year ago can now use it. Indian startups bringing their parent company home from Delaware or Singapore are already using it. If your group is carrying an idle shell entity, a dormant subsidiary, or a foreign holding company you want to collapse into India, the difference between the two roads is measured in quarters of a year and rupees of tax.

Why the merger route you pick decides your timeline

Every amalgamation in India is a scheme of arrangement. The default home for a scheme is Sections 230 to 232 of the Companies Act, where the National Company Law Tribunal directs meetings of members and creditors, hears any objector, and then sanctions the scheme by order. That process exists for good reason. It protects minority shareholders, dissenting creditors and the public when two substantial businesses combine. It is also slow. Cause lists are long, hearings get adjourned, and a straightforward group clean-up can sit in the Tribunal for more than a year while nothing about the underlying business is in dispute.

Section 233 was written for the cases where that heavy machinery is overkill. When a parent absorbs its own wholly-owned subsidiary, or two small group companies combine, there is rarely an outside party to protect. Sending those schemes through a full Tribunal process clogs the NCLT and punishes the company with delay. So the law offers a lighter route: get 90% of your members and 90% of your creditors to agree, satisfy the Registrar and the Official Liquidator that nobody is being prejudiced, and let the Central Government, acting through the Regional Director, register the scheme. No Tribunal sanction, no public hearing, no open-ended wait.

The catch, until recently, was the guest list. Section 233 read with Rule 25 only let in a narrow set of companies: two or more small companies, a holding company with its wholly-owned subsidiary, and later a couple of startup combinations. An ordinary unlisted private company with two crore of debt and a sister entity it wanted to fold in was simply not eligible. It had to queue at the Tribunal like everyone else. That is the rule that changed in September 2025, and it is why this route suddenly matters to thousands of companies that ignored it before.

Fast track merger vs NCLT merger: the route comparison

Set the two routes side by side and the trade becomes clear. The choice is less about which route is better in the abstract and more about which one your companies qualify for, and what you will give up in time and cost.

That 90% threshold is what you pay for skipping the Tribunal. A fast track merger asks for a much higher level of agreement than the Tribunal route’s 75%, because it removes the judicial check that protects dissenters. In a wholly-owned group that consent is automatic, which is exactly why parents and subsidiaries are the natural users. Where there is a genuine minority that will not reach 90%, the Tribunal route remains the honest answer.

What changed: the 2024 and 2025 amendments

Two amendments to the Companies (Compromises, Arrangements and Amalgamations) Rules, 2016 rebuilt this route in under a year.

September 2024 opened the door to reverse flips. The Ministry of Corporate Affairs notified the amendment on 9 September 2024 and inserted Rule 25A(5), which expressly allowed a foreign holding company to merge into its Indian wholly-owned subsidiary through the fast track route. Until then a cross-border inbound merger of this kind needed Tribunal sanction. The same amendment relaxed the timeline for filing the scheme with the Regional Director from 7 days to 15 days after the meetings, easing a deadline that used to catch companies out.

September 2025 opened the door to ordinary unlisted companies. The Companies (Compromises, Arrangements and Amalgamations) Amendment Rules, 2025 were notified on 4 September 2025 (G.S.R. 603(E)) and substituted a much wider Rule 25. The headline change is that two or more unlisted companies, other than Section 8 companies, can now merge through the fast track route. The condition is a debt test: the companies in the scheme must have aggregate outstanding loans, borrowings, debentures and deposits not exceeding ₹200 crore as per their latest audited balance sheet, with no default in repayment. To prove it, the amendment introduced a new auditor’s certificate in Form CAA-10A.

The 2025 rules also formalised two more eligible combinations: a merger between subsidiaries of the same holding company (where the transferor is unlisted), and a merger of a holding company, whether listed or unlisted, with one or more of its unlisted subsidiaries. Read together, the two amendments turn Section 233 from a niche provision for small companies into the default first option for almost any intra-group reorganisation that does not involve a listed transferor or a hostile minority.

The reverse flip wave, and why founders care

The most-watched use of this route has nothing to do with small companies. It is the homecoming of Indian startups that once incorporated their parent abroad. A reverse flip shifts that holding structure back to India, usually by merging the foreign parent into the Indian operating company. Since the 2024 amendment, that inbound merger can run as a Section 233 fast track merger with Regional Director approval, cutting the corporate-law leg of the move to about three to four months.

