Vietnam Merger Control 2026: Filing Thresholds, Timelines and Deal Structuring Explained

Merger control Vietnam is one of the first regulatory questions any acquirer, private equity sponsor or joint-venture partner must answer before committing to a transaction, because the country’s competition regime requires certain deals to be notified and cleared before closing. The regime is anchored in the Law on Competition 2018, administered by the national competition authority under the Ministry of Industry and Trade, and it carries real consequences, including penalties for closing a notifiable deal prematurely, for parties who fail to comply.

As deal activity across Vietnam continues into 2026, the practical priorities for buyers remain the same: work out whether a filing is required, understand the review calendar, and structure the transaction so that regulatory conditionality is managed rather than left to chance. This guide sets out the framework, the thresholds, the process and the structuring tools that experienced deal teams rely on. It is written for practitioners who need concrete, actionable detail rather than a high-level overview.

TL;DR, Quick filing checklist and timings

• Do I need to file? If your transaction is an “economic concentration” (merger, consolidation, acquisition, joint venture) and meets the statutory thresholds in the Law on Competition and its implementing decree, notification to the competition authority is mandatory before closing.
• Thresholds. Vietnam uses alternative tests based on total assets, turnover, transaction value and combined market share, meeting any applicable threshold can trigger a filing.
• Timeline. Expect a preliminary appraisal phase followed, where necessary, by an official (in-depth) appraisal phase; practical timing often extends beyond statutory minimums when information requests arise.
• Gun-jumping risk. Closing before clearance, or implementing the deal during the standstill period, exposes the parties to administrative penalties and unwinding risk.
• Before signing. Map thresholds early, build suspensory regulatory conditions into the transaction documents, and prepare the filing package in parallel with due diligence.

How merger control Vietnam works: the legal framework

The foundation of merger control Vietnam is the Law on Competition (Law No. 23/2018/QH14), which took effect on 1 July 2019 and is the principal statute governing anti-competitive conduct and economic concentrations in the country. The full text and any subsequent amendments are available through the official Vietnamese legislation database maintained by the government legal portal. The law establishes when transactions must be notified, what the regulator assesses, and the sanctions that apply where parties fail to comply. It is supplemented by implementing decrees, notably Decree No. 35/2020/ND-CP, which sets out the notification thresholds, and guidance issued through the Ministry of Industry and Trade, which sits at the top of the competition enforcement structure.

Administration and enforcement sit with the national competition authority operating under the Ministry of Industry and Trade. This authority receives notifications, reviews filings, conducts the substantive competitive assessment, and issues appraisal decisions or imposes remedies. Deal teams should treat the authority’s official channels as the primary reference point for current forms, procedural requirements and any updated guidance, because procedural detail can be refined between statutory reviews and the enforcement structure has undergone institutional reorganisation in recent years.

Key legal definitions under merger control Vietnam

Understanding the vocabulary of the Law on Competition is essential to determining whether a filing is required. Several concepts do most of the work:

• Economic concentration. The umbrella term covering the transaction types caught by the regime, mergers, consolidations, acquisitions of an enterprise, the formation of joint ventures, and other forms of concentration prescribed by law.
• Control. The regime is concerned with the acquisition of control or the ability to determine another enterprise’s strategy or management. This concept is broader than a simple majority shareholding; certain minority stakes coupled with governance rights can amount to control.
• Relevant market. The product and geographic market within which competitive effects are assessed. Market definition drives the market-share thresholds and the substantive analysis.
• Group aggregation. The assets, turnover and market shares of affiliated companies within the same group are aggregated when testing thresholds, which is why global and regional figures matter, not just the target’s standalone numbers.

Because these definitions are interpretive, borderline cases, particularly around what constitutes “control” and how the relevant market is drawn, frequently require counsel input rather than a mechanical read of the statute.

