Tax Planning
What Japan’s Tax Reform Means for High Earners: New Rates, Lower Thresholds, Global Updates
Japan’s 2026 fiscal tax reform tightens the top income bracket, raises rates to 30% for certain high earners, and strengthens global tax rules—here’s what individuals and corporations need to know.
By NomadicTax Research Team • 5-8 min read • September 5, 2026
## Overview of Major Changes for High-Income Individuals and Multinationals
In the 2026 tax reform package, Japan introduced **substantial modifications** to taxation on very high incomes and international operations. These changes, passed by the Diet and implemented beginning **FY 2026 and FY 2027**, impact both resident individuals with large incomes and corporations operating across borders.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai))
### Top Rate and Threshold Adjustments for Individuals
- The threshold for the top “special tax burden” (特定の基準所得金額の課税の特例) has been reduced from **¥330 million** to **¥165 million**.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_01.htm?utm_source=openai))
- The tax rate for incomes above that threshold rises from **22.5%** to **30%**.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_01.htm?utm_source=openai))
### Changes in Other Individual Tax Provisions
- **Blue Return Special Deduction (青色申告特別控除)**: Taxpayers who file using e-Tax, including submission of financial statements like balance sheets and profit/loss statements, can claim a **¥650,000 deduction**. Other taxpayers receive less.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_01.htm?utm_source=openai))
- Expansion of **child custody deductions**, increase in **one-parent deduction** amounts, and adjustments to **basic exemptions** and **salary income deductions** following inflation.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai))
## International Tax and Corporate Reforms
- Expanded enforcement of **Global Minimum Tax**: For companies with overseas deferred tax assets or liabilities, Japan clarifies how to adjust under the international minimum tax rules.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
- Revisions to the **Foreign Subsidiary Aggregation Rules (Foreign-Related Entities Tax Regime)** including stricter “substance over form” tests, such as higher asset thresholds for “paper company” classifications.([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_05.htm?utm_source=openai))
## Effective Dates and Practical Strategy Tips
| Change | Effective From | Who Must Act |
|---|---|---|
| Top rate increase / threshold ↓ | FY 2026 income (filing in 2027) | High-income residents must model with new bracket |
| Blue Return Deduction via e-Tax | FY 2026 | Small business / self-employed beans move to e-filing and maintain required documents |
| Global minimum tax and foreign subsidiary reforms | Corporations with accounting periods starting after April 1, 2026 | Multinational corporations should re-assess structure, deferred tax assets liabilities, and ensure compliance |
## Example Scenarios
- **Individual example**: A resident individual with taxable income of ¥200 million will now hit the new special top rate of 30% for income exceeding ¥165 million. The extra result: higher tax payable, so prepayments or filings need adjustment.
- **Corporate example**: A corporation with affiliates abroad must revisit deferred tax assets/liabilities. If certain foreign tax credits or adjustments were handled under earlier thresholds, you’ll need to recompute under new global minimum tax rules.
## Actionable Advice
- **High-income individuals** should consult with tax advisors to forecast liability under new rates and consider income shifting or investment timing before year-end.
- **Elect e-Tax early** to benefit from higher deductions and ensure documentation is ready.
- **Corporations** must revisit international subsidiaries, update transfer pricing documentation, and ensure structures comply with new foreign entity aggregation tests.
This reform underscores Japan’s shift to enhance tax fairness for very high-income earners and tightens transparency around international tax avoidance. Staying informed is key.