Japan Pension System: Nenkin Overview
Japan pension system coverage starts with a simple rule: almost every resident aged 20 to 59 belongs to it, whatever passport they hold.12 That universality surprises newcomers, and missing it is the costliest pension mistake a foreign resident can make.
Procedures, fees, and requirements can change. Confirm current details at the Japan Pension Service site. This article is general information, not tax, legal, or immigration advice; for your specific case, consult a licensed sharoshi for pension questions or a zeirishi for tax questions.
Overview
Japan runs a universal two-tier public pension, the core of the social insurance system. The 国民年金 (kokumin nenkin, "National Pension") is the flat-rate first pillar covering all residents aged 20 to 59.1 The 厚生年金保険 (kosei nenkin hoken, "Employees' Pension Insurance") is the earnings-related second pillar for salaried workers, layered on top of the first.3
Both tiers feed one benefit architecture. Employees' Pension members simultaneously hold National Pension coverage, and part of their earnings-linked contribution funds the shared Basic Pension through a single integrated collection channel.34 The Ministry of Health, Labour and Welfare supervises both programs, while the 日本年金機構 (nippon nenkin kiko, "Japan Pension Service") administers enrollment, collection, records, and payments nationally.34
The two pillars at a glance
The first pillar charges everyone the same flat monthly amount: 17,510 yen for fiscal 2025, and 17,920 yen per month from April 2026 to March 2027 (as of 2026-04-01; confirm current figures with the Japan Pension Service).15 The second pillar charges a rate on pay instead: 18.3 percent of standardized remuneration and bonuses in total, split evenly at 9.15 percent each between employer and employee (as of 2026; confirm current figures with the Japan Pension Service).367
| National Pension (first pillar) | Employees' Pension (second pillar) | |
|---|---|---|
| Who | All residents 20 to 59 | Salaried workers under 70 in covered workplaces |
| Contribution base | Flat monthly amount | Earnings-linked rate on standardized pay |
| FY2025 to FY2026 figure | 17,510 yen, then 17,920 yen | 18.3 percent total, 9.15 percent each side |
| Benefit at 65 | Flat Basic Pension | Basic Pension plus earnings-related supplement |
The table as a whole reflects JPS and MHLW materials (as of 2026-04-01).154 The figures reset on a government schedule, so always check the fiscal year before budgeting.
Where the Basic Pension fits
The 基礎年金 (kiso nenkin, "Basic Pension") is the common floor under both pillars. Forty years of paid National Pension contributions earn the full Basic Pension: 847,300 yen per year in fiscal 2026, or about 70,608 yen per month (as of 2026-04-01; confirm current figures with the Japan Pension Service).8 An Employees' Pension retiree receives this floor plus an earnings-related supplement computed from career remuneration.3
The diagram shows the routing and the payoff (as of 2026).138 Ten or more years of combined coverage qualifies a resident for some Basic Pension from age 65, a threshold that fell from 25 years in August 2017.89
Who must join
Every person with a registered address in Japan aged 20 to 59 must join the National Pension and pay contributions by law, irrespective of nationality or length of stay.12 There is no opt-out for mid- to long-term foreign residents, and short-stay assumptions do not create one.
Enrollment routing follows three categories. Category 1 covers the self-employed, students, and the unemployed, who file at the municipal office within 14 days of becoming subject.1 Category 2 covers salaried workers, enrolled through the employer.3 Category 3 covers the dependent spouse of a Category 2 worker, filed through the spouse's employer with no direct contribution.1 Low-income residents can apply for full or partial exemption instead of silently skipping payments.10
The private third pillar in one paragraph
Voluntary top-ups sit above the two public pillars for residents who want more than the statutory benefit. The individual defined-contribution plan (iDeCo), employer-run defined-contribution plans, and National Pension Funds all convert extra contributions into extra retirement income with distinct tax treatment.4 The investment mechanics and provider choices belong to dedicated money guides; the pension-side frame, caps, and decision logic live in this subcategory's private top-ups entry.
What the rest of this subcategory covers
Read in any order, but the sequence below follows a newcomer asking questions. The National Pension entry details the flat-rate pillar, ward-office enrollment, and exemptions. The Employees' Pension entry details the earnings-linked pillar, the rate split, and the ceiling. The vesting entry explains the 10-year rule and early or late claiming. The compliance entry explains how pension history meets immigration review. The statements entry teaches the yearly notice and the online portal. The top-ups entry compares iDeCo and its alternatives.
Pension records for roughly the past two years are reviewed in permanent residency screening, and arrears weigh heavily even after late payment.11 Treat every contribution month as both retirement funding and residence paperwork.
Good to know
Pension follows residence, not citizenship
Coverage turns on having a registered address and being 20 to 59, not on nationality or visa type.12 New arrivals who assume a work visa alone settles the matter miss the separate municipal filing that Category 1 requires.
Arrears surface at immigration review
Practitioner guidance documents a roughly two-year pension record review in permanent residency screening, with self-paid National Pension months under the closest scrutiny.11 The compliance entry in this subcategory walks through the evidence set and the fix sequence.
Figures in this subcategory carry as-of dates
The flat contribution moved from 17,510 yen to 17,920 yen between fiscal 2025 and fiscal 2026, and benefit amounts reset yearly too.15 Any undated figure found elsewhere, especially in blogs, deserves a check against the Japan Pension Service before it enters a budget.
See also
- Shakai Hoken Overview
- iDeCo: The Private-Pension Path
- The New NISA (2024 Onward)
- The Financial and Tax Criteria for Permanent Residency
- Preparing the Permanent Residency Application