Japan Pension Lump-Sum Withdrawal for Foreign Workers — How to Claim Dattai Ichijikin When Leaving Japan

If you've worked in Japan for at least six months, your monthly salary slip has been showing pension contributions — sometimes ¥15,000, ¥20,000, ¥30,000 or more every month. When you leave Japan without reaching the 10 years required to qualify for a Japanese pension, you can claim much of that money back as the pension lump-sum withdrawal.

This guide explains exactly how the lump-sum withdrawal works in 2026: who qualifies, how the amount is calculated (and capped at 60 months), the 20.42% income tax that gets withheld and how to recover it via a tax representative, what documents to collect, the strict 2-year deadline, and the cases where you should think carefully before claiming.

What Is Dattai Ichijikin?

Dattai ichijikin literally means "withdrawal lump-sum payment". It is a partial refund of the pension contributions paid by foreign workers who leave Japan before qualifying for a Japanese pension. It applies to both:

• Employees' Pension — the employer-based pension that full-time SSW, engineers, technical interns, and similar workers pay into.
• National Pension — the flat-rate pension for self-employed people, students, and others not in employer pension.

Dattai ichijikin gives you back a meaningful but not full portion of what you contributed. It is intended for short- and medium-term foreign workers who will not reach the 10-year qualification threshold for a Japanese pension.

Who Qualifies and Who Doesn't

To qualify for dattai ichijikin you must meet all of the following:

1. You are not a Japanese national.
2. You paid into Japanese pension (employees' pension and/or national pension) for at least 6 months in total.
3. You do not currently hold a Japanese address (your jumin-hyo / residence registry record has been removed).
4. You are not entitled to a Japanese pension (i.e., you did not reach 10 years of total coverage, and no social security agreement with your country lets you combine years to reach the Japanese pension threshold).
5. You apply within 2 years of leaving Japan.
6. You have not already received a dattai ichijikin for the coverage period in question. Each claim covers all of your insured periods up to that point and, once paid, permanently erases them from your record. A second claim is only possible if you later return to Japan, contribute again, and leave again — creating a new, separate coverage period.

You do not qualify if:

• You're still in Japan as a resident.
• You qualify for a Japanese pension (10+ years of coverage or eligible totalization).
• You're applying more than 2 years after leaving Japan.
• You have previously received the lump-sum for the relevant period.

How Much Will You Get — The 60-Month Cap

The amount of dattai ichijikin is calculated differently for Employees' Pension and National Pension:

Employees' Pension lump-sum

For employees' pension contributors, the formula is roughly:

(Average standard remuneration during the contribution period) × (Coefficient based on the number of months contributed)

The coefficient is graded by months contributed, currently capped at 60 months (5 years). So if you contributed for 7 or 8 years, the lump-sum is currently calculated as if you contributed only 60 months — you do not get a higher payout for the extra years beyond the cap. Upcoming change: the pension reform law promulgated in June 2025 will raise this cap from 60 months (5 years) to 96 months (8 years), reflecting longer combined stays expected as workers move through Ikusei Shuro to SSW. The effective date will be set by Cabinet order and, as of mid-2026, has not yet been fixed; until then, the 60-month cap continues to apply. (Note: some online sources incorrectly state this began in April 2026 — that is not confirmed.)

So a worker with an average standard remuneration of ¥200,000 who contributed for 60 months (5 years) would receive approximately ¥200,000 × 5.5 = ¥1,100,000 (gross), before tax. After the 20.42% withholding, about ¥875,000 in the bank initially; the ¥225,000 withheld can be recovered via tax representative (see below).

The 60-month cap was extended from the prior 36-month cap a few years ago, which significantly increased the maximum payout. Workers who contributed for longer than 5 years should keep a copy of their pension record (Nenkin Net) so the cap is applied correctly.

National Pension lump-sum

If you were paying National Pension (rather than Employees' Pension), the amount is calculated by a fixed formula: the monthly National Pension premium for the year of your last payment × 1/2 × a graded number based on months contributed (capped at 60 months). The Japan Pension Service publishes a specific amount table for each fiscal year — check the current table for your exact figure rather than relying on an estimate.

The 20.42% Withholding Tax — And How to Recover It

When the Japan Pension Service pays out the Employees' Pension lump-sum, Japan automatically withholds 20.42% income tax at source. (The National Pension lump-sum is not subject to this withholding.) On a ¥1,100,000 gross Employees' Pension lump-sum, ¥224,620 is withheld — you receive about ¥875,380 in the bank.

The good news: you may be able to recover most or all of the 20.42% by filing a refund application under the "selective taxation as retirement income" procedure through a tax representative in Japan. This is a special procedure — not an ordinary tax return — because the Employees' Pension lump-sum is treated as deemed retirement income.

Mechanics:

1. Before leaving Japan, file a "Notification of Tax Representative" with the tax office for your address. The tax representative is a Japan-resident individual or company that handles your tax filings on your behalf after you leave.
2. After receiving the lump sum, your tax representative files a refund application under the "selective taxation as retirement income" procedure, using the Lump-Sum Payment Notification and other required documents. The retirement income deduction (based on your years of coverage) is the main mechanism that makes most or all of the withheld tax refundable.
3. Because the Employees' Pension lump-sum is treated under retirement-income taxation when the proper election is made, the retirement income deduction (based on years of coverage) applies, and the final tax is usually much lower than the 20.42% withheld at source. Note: the basic deduction was raised from a flat ¥480,000 to ¥580,000–¥950,000 by the 2025 tax reform, but the retirement income deduction is the main mechanism driving the refund.

