Calculate Taxes, Salaries & Living Money in Japan and Korea — In Your Language
From Japanese Payslips (給与明細), Withholding Tax (源泉徴収), Resident Tax (住民税), and Pension Lump-Sum Refunds (脱退一時金) to Korean 4 Major Insurances, 3.3% Freelance Refunds, and Dividend Tax — built on official government formulas.
Japan Withholding Tax (源泉徴収)
Calculate Japanese monthly salary and bonus withholding income tax (源泉徴収税額) using the official NTA Computer Formula (電算機特例) for Column A (甲欄) and Column B (乙欄).
Japan Salary & Take-Home Pay (手取り)
Calculate your exact take-home pay (手取り) in Japan by prefecture, including Kyokai Kenpo Health Insurance, Welfare Pension (厚生年金), Employment Insurance, Income Tax, and Resident Tax (住民税).
Japan Resident Tax (住民税)
Estimate your Japanese Individual Resident Tax (個人住民税: 10% income levy + ¥5,000 per-capita levy) billed from June to May based on your previous year’s income.
Pension Refund (脱退一時金) Calculator
Calculate your Japan Pension Lump-Sum Withdrawal Payment (脱退一時金) for Employees’ Pension (厚生年金) or National Pension (国民年金) up to 60 months, plus your 20.42% withholding tax refund.
Part-Time Pay & 28h / Income Walls
Calculate part-time (アルバイト) monthly/annual income, check compliance with the 28-hour/week visa limit for students/dependents, and track Japan’s Income Walls (¥1.0M, ¥1.06M, ¥1.23M, ¥1.30M).
How to Read Japanese Payslips
Decode every Japanese term on your monthly payslip (給与明細書): Attendance (勤怠), Earnings (支給), Social Insurance & Tax Deductions (控除), and Net Pay (差引支給額).
Year-End Tax Adjustment (年末調整) Guide
Step-by-step instructions for Japan’s 3 Year-End Tax Adjustment (年末調整) forms: Dependent Exemption (扶養控除等申告書), Basic Deduction (基礎控除申告書), and Insurance Deduction (保険料控除申告書), plus overseas dependent rules.
Reading Your Resident Tax Bill
Understand every section of the Japanese Resident Tax Assessment Notice (住民税決定通知書) and Payment Slips (納付書) sent in May–June, including Special Collection vs Ordinary Collection.
Unemployed Health Insurance & Pension
Compare Municipal National Health Insurance (国民健康保険) vs Company Voluntary Continuation (任意継続) when between jobs in Japan, and learn how to apply for the Unemployment Pension Exemption.
Leaving Japan Money Checklist
Step-by-step interactive checklist before leaving Japan permanently: Moving-Out Notice (海外転出届), Tax Representative (納税管理人), Resident Tax settlement, Pension Lump-Sum claim, and bank closure.
Korea Salary & 19% Expat Tax Calculator
Calculate your net monthly take-home pay in South Korea with 2026 4 Major Social Insurances (국민연금, 건강보험, 장기요양, 고용보험), progressive income tax, and side-by-side comparison with the 19% Foreign Worker Flat Tax.
Korea Part-Time & 3.3% Tax Refund
Switch between Korea’s 3 income types: ① 3.3% Freelancer / Gig Income (with May tax refund estimate), ② Daily Worker (₩150,000/day tax-exempt), and ③ Hourly Part-Time (with mandatory Weekly Holiday Pay 주휴수당).
Korea & Japan Severance Calculator
Calculate mandatory Korean Statutory Severance Pay (퇴직금 after 1+ year of service) and Japanese Retirement Income Tax (退職所得控除: ¥400k/yr up to 20 yrs, ¥700k/yr above 20 yrs, taxed on 1/2).
Dividend + Salary Combined Tax
See how your tax changes when combining Dividends & Interest with Salary or Freelance income: compares Japan’s 20.315% Separate Tax, Comprehensive Tax Credit (配当控除), and NISA against Korea’s ₩20,000,000 Financial Income Comprehensive Tax.
Savings, Compound & Loan Calculator
Calculate after-tax interest on monthly savings or lump-sum deposits using Japan (20.315% / NISA 0%) or Korea (15.4% / 9.5% / 0%) tax rates, or switch to Loan Repayment to compare Equal Total Payment vs Equal Principal.
FX Fee & DCC Card Calculator
Compare paying in Local Currency vs Dynamic Currency Conversion (DCC) when traveling or living in Japan & Korea. See exact card network fees, bank FX markups, and how much DCC costs you.
Calculations, schedules, and guides on HonsMoney are approximate estimates and may differ from your actual tax or insurance amounts due to individual circumstances, municipal rules, visa status, or law revisions. This site does not provide tax or legal advice. Always verify final figures and deadlines directly with your local Tax Office (税務署 / NTS), Municipal Office (役所), Pension Service (年金事務所 / NPS), or your employer’s HR/payroll department.