Japan Monthly Payroll Withholding (2026)

Estimate monthly withholding tax by applying FY2026 monthly MOF tables (categories A/B) and social-insurance-deducted monthly salary.

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Calculation basis and official references

Reviewed on:

Formula basis

Below the table minimum, Category A is zero and Category B is floor(monthly pay × 3.063%). Listed 2026 bands return their row value; high bands use floor(anchor tax + excess over the boundary × marginal rate). Monthly tax × 12 is also shown.

Calculation method

This calculator applies Japan’s 2026 monthly withholding table to salary after social insurance using Category A or B and the Category A dependent count.

Exclusions and checks required

  • Monthly withholding is not final year-end tax and excludes bonuses and other salary payments.
  • Electronic calculation, more than seven dependents, and secondary-salary deductions are not implemented.

Example input:：2026 monthly pay of JPY 350,000 under Category B

monthlyPayAfterInsuranceYen
350000
column
Category B
dependents
0

Category B ignores the dependent input; the result is monthly table withholding, not a final annual liability.

Official references

FAQ

Who is this calculator for? Japan Monthly Payroll Withholding (2026)

Estimate monthly withholding tax by applying FY2026 monthly MOF tables (categories A/B) and social-insurance-deducted monthly salary.

What values should I enter?

Applies to: Japan Payroll Withholding

How should I interpret this estimate?

This calculator applies Japan’s 2026 monthly withholding table to salary after social insurance using Category A or B and the Category A dependent count.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.
  3. Below the table minimum, Category A is zero and Category B is floor(monthly pay × 3.063%). Listed 2026 bands return their row value; high bands use floor(anchor tax + excess over the boundary × marginal rate). Monthly tax × 12 is also shown.

Official references