HisabCalc › Country-specific

Japan Income Tax Calculator

Estimates Japanese take home pay by deducting national income tax, resident tax and social insurance from a gross salary.

Enter your numbers

Gross annual salary (JPY)

Example: 5000000

National income tax (%)

Example: 20

Resident tax (%)

Example: 10

Social insurance (%)

Example: 15

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

Formula

incomeTax = gross * incomeTaxPct / 100; residentTax = gross * residentTaxPct / 100; socialInsurance = gross * socialInsurancePct / 100; net = gross - incomeTax - residentTax - socialInsurance

How the calculation works

Japan collects tax at both national and local level, and the resident tax is billed separately from the national tax that is withheld each month.

Social insurance premiums are shared between employer and employee, but the employee share alone is still one of the larger deductions on a Japanese salary.

The national tax uses progressive brackets with a deduction for employment income, so the effective rate on a mid-range salary is usually lower than the top bracket suggests.

Common mistakes

Forgetting that the resident tax is based on the previous year's income makes the deduction look wrong in the first year of a new job, when it may not be charged at all.

When to use it

Use it to compare the monthly take home of a Tokyo offer with the same gross figure in another country before you decide.

Worked example

On a 5,000,000 yen salary with 20 percent income tax, 10 percent resident tax and 15 percent social insurance the net is 2,750,000 yen.

Income tax 1,000,000.00

Resident tax 500,000.00

Social insurance 750,000.00

Net 2,750,000.00

Common questions

Why is Japanese social insurance so large?

It bundles health insurance, the pension and unemployment cover, and a long term care premium for older workers, so the combined rate is much higher than a single contribution.

Last updated: 2026-10-04