The regulator and its decision standards

The competition authority evaluates whether a proposed economic concentration causes or is likely to cause a significant anti-competitive effect in the Vietnamese market. Where the authority concludes that a transaction raises no material concern, it allows the deal to proceed. Where concerns arise, the authority can prohibit the transaction or allow it subject to conditions. The assessment is both quantitative, market shares, concentration levels, and qualitative, considering factors such as barriers to entry, the competitive dynamics of the market, and the transaction’s likely effect on rivals, suppliers and customers.

International comparative work by bodies such as UNCTAD and the OECD reflects a broadly consistent global approach to these assessment factors, which helps cross-border teams anticipate the kinds of questions the Vietnamese authority is likely to raise.

Vietnam merger filing thresholds: when is notification required?

The threshold analysis is the single most important early step in any merger control Vietnam assessment. The Law on Competition and Decree No. 35/2020/ND-CP set alternative tests, and meeting any one applicable test triggers the notification obligation. Deal teams should never assume a transaction is below the radar simply because one metric is modest, the tests are designed to catch concentrations from several angles.

Turnover and asset thresholds

Vietnam’s notification regime is built around a set of quantitative tests measured against the parties’ presence in the Vietnamese market. These typically include:

• Total assets. The aggregate value of assets of the participating enterprises (or their group) on the Vietnamese market.
• Total turnover. The aggregate turnover of the participating enterprises on the Vietnamese market.
• Transaction value. The value of the economic concentration transaction itself.
• Combined market share. The combined share of the participating enterprises in the relevant market.

The precise numeric figures for each test are prescribed in Decree No. 35/2020/ND-CP (with distinct thresholds applying to certain regulated sectors such as credit institutions, insurance and securities) and should be confirmed against the current text on the official legislation portal and the competition authority’s guidance, as figures and the treatment of specific sectors are subject to periodic revision. The critical practical point is that these tests are alternative, not cumulative, a deal that falls below the asset test may still be caught by the transaction-value or market-share test.

Worked example. Consider a foreign strategic buyer acquiring a Vietnamese manufacturer. The target’s Vietnamese turnover alone may sit below the turnover threshold. But once the buyer’s own Vietnamese group turnover is aggregated with the target’s, the combined figure may exceed the threshold, triggering a filing that the buyer would have missed had it looked only at the target. This is precisely why group aggregation must be run early.

Market share and alternative tests

Market share operates both as a standalone threshold trigger and as a central input into the substantive assessment. Where the parties overlap horizontally, competing in the same relevant market, their combined share is directly relevant to whether the transaction raises competition concerns. Because market definition is often contestable, the market-share test frequently requires economic evidence and careful framing. Two plausible market definitions can produce very different combined shares, so counsel and economists typically prepare the market analysis in tandem with the threshold assessment. This is where economic concentration in Vietnam becomes a matter of judgement as much as arithmetic.

Aggregation rules and group turnover

Aggregation is the trap that catches unwary acquirers. Under the regime, the relevant figures are not limited to the immediate parties to the transaction; they extend to the corporate groups to which those parties belong. For a private equity sponsor with a portfolio of Vietnamese investments, or a multinational with existing Vietnamese operations, the group’s aggregate assets, turnover and market shares must be brought into the calculation. The practical implication is that the same target can trigger a filing for one buyer but not another, depending entirely on each buyer’s existing Vietnamese footprint. Sponsors running competitive processes should therefore expect different bidders to face different regulatory positions.

Filing thresholds: Vietnam vs selected ASEAN peers

To put the Vietnamese regime in regional context, the table below compares the broad structure of merger control across three ASEAN jurisdictions. Figures are indicative and structural in nature; deal teams must confirm current numeric thresholds and fees against each regulator’s official materials before relying on them.

The key structural difference for cross-border teams is that Vietnam operates a mandatory suspensory regime, notifiable deals must not close until the authority has completed its appraisal and allowed the transaction to proceed, whereas some neighbouring regimes operate voluntary or hybrid models. That distinction shapes the entire deal timetable.

