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Social Insurance Calculator
Calculate National Health Insurance and National Pension premiums
For informational purposes only. Not financial or tax advice. Consult a tax professional.
Social Insurance Calculator
Calculate National Health Insurance and National Pension premiums
National Health Insurance + National Pension
NHI rates vary by municipality
¥
Business income after expenses
Nursing care insurance applies to ages 40-64
Number of household members enrolled in NHI
Annual Estimate
¥738,974
Annual Social Insurance Total
¥61,581
Monthly Average
14.8%
Percentage of Income
Burden ratio (30% income cap)
NHI Premium Breakdown
Medical Portion¥395,348
Elderly Support Portion¥133,506
NHI Total¥528,854
National Pension
Monthly Premium¥17,510
Annual Premium¥210,120
Comparison with Employment
As Self-Employed
¥738,974
As Employee
¥696,180
Difference+¥42,794
Social Insurance Deduction
All social insurance premiums paid are fully deductible from income, providing tax savings on your return.
Deduction Amount: ¥738,974
Est. Tax Savings: ¥221,692
Calculation Notes
National Pension uses 2025 rate of ¥17,510/month. NHI varies by municipality—contact your local office for exact rates.
