Japan’s pension system (年金, nenkin) is mandatory for all residents between 20 and 59 — including foreign nationals. This surprises many new arrivals who assume pension enrollment is only for those planning to stay permanently. Understanding and properly enrolling in the pension system protects you legally and may result in a lump-sum refund payment when you leave Japan. This guide provides a practical orientation; consult the Japan Pension Service (日本年金機構) or a social insurance advisor (社会保険労務士) for your specific situation.
Japan’s Two Main Pension Tracks
Employees’ Pension Insurance (厚生年金保険, Kosei Nenkin)
- For company employees; enrollment through your employer
- Premium: approximately 18.3% of monthly salary, split equally between employer and employee (~9.15% each)
- Premium is deducted from your salary automatically — no action required to enroll if employed full-time at a company with social insurance
- Covers: old-age pension, disability pension, survivor pension
- Company employees enrolled in Kosei Nenkin are also automatically enrolled in the National Pension (Kokumin Nenkin) as part of the integrated system
National Pension (国民年金, Kokumin Nenkin)
- For self-employed, freelancers, part-time workers, students, and those not covered by Kosei Nenkin
- Premium (2025): ¥16,980/month (flat rate, same for all)
- Must enroll yourself at your city/ward office within 14 days of address registration or change in status
- Failure to enroll is technically illegal and can result in loss of benefits
Enrollment Process (National Pension)
- Go to your city/ward office (市区町村の窓口) — international section usually available
- Bring: residence card, My Number card or notification slip
- Complete enrollment form (国民年金被保険者資格取得届)
- Receive pension handbook (年金手帳, now being replaced by basic pension number notification)
- Monthly payment: by bank transfer (口座振替), convenience store payment, or at financial institutions
Premium Exemption and Reduction
If your income is low, you may qualify for partial or full exemption:
- Full exemption (全額免除): Income below a certain threshold; premiums waived but pension credit accrues at reduced rate (1/2)
- Partial exemption (一部免除): 3/4, 1/2, or 1/4 reduction based on income
- Student exemption (学生納付特例): Students can defer payments; payment recommended later to maintain full benefit
- Apply at city/ward office with proof of income (or zero income declaration)
Lump-Sum Withdrawal Payment (脱退一時金, Dattai Ichijkin)
One of the most important facts for foreign residents leaving Japan permanently:
- Foreign nationals who have paid into the National Pension (or Kosei Nenkin) for 6 months or more can apply for a lump-sum withdrawal after leaving Japan
- Application must be made within 2 years of leaving Japan and losing Japanese residency
- Amount: based on premiums paid, with a maximum of 60 months (5 years) payable regardless of actual payment period
- Tax: 20.42% withholding tax applies; some recovery possible through tax treaties depending on your country
- Apply: submit application to Japan Pension Service from abroad after departing Japan; forms available at nenkin.go.jp
Totalization Agreements
Japan has social security totalization agreements with many countries that:
- Prevent double-payment of pension contributions in both Japan and your home country simultaneously
- Allow combination of contribution periods from both countries to qualify for pension benefits
- Countries with agreements: Germany, UK, South Korea, USA, Belgium, France, Canada, Australia, Netherlands, Czech Republic, Spain, Ireland, Brazil, Switzerland, Hungary, India, Luxembourg, Philippines, and others
- Under these agreements, employees sent from agreement countries for less than 5 years generally remain covered by their home country’s pension only
Long-Term Residents: Building Toward a Pension
To receive a Japanese old-age pension, you generally need a total contribution period of 10 years (120 months) or more. For those planning a long career in Japan, consistent pension contributions build toward a meaningful benefit:
- Full contribution period for maximum benefits: 40 years (480 months)
- 2025 model monthly benefit for full contribution period (Kokumin Nenkin): approximately ¥68,000/month
- Kosei Nenkin adds income-proportional benefit on top of this