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Service guide
Mergers & Acquisitions in Thailand.
Share deal, asset deal or statutory amalgamation in Thailand: what each involves, the creditor and filing deadlines, tax on a merger, and competition filings.
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Key facts
- Share deal, asset deal or amalgamation?
- A share purchase inherits the company and its history. An asset purchase leaves liabilities behind but has to move contracts and permits. An amalgamation combines the companies on a fixed statutory procedure.
- What does an amalgamation require?
- A special resolution from each company on at least 14 days' notice, a one month creditor objection window, newspaper publication, an amalgamation meeting within 6 months, and registration within 14 days of the resolution.
- How is a merger taxed?
- Each company is deemed dissolved for tax purposes, the merged entity files and pays for each, and assets are valued at market price on the merger date rather than at book value.
- Are competition filings needed?
- Possibly. The Trade Competition Commission has separate notices on merger notification and on merger approval, both from B.E. 2561 (2018). Whether a deal is caught turns on market position and should be tested early.
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Three transactions, often confused with each other
"Merger" in conversation usually means one of three quite different deals in Thailand, and the choice drives cost, timing and risk.
A share purchase buys the company as it stands, including its history. Contracts, licences and employees usually continue undisturbed, which is the attraction, but so do the liabilities nobody found.
An asset purchase buys selected assets and leaves the entity behind. It is cleaner on liability and messier on continuity, because contracts, permits and employment relationships generally have to be moved rather than inherited.
A statutory amalgamation combines the companies themselves. It is the most formal of the three, it requires a special resolution from each company, and it runs on a fixed procedure with creditor protections built in.
Most mid-market deals in Thailand end up as share purchases, but the reason should be a decision rather than a default.
The amalgamation timetable
Procedure for a statutory amalgamation of limited companies under the DBD juristic person duties manual.
| Step | Requirement |
|---|---|
| Approval | A special resolution from each company, on at least 14 days' notice |
| Creditor objection period | Creditors may object within 1 month of receiving notice |
| Publication | Advertise the amalgamation at least once in a widely circulated daily newspaper |
| Amalgamation meeting | Held within 6 months of the last company's special resolution, extendable by resolution of that meeting to not more than 1 year |
| Registration | The board files the registration within 14 days of the resolution |
| Fine for missing the registration | Company up to 20,000 baht; the director who acted or failed to act up to 50,000 baht |
- Approval
- A special resolution from each company, on at least 14 days' notice
- Creditor objection period
- Creditors may object within 1 month of receiving notice
- Publication
- Advertise the amalgamation at least once in a widely circulated daily newspaper
- Amalgamation meeting
- Held within 6 months of the last company's special resolution, extendable by resolution of that meeting to not more than 1 year
- Registration
- The board files the registration within 14 days of the resolution
- Fine for missing the registration
- Company up to 20,000 baht; the director who acted or failed to act up to 50,000 baht
Source: DBD, duties of juristic persons manual
Checked August 2026
Warning: An amalgamation is a taxable event for both companies
For tax purposes, on a merger each company is deemed to be dissolved, and the merged entity takes on the duty and liability of filing and paying tax for each of them. Assets are valued at market price on the date of the merger, though that price is not treated as income or expense in calculating the former company's net profit or loss. Deals modelled on book values get an unwelcome surprise here, which is why tax input belongs at the structuring stage rather than at signing.
Your options
Contact experts who handle mergers & acquisitions in Thailand
A first shortlist from 5 firms on Justenda. Compare them, then message one or several at once.

FRANK Legal & Tax
International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿7,000–12,000 / hour

