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About Japan tax

Japan's national income tax runs from 5% at the bottom to 45% on amounts above ¥40,000,000/year. Residence tax (juminzei) is a flat 10% of taxable income, collected a year in arrears (new arrivals get a surprise bill in their second year). Shakai hoken — covering health insurance (~5% employee share) and employee pension (~9.15%) — brings combined deductions to roughly 28–33% of gross for most working professionals.

Japan also pays a proportional consumption tax (currently 10%) on most purchases, which indirectly reduces real purchasing power. Bonus income (typically paid twice yearly in June and December) is taxed separately and is often a substantial part of total annual compensation in Japanese corporate culture, particularly for accountants and senior engineers.

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