Dear Clients and Partners,
The landscape of doing business in Vietnam has fundamentally shifted as we cross into 2026. If your business is still operating under the "pre-approval" mindset of the early 2020s, you are likely exposed to significant regulatory and financial risks.
With the full implementation of the Law on Investment 2025 (effective March 1, 2026) and the July 2026 Tax Administration Law, the Vietnamese government has transitioned from a "gatekeeping" model to a "monitoring" model. In this new era, market entry is faster, but post-licensing audits are more frequent and far more rigorous.
At BLaw Vietnam, we have seen many investors fall into avoidable traps during the due diligence process. To help you navigate this transition, we have identified the seven most common mistakes businesses are making in 2026 and: more importantly: how to fix them to ensure your operations remain "clockwork" efficient.
1. Ignoring the "IRC and ERC" Database Integration
One of the most critical changes in 2026 is the full synchronization of the Investment Registration Certificate (IRC) and Enterprise Registration Certificate (ERC) databases under Decree 96/2026. Historically, many companies allowed minor discrepancies between their investment goals (IRC) and their actual corporate structure (ERC) to persist for years.
The Mistake: Failing to verify that the target company’s actual charter capital, business lines, and shareholder structure match both the IRC and ERC simultaneously. Any mismatch now acts as an automatic red flag for the Department of Planning and Investment (DPI).
The Fix: Conduct a "Data Reconciliation Audit." Before any M&A or expansion, ensure that your internal records are perfectly aligned with the National Business Registration Portal. If you are acquiring a target, make the regularization of these certificates a non-negotiable condition for closing.
Learn more about our M&A and Licensing services to ensure your corporate structure is flawless.
2. Static Tax Settlements in the Age of Global Minimum Tax
As of July 1, 2026, Vietnam has fully integrated its tax system with international "Big Data" tools. The shift to a self-declaration model means that the burden of proof has shifted entirely to the taxpayer.
The Mistake: Relying on traditional tax settlements that don't account for the Global Minimum Tax (GMT) or the new Digital Business Tax. Many companies are still using manual ledgers that do not reconcile with the General Department of Taxation’s (GDT) automated API updates.
The Fix: Transition to a centralized data management system for GloBE reporting. Your due diligence must now include a 5-year audit of tax assessment decisions and a reconciliation of e-invoices against bank movements.
Explore our Tax Settlement services to optimize your tax strategy for the 2026 framework.
3. Overlooking the "Comply or Explain" Corporate Governance Rule
Vietnam’s corporate governance has entered a new phase of transparency. The "Comply or Explain" rule now mandates that businesses either adhere to specific governance standards or provide a public explanation for their deviation.
The Mistake: Treating corporate governance as a "paper-only" exercise. Many boards still lack formal internal audit mechanisms or fail to log board resolutions through the centralized national digital portal as required by the 2026 Law.
The Fix: Implement a "Clockwork" governance system. This includes mandatory reporting on Ultimate Beneficial Ownership (UBO) and ensuring that your Legal Representative is fully aware of their increased personal liability under the new regulations.
Discover how to master your corporate governance and stay ahead of disclosure rules.
4. Underestimating 2026 Labor Law & The Regional Wage Hike
Employment law in Vietnam has become significantly more complex with the 2026 Regional Minimum Wage Hike and the new mandates for digital employment contracts.
The Mistake: Failing to audit the target company’s social insurance contributions and overtime records. In 2026, the Ministry of Labor’s automated tracking system makes it nearly impossible to hide under-payments, which can lead to massive retroactive liabilities during an acquisition.
The Fix: Perform a comprehensive HR due diligence check that includes a review of the Ministry of Labor’s dispute registry. Ensure all employment contracts are transitioned to the digital format required by Decree 219.
Review our Labor and Employment Law services for the latest compliance standards.
5. Ignoring the 5:1 Debt-to-Equity Cap for Private Bonds
For businesses involved in corporate finance or private bond issuances, the 2026 landscape has introduced strict caps to prevent "thin capitalization."
The Mistake: Assuming your current debt structure is grandfathered in. The new 5:1 Debt-to-Equity cap for private bond issuance has changed how businesses must leverage their capital. Failing to recognize this can lead to immediate loan defaults or the inability to raise new capital.
The Fix: Conduct a financial structure review. Ensure your debt-to-equity ratios are within the legal thresholds and that all inter-company loans are documented with transparent, market-rate interest to avoid transfer pricing penalties.
6. Missing the ESG (Environmental, Social, and Governance) Blind Spots
In 2026, ESG is no longer a "buzzword": it is a regulatory requirement tied to specific investment incentives and "claw-back" provisions.
The Mistake: Skipping environmental due diligence for non-manufacturing targets. Under the Law on Environmental Protection 2020 (as enforced in 2026), environmental liability remains with the company regardless of ownership changes. Even service-based companies can be penalized for improper waste management or lack of digital environmental reporting.
The Fix: Include a dedicated ESG workstream in your due diligence. Verify all Environmental Impact Assessment (EIA) approvals and check for any outstanding violation notices from the Department of Natural Resources and Environment (DONRE).
7. Weak Ultimate Beneficial Owner (UBO) Disclosures
Transparency is the cornerstone of the 2026 Investment Law. The government is now actively targeting "sham" transactions and nominee structures designed to bypass foreign ownership limits.
The Mistake: Failing to map out the entire ownership chain up to the individual level. Incomplete UBO disclosures can lead to the termination of business licenses and significant reputational damage.
The Fix: Use a professional shareholder mapping service. Ensure that your disclosures are accurate and updated on the National Business Registration Portal to avoid being flagged for "lack of transparency."
The BLaw "Clockwork" Advantage: Why Choose Us?
Due diligence in 2026 requires more than just a checklist; it requires a deep understanding of the technological integration of Vietnam's legal system. At BLaw Vietnam, we don't just identify risks: we provide actionable, "clockwork" solutions to fix them before they impact your bottom line.
Our team of highly qualified attorneys specializes in:
- M&A Support: Navigating the complex 6-12 month approval cycles for sensitive sectors.
- Tax Optimization: Ensuring your business is GMT-ready and audit-proof.
- Corporate Governance: Building internal controls that protect your board and legal representatives.
Conclusion
The 2026 legal framework in Vietnam offers immense opportunities for businesses that are prepared. By avoiding these seven common due diligence mistakes, you can ensure your business remains compliant, efficient, and profitable in this new regulatory era.
Are you ready to optimize your Vietnam operations?
Through the above article, we hope you have gained valuable insights into the 2026 due diligence landscape. If you are planning an M&A transaction or simply need to audit your current compliance status, our team is here to help.
Contact BLaw Vietnam today for a consultation and let us help you turn your legal compliance into a competitive advantage.
Best regards,
Long (Realtor)
Managing Partner, BLaw Vietnam