Tax Planning
How Japan’s 2026 Tax Reform Impacts High-Income Individuals
Key changes in Japan’s 2026 tax reform affect high-earners with revised thresholds, progressive rates, and surtaxes—understanding these is essential for optimal planning.
By NomadicTax Research Team • 5-8 min read • August 16, 2026
## What’s New for High-Income Individuals in the 2026 Reform
Japan’s **令和8年度税制改正の大綱 (Fiscal Year 2026 Tax Reform Outline)** introduces several major changes for very high-income taxpayers: thresholds for additional tax burdens have been lowered, tax rates raised, and special surtaxes introduced. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai))
### Significant Changes
| Measure | Before | After |
|---|---|---|
| Basis income threshold for additional tax burden’s special deduction | ¥330,000,000 | **¥165,000,000** ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) |
| Tax rate above threshold | **22.5%** | **30%** ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) |
| Introduction of “防衛特別所得税” (Special Income Tax for Defense) | None | **1% surtax on base income tax** ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) |
### Practical Implications & Example
- If your **基準所得金額** (base income) exceeds ¥165 million and your tax burden was calibrated at 22.5%, you’ll now face a 30% rate.
- The **defense surtax** adds another layer: an extra 1% on income tax for many taxpayers starting FY2026. This is permanent “for the time being.” ([fsa.go.jp](https://www.fsa.go.jp/internationalfinancialcenter/faq-contact-us?utm_source=openai))
- For example, someone earning ¥200 million would see significant increases: earlier, excess beyond ¥330 million taxed at higher rate; now, the excess beyond ¥165 million is taxed at 30%, plus the new surtax.
## What to Do: Tax Planning Strategies
- **Timing income recognition:** Bringing forward income into years before FY2026 might help if your income was expected to cross the new threshold.
- **Maximize deductions and credits:** Especially among incomes close to ¥165 million, making full use of available deductions or credits can reduce your taxable base below the threshold.
- **Restructure compensation:** If feasible, shift compensation into longer-term capital gains or dividends, though be mindful of Japan’s separate taxation of those and treaty rules.
- **Use of income splitting or entity planning:** Under Japanese law, where possible, with legal entities or trusts; but high-earners must beware anti-abuse rules.
## Related Changes and Fairness Measures
- The **献金税額控除や研究開発税制の強化**, including key expansions in R&D credit for strategic technologies like AI, quantum or biotechnology. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai))
- **Base exemptions and standard deductions** are being increased in light of inflation, benefiting lower/middle incomes. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai))
## Actions You Should Take Now
1. **Estimate your taxable income for FY2026** to see whether you cross new thresholds.
2. Consult with a tax advisor to identify deductions or credits you may not be utilizing.
3. If you receive large income at one time (e.g. bonuses, capital gains), consider deferring or spreading them when possible.
4. Review your compensation mix—salary vs dividends vs deferred compensation—to see which is most tax-efficient under the new regime.
By understanding and proactively planning for these reforms, high-income individuals can mitigate their increased tax burden. The key is acting before changes take full effect.