In many cases, most or all of the withheld tax is refunded, though the exact amount depends on the size of the lump-sum and the retirement income deduction available for your years of coverage. A residual tax liability can remain for larger lump-sums. This is still meaningful money: in the ¥1,100,000 example above, recovering the bulk of the withholding can be the equivalent of nearly an extra month of Japanese take-home pay.

Before You Leave Japan — Critical Steps

Do these in the final 2–4 weeks before you leave:

How to Claim — Step by Step

After you have left Japan and your residence registry is closed:

Documents You Need

• Lump-sum Withdrawal Payments Claim Form (completed and signed)
• Copy of your passport: name, date of birth, nationality, signature, and the latest exit stamp from Japan
• Document proving you no longer have a Japanese address: often satisfied by a copy of your residence card with the back side showing your address or your moving-out notification receipt
• Bank information for payment: bank name, branch, account number, account holder name, SWIFT/BIC if overseas. Some banks require an additional declaration form.
• Basic Pension Number documentation: not strictly required if the form is filled in correctly, but recommended
• Your most recent address in Japan for cross-reference (your former employer can provide a confirmation if requested)

Employees' Pension vs National Pension

Your lump-sum amount depends on which pension you paid into:

• Employees' Pension (Kousei Nenkin): paid by full-time employees of qualified employers (most SSW, engineers, technical interns). The lump-sum is based on your average standard remuneration (your actual salary) times the months-graded coefficient (capped at 60). The lump-sum is subject to 20.42% withholding, which can be largely recovered.
• National Pension (Kokumin Nenkin): paid by self-employed, students over 20, and others not in employer pension. The lump-sum is a fixed schedule based on months contributed (capped at 60). No 20.42% withholding applies.
• If you switched between the two during your stay in Japan, you can claim the lump-sum for both, calculated separately.

Social Security Agreements — A Key Decision

If your home country has a social security agreement with Japan, you face a choice:

• Take the dattai ichijikin now — cash in hand, simple, but you give up your Japan pension years.
• Skip the lump-sum and let your Japan years count toward a pension in either country — potentially more total benefit over your lifetime, especially if you have many Japan years.

Once you claim dattai ichijikin, the corresponding contribution period is permanently erased from your Japan pension record. You cannot get those years back if you later move back to Japan or want to use them in your home country.

Countries with social security agreements in force with Japan, as of December 2025, are these 24: Germany, the UK, the United States, Korea, France, Belgium, Canada, Australia, the Netherlands, Czech Republic, Spain, Ireland, Brazil, Switzerland, Hungary, India, Luxembourg, the Philippines, Slovakia, China, Finland, Sweden, Italy, and Austria (Austria most recently, in force from December 1, 2025). Note: the agreements with the UK, Korea, China, and Italy cover only avoidance of double premium payment, NOT combining of coverage periods for pension qualification. Always check the latest country-specific status from the Japan Pension Service.

Countries without an agreement in force (as of 2026) include: Vietnam, Indonesia, Myanmar, Nepal, Cambodia, Mongolia, Sri Lanka, Bangladesh, and many others. Workers from these countries often consider dattai ichijikin if they leave Japan without qualifying for a Japanese pension, but the best choice depends on future plans and pension record. (Note: Japan and Vietnam began government-level negotiations on a social security agreement in 2025; an agreement is under discussion but not yet in force.)

If your country has an agreement and you have several years of Japan contributions, talk to a tax/pension advisor before claiming the lump-sum — in some cases, especially if you'll return to Japan or work for an internationalised employer, keeping the years is more valuable than the lump-sum.

Common Mistakes to Avoid

• Forgetting to appoint a tax representative before leaving Japan. This is the single most common mistake. The 20.42% withholding becomes very hard to recover without one.
• Missing the 2-year deadline. The application must be received by the Japan Pension Service within 2 years of your departure. Mail times count against you.
• Forgetting to file moving-out notification. Your residence registry must be closed; otherwise the application may be rejected.
• Claiming with fewer than 6 months of contributions. The 6-month minimum is strict.
• Closing all your Japanese bank accounts too early. Many workers find overseas remittance options work, but a Japanese account can be simpler.
• Inconsistent name between passport and pension record. If you changed your name during your stay in Japan, attach proof of the change.
• Trusting unofficial agents who charge huge fees. The application is straightforward enough that most workers, with an English-language form and a tax representative, can do it themselves. Beware of agents offering to "help" for a percentage of the lump-sum.

After You Claim — What Happens to Your Record

Once you receive the lump-sum, the corresponding months of pension coverage are removed from your Japan pension record. If you later return to Japan and start working again, you start your pension contributions fresh, and the years you cashed out do not count.

If you only claim for some periods (e.g., you had two stints in Japan and only claim for the first), the unclaimed period stays on your record. This is rare but possible.

If you ever apply for permanent residence in Japan in the future, the lump-sum withdrawal in itself does not block your application, but you do start your Japan pension contributions from scratch.

Frequently Asked Questions

Summary

The pension lump-sum withdrawal is one of the most underclaimed entitlements among foreign workers leaving Japan. Done right — with a tax representative appointed before departure, residence registry properly closed, documents organized — you can recover a meaningful sum, often equivalent to several months of Japanese salary. Don't leave that money behind. If your country has a social security agreement with Japan and you have many years of contributions, think carefully before claiming — the long-term pension might be worth more than the lump-sum. Either way, plan the decision before you board your flight home.