Japan Net Salary Calculator (Estimate)

Estimate Japanese social insurance, income tax, and resident tax from your annual income, prefecture, and family structure to calculate your take-home pay in Japan.

Cases where your take-home pay may change further

  • Turning 40 adds the long-term care insurance premium (approximately ¥5,000–¥7,000/month).
  • Above ¥8.5 million annual income, the employment income deduction reaches its cap (¥1.95 million), so the effective tax rate rises with higher earnings.
  • Having dependents qualifies you for the dependent deduction, reducing your income and resident taxes.

FAQ

This tool is an approximation based on Kyokai Kenpo (Japan Health Insurance Association) enrollment. If you belong to a union-managed health plan, your rates will differ. Bonuses, iDeCo contributions, life insurance deductions, and mortgage deductions are also not reflected.

Resident tax is based on your prior year's income and collected from June of the following year. This tool estimates it from the income you enter for the current year, so the result may differ from your actual bill by several months to a full year.

Enter the total number of dependents in the field provided. The calculation treats all dependents as general relatives aged 16 and over, so the enhanced deduction for specific dependents (ages 19–22) and elderly dependents (70+) is not included — actual taxes may be lower.
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Side Note — Why take-home pay in Japan is typically 75–85% of gross

For a salaried worker in Japan, combined taxes and social insurance typically amount to roughly 15–25% of gross income for the standard ¥4–6 million range. The breakdown is broadly: Employees' Pension (approx. 9.15%), health insurance (approx. 5%), and employment insurance (approx. 0.6%) are deducted first as social insurance, and income and resident taxes are then calculated on the remainder.

Income tax is progressive, so the rate rises with income. Resident tax, however, is levied at a flat 10% on prior-year income, which is why people sometimes feel their take-home pay is lower the year after a job change or pay rise. Understanding the mechanics helps make your life-planning calculations more accurate.

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