Merger notification Vietnam timeline: the process step-by-step

Once a filing obligation is confirmed, the notification process runs through a defined sequence of stages. Understanding the merger notification Vietnam timeline early allows deal teams to build a realistic completion calendar and to avoid the temptation to close before clearance.

Pre-notification engagement and filing documents checklist

Although the formal clock starts on submission, well-advised parties often engage with the authority informally beforehand and, more importantly, invest heavily in preparing a complete filing. An incomplete submission does not accelerate review, it delays it, because the authority will issue requests for further information. A typical filing package includes:

• Completed notification dossier in the format prescribed by the competition authority.
• Corporate documents for the participating enterprises, including registration certificates and group structure charts.
• Transaction documents such as the share purchase agreement, merger agreement or joint-venture documentation.
• Financial information evidencing assets and turnover on the Vietnamese market for the relevant period.
• Market data supporting the relevant market definition and the parties’ market shares.
• Translations of foreign-language documents into Vietnamese, together with any required notarisation or legalisation.

Cross-border buyers should budget time for translation and legalisation of foreign corporate and financial documents, which is a common source of avoidable delay.

Filing fees

The regime provides for an appraisal fee payable in connection with the notification. Because fee levels are set by regulation and can be revised, the current amount should be confirmed directly with the competition authority before filing. Fees are modest relative to overall transaction costs, but non-payment or underpayment can hold up acceptance of a filing.

Timeline: statutory phases versus practical reality

The review proceeds in stages. After a filing is accepted as complete, the authority conducts a preliminary appraisal to determine whether the transaction can proceed or requires deeper scrutiny. Where the preliminary phase does not resolve the matter, the transaction proceeds to an official appraisal, an in-depth review of the competitive effects. The statutory framework prescribes maximum periods for each phase, but the practical timeline is often longer because the clock can effectively pause while the authority awaits responses to information requests. Deal teams should therefore plan on two calendars: the optimistic statutory minimum, and a realistic working estimate that accommodates one or more rounds of questions.

For complex, overlapping transactions, the in-depth phase can add materially to the timetable, and this should be reflected in the long-stop date in the transaction documents.

Substantive assessment: what the regulator looks at

Where a transaction proceeds beyond the preliminary phase, the competition authority undertakes a substantive assessment of whether the economic concentration significantly restricts, or is likely to significantly restrict, competition in the relevant market. This is the heart of merger control Vietnam and the point at which economic evidence carries the most weight.

The authority typically examines:

• Market definition and shares. How the relevant product and geographic markets are drawn, and the parties’ combined position within them.
• Horizontal overlaps. The extent to which the parties compete directly, and the loss of competition that the transaction removes.
• Vertical relationships. Supply and distribution links between the parties that could foreclose rivals or raise their costs.
• Potential competition. Whether one party would likely have entered or expanded in the other’s market absent the deal.
• Barriers to entry. Whether new competitors could readily enter to discipline the merged entity.

Evidence and economic analysis expectations

Parties should expect to support their position with data rather than assertion. Robust market-share evidence, credible market definitions, and where relevant, economic modelling of competitive effects, strengthen a filing considerably. Where concerns arise, the authority may accept remedies to allow a deal to proceed. Remedies fall into two broad categories: structural remedies, such as the divestment of a business or assets to preserve competition, and behavioural remedies, such as commitments on pricing, access or supply. Buyers with obvious overlaps should consider potential remedies during structuring, not after the authority raises objections, so that a remedies proposal can be advanced quickly if needed.

Deal structuring to avoid or manage merger control Vietnam obligations

Sophisticated deal teams treat the regime as a structuring input from the outset. There are legitimate ways to structure a transaction that reduce, sequence or manage filing obligations, provided they reflect genuine commercial substance rather than artificial threshold avoidance.

