Japan Employees' Pension Premium

Calculate total, employee, and employer Japan Employees' Pension premiums from salary and bonus using standard remuneration.

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Calculation basis and official references

Reviewed on:

Formula basis

Multiply eligible payroll/bonus amounts by the 18.3% pension rate and split employer and employee shares equally after rounding.

Calculation method

This estimate approximates the Japanese Employees’ Pension Insurance premium by applying the statutory premium rate to standard monthly remuneration and bonus amounts.

Exclusions and checks required

  • Standard remuneration class is not the same as gross salary; it changes by periodic reassessment.
  • Bonus caps, effective dates, qualification start/end, and special allowances require separate rules.
  • Health and caregiving premiums and child support contributions are separate systems.

Example input:：Company employee with 300,000 JPY monthly standard remuneration

standardMonthlyRemunerationYen
300000
standardBonusYen
0
employmentType
Standard insured
effectiveMonth
2026-04

The personal burden shown may differ from the official payroll value if grade, effective month, or rounding differs.

Official references

FAQ

Who is this calculator for?

Calculate total, employee, and employer Japan Employees' Pension premiums from salary and bonus using standard remuneration.

What values should I enter?

Applies to: Japan Social insurance premiums

How should I interpret this estimate?

This estimate approximates the Japanese Employees’ Pension Insurance premium by applying the statutory premium rate to standard monthly remuneration and bonus amounts.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.

Official references