Entity Setup
Entity Setup and the Foreign Subsidiary Tax Rules After FY2026 Reforms
Japan’s foreign subsidiary consolidation rules (CFC), paper company tests, and tax burden tests have been tightened under the latest reforms—prepare your entity structure accordingly.
By NomadicTax Research Team • 5-8 min read • August 28, 2026
## What Are the Foreign Subsidiary Tax Rules in Japan?
These rules govern taxation of **外国子会社合算税制 (Foreign Subsidiary Consolidated Tax / Controlled Foreign Corporation – CFC) rules**, plus **ペーパー・カンパニー特例 (Paper Company Sub-rules)** and **租税負担割合 (Effective Tax Rate Tests)**. Among entities with non-resident subsidiaries, these directly impact taxation of overseas profits attributable to Japanese resident corporate owners.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
## Key Reforms in 2026
1. **Removal of the “asset ratio test”** for paper companies when total assets reported on the balance sheet are zero at end of fiscal year. Entities won’t need this requirement in such cases.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
2. Tightening of the **effective tax rate (tax burden ratio)** test: if the highest corporate tax rate of the foreign jurisdiction is unlikely to apply, or applied only to negligible income, the special allowance could be denied.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
3. Similar revisions to **foreign subsidiary income taxation** held by special related shareholders of domestic corporations.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
All these changes apply for **business years starting on or after April 1, 令和8 (2026)**.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
## Practical Examples
- A domestic company owns a foreign subsidiary incorporated in a jurisdiction where the top nominal tax rate is 30%, but actual tax paid even for high income is only 15%. Under the revised rules, the subsidiary may no longer benefit from reduced effective tax test unless high tax rate is realistically applied. Tightening here might pull back benefits previously assumed.
- If a shell subsidiary has **no assets** (i.e., balance sheet total = zero) at fiscal year end, it can now bypass previously burdensome asset-ratio checks if all other criteria are met. Helps reduce compliance burden for inactive entities. Example: an overseas holding entity without assets can avoid asset-ratio test reporting.
## Critical Steps When Setting Up an Entity Structure
- Before forming a foreign subsidiary, evaluate where **actual tax burden** will be realized—not just in name.
- Document your jurisdiction’s corporate tax regime and ensure real business substance to satisfy effective tax rate tests.
- Monitor your fiscal year start dates: if starting post April 1, 2026, new rules apply. For earlier fiscal years, old rules may still govern.
## Strategic Considerations
- Consider structuring entities in jurisdictions with stable, high applied corporate tax rates if intending to use Japanese CFC reliefs.
- If your structure is borderline paper-company with minimal assets or transactions, evaluate whether it’s worth closing or merging.
- Engage in localized substance: employees, operations, contracts—all help legitimise effective tax rate tests.
Category: **Entity Setup** • Relevant to multinationals, holding structures, foreign subsidiaries • Effective for fiscal years from April 1, 2026 onwards.