⏱️ Japan Part-Time Pay, Income Walls (年収の壁) & Student 28h/Week Calculator

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).

✅ Official Rule Verification Date: 2026-11-04 (2026/2027) 🏛️ Official Government Sources: Immigration Services Agency of Japan (出入国在留管理庁) · Ministry of Health, Labour and Welfare (厚生労働省) · National Tax Agency of Japan (国税庁)

🔒 100% Client-Side Privacy: Your salary and income inputs are calculated strictly inside your browser and never sent to any server.

📌 Part-Time Pay & 28h / Income Walls — 핵심 요약 (Key Takeaways)

Student (留学) and Dependent (家族滞在) visa holders with work permission are strictly limited to 28 hours per week across ALL jobs combined (up to 40h/week during official school breaks).
Tracks how close your annual earnings are to the ¥1.0M Resident Tax wall, ¥1.06M/¥1.30M Social Insurance walls, and the reformed Income Tax threshold.
Shows how many additional hours you can safely work without breaching visa or tax thresholds.

📖 How the Formula Works & Official Terminology (with Local Terms)

Step 1 (Annual Projection): Multiplies hourly wage by weekly hours during regular weeks and school vacation weeks.
Step 2 (28-Hour Visa Check): Verifies whether weekly hours exceed the Immigration Services Agency 28-hour cap.
Step 3 (Income Wall Analysis): Compares projected annual income against each statutory tax and social insurance threshold.

📊 Sample Salary & Tax Reference Table by Income Bracket

Income Wall (年収の壁)	What Happens?	Who It Affects	Important Detail
¥1,000,000 Wall	Resident Tax (住民税) starts	All part-timers	Varies from ¥930k to ¥1.0M by city
¥1,060,000 Wall	Company Social Insurance (20h+/wk)	Part-timers at firms with 51+ staff	Daytime students are generally exempt
¥1,230,000+ Wall	National Income Tax starts (formerly ¥1.03M)	All earners & dependents	Reflects expanded basic & salary deductions
¥1,300,000 Wall	Lose dependent status on family health/pension	Spouses & family dependents	Commuter allowance IS included in the ¥1.3M check

❓ Frequently Asked Questions (FAQ)

Q. Does the 28-hour limit apply per job or across all jobs?

Across ALL jobs combined. Working 15 hours at Job A and 15 hours at Job B (30 hours total) violates immigration law and can lead to visa renewal denial.

Q. Does commuter allowance count toward the ¥1.3M dependent insurance wall?

Yes! While commuter allowance is tax-free for income tax, health insurance associations include commuter allowance when checking the ¥1,300,000 dependent limit.

🏛️ Official Government Citations & Revision Schedule

Immigration Services Agency of Japan (出入国在留管理庁) — Permission to Engage in Activity Other Than That Permitted (28h/week Rule)
Official Rule Verification Date: 2026-11-04 | 분기별 출입국관리법 시행규칙 개정 여부 점검 (1·4·7·10월)
Ministry of Health, Labour and Welfare (厚生労働省) — Employment Insurance Rates, Regional Minimum Wage & Income Wall Package
Official Rule Verification Date: 2026-11-04 | 고용보험 매년 4월 / 지역별 최저임금 매년 10월 발효 (3월·4월·9월·10월 점검)
National Tax Agency of Japan (国税庁) — 2026/2027 Withholding Tax Tables & Computer Formula (源泉徴収税額表)
Official Rule Verification Date: 2026-11-04 | 매년 9월 차년도 표 공개 → 1월 급여부터 적용 (1월·9월 중점 점검)

→ 📅 Tax Revision Calendar & Sources

⚠️ ⚠️ Important: Figures May Differ — Always Verify with Your Tax Office or Relevant Agency

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.

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