The list of companies that have redomiciled or are exploring it reads like a roll call of Indian technology: PhonePe, Groww, Zepto, Razorpay, Dream11 and KreditBee among them. Razorpay completed its inbound merger from the United States to India in May 2025 with Regional Director approval. The reason the corporate-law shortcut matters so much is that the tax cost of these moves is anything but small. Press reporting put PhonePe’s 2022 restructuring tax at around ₹8,000 crore and Groww’s 2024 reverse flip at roughly ₹1,300 crore. When the tax bill is that large, founders want the legal process itself to be fast, certain and cheap, and Section 233 delivers that part. The tax leg is a separate question for a tax advisor, and it is the part of a reverse flip that needs the most careful planning.

For an ICP that spends its life raising capital, the lesson is broader than reverse flips. Clean group structures raise money faster. A buyer or a Series B investor running diligence on a tangle of dormant subsidiaries will either discount the valuation or ask you to clean it up first. Section 233 is now the cheapest tool to do that cleaning before the round, not during it. If you are also rationalising your cap table, our guides on increasing authorised share capital and on choosing between a rights issue, private placement and preferential allotment sit alongside this one.

Who is eligible for a fast track merger now

After the 2025 rules, the eligible classes under Rule 25 are wider than most advisors realise. The table below sets out who can use the route today.

Two exclusions are worth remembering. Section 8 charitable companies cannot use the unlisted-company route, and a listed company cannot be the transferor in the new unlisted combinations. Where the transferee is listed but the transferor is an unlisted subsidiary, the route is available, which is the structure many groups will use.

The fast track merger process, step by step

The procedure is short by Indian standards, but each step has a form and a deadline. Miss the sequence and the Regional Director will return the scheme.

Step 1 to 2: board approval and the CAA-9 notice. Each company’s board approves the draft scheme of merger, including the share exchange ratio supported by a registered valuer’s report where the merger is not between a holding company and its wholly-owned subsidiary. The companies then issue a notice of the proposed scheme in Form CAA-9 to the Registrar of Companies and the Official Liquidator, inviting objections and suggestions. They have 30 days to respond.

Step 3: declaration of solvency in CAA-10. Before convening the meetings, each company files a declaration of solvency in Form CAA-10 with the Registrar. Companies relying on the new ₹200 crore unlisted route also file the auditor’s certificate in Form CAA-10A confirming that aggregate borrowings are within the limit and there is no default.

Step 4 to 5: the 90% approvals. The scheme must be approved by members holding at least 90% of the total number of shares, and by creditors, or each class of creditors, representing at least 90% in value. Creditor approval can come from a meeting called on 21 days’ notice, or by written consent, which is often the cleaner path in a closely held group.

Step 6 to 7: file results and get the order. The transferee company files the scheme and the results of the meetings in Form CAA-11 with the Central Government (Regional Director), the Registrar and the Official Liquidator within 15 days of the conclusion of the meetings. If neither the Registrar nor the Official Liquidator raises a sustainable objection, the Regional Director registers the scheme and issues a confirmation order in Form CAA-12. If the Regional Director believes the scheme is not in the public interest or the interest of creditors, the matter can be referred to the Tribunal under Section 232. Once the confirmation order is filed with the Registrar, the transferor company stands dissolved without winding up.

The realistic timeline

The regulatory steps are quick. What stretches a merger is the work before the forms: agreeing a valuation, reconciling inter-company balances, and getting every creditor to 90%. Companies that start the creditor conversation early finish near the bottom of this range. Those that treat consent as an afterthought slip well past it.

The deeper implication

According to CS Sapna Malpani, the 2025 amendment changes the default question advisors should ask. For years the first question on any merger was “how long will the NCLT take”, and the answer shaped the whole deal calendar. For an intra-group reorganisation today the better first question is “are we eligible for Section 233”, because if the answer is yes, the calendar shrinks by a year. The companies that lose out are the ones still defaulting to the Tribunal out of habit, paying for a process their structure no longer needs.

The forward signal is that this liberalisation is unlikely to reverse. The government’s stated aim is to declog the NCLT, and the Corporate Laws (Amendment) Bill, 2026 carries the same direction of travel toward simpler restructuring. Groups should expect the fast track route to stay open and possibly widen further, which makes it worth building intra-group mergers around Section 233 as the base case rather than the exception. Treat the Tribunal route as the fallback for listed transferors and genuine minority disputes, not the starting point.

How Section 233 sits next to related provisions

Three provisions are often confused with the fast track route. A merger under Sections 230 to 232 is the full Tribunal scheme, used for listed companies, contested mergers and demergers, and any case that cannot reach the 90% threshold. A capital reduction under Section 66 also needs Tribunal confirmation and is the right tool when you want to return capital or write off losses rather than combine two entities. And a buyback under Section 68 returns cash to specific shareholders without combining companies at all; our buyback guide covers when that fits better than a merger. The test is purpose: combine two companies and remove one, use Section 233 if eligible; shrink capital in one company, use Section 66; pay out chosen holders, use Section 68.