• Threshold mapping. Run the asset, turnover, transaction-value and market-share tests, with full group aggregation, before term sheets are signed, so the filing position is known before the deal is committed.
• Asset deals versus share deals. The scope of what is acquired affects the figures that feed the thresholds; carving specific assets or business lines can change the analysis, though it will not defeat a filing where the substance is a concentration.
• Minority investments. Acquiring a stake that confers influence but not control may fall outside the concept of economic concentration, but governance rights, board seats and veto powers must be assessed carefully, because they can convert a minority stake into control.
• Carve-outs and staged transactions. Overlapping or sensitive assets can sometimes be carved out or addressed separately, subject to anti-avoidance principles.
• Holdco and escrow arrangements. Where closing must await clearance, holding structures and escrow of consideration can bridge the gap between signing and completion.

Short case-style examples

A private equity buyer with an existing Vietnamese portfolio company in the same sector as a target will aggregate the two, potentially pushing a deal over the threshold that would have been clear for a first-time investor. In such a case, the sponsor may consider whether the portfolio holding and the new target sit in genuinely distinct relevant markets, a question of market definition that must be evidenced, not asserted. Separately, a strategic buyer taking a significant minority stake with negotiated veto rights should assume that those rights may constitute control, and should file rather than rely on the minority label.

Preferred deal clauses and conditionality

Because the regime is suspensory for notifiable deals, transaction documents should be drafted to accommodate the clearance timetable. Deal teams typically build in:

• Suspensory conditions precedent requiring completion of the competition appraisal before closing.
• Long-stop dates that realistically accommodate the in-depth appraisal phase.
• Regulatory cooperation covenants obliging the parties to prepare and pursue the filing diligently.
• Allocation of remedies risk, who bears the burden of accepting divestments or behavioural commitments to obtain clearance.
• Clear treatment of regulatory failure as distinct from a material adverse change, so that the consequences of a prohibition are unambiguous.

Preventing gun-jumping and standstill obligations

Gun-jumping in Vietnam refers to implementing a notifiable economic concentration before the competition authority has completed its appraisal, whether by completing the transaction, integrating the businesses, or coordinating competitive behaviour during the standstill period. For any notifiable deal, the parties must observe the suspensory obligation: they remain independent competitors until the authority permits the transaction to proceed.

The consequences of gun-jumping are significant. The regime provides for administrative penalties, and closing without required clearance exposes the parties to enforcement action and the risk that the transaction is unwound or otherwise remedied. Beyond the direct sanction, gun-jumping creates commercial and reputational exposure that can complicate future dealings with the regulator. Enforcement details and penalty provisions should be confirmed against the Law on Competition text and Ministry of Industry and Trade guidance, as sanction levels are set by regulation.

Dos and don’ts before closing

• Do keep the businesses operating independently until clearance is obtained.
• Do establish clean teams and information barriers so that competitively sensitive data is not exchanged prematurely.
• Do limit pre-closing integration planning to what is genuinely preparatory and non-operational.
• Don’t give the buyer influence over the target’s day-to-day commercial decisions before completion.
• Don’t coordinate pricing, customers, output or strategy with the counterparty during the standstill.
• Don’t transfer control of assets or personnel ahead of clearance.

Remedial steps if gun-jumping is alleged

If the authority raises a gun-jumping concern, the parties should respond promptly and transparently: cease any premature integration, document the timeline of what was and was not implemented, and engage with the regulator to demonstrate good faith and to propose corrective measures. Early legal advice is essential, because the way a party responds to an allegation can materially affect the outcome.

Interaction with other approvals: FDI and sectoral regulators

Merger clearance rarely operates in isolation. Vietnam M&A approvals frequently involve parallel consents that must be sequenced alongside the competition filing. Foreign investment in certain sectors is subject to conditions and separate approvals under the Law on Investment and the Law on Enterprises, and specific industries carry their own regulatory gatekeepers.

• Banking and finance. Acquisitions of credit institutions and financial firms typically require approval from the State Bank of Vietnam in addition to any competition clearance.
• Telecommunications. The telecoms sector carries licensing and sectoral approval requirements that interact with foreign-ownership limits.
• Insurance. Changes of control in insurers are subject to insurance-sector consents administered under the Ministry of Finance.

