Japanese Firms Expanding in Vietnam: 5 Legal-Tax Traps
Summary: Adjusted capital for existing FDI projects in Vietnam rose 95% in the first seven months of 2026 - a clear sign that Japanese companies already on the ground are scaling up. But scaling up has never been purely a capital question: it is a question of legal structure, tax, labor and restructuring. This article sets out the 5 blind spots Japanese companies commonly encounter when expanding in Vietnam, and a controlled approach to managing them.
1. The Big Picture: Japanese Companies Are Doubling Down on Vietnam
Data for the first seven months of 2026 from the Ministry of Planning and Investment shows something that rarely happens: adjusted capital nearly doubled year on year, rising 95.3% to USD 9.99 billion across 920 adjustment transactions. For Japanese companies - known for their caution in investment decision-making - this figure is not simply a warming market but a long-term commitment.
Three Reasons Behind the Trend
First, rapidly rising labor costs in China and continuing US-China geopolitical tension keep Vietnam firmly in place as a preferred China + 1 destination. Second, Vietnam's infrastructure and administrative reforms - the North-South Expressway, Long Thanh Airport, and the digitalization of tax and customs procedures - have significantly reduced operational friction. Third, the prolonged weakness of the yen makes overseas investment relatively more expensive in JPY terms; as a result, companies are protecting and expanding what they have already invested rather than pulling back.
For the CEOs and CFOs of Japanese subsidiaries in Vietnam, this is the moment to shift from stable operations to controlled scale up.
2. Five Legal and Tax Blind Spots When Expanding
Nexora's advisory experience shows that when Japanese companies decide to increase capital or expand their operations in Vietnam, they typically run into the following five issues.
2.1. Investment Certificate (IRC/ERC) Amendments Not Aligned With Actual Changes
Increasing capital, adding business lines, changing location - every change requires the license to be updated. Companies often act only when an inspection raises the question, which leads to administrative penalties or the loss of investment incentives.
2.2. Tax Incentives Not Optimized When Expanding a Project
An expansion project may qualify for corporate income tax incentives on the same basis as a new project if it meets the conditions under Decree 218. Many Japanese companies miss out because they cannot separate the revenue, costs and assets attributable to the expanded portion.
2.3. Transfer Pricing Becomes More Complex as Intercompany Transactions Grow
When capital is increased to import additional machinery from the parent company or to purchase materials from the Japanese group, related-party transactions surge, bringing with them the risk of a transfer pricing audit. Transfer pricing documentation (Local File, Master File) must be updated - last year's version cannot simply be reused.
2.4. Japanese Staff Residing in Vietnam: Visas, Work Permits and Resident PIT
Once a Japanese expatriate spends more than 183 days in Vietnam, their personal income tax obligations change entirely and extend to worldwide income. Many companies declare only the salary paid in Vietnam and overlook the home salary paid in Japan, creating exposure to back-tax assessments.
2.5. Intercompany Agreements That Are Missing or Out of Date
Management fees, brand fees and cost sharing charged from Japan to Vietnam require contracts and benchmarking documentation. Without them, the tax authority may disallow the entire expense.
3. The Approach Nexora Recommends
Before launching a scale-up project (a capital increase of 30% or more, adding a new product line, or opening a second factory), Japanese companies should run a three-step process.
Step 1 - Legal & Tax Health Check (2 weeks)
Review all licenses, tax filings and labor records for the last three years. This is the map of where you actually stand.
Step 2 - Scale-up Blueprint (3 weeks)
Design the legal and tax structure for the expansion phase, including whether to increase capital or set up a new project, where the highest incentives apply, and how to structure intercompany transactions.
Step 3 - Implementation & Compliance Kit (in parallel with operations)
Update licenses, update transfer pricing documentation, update labor contracts, and put intercompany agreements in order.
The key point: do not wait until the expansion is underway to deal with this - if the existing records have flaws, expanding only amplifies the risk.
4. Conclusion
The 95% rise in adjusted capital is good news for Vietnam and for the Japanese business community already established here. But expanding safely requires re-examining the legal and tax foundations before building another floor on top.
Contact Nexora Consulting
If your company is preparing to increase capital or expand its operations in Vietnam in the next 6-12 months, the Nexora Consulting team is ready to work with you from the health check stage through to implementation.
Contact: info@nexorawoco.com - 0985 677 501 (Zalo) - LINE: m2H6M8wpfJ - consulting.nexorawoco.com