Japanese Tax Calculators (Free, No Sign-up)
A set of free tools to quickly estimate income tax, residence tax, the Furusato Nozei cap, and the tax on retirement allowances right in your browser. The values you enter are never sent anywhere and are calculated only on your own device. Please use them as rough guides only (the exact tax depends on the deductions that apply to you). If you want a precise calculation that factors in household composition, social insurance premiums and deductions, try the detailed simulation.
1. Quick income tax (taxable income → income tax)
An accurate calculation based on the National Tax Agency's "income tax quick-reference table." The "taxable income" you enter is the amount left after subtracting the various deductions (basic deduction, social insurance premium deduction, dependent deduction, etc.) from your income. The result includes the special reconstruction income tax (2.1%).
2. Rough residence tax
Residence tax is the "income-based portion (about 10% of taxable income) + the per-capita portion (standard of about ¥5,000, including the forest environment tax)." Because the taxable income base for residence tax is slightly smaller than for income tax, this is a rough estimate using the same taxable income. The per-capita amount varies somewhat by municipality.
3. Furusato Nozei deduction cap (guide)
A guide to the maximum you can donate while keeping your own out-of-pocket cost at ¥2,000. It is calculated from your taxable income, using roughly 20% of the income-based portion of residence tax as the benchmark. Because the real cap changes with social insurance premiums, other deductions and household composition, please also check the official simulator on each Furusato Nozei site before donating.
4. Tax on a retirement allowance (retirement income)
For a retirement allowance, "(retirement allowance − retirement income deduction) × 1/2" is the taxable amount (retirement income). The retirement income deduction is ¥400,000 × years for 20 years of service or less, and ¥8,000,000 + ¥700,000 × (years − 20) for more than 20 years (minimum ¥800,000). Assuming the "report concerning receipt of retirement income" has been filed, this estimates income tax (including the reconstruction tax) + residence tax of 10%.
5. Rough take-home pay from annual salary (employees)
A rough estimate of take-home pay for an employee (salaried worker), after subtracting social insurance premiums, income tax and residence tax from gross annual salary. It assumes single, no dependents, no other deductions, and calculates social insurance premiums at about 15% of annual salary (in reality this varies by your coverage and municipality). Please use it as a rough guide only.
6. Gift tax (calendar-year taxation)
Tax applies to the total gifts you received during one year, minus the ¥1.1 million basic deduction. The special tax rate = gifts from lineal ascendants (parents, grandparents) to a child or grandchild aged 18 or over; the general tax rate = everything else. Calculated using the National Tax Agency's quick-reference table.
※ These tools are rough estimates for general information only and are not tax advice. The actual tax varies with income deductions, tax credits, your municipality and various special measures. For exact figures, please check the National Tax Agency's "tax return preparation corner," your local tax office, or a licensed tax accountant. The income tax quick-reference table is based on the system as of June 2026.
Related pages
- How residence tax works and is calculated
- Complete guide to Furusato Nozei / Tax on retirement allowances
- Tax basics (what taxable income is; how deductions work)