NHI (国民健康保険) Calculator
For self-employed, freelancers, and part-time workers in Japan — calculate your annual NHI premium.
Note: Input field labels are in Japanese (the calculator engine is shared with the Japanese version). Numeric input works the same way; the results are universal numbers in JPY (¥).
NHI (国民健康保険) Calculator
For self-employed, freelancers, and part-time workers in Japan — calculate your annual NHI premium.
Key Points
- ✓Pays for ~70% of medical costs (you pay 30%)
- ✓Premium based on prior year income
- ✓Lump-sum discount up to 70% for low income
FAQ
Who must enroll in NHI?
Anyone in Japan not covered by employer health insurance: freelancers, self-employed, students 20+, retirees, foreign residents on visas.
How is it calculated?
Roughly 10-12% of taxable income, capped at ~¥1,000,000/year. Each city sets its own exact rate.
⚠️ Disclaimer
This calculator provides estimates only. For actual tax filing, please consult a licensed 税理士 (zeirishi) or FP (Financial Planner). Results are not a substitute for professional advice.
← See more English calculators