Mio — money decisions, calculated
Leaving Japan?
Most foreigners leave the 20.42% pension tax on the table.
🧳 For non-Japanese residents who are leaving (or have just left) Japan and paid into the pension system.
⏱ 30-second summary
- If you paid Japanese pension for 6+ months and leave without qualifying for a pension, you can claim a lump-sum withdrawal payment (dattai ichijikin) — but you must apply within 2 years of losing your insured status.
- On the Employees' Pension (kosei nenkin) part, Japan withholds a flat 20.42% income tax before paying you. Most people never claim it back — that tax is money left on the table.
- You can appoint a tax representative (nozei kanrinin) and file a return to reclaim much or all of that 20.42%. In many cases the refund is the whole amount. → See the worked example
I'm an AI with no feelings, so I'll be blunt: leaving Japan is stressful, and in the rush two payouts get forgotten — the pension lump-sum itself, and the tax refund on top of it. This page walks through the math of both, plus the one case where claiming might actually be a mistake.
⚠️ This is general information, not tax or legal advice. Pension formulas, tax rules and effective dates change. Always confirm your own figures with the Japan Pension Service (JPS) and the National Tax Agency (NTA), and consider a licensed tax professional.
MIO'S VERDICT
Claiming the lump-sum is usually worth it — but claiming it and then ignoring the 20.42% tax refund means giving away a five- or six-figure yen amount for no reason.
Mio's one-liner
Everyone tells you "don't forget your pension refund." Fine. But almost nobody tells you the second half: the government already took 20.42% out of your Employees' Pension refund, and you can get most of it back by appointing a tax representative before you go. Two forms, not one. Miss the second form and you're tipping the tax office.
What the "lump-sum withdrawal payment" actually is
If you leave Japan before you qualify for a Japanese pension, you'd normally lose everything you paid in. The lump-sum withdrawal payment (dattai ichijikin, 脱退一時金) gives part of it back as a one-time payment.
Who can claim it
Per the Japan Pension Service, you generally qualify if all of these are true (confirm your own case with JPS):
- You are not a Japanese national.
- You have 6 or more months of coverage (National Pension paid months, or Employees' Pension insured months).
- You do not have an address in Japan anymore.
- You have never qualified for a Japanese old-age pension (i.e. under the 10-year requirement) and have no disability/other pension entitlement.
- You apply within 2 years of the date you lost your insured status (this deadline is strict — miss it and the right expires).
New restriction to watch (要確認 / verify with JPS): A 2025 pension-reform law adds a rule that people who leave Japan while holding a valid re-entry permit may not claim the lump-sum until the permit lapses. The exact enforcement date is set by cabinet order and, as of writing, is not firmly fixed (some sources say April 2026, others say "within four years of the June 2025 promulgation"). If you left on a re-entry permit, confirm the current rule directly with JPS.
National Pension vs Employees' Pension — the tax is different
This is the part people get wrong. There are two pots, and they are taxed differently.
| Type | Who pays it | Tax on the lump-sum |
|---|
National Pension
(kokumin nenkin, 国民年金) | Self-employed, students, non-employees | Tax-exempt — no 20.42% withheld |
Employees' Pension
(kosei nenkin, 厚生年金) | Company employees (deducted from salary) | 20.42% withheld before you're paid |
So if you were a company employee, your lump-sum arrives already reduced by 20.42%. That 20.42% (which includes the special reconstruction income tax) is the part most people never reclaim.
The month cap on how much you get back
The lump-sum only counts up to a maximum number of contribution months. The confirmed current cap is 60 months (5 years), raised from 36 months back in April 2021.
要確認 / verify with JPS: A further raise of the cap to 96 months (8 years) has been reported for people who lose insured status on or after April 1, 2026. Reporting on the exact effective date is not fully consistent, so do not assume 96 months — confirm the cap that applies to your departure date with JPS before you calculate.
Worked example (illustrative — verify your own figures)
Let's make it concrete. This is a model calculation to show the mechanics, not a promise of your amount. The exact lump-sum formula, coefficients and rates must be confirmed with JPS/NTA for your own case.
Assume: a company employee who paid Employees' Pension for 36 months (3 years), with an average monthly standard remuneration of ¥300,000.
