THE 2026 GLOBAL TAX WAVE – STRATEGIC VISION ADAPTATION FOR FDI ENTERPRISES

Starting January 1, 2026, Global Minimum Tax rules and anti-transfer pricing mechanisms will transition from forecasts to mandatory enforcement. What must FDI enterprises in Vietnam do to protect their interests in this new tax era?

Global Minimum Tax (Pillar 2): When Tax Incentives Are No Longer a “Golden Ticket”

The year 2026 marks the stable implementation phase of the Qualified Domestic Minimum Top-up Tax (QDMTT) in Vietnam.

• The Impact: Many FDI enterprises previously enjoying preferential tax rates of 5% or 10% will now face “top-up” payments to meet the Effective Tax Rate (ETR) of 15%.
• Strategic Note: FDI entities in Vietnam must closely coordinate with their Parent Groups to determine the ETR according to OECD standards. Any calculation discrepancies could lead to significant risks of back-taxes and late payment penalties in both Vietnam and the ultimate parent jurisdiction.

Stringent Management of Transfer Pricing (BEPS Action 13)

Tax authorities are aggressively shifting toward verifying the global consistency of Transfer Pricing documentation.

• Three-Tiered Documentation: The Local File, Master File, and Country-by-Country Report (CbCR) must accurately reflect the value creation and economic substance of the Vietnamese entity.
• Interest Expense Cap: The 30% EBITDA cap on interest expenses (under Decree 132) remains a “hotspot” for tax audits. Businesses need to restructure their capital funding to optimize deductible expenses.

Risk Management of Intra-group Fees

Payments for Royalties, Management fees, and Technical service fees will be scrutinized regarding their “actual occurrence” and “economic benefit provided to the Vietnamese entity.” Without robust supporting evidence, these expenses are highly susceptible to being disqualified for Corporate Income Tax (CIT) purposes.

It is evident that the global tax landscape from 2026 onwards will leave no “gaps” for aggressive tax optimization strategies. The enforcement of the Global Minimum Tax (Pillar 2) and the tightening of Three-Tiered Transfer Pricing Documentation demonstrate Vietnam’s strong commitment to transparentizing the investment environment in line with OECD standards. For FDI enterprises, the primary challenge now lies in re-evaluating their entire cost structure and economic benefits to adapt to the new Effective Tax Rate.

However, understanding the international “rules of the game” is only a necessary condition. To operate safely and optimally, businesses must also confront complex execution challenges within the local Vietnamese market:

• How can ERP systems handle the discrepancies between IFRS reporting standards and Vietnamese Tax regulations?
• How will Tax Authorities utilize AI and Big Data to detect invoice errors in an instant?
• What are the common risk scenarios in Foreign Contractor Tax (FCT) audits and VAT refunds in this new era?

All questions regarding operations, technology, and internal control processes will be addressed in detail in our next article.

Quyen Nguyen