Japan Pension Contributions: Fuka, Back Payments & Exemptions

Start with your insured category and any available exemption. An extra contribution is worth comparing only after checking the record, required payments and money needed for living costs. Fuka adds a separate benefit; tsuino pays approved past exempt or deferred periods.

The current National Pension premium

The standard premium is ¥17,920 a month for April 2026–March 2027. This current rate cannot price historical back payments or identify your insured category. 日本年金機構 · 国民年金保険料の変遷.

Check the new childcare exemption first

From October 2026, qualifying Category 1 parents caring for a child under one can apply for a childcare-period premium exemption. The period counts as paid for old-age basic pension. Confirm the covered months, care/residence conditions and any maternity overlap; voluntary insured people are outside this exemption. Where this may apply, check it before budgeting an optional additional payment. 日本年金機構 · 2026年10月からの育児免除.

Fuka nenkin: what an extra ¥400 a month does

For a standard claim at 65, each paid month adds ¥200 to the annual pension. Twelve months cost ¥4,800 at the standard premium and add ¥2,400 a year. That is two years of gross extra pension after it starts; it excludes taxes, advance-payment discounts and the waiting period. The additional pension is not price-indexed. 日本年金機構 · 付加年金の計算と物価.

Fuka is for Category 1 insured people and voluntary insured people under 65. National Pension Fund membership excludes it. Income-based exemptions, deferral and student special payment exclude it, but approved maternity and childcare exemptions have specific allowances for Fuka. If you contribute to iDeCo, confirm room under the combined limit. Enrollment starts from the application month, not earlier months. 日本年金機構 · 付加保険料の納付; 日本年金機構 · 2026年10月からの育児免除.

Compare Fuka contributions →

Tsuino: compare the actual back-payment quote

Approved exempt, deferred or student periods may generally be repaid within ten years. Partial exemptions require the remaining portion to have been paid; older periods may carry a surcharge. Existing old-age basic pension entitlement can also prevent repayment. The pension added depends on the type of period. 日本年金機構 · 国民年金保険料の追納制度.

1. Get the eligible months and payment amount from Nenkin Net.
2. Compare official pension forecasts with and without that payment, keeping future work and contribution assumptions the same.
3. Enter the total quote and the annual difference, not total pension income, in the calculator.
4. Check the deadline, possible tax deduction and affordability before deciding whether to pay.

Compare a quoted back payment →

What about health or private insurance?

This guide covers statutory pension contributions. It does not calculate health/employment insurance premiums or recommend private insurance. Additional pension payments do not replace obligations under other insurance schemes.

Questions before you pay

What if I cannot afford the normal premium?

Check official exemption or deferral routes first. An approved exemption and an unpaid record are different. 日本年金機構 · 免除・納付猶予.

Does two-year payback mean a guaranteed investment return?

No. It compares fixed nominal premiums with gross additional pension once received. Eligibility, when benefits start, taxes and future circumstances still matter.