Japan Retirement Allowance Tax

Compute Japan retirement income tax, including half-taxation, short-service treatment, and temporary/director-level retirement rules.

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Calculation basis and official references

Reviewed on:

Formula basis

Service years are rounded up when extraMonths is positive. The deduction is JPY 400,000 per year through 20 years, then JPY 8,000,000 plus JPY 700,000 per additional year. One-half taxation or the short-service exception is applied according to category.

Calculation method

Estimates the retirement income deduction, taxable base for general, short-service, or officer retirement income, income tax, special reconstruction income tax, and resident tax.

Exclusions and checks required

  • Multiple retirement payments in the same year, prior-year retirement payments, and overlapping periods as an officer are not handled.
  • This estimate includes resident tax and special reconstruction income tax, but may differ from withholding statements or return-level rounding.

Example input:：JPY 20,000,000 retirement payment after 30 years of service

retirementPayYen
20000000
serviceYears
30
extraMonths
0
category
Regular retirement (5 years or less = short-service)
disabilityRetirement
No

Confirm the formal tax amount using the retirement income declaration and the payer's calculation.

Official references

FAQ

Who is this calculator for? Japan Retirement Allowance Tax

Compute Japan retirement income tax, including half-taxation, short-service treatment, and temporary/director-level retirement rules.

What values should I enter?

Applies to: Japan Retirement

How should I interpret this estimate?

Estimates the retirement income deduction, taxable base for general, short-service, or officer retirement income, income tax, special reconstruction income tax, and resident tax.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.
  3. Service years are rounded up when extraMonths is positive. The deduction is JPY 400,000 per year through 20 years, then JPY 8,000,000 plus JPY 700,000 per additional year. One-half taxation or the short-service exception is applied according to category.

Official references