Practical sequencing checklist

Where multiple approvals apply, deal teams should map all required consents at the outset, identify which are conditions to closing, determine the logical order in which they must be obtained, and coordinate the timetables so that no single approval becomes a bottleneck. In some cases, sectoral and foreign-investment approvals run in parallel with the competition filing; in others, one must precede another. Aligning long-stop dates to the slowest approval avoids a situation where the deal is contractually stranded.

Practical timeline and checklist for in-house counsel

The following twelve-step sequence gives deal teams a working framework from pre-signing through to post-clearance integration. It should be adapted to the specifics of each transaction and reviewed with local counsel.

1. Run a preliminary threshold assessment, with full group aggregation, before the letter of intent.
2. Identify all parallel approvals (foreign investment, sectoral) that may apply.
3. Confirm the relevant market definition and gather market-share data early.
4. Build suspensory competition conditions and a realistic long-stop date into the transaction documents.
5. Assign responsibility for the filing between buyer and seller, with cooperation covenants.
6. Establish clean-team and information-barrier protocols to prevent gun-jumping.
7. Prepare and translate the filing package in parallel with due diligence.
8. Confirm the current filing fee and payment logistics with the authority.
9. Submit the notification and manage completeness review promptly.
10. Respond to regulator information requests without delay to keep the timeline on track.
11. If concerns arise, prepare and negotiate remedies proactively.
12. Only close once clearance is obtained; then implement integration in line with any conditions.

For a broader view of appointing and instructing Vietnamese counsel across corporate matters, the Company Lawyer Vietnam checklist is a useful companion resource, and deal teams should consult it alongside this pillar. Readers can also review the wider Vietnam company practice overview and the Vietnam lawyer directory to identify local counsel for a specific transaction.

When to instruct local counsel

Cross-border buyers should engage Vietnamese competition counsel as soon as a transaction with a Vietnamese nexus is contemplated. Local counsel are essential for market definition, threshold interpretation, translation and legalisation of documents, and direct engagement with the authority. International counsel typically coordinate the overall transaction and manage multi-jurisdictional filings, working in tandem with local specialists on the Vietnamese elements.

Appendix: model filing documents and contacts

Deal teams should assemble the following as a baseline filing pack, refined against the authority’s current forms:

• Prescribed notification dossier and cover submission.
• Corporate registration and group structure documentation for all participating enterprises.
• Executed or near-final transaction agreements.
• Financial statements evidencing Vietnamese assets and turnover.
• Market-share and market-definition evidence.
• Vietnamese translations, notarised or legalised where required.

Primary reference points are the competition authority under the Ministry of Industry and Trade for procedural requirements and forms, and the official legislation database for the current text of the Law on Competition and Decree No. 35/2020/ND-CP. Market and investment-climate context is available from international sources including the World Bank, while comparative best practice on merger control and enforcement trends can be drawn from UNCTAD and the OECD.

Conclusion

Merger control Vietnam should be treated as a first-order structuring question, not an afterthought at signing. The regime’s alternative thresholds, group aggregation rules and mandatory suspensory obligation mean that the filing position varies from buyer to buyer and must be assessed early, with full market and group data. Deal teams that map thresholds before the term sheet, build realistic clearance conditions into their documents, guard rigorously against gun-jumping, and coordinate competition clearance with parallel foreign-investment and sectoral approvals will move through the process with far fewer surprises. As 2026 deal activity continues, disciplined preparation and expert local input remain the surest route to a clean, on-time clearance under merger control Vietnam.

Sources

1. Ministry of Industry and Trade (MOIT)
2. Vietnam Legal Portal (VBPL), Legislation Database
3. World Bank, Vietnam Country Overview
4. UNCTAD, Competition and Consumer Protection
5. OECD, Competition Policy