Legal Due Diligence in Vietnam M&A Transactions

What is legal due diligence for?

Legal due diligence answers three buyer questions. First, does the seller actually own what it offers for sale — are the shares subject to transfer restrictions, are assets mortgaged, is the land use right origin clear. Second, what obligations is the business “carrying” — bank debts, guarantees, pending disputes, hidden tax liabilities, compliance violations subject to sanctions. Third, can the buyer operate smoothly after purchase — do licenses remain valid upon change of ownership, do material contracts allow counterparties to terminate on change of ownership, are key personnel bound to stay.

Due diligence results serve more than the “buy or not” decision — they directly shape the sale contract (SPA): which findings become conditions precedent (the seller must remedy before closing), which become representations, warranties, and indemnities, and which adjust the price.

Due diligence scope: eight core areas

1. Legal personality and ownership structure

Review the enterprise registration certificate, charter, shareholder/member register, and past resolutions on capital increases and capital transfers. Points to verify: whether charter capital was fully and timely contributed (fictitious capital declaration is strictly prohibited under the amended Law on Enterprises 2025), whether the shares to be purchased are frozen, mortgaged, or subject to transfer restrictions, and whether beneficial owner information has been fully declared.

2. Land and real estate

This is often the largest risk group in Vietnamese transactions. Check: land use right origin (allocated land, one-time or annual land lease), whether the land use purpose matches actual operations, remaining land term, whether land financial obligations are fulfilled, whether the land is mortgaged to a bank, and whether there are boundary disputes or related complaints. For foreign-invested enterprises, cross-check land use conditions under land law.

3. Labor

Review internal labor regulations, collective labor agreements, key personnel labor contracts, social insurance contribution status, and existing labor disputes. Severance and job-loss allowances for long-serving employees can create significant financial obligations the buyer will inherit.

4. Licenses and sector compliance

List all sub-licenses the business operates under; check validity and maintenance conditions. Pay special attention to licenses tied to ownership structure or key personnel conditions — a change of ownership may trigger re-application or notification obligations.

5. Material contracts

Review high-value or existential contracts: credit and bank guarantee contracts, long-term land/factory leases, exclusive distribution/agency contracts, EPC/construction contracts. The key point is the change of control clause — many contracts allow counterparties to terminate or demand immediate payment when the business changes hands. Missing this clause can cost the buyer its most important contract right after closing.

6. Disputes and litigation

Search lawsuits and arbitrations involving the company, unexecuted administrative sanction decisions, and pending complaints and denunciations. Beyond publicized cases, interview management about “simmering” disputes not yet filed.

7. Tax

Tax due diligence is usually run as a separate stream: review audited and unaudited periods, tax incentives enjoyed and maintenance conditions, related-party transactions and transfer pricing documentation, and withholding obligations for foreign contractor tax. For details see tax due diligence in M&A transactions.

8. Other compliance: environment, fire safety, IP

Depending on the sector: environmental impact assessment and environmental permits, fire safety acceptance, trademark/patent registrations, and IP disputes. For manufacturers, environmental obligations can be a slow-burning cost bomb.

Typical red flags in practice

• “Paper” charter capital: large charter capital but financial statements show disproportionate cash and assets — a sign of fictitious capital declaration, subject to sanctions and affecting member/shareholder standing.
• Unclean land: land use purpose recorded as agricultural land but factories built on it; or land rent only partly paid — the remaining financial obligations can be huge.
• Change of control clause in loan contracts: the bank may demand early repayment when the business changes hands — the buyer may suddenly need to arrange new funding right after closing.
• Expiring tax incentives: the company enjoys CIT incentives but no longer meets the conditions (e.g., incentive period ended or location changed) — the buyer’s projected cash flow is directly affected.
• Simmering collective labor disputes: not yet filed but complaints about social insurance and allowances already lodged — may erupt on news of a change of ownership.
• Related-party transactions without documentation: regular transactions with the foreign parent but no transfer pricing documentation — risk of tax reassessment and penalties.

From due diligence report to deal decision

A good legal due diligence report is not a long list of every document reviewed, but a document that helps the buyer decide. An effective structure comprises: an executive summary with material findings and risk levels; detailed analysis by area; and most importantly — recommended handling for each finding: remedy before closing (as a condition precedent), convert into SPA representations, warranties, and indemnities, adjust the purchase price, or accept the risk.

Buyers also need to quantify risk: each finding should be estimated in numbers (how much hidden tax liability, how much environmental remediation cost, what probability) for pricing models and negotiation. A finding that cannot be quantified is not yet a complete finding.

Finally, distinguish a deal-breaker (an issue serious enough to stop the deal — e.g., the core asset’s land use right is unlawful) from issues manageable by contract. The diligence lawyer must state clearly where that line is, rather than leaving the buyer to guess.

How does FLAT LAW FIRM conduct legal due diligence?

FLAT LAW FIRM conducts legal due diligence with a risk-based approach: concentrating resources on areas most likely to create large financial obligations (land, tax, material contracts, compliance) rather than spreading evenly. Our reports always include specific handling recommendations for each finding and quantified estimates to serve SPA negotiation. See our corporate legal due diligence services and M&A services in Vietnam.

Frequently asked questions

Useful links

You should speak with a lawyer if:

• Preparing to acquire a business and need a legal due diligence plan.
• You have received a due diligence report but are unclear how to convert findings into SPA provisions.
• The target has land, sub-licenses, or a complex ownership structure.
• The seller restricts document access and you need alternative protection.
• You need to quantify legal risks to renegotiate the purchase price.