Japan Withholding Slip Tax Check (Through 2024)

Estimate annual tax from salary income and income/insurance deductions for year-end adjustment reconciliation.

If the calculation interface does not appear, enable JavaScript and reload. Official references remain available below.

Calculation basis and official references

Reviewed on:

Formula basis

Employment income = salary − old-scheme employment deduction. Floor taxable income to JPY 1,000, apply progressive tax, subtract the housing credit, multiply by 102.1%, and floor the final amount to JPY 100.

Calculation method

This check subtracts the pre-2025 employment-income deduction and entered personal and insurance deductions from salary, then estimates annual withholding tax after the housing credit.

Exclusions and checks required

  • Year-specific relief such as fixed-amount tax cuts, mid-year employment, multiple payers, and non-salary income are excluded.
  • Life insurance is entered as a deduction, not premiums paid, and detailed spouse and dependent eligibility is simplified.

Example input:：Pre-2025 rules for JPY 6 million salary and JPY 900,000 social insurance

year
Through FY2024
grossSalaryYen
6000000
socialInsuranceYen
900000
lifeInsuranceDeductionYen
80000
earthquakeDeductionYen
0
spouseIncomeYen
99000000
generalDependents
0
specificDependents
0
elderlyDependents
0
otherDeductionsYen
0
housingCreditYen
0

This assumes no spouse or dependents and no year-specific tax reduction; it does not recreate every withholding-slip field.

Official references

FAQ

Who is this calculator for? Japan Withholding Slip Tax Check (Through 2024)

Estimate annual tax from salary income and income/insurance deductions for year-end adjustment reconciliation.

What values should I enter?

Applies to: Japan Payroll Withholding

How should I interpret this estimate?

This check subtracts the pre-2025 employment-income deduction and entered personal and insurance deductions from salary, then estimates annual withholding tax after the housing credit.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.
  3. Employment income = salary − old-scheme employment deduction. Floor taxable income to JPY 1,000, apply progressive tax, subtract the housing credit, multiply by 102.1%, and floor the final amount to JPY 100.

Official references