One practical reminder for anyone running these in parallel with annual filings: a merger does not pause your routine compliance. Annual returns, board meetings and statutory registers continue for every company in the scheme until the transferor is dissolved. Our 2026-27 compliance calendar keeps those deadlines visible while the merger runs.

Sources and references

• Section 233, Companies Act, 2013 — India Code (bare Act)
• Companies (Compromises, Arrangements and Amalgamations) Amendment Rules, 2025, G.S.R. 603(E) dated 4 September 2025 — IBC Laws (notification text)
• MCA press release: Government widens the scope of fast track mergers under the Companies Act, 2013 — Press Information Bureau
• ICSI: Merger and Amalgamation under Section 233 (Fast Track Merger) — ICSI guidance note (PDF)
• Analysis of the 2025 amendment and the ₹200 crore route — Taxmann and Vinod Kothari Consultants
• Reverse-flip context and company examples — Mondaq (secondary commentary; tax figures as reported)

Frequently asked questions

What is a fast track merger under Section 233?

A fast track merger is a simplified merger route under Section 233 of the Companies Act, 2013 for certain classes of companies. Instead of a full National Company Law Tribunal process under Sections 230 to 232, the scheme is approved by the Central Government acting through the Regional Director. Members holding at least 90% of the total number of shares and creditors representing at least 90% in value must approve it. Because it skips the Tribunal, a clean fast track merger usually completes in about three to four months rather than twelve to eighteen.

Who is eligible for a fast track merger after the 2025 rules?

The Companies (Compromises, Arrangements and Amalgamations) Amendment Rules, 2025, notified on 4 September 2025, widened Rule 25. Eligible classes now include two or more small companies, a holding company and its subsidiary, two or more startups, subsidiaries of the same holding company, a listed or unlisted holding company merging with its unlisted subsidiaries, and two or more unlisted companies whose aggregate outstanding loans, debentures and deposits do not exceed ₹200 crore with no default in repayment. A foreign holding company can also merge into its Indian wholly-owned subsidiary through this route.

What is the difference between a fast track merger and an NCLT merger?

A fast track merger under Section 233 is approved by the Regional Director and does not need a National Company Law Tribunal hearing, so it is faster and cheaper, but it is open only to eligible classes of companies. A merger under Sections 230 to 232 needs the Tribunal to convene meetings and sanction the scheme, which suits larger or contested mergers but typically runs twelve to eighteen months. If the Regional Director feels a fast track scheme is not in the public interest, the matter can still be referred to the Tribunal.

What is a reverse flip merger and how does Section 233 help?

A reverse flip is when a startup that had earlier moved its parent company abroad shifts its holding structure back to India. Since the September 2024 amendment, a foreign holding company can merge into its Indian wholly-owned subsidiary through the Section 233 fast track route, with approval from the Regional Director instead of the Tribunal. This has cut the corporate-law leg of a reverse flip to roughly three to four months, which is one reason several large startups have redomiciled to India. The tax cost of a reverse flip is a separate matter and needs its own planning.

Which forms are filed in a fast track merger?

Form CAA-9 is the notice of the proposed scheme issued to the Registrar and Official Liquidator inviting objections. Form CAA-10 is the declaration of solvency, and Form CAA-10A is the auditor’s certificate introduced in 2025 for the borrowing-threshold route. Form CAA-11 is filed by the transferee company with the results of the members and creditors meetings. Form CAA-12 is the confirmation order issued by the Regional Director that gives the merger legal effect.

How long does a fast track merger take in 2026?

A well-prepared fast track merger usually takes about three to four months from board approval to the Regional Director’s confirmation order. The Registrar and Official Liquidator have 30 days to raise objections after the CAA-9 notice, the transferee files results in CAA-11 within 15 days of the meetings, and the Regional Director issues the confirmation order if there is no sustainable objection. Drafting, valuation and securing the 90% approvals usually take longer than the regulatory steps themselves.

Can two unlisted private companies do a fast track merger?

Yes, since the 2025 amendment. Two or more unlisted companies, other than Section 8 companies, can merge through the Section 233 fast track route provided their aggregate outstanding loans, borrowings, debentures and deposits do not exceed ₹200 crore as per the latest audited balance sheet, and there is no default in repayment. The companies must also file an auditor’s certificate in Form CAA-10A confirming the position. Earlier, two ordinary unlisted companies could not use this route at all.

This article is general information on the Companies Act, 2013 and the Companies (Compromises, Arrangements and Amalgamations) Rules as amended, not legal or tax advice. Merger eligibility, valuation and the tax treatment of a reverse flip turn on the specific facts of each group. Confirm your position with a practising professional before you act. Last updated 26 June 2026.