MSC International Law Office
International Legal and Cross-Border Business Advisory in Thailand and Asia
Due diligence, and what it actually finds in Thailand
The generic diligence list applies here as anywhere. What is specific to Thailand is where the problems cluster.
Ownership structure is the first. A target with foreign involvement may have been structured around the Foreign Business Act in a way that does not survive examination, and nominee arrangements are a criminal exposure rather than a documentation defect. This is the single most common deal-breaker in foreign-buyer transactions, and the guide to nominee shareholders explains why it cannot be papered over afterwards.
Corporate records are the second. Gaps in the filing history, minutes that were never written, shareholder lists never filed, and accounts approved outside the four month window all surface during diligence, and clearing them takes longer than buyers expect. That is ordinary corporate compliance work, but it becomes urgent in a transaction.
Licences are the third. A foreign business licence in Thailand attaches to described activities, and a business that has drifted beyond them has a problem the buyer inherits on a share deal.
Property and employment fill out the list, and each has its own specialists.
Competition filings
Competition in Thailand is governed by the Trade Competition Act B.E. 2560 (2017). The Trade Competition Commission has issued a notice on the rules, procedures and conditions for notification of a merger transaction, and a separate notice on merger approval, both made in B.E. 2561 (2018).
The practical point for a deal team is that the notification and approval regimes are distinct: some transactions require approval before completion, others require notification afterwards, and whether a specific deal falls into either is a question of the parties' market position rather than of deal size alone. It is a question to put early, because an approval requirement discovered late changes the completion timetable rather than merely adding a filing.
For the wider practice, corporate lawyers in Thailand handle transactions alongside the structuring that precedes them and, where a deal reshapes a group, the dissolution and liquidation that follows it.
How a transaction usually runs
Choose the structure
Share purchase, asset purchase or amalgamation. This is a decision about liability, continuity and tax, and it should be made before heads of terms rather than assumed.
Diligence, starting with ownership
Foreign Business Act position, nominee exposure, corporate records, licences, property and employment. Ownership structure is where foreign-buyer deals most often fail.
Test the competition position early
Whether the transaction requires prior approval or post-completion notification under the Trade Competition Commission's notices. Late discovery moves completion.
Model the tax properly
On an amalgamation each company is deemed dissolved and assets are valued at market price on the merger date. Book-value models mislead.
Run the statutory procedure
Special resolutions on at least 14 days' notice, the one month creditor objection window, newspaper publication, the amalgamation meeting within 6 months, and registration within 14 days of the resolution.
Deal with the post-completion tidy-up
Registrations, licences, employment records and the compliance calendar of the surviving entity.
What this costs
Transaction work is hourly almost everywhere, and Thailand is no exception, because the length depends on the counterparty and on what diligence uncovers rather than on the firm. Fixed fees appear for defined pieces, such as a diligence report on a small target or the statutory amalgamation filings, and those are worth asking for separately.
The official costs are minor by comparison. Amendment registrations at the Department of Business Development are 500 baht each, certificates 100 baht per copy and certified copies 50 baht per page, and corporate income tax runs at 20 percent of net profit.
No credible published source gives professional fee ranges for Thai M&A, so compare written scopes rather than headline numbers, and be specific about what happens if diligence extends.
This page is general information, not legal advice. Structure, competition filings and tax all depend on the specific transaction, so speak with a qualified professional.
Also listed
More firms that handle mergers & acquisitions
Every one of these is verified on Justenda and can take on mergers & acquisitions work in Thailand.
YOUR ONE-STOP COORDINATOR FOR INTEGRATED LEGAL, TAX AND BUSINESS SOLUTIONS

FRANK Legal & Tax
International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿7,000–12,000 / hour

MSC International Law Office
International Legal and Cross-Border Business Advisory in Thailand and Asia
Next step
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Common questions
Frequently asked questions
- What is the difference between a share deal and an asset deal in Thailand?
- A share purchase acquires the company itself, so contracts, licences and employment relationships generally continue undisturbed, but the buyer also inherits the company's history and any liabilities that diligence did not find. An asset purchase acquires selected assets and leaves the entity behind, which is cleaner on liability but means contracts, permits and employees usually have to be transferred rather than inherited. Most mid-market Thai deals are share purchases, but that should be a decision made on liability, continuity and tax rather than a default.
- How does a company amalgamation work in Thailand?
- Each company passes a special resolution to amalgamate, which requires at least fourteen days' notice of the meeting. Creditors are notified and may object within one month of receiving notice, and the amalgamation is advertised at least once in a widely circulated daily newspaper. Once the month passes without objection, the companies call an amalgamation meeting, which must be completed within six months of the last special resolution, extendable by resolution of that meeting to not more than one year. The board then files the registration within fourteen days of the resolution, with fines of up to 20,000 baht on the company and up to 50,000 baht on the director for missing it.
- Do I need competition approval for an acquisition in Thailand?
- It depends on the parties' market position rather than on deal size alone. Competition is governed by the Trade Competition Act B.E. 2560 (2017), and the Trade Competition Commission has issued a notice on the rules, procedures and conditions for notification of a merger transaction and a separate notice on merger approval, both made in B.E. 2561 (2018). The two regimes are distinct: some transactions require approval before completion while others require notification afterwards. Because an approval requirement discovered late moves the completion date rather than simply adding a filing, this is a question to test at the outset.
- What does due diligence usually find in a Thai target?
- The problems cluster in predictable places. Ownership structure is the most serious: a target with foreign involvement may have been structured around the Foreign Business Act in a way that does not survive scrutiny, and nominee arrangements are a criminal exposure rather than a documentation defect. Corporate records are the most common: missing minutes, unfiled shareholder lists, and accounts approved outside the four month window. Licences are the most easily overlooked, because a licence attaches to described activities and a business that has drifted beyond them passes that problem to a share buyer.
- What tax applies to a merger in Thailand?
- For tax purposes each company involved in a merger is deemed to be dissolved, and the newly merged entity takes on the duty and liability of filing a return and paying tax for each of them. Assets are valued by applying the market price on the date of the merger, although that price is not treated as income or expense in calculating the former company's net profit or loss. Deals modelled on book values can therefore produce an unexpected result, which is why tax input belongs at the structuring stage rather than at signing.
All firms
Every firm that can help you with mergers & acquisitions
YOUR ONE-STOP COORDINATOR FOR INTEGRATED LEGAL, TAX AND BUSINESS SOLUTIONS

FRANK Legal & Tax
International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿7,000–12,000 / hour

MSC International Law Office
International Legal and Cross-Border Business Advisory in Thailand and Asia


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Practical explainers on this topic: general information, not professional advice.
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