👴 National Pension System Guide for Foreign Residents in Japan

Japan\'s National Pension system (Kokumin Nenkin / 国民年金) is a public pension program that provides old-age, disability, and survivor benefits to all enrolled residents. If you are a foreign resident aged 20 to 59 and not enrolled in an employer\'s pension (Kosei Nenkin), you are generally expected to enroll. This includes self-employed workers, freelancers, students, and unemployed residents. Enroll at the pension counter at your local city hall within 14 days of becoming eligible. Your enrollment will be linked to your Basic Pension Number (kiso nenkin bangou), which you should keep safe for all future pension-related procedures.

The Two Types of Pension

Japan has a two-tier pension system. The National Pension (Kokumin Nenkin) is the base tier that covers everyone not enrolled in employer-based insurance. This includes self-employed workers, freelancers, students, unemployed residents, and part-time workers whose employers do not provide pension coverage. The monthly premium is a fixed amount for everyone — approximately 16,980 yen per month in 2026 (the amount is adjusted annually). Payments can be made at convenience stores using payment slips, by bank auto-deduction, or by credit card. Setting up automatic bank deduction is recommended, and it also gives you a small discount of about 600 yen per year.

The Employees\' Pension (Kosei Nenkin / 厚生年金) is the second tier, covering company employees. Premiums are calculated as approximately 18.3% of your monthly salary, split 50/50 between you and your employer — so you pay about 9.15% of your salary. Employees\' Pension automatically includes National Pension coverage plus additional benefits, resulting in significantly higher payouts at retirement. If you work for a company that enrolls you in Kosei Nenkin, you do not need to separately enroll in National Pension — your employer handles everything through payroll deductions.

What Benefits Does the Pension Provide?

The pension system provides three types of benefits. Old-age pension pays a monthly income after you reach age 65, provided you have contributed for at least 10 years (including periods covered by social security agreements with other countries). The full National Pension benefit for 40 years of contributions is approximately 67,000 yen per month; Employees\' Pension recipients receive additional amounts based on their salary history. Disability pension provides income if you develop a qualifying disability while enrolled — this applies even to young workers and students. Survivor pension provides income to your dependents if you pass away while enrolled.

Lump-Sum Withdrawal for Foreign Residents Leaving Japan

One of the most important things for foreign residents to know: if you paid into the pension for 6 or more months and then leave Japan permanently, you can apply for a lump-sum withdrawal payment (dattai ichijikin) within 2 years of your departure date. The refund covers up to 60 months (5 years) of contributions. The amount varies depending on how many months you contributed — for example, someone who paid National Pension premiums for 36 months would receive approximately 500,000 to 600,000 yen as a lump-sum withdrawal. A 20.42% withholding tax is deducted, but you can reclaim this tax by appointing a tax representative (nouzei kanrinin) in Japan before you leave. The refund is deposited to your overseas bank account, typically within 3 to 6 months of applying.

To apply, submit the lump-sum withdrawal application form (available from the Japan Pension Service website in multiple languages) along with your pension handbook, a copy of your passport showing your departure date, and your overseas bank account details. You can mail the application from abroad after leaving Japan.

Exemption and Reduction Options

If you have low income or no income, you can apply for premium exemption or deferral at your city hall. There are several levels: full exemption (pay nothing), three-quarter exemption, half exemption, and quarter exemption. Students can apply for a special student payment deferral (gakusei nofu tokurei) that postpones payments until after graduation. To qualify for any exemption, you must file a tax return — even if your income is zero. Without a filed tax return, the municipality cannot verify your income and cannot grant the exemption. During exempted periods, you still accumulate partial pension eligibility, though the benefit amount will be reduced.

Social Security Agreements

Japan has social security agreements with over 20 countries, including the United States, United Kingdom, Germany, France, South Korea, China, Brazil, Philippines, and India. These agreements serve two purposes: they prevent you from being double-enrolled in pension systems in both Japan and your home country, and they allow you to combine pension contribution periods across countries when calculating eligibility for benefits. For example, if you contributed 7 years in Japan and 5 years in the United States, both countries may count the combined 12 years toward their eligibility requirements. Check whether your home country has an agreement with Japan — it could significantly affect your pension strategy and whether the lump-sum withdrawal or long-term benefit claim is more advantageous for your situation.