Japan Pension Estimator — Nenkin Calculator

How the Japan pension estimator works

This free nenkin calculator estimates the Japanese pension you would receive from age 65, in English. Enter your months of coverage, your rough salary, and your claim age, and it returns both layers of the system — the flat National Pension and the earnings-linked Employees' Pension — plus a check on whether you have cleared the qualifying period at all.

It is built for foreigners and international households in Japan, where the questions are usually different from a Japanese career: partial records, years spent abroad, and the real possibility of leaving before retirement.

How is the Japanese pension calculated?

Two layers stack, and they behave differently.

The basic pension (老齢基礎年金) is flat-rate and depends only on how many months you were covered:

Full amount × months of coverage ÷ 480

480 months is 40 years, ages 20 to 60. In FY2026 the full amount is ¥847,300 a year (¥70,608 a month), so twenty years of coverage produces roughly half of it and ten years roughly a quarter. This is why almost no foreign resident sees the headline figure — it assumes a working life that began at 20 and never left.

The employees' pension (老齢厚生年金) sits on top if you have been a company employee, and it is earnings-linked. Broadly, your average standard remuneration is multiplied by a small statutory rate for each month covered — 5.481/1000 for months from April 2003. One caveat the calculator applies conservatively: the law awards the higher of that calculation and a legacy 従前額保障 calculation, so a figure derived from the rate above is a floor rather than a ceiling.

Do you qualify at all?

You need a qualifying period of 10 years to receive anything. That threshold was cut from 25 years on 1 August 2017, which is why a great deal of older English-language advice still says foreigners never qualify.

Paid months count, formally exempted months count, and a narrow set of "aggregation periods" count. If you have pension years in another country, those usually reach you through a social security agreement rather than through the Japanese rules directly. Crossing ten years also has a consequence people miss: the lump-sum withdrawal you might otherwise claim on leaving Japan requires that you have not met the qualifying period.

Does claiming early or late change the amount?

Permanently, in both directions. The standard age is 65, and the window runs from 60 to 75:

Both adjustments last for life, which is why the estimator lets you move the claim age and watch the figure move with it.

Worked example

Twelve years of coverage — 144 months — on an average standard remuneration of ¥400,000 a month produces roughly ¥254,190 of basic pension plus ¥315,706 of employees' pension: about ¥569,900 a year, or ¥47,500 a month, from 65 for life.

For scale at the other end, the government's model household — a standard earner plus a spouse, both with full basic pensions — is ¥237,279 a month in FY2026. Treat that as a benchmark for a complete Japanese career, not a forecast for a partial one.

Frequently asked questions

How much pension will I get in Japan? It depends on months of coverage and, if you were an employee, your salary. Twelve years on a mid-range salary is around ¥47,500 a month; forty years on the basic pension alone is ¥70,608 a month. Enter your own record above for an estimate of both layers.

How many years do I need to qualify for a Japanese pension? Ten. The qualifying period fell from 25 years to 10 on 1 August 2017. It combines paid months, formally exempted months, and certain aggregation periods — and where a social security agreement exists, contribution periods in that country may be totalised toward the threshold.

Can foreigners receive a Japanese pension? Yes. Nationality is not a condition — coverage is. If you meet the qualifying period you are entitled on the same terms as anyone else, and you can claim from abroad, paid into an overseas account, provided you keep the annual paperwork current.

Is this the same as the official nenkin figure? No. This is a planning estimate built on FY2026 rates and a simplified salary history. Your official record is on ねんきんネット or available from a 年金事務所, and it accounts for your actual standard remuneration history and any revaluation — which this cannot.

This is an educational estimate, not an official pension quote. Amounts are gross, in today's yen, and revised every April. Confirm your own record with the Japan Pension Service.