Tax Planning

Maximizing Post-Inflation Relief: Japan’s New Income Tax Rewrite

With recent policy changes raising the basic exemption and employment income deduction, low- and middle-income earners in Japan face new opportunities for tax relief.

By NomadicTax Research Team • 5-8 min read • August 12, 2026

## What’s Changed - The FY2026 tax reform introduces **automatic biennial adjustments** to the basic exemption and the minimal guaranteed employment income deduction, tied to changes in the Consumer Price Index (CPI). ([mof.go.jp](https://www.mof.go.jp/english/policy/tax_policy/tax_reform/08keyhighlight.pdf?utm_source=openai)) - For income tax and local inhabitant taxes, in the meantime, the basic exemption is increased by **¥40,000** for individuals whose total income is ¥23,500,000 or less. The minimum guaranteed employment income deduction rises from **¥650,000** to **¥690,000**. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) - For those with low aggregate income (e.g. under ¥4,890,000), a special addition to the exemption has been introduced for FY2026–FY2027, tapering off in future years. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) ## Who Benefits Most? These changes favor: - **Low- to middle-income salaried workers** adjusting for rising inflation. - Households with **dependency burdens** or single earners who fall just above earlier exemption thresholds. - **Individuals with fluctuating incomes** who may now remain below taxable thresholds thanks to the threshold increases. ## Practical Tips to Optimize Relief - Review your **withholding tax** status: increasing exemptions may reduce what’s taken monthly from your paycheck. Ask the payroll department to reflect new thresholds. - If you have multiple income streams (e.g., side jobs, investments), plan timing and amounts to stay just under thresholds where the higher exemptions apply. - Monitor CPI trends—because exemptions adjust every 2 years tied to CPI, inflation booms may yield another round of relief. Consider timing expenses or income realization accordingly. ## Example Scenario Taro earns ¥5,000,000 annually from employment. Before reform, basic deduction might have left him taxable on most of his earnings. With the extra ¥40,000 basic exemption and raised employment deduction, Taro now reduces his taxable income significantly—potentially dropping him into a lower bracket, saving **tens of thousands of yen annually** in both income and inhabitant taxes. ## Watch-Outs and Caveats - These reforms are **effective for FY2026** onward. Until then, older thresholds apply. ([mof.go.jp](https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2026/08taikou_gaiyou.htm?utm_source=openai)) - Future adjustments depend on CPI trends; deflation or weak inflation could limit additional relief. - The local municipal taxes may adjust at different paces—always check resident city’s notices. **Action Items:** - Request updated withholding tax tables from employer. - Revisit annual withholding declarations or supplemental income declarations in light of increased deductions. - Consult tax professional if you have foreign income, capital gains, or deductions to ensure baseline exemptions are fully utilized.