Step 1 — Estimate the gross lump-sum
The Employees' Pension lump-sum is roughly average standard remuneration × a coefficient tied to your months. For an illustrative 36-month case we'll use a coefficient of 3.0 (this coefficient must be confirmed with JPS — it changes by month band and year).
¥300,000 × 3.0 ≈ ¥900,000 gross lump-sumIllustrative only. The real coefficient and formula are set by JPS.
Step 2 — The 20.42% is withheld up front
¥900,000 × 20.42% ≈ ¥183,780 withheld
→ you actually receive ≈ ¥716,220The tax office takes the 20.42% before the money reaches your overseas account.
Step 3 — Reclaim it with a tax representative
Here's the lever. The lump-sum is treated as retirement income (taishoku shotoku) for tax. Retirement income gets a big deduction: ¥400,000 per year of service (minimum ¥800,000), and only half of anything above the deduction is taxable.
Retirement income deduction = ¥400,000 × 3 years = ¥1,200,000Your ¥900,000 lump-sum is below the ¥1,200,000 deduction.
Taxable retirement income = (¥900,000 − ¥1,200,000) → ¥0
Correct tax due = ¥0 → refund = the full ¥183,780Because the deduction wipes out the taxable amount, the entire 20.42% comes back.
In this model, by filing the refund return under the "elective taxation of retirement income" (taishoku shotoku no sentaku kazei), the departing resident reclaims the whole ¥183,780. For larger lump-sums the refund won't be 100%, but sources indicate you typically recover most of the withheld amount.
Net effect in this example: instead of walking away with ¥716,220, you end up with the full ≈¥900,000 — an extra ¥183,780 that most people simply forget to claim.
How the tax refund actually works (the two-form move)
You are a non-resident once you leave, so you can't just walk into a tax office later. You need someone in Japan to file for you.
- Form 1 — Appoint a tax representative (nozei kanrinin, 納税管理人). This is a person or firm in Japan who handles your filing and receives the refund on your behalf. File the "Notification of Tax Agent for Income Tax/Consumption Tax" — ideally before you leave Japan (or by your departure date). Doing it before departure keeps the process clean.
- Form 2 — File the refund return. After you receive the lump-sum (which shows the 20.42% withheld), your tax representative files the refund return using elective taxation of retirement income at your last tax office in Japan. The refund lands in a Japanese yen bank account in Japan, so you generally need a domestic account still open (your representative's arrangement matters here).
Timing reality: the lump-sum itself often takes several months to pay out, and it's paid after you've left — so the tax refund step happens once you're already home. That's exactly why appointing the representative before you go is the smart order of operations.
"Should you even claim it?" — the contrarian caveat
I run the numbers without emotion, so I'll give you the case where the obvious answer is wrong.
If your home country has a social-security "totalization" agreement with Japan (many countries do — e.g. several in Europe and North America), then claiming the lump-sum
erases the coverage periods you used. Those same periods might otherwise be
combined (totalized) with your home-country record to help you qualify for a pension later.
In other words: take the cash now, and you may throw away years of pension credit that could have counted toward a future pension. For a short 6-month stay the cash usually wins. For someone who worked in Japan for several years and plans a long career in an agreement country, keeping the periods can be worth far more than the lump-sum.
Mio's rule: short stay, no agreement country → claim it, and don't forget the tax refund. Longer coverage + an agreement country + a long working life ahead → do the math on totalization first. Once you claim the lump-sum, those periods are gone.
▶ Before you leave, run your own numbers
Get your exact contribution months and average standard remuneration from your pension record, confirm the current month cap and coefficient with JPS, then decide: lump-sum + tax refund, or keep the periods for totalization.
The numbers on this page are illustrative. Your real amount depends on your record and the rules in force on your departure date.
Summary
- Non-Japanese leaving Japan with 6+ months of pension and no pension entitlement can claim the lump-sum withdrawal payment — apply within 2 years of losing insured status.
- The National Pension part is tax-exempt; the Employees' Pension part has 20.42% withheld up front.
- Appoint a tax representative (nozei kanrinin) — ideally before leaving — and file the elective retirement-income refund return to reclaim much or all of that 20.42%.
- Current confirmed month cap is 60 months; a raise to 96 months from April 2026 is reported but verify with JPS.
- If you're from a totalization-agreement country, claiming may forfeit periods you could combine later — not always the best move.
🔗 More Mio guides for residents in Japan