Japan Pension Categories 1, 2 and 3: Which Are You?

Quick Answer: Everyone in Japan aged 20 to 59 sits in one of three categories. Category 2 (employees) is the only one that builds a second earnings-linked pension. Category 3 (a dependent spouse of a Category 2) pays nothing and still accrues. Category 1 is everyone else — and it's the default you land in without being told.

Nobody assigns you a pension category out loud. You acquire one by registering at a municipal office, and you change it by getting a job, losing one, marrying, or turning 60 — usually without anyone explaining that a change happened.

That matters because the category decides two separate things: what you're required to pay, and what you're building. Get the first wrong and you accumulate months worth nothing. This guide covers both, and the switching moments where records go missing.

This is educational information, not financial or pension advice. Your category depends on your employment, age and household circumstances — confirm your own position with the Japan Pension Service or your municipal office. For the eligibility test, see the 10-year rule.

Which category are you in?

Who Premium
Category 1 (第1号) Self-employed, freelancers, students, unemployed, aged 20–59 and resident in Japan ¥17,920/month, paid by you
Category 2 (第2号) Company employees and civil servants in 厚生年金 or 共済 9.15% of salary, employer matches
Category 3 (第3号) Spouse of a Category 2, aged 20–59, income under ¥1.3m Nothing

Two things trip up foreign residents here.

Category 1 is the default, and it's a liability, not a status. If you're registered as a resident, aged 20 to 59, and not in an employee scheme, you are Category 1 and the premium is due — even as a student, even between jobs, even if nobody has explained it. Nationality is irrelevant.

Category 3 requires your spouse to be Category 2. This is the assumption that catches households: if your spouse is self-employed, you are not Category 3. You're Category 1, and you owe the premium yourself. "Dependent" in the everyday sense and 第3号被保険者 in the legal sense are not the same thing.

What does each one actually build?

The premium differences are visible. The accrual differences are not, and they matter more.

Category 1 builds the flat basic pension only. Pay all 40 years and you reach the full ¥847,300 a year.

Category 2 builds the basic pension and the earnings-linked employees' pension on top. And the 18.3% rate is split with your employer, so half the contribution is money that never passes through your hands. Whatever else is true, this is the category where the arithmetic is most in your favour.

Category 3 builds the basic pension while paying nothing at all. A dependent spouse accrues months for free — which is genuinely valuable, and the reason the ¥1.3m threshold gets so much household attention. Note this is the social insurance dependency test, a different concept from the tax-side spouse deductions covered in investing as a couple in Japan. See also the dependent-spouse pension.

What none of the three does is build the employees' pension without employment. If your plan involves a second layer, it comes from being Category 2 — see how much Japanese pension will you actually get.

What happens when you switch?

Every one of these moments changes your category, and each requires a notification that doesn't file itself:

The failure mode is always the same: a gap between jobs where nobody filed, producing months that were owed, unpaid, and unexempted. Those months count for nothing — not toward the ten years, not toward the amount. They're the most expensive kind of month there is, and they're invisible until you check your record.

If money is the reason you can't pay, the answer is never to simply not pay.

What if you can't pay?

Category 1 has formal routes, and the distinction between them is worth more than it first appears.

Exemption (免除) — full or partial, based on income. A fully exempted month counts toward the ten years and at 4/8 of a paid month toward the amount. You get credit for free.

Student special payment (学生納付特例) — for students whose prior-year income is under ¥1.28m plus ¥380,000 per dependent. It defers the premium rather than waiving it.

Payment deferral (納付猶予) — similar, for other low-income cases.

Here's the part that surprises people: 学生納付特例 and 納付猶予 count toward eligibility but add nothing to the amount unless you back-pay. The Japan Pension Service is explicit — 「納付猶予や学生納付特例の期間は年金の受給資格期間として計算されますが、追納しないと年金額には反映されません」. A full exemption gives you half-credit for free; a student deferral gives you none.

Back-payment (追納) closes that gap, within 10 years of the exempted period, with a surcharge if you're more than about three years late. The Japan Pension Service's own figures: back-paying one year restores roughly ¥10,000 of annual pension for a fully exempted year, and roughly ¥20,000 for a student-deferral or payment-deferral year — the difference being that the exempted year already counted at half.

So the order of preference is clear enough: pay, or exempt, or defer — but always file something. Then run what your record actually produces through the Japan Pension Estimator, and see the whole picture in Japan pension for foreigners.

Frequently Asked Questions

Which pension category am I in as a foreigner in Japan?

The same test applies as to anyone else: company employees and civil servants are Category 2, a dependent spouse of a Category 2 earning under ¥1.3m is Category 3, and everyone else aged 20–59 and resident in Japan is Category 1. Nationality is not a factor.

Do students in Japan have to pay the National Pension?

Yes — students aged 20 or over are Category 1 and the premium is due. The 学生納付特例 defers it for those under the income threshold, and that period counts toward the ten-year eligibility test. It adds nothing to your pension amount unless you back-pay within ten years.

Is my spouse automatically Category 3?

Only if you are Category 2. If you are self-employed or otherwise Category 1, your spouse is also Category 1 and owes the premium personally. Being financially dependent in everyday terms does not make someone a 第3号被保険者.

What happens if I don't pay while between jobs?

Those months become unpaid and unexempted, which means they count for nothing — neither toward the ten-year qualifying period nor toward the amount. Applying for exemption or deferral instead preserves eligibility at minimum, and a full exemption also preserves half the value.

Can I pay back missed Japanese pension contributions?

Exempted and deferred months can be back-paid within 10 years, with a surcharge if you're more than roughly three years late. Months that were simply never paid and never exempted generally cannot be recovered that way — which is why filing matters even at zero income.

PlanTogetherFI is for educational planning only. It is not financial, tax or pension advice. Categories, premiums and exemption thresholds change, and your position depends on your employment and household circumstances — confirm with the Japan Pension Service, your municipal office, or a qualified professional.

Sources and further reading

Figures reflect FY2026 (April 2026 – March 2027) and are revised each April. Confirm your own position with the Japan Pension Service.