Employer Costs and Employee Taxes in Japan
When you hire in Japan, employer social insurance of 15-17% is moderate, but culturally expected bonuses of 2-4 months and separate social insurance calculations on those bonuses push true annual cost well above the headline rate.
| Employer Contributions |
| Contribution |
Employer Rate |
| Health Insurance (Kenko Hoken) |
~4.9-5.0% (varies by prefecture, Tokyo 9.85% total / 2) |
| Nursing Care Insurance (age 40+) |
~0.81% (1.62% total / 2) |
| Welfare Pension (Kosei Nenkin) |
9.15% (18.3% total / 2) |
| Employment Insurance (Koyou Hoken) |
0.95% |
| Workers’ Accident Insurance (Rosai Hoken) |
0.25-8.8% (by industry, employer only) |
| Child/Childcare Contribution (from Apr 2026) |
0.23% (employer only) |
| Total Employer Cost |
~15-17% of standard remuneration |
| Employee Taxes |
| Tax / Contribution |
Employee Rate |
| Income Tax (national, progressive) |
5-45% |
| Resident Tax (prefectural + municipal) |
~10% |
| Reconstruction Surtax |
2.1% of income tax (until 2037) |
| Health Insurance (employee share) |
~4.9-5.0% |
| Nursing Care Insurance (age 40+) |
~0.81% |
| Welfare Pension (employee share) |
9.15% |
| Employment Insurance (employee share) |
0.55% |
Japan’s headline employer cost of 15-17% looks moderate by European standards, but the real cost is higher. Semi-annual bonuses of 2-4 months’ salary are culturally expected (though not legally required), and social insurance applies to bonuses separately. For an employee on JPY 6,000,000 base with a JPY 2,000,000 bonus, total employer cost including social insurance on both salary and bonus runs approximately JPY 7,300,000 to JPY 7,500,000. Budget for the bonus as a near-certainty, not an optional extra.