Japan Nenkin pension calculator (Kosei & Kokumin)
Calculate Japanese Kosei Nenkin (18.3% split) and Kokumin Nenkin monthly pension contributions and estimate projected retirement pension payout in JPY.
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標準的な加入期間：20年〜40年。
厚生年金保険料 18.3% の半分を会社が負担
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About this tool
Calculate Japanese public pension contributions and estimate your retirement pension payout (Nenkin 年金). Accurately models the two-tier Japanese pension system: Tier 1 Basic National Pension (Kokumin Nenkin) and Tier 2 Employees’ Pension Insurance (Kosei Nenkin at 18.3% shared 50/50 with employer).
How to use it
- 1 Enter your gross monthly salary in JPY.
- 2 Specify expected working career duration (in years) contributing to Kosei Nenkin.
- 3 View monthly pension deductions and estimated annual retirement pension benefit from age 65.
Questions
What is the contribution rate for Kosei Nenkin in Japan?
The total Kosei Nenkin premium rate is 18.30% of standard monthly remuneration, split equally: 9.15% paid by the employee and 9.15% paid by the employer.
At what age can you start receiving public pension in Japan?
The statutory standard pension age in Japan is 65 years, though early claiming (Kuriage from age 60) or deferred claiming (Kurisage up to age 75 with increased benefits) is permitted.
Is my data uploaded?
No. This tool runs in your browser, so your text and files never reach our server.
Is this tool free?
Yes. It’s free to use with no sign-up and no limits for normal use.
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