Japan Pension (Nenkin) for Expats: Lump-Sum Withdrawal & Totalization

Japan's lump-sum pension withdrawal payment (脱退一時金, dattai ichijikin) allows foreign nationals who have contributed to the employees' pension system (厚生年金) to recover a portion of their contributions when they leave Japan permanently. Non-Japanese nationals who contributed for at least six months can apply within two years of departing Japan, receiving a payment covering up to 60 months of contributions. The payment amount is calculated based on the average Standard Monthly Remuneration during the contribution period, multiplied by a rate factor corresponding to the number of months contributed. For expatriates on multi-year assignments, the lump-sum withdrawal—combined with Japan's 23 totalization agreements—is a critical factor in managing the net cost of Japan-based compensation.

Eligibility Requirements

The lump-sum pension withdrawal is available to foreign nationals who meet all four conditions at the time of application. Japanese nationals are not eligible for this payment regardless of whether they reside overseas.

• Non-Japanese nationality—the applicant must hold foreign citizenship. Dual citizens holding Japanese nationality are not eligible.
• Minimum six months of pension contributions—the applicant must have been enrolled in Japan's employees' pension (厚生年金) or National Pension (国民年金) for at least six months.
• No longer residing in Japan—the applicant must have deregistered their Japanese address (転出届) and departed Japan. The application is submitted from overseas after departure.
• No existing pension entitlement—the applicant must not have qualified for a Japanese retirement or disability pension. The minimum qualification period for a retirement pension is 10 years, so expats with fewer than 10 years of contributions who are not covered by a totalization agreement can claim the withdrawal.

According to the Japan Pension Service, the lump-sum withdrawal system processes tens of thousands of applications annually, with the majority coming from employees of foreign companies who completed multi-year assignments in Japan.

Calculating the Lump-Sum Withdrawal Amount

The payment amount depends on the average Standard Monthly Remuneration (SMR) during the contribution period and the number of months contributed, up to a maximum of 60 months.

Contribution Period	Rate Factor	Example: Avg SMR ¥300,000	Example: Avg SMR ¥500,000
6–11 months	0.5	¥150,000	¥250,000
12–17 months	1.1	¥330,000	¥550,000
18–23 months	1.6	¥480,000	¥800,000
24–29 months	2.2	¥660,000	¥1,100,000
30–35 months	2.7	¥810,000	¥1,350,000
36–41 months	3.3	¥990,000	¥1,650,000
42–47 months	3.8	¥1,140,000	¥1,900,000
48–53 months	4.4	¥1,320,000	¥2,200,000
54–59 months	4.9	¥1,470,000	¥2,450,000
60 months (maximum)	5.5	¥1,650,000	¥2,750,000

The formula is: Average SMR × Rate Factor = Gross Lump-Sum Payment. The rate factor approximates a refund of the employee's own contribution portion (9.15% of SMR per month) without interest. An employee who contributed at an average SMR of ¥410,000 for 36 months would receive approximately ¥410,000 × 3.3 = ¥1,353,000 before tax. The employer's matching 9.15% contribution is not refundable—it remains in the pension fund.

The maximum of 60 months means that employees who work in Japan for more than five years without a totalization agreement will forfeit contributions beyond the 60-month cap. For a five-year assignment at ¥500,000 average SMR, the gross refund of ¥2,750,000 represents recovery of approximately 50% of the employee's total personal contributions (¥500,000 × 9.15% × 60 = ¥2,745,000), demonstrating that the refund roughly returns the employee's own payments.

Application Process

The lump-sum withdrawal application is submitted by mail from overseas after the applicant has left Japan. The process requires careful preparation before departure to avoid delays.

Before Leaving Japan

• Obtain your pension book (年金手帳) or Basic Pension Number notification—this confirms your pension number (基礎年金番号) and contribution history
• Confirm your contribution period—request a contribution history statement (被保険者記録照会回答票) from the Japan Pension Service to verify the exact number of months
• Consider appointing a tax representative—a tax representative (納税管理人) in Japan can file for recovery of the 20.42% income tax withheld from the lump-sum payment
• Submit a Moving Out Notification (転出届)—deregister your Japanese address at the municipal office before departure
• Open or confirm an overseas bank account—the Japan Pension Service can transfer payments to bank accounts in most countries

After Leaving Japan

Submit the application package to the Japan Pension Service by mail within two years of departure. Required documents include:

• Lump-Sum Withdrawal Payment Claim Form (脱退一時金裁定請求書)—available on the Japan Pension Service website
• Copy of passport showing the departure stamp or immigration record
• Pension book or document showing the Basic Pension Number
• Document confirming the overseas bank account (account name, number, SWIFT code, bank name and address)
• Copy of the residence card (在留カード) or a document showing the applicant has left Japan

The Japan Pension Service processes applications within approximately two to four months. Payment is made by international bank transfer to the designated overseas account. The payment is denominated in Japanese yen, and the receiving bank converts it to local currency. Processing time may be longer for applications with incomplete documentation or unusual circumstances.

Tax Implications of the Lump-Sum Withdrawal

The lump-sum withdrawal payment is classified as “retirement income” (退職所得) under Japanese tax law and is subject to a 20.42% withholding tax (20% income tax + 0.42% reconstruction special income tax) at the time of payment. This withholding is deducted automatically by the Japan Pension Service.

The withheld tax can be partially or fully recovered by filing a non-resident tax return (退職所得の選択課税) through a tax representative (納税管理人) appointed in Japan before departure. The tax return recalculates the tax liability using the retirement income deduction formula, which often results in a lower effective tax rate than the flat 20.42% withholding. For contributions of three years or less, the entire withholding may be recoverable. For longer contribution periods, the recovery amount depends on the total payment size and applicable deductions.

Appointing a tax representative before departure is essential for maximizing the net refund. The representative can be an individual (such as a colleague or friend in Japan) or a professional (tax accountant or back office service provider). Without a tax representative, the 20.42% withholding becomes the final tax, and no recovery is possible after departure. As covered in the social insurance guide, coordinating the pension withdrawal with other end-of-service tax filings ensures comprehensive handling of Japan departure obligations.

Totalization Agreements: The Alternative to Withdrawal

Japan has signed social security totalization agreements with 23 countries that can eliminate the need for Japanese pension contributions entirely. Under these agreements, employees posted to Japan for less than five years from a partner country can remain covered under their home country's pension system.

Country	Covers Pension	Covers Health Insurance	Max Exemption Period
United States	Yes	No	5 years
United Kingdom	Yes	No	5 years
Germany	Yes	Yes	5 years
France	Yes	Yes	5 years
Australia	Yes	No	5 years
Canada	Yes	No	5 years
South Korea	Yes	No	5 years
China	Yes	No	5 years
India	Yes	No	5 years

To use a totalization agreement, the employee must obtain a Certificate of Coverage (適用証明書) from their home country's social security authority before or shortly after arriving in Japan. The certificate is presented to the Japanese employer, who then excludes the employee from pension enrollment (and health insurance, if the agreement covers it). Without the certificate, the employer must enroll the employee in Japanese pension and the employee's only option for recovering contributions will be the lump-sum withdrawal.

Totalization agreements also allow contribution periods in both countries to be combined when determining eligibility for retirement benefits. An employee with 7 years of contributions in Japan and 8 years in the US can combine the periods to meet Japan's 10-year minimum for a pension benefit, potentially making it more advantageous to keep the Japanese pension credit rather than claiming the lump-sum withdrawal.

Decision Framework: Withdraw or Keep Pension Credit

The decision to claim the lump-sum withdrawal versus retaining Japanese pension credit depends on several factors specific to each employee's situation.

• Claim the withdrawal if: The employee has fewer than 10 years of Japanese pension contributions, has no totalization agreement or combined-period benefit path, and does not plan to return to work in Japan.
• Keep the pension credit if: The employee has a totalization agreement allowing combined periods to reach Japan's 10-year minimum, plans to return to Japan for additional work, or has already exceeded 10 years of contributions and qualifies for a retirement pension.
• Use a totalization agreement if: The assignment is under five years, the home country has an active agreement with Japan, and the employee can obtain a Certificate of Coverage before arrival.

For foreign companies managing expatriate assignments to Japan, advising employees on the pension withdrawal decision before departure ensures they prepare the necessary documentation (tax representative appointment, bank account details, contribution records) while still in Japan. The health insurance and pension enrollment guide covers the initial enrollment process that determines how contributions accumulate during the assignment.

The pension system is the most financially significant component of Japan's social insurance framework for expatriate employees. Whether through totalization agreements, lump-sum withdrawal, or retirement benefit planning, foreign companies should incorporate pension strategy into their overall Japan assignment planning. AQ Partners manages pension enrollment, contribution tracking, lump-sum withdrawal applications, tax representative services, and totalization agreement coordination for foreign companies and their expatriate employees. Contact us at hello@aqpartners.jp.