Documents to Gather Before You Move Back to Japan: What You Can Only Get Abroad

The Documents That Do Not Wait for You

A few document types become genuinely hard to get once you have already left your home country, and those are the ones worth chasing before you board the flight.

Most moving guides list documents by where you use them: at the ward office, at the bank, at the clinic. That framing misses the point for a returnee, because almost everything on a typical list can still be requested by mail or online after you land in Japan. A birth certificate, a copy of a tax return, a bank statement: your home country will still issue these to an address in Japan, just more slowly and with more shipping cost. This article works backward instead. It sorts documents by how hard they become to get once you are no longer standing in front of the office that issues them, so you spend your remaining weeks abroad on the things that genuinely cannot wait.

The pre-move checklist for families bringing an elderly parent to Japan covers the arrival side of a very different move: a family relocating a parent into Japan for the first time, with registration, insurance enrollment, and home safety as the main tasks. This article is written for the other case, a person (often a returning Japanese national or a long-term resident) who is going back to Japan after years overseas, and whose problem is not what to do after landing but what to secure before leaving. The overall sequence, from residence registration through pension and insurance, is mapped in the returning to Japan to retire hub; this piece is the document-gathering step that sits before all of it.

Five categories make up nearly all of the genuinely hard-to-recreate documents: pension and social security records, health and medication records, tax records tied to your last year of foreign income, proof of your driving history, and, if you are bringing a spouse, marriage documents with an apostille or authentication attached. The rest of this article works through each in turn, with what it is for, where you get it, and roughly how long it takes to replace if you forget it.

Pension and Social Security Records

Your contribution history abroad is read by the Japan Pension Service when it decides how your years overseas count toward a Japanese pension, and that reading goes faster if you already have the paperwork in hand.

If you paid into Social Security, a state pension, or another country's public pension system, Japan may credit some of those years toward your Japanese pension eligibility, either through the empty-period rule (kara-kikan) for years abroad as a Japanese national, or through a totalization agreement if your home country has one with Japan. Japan currently has social security agreements in force with a list of partner countries that includes the United States, Germany, the United Kingdom, Canada, Australia, and others; the current list is maintained by the Japan Pension Service. Under the U.S.-Japan agreement, a certificate of coverage or a summary of your U.S. earnings record from the Social Security Administration is the document that lets the Japanese side line up your years correctly, and it is far easier to request while you still have a home-country mailing address and phone number on file with that agency than after you have moved.

Bring your Japanese pension handbook (nenkin techo) or pension number if you have one from earlier years in Japan, since the Japan Pension Service matches records by that number rather than by name alone. If you never had one, or lost it decades ago, expect the reissue process to take longer once you are working through it from a Japanese ward office with a translator rather than by phone in your own language beforehand.

The full mechanics of totalization, kara-kikan, and how the Japan Pension Service actually reads your overseas years are covered in pension when returning to Japan. This section is only about which documents to have in your bag before you go.

Health, Medication, and Vaccination Records

A written medication list and a summary from your treating doctor travel much better than a memory of what you take and why.

Japanese clinics generally cannot look up your overseas chart, and prescriptions abroad rarely map onto the exact brand names available in Japan, so a Japanese doctor has to reconstruct your treatment history from what you bring. A one-page medication list (generic drug names, not just brand names, plus dosage and the condition each one treats), a recent doctor's summary letter, and copies of major test results (imaging, bloodwork, an ECG if relevant) let a new doctor start from your actual history instead of your recollection of it under time pressure at a first appointment.

If you are moving back with an aging parent rather than for yourself, the same logic applies to their file, and it is one of the few things a family cannot easily request after the parent has already left their home clinic behind. The document side of continuing existing prescriptions once you are registered in Japan, including what a Japanese doctor needs to see, is covered separately in continuing prescriptions for chronic conditions in Japan.

Vaccination records are not required by the Japanese government to move or reside in Japan as an adult, but they matter for continuity of care, particularly for anyone managing a chronic illness who will need a new primary doctor in Japan. Bring the record if a clinic has one on file; do not delay your move to chase one down if it does not exist.

Driving History for a License Conversion

Converting a foreign driver's license in Japan (gaimen kirikae) depends on proving you actually lived in the country that issued it for at least three months while holding that license, and that proof is far easier to gather before you leave.

The standard proof is a passport with entry and exit stamps that clearly cover a continuous three-month period after the license was issued. If your passport does not show stamps for that period, which is common for anyone who has been living in a country without exit stamping, Japanese police accept alternative documents such as an official driving history record from the issuing state's motor vehicle agency, utility bills, or employment records covering that window, according to the requirements published by Tokyo's Metropolitan Police Department. Since October 2025, a further rule change also requires the applicant to already hold a valid Japanese Certificate of Residence (juminhyo) to apply, so this is now firmly a document you gather before you leave and a procedure you complete only after you are officially registered in Japan.

Request the official driving history record from your state or provincial licensing agency before departure if your passport will not clearly show the required stay. Doing this from abroad, with your old address and account still active, is materially easier than requesting it as a foreign document once you are back in Japan trying to explain the request in a second language.

If your family's more pressing driving question is not about your own license but about whether an aging parent should still be driving in Japan at all, that is a separate decision covered in the site's guidance on care and driving safety, not in this checklist.

Marriage Documents and Apostilles for a Foreign Spouse

A marriage that took place outside Japan needs to be entered into the Japanese family register (koseki) with an apostilled or authenticated copy of the foreign marriage certificate, and this is one of the slower documents to chase once you have already relocated.

Japan is a member of the Hague Apostille Convention, and an apostille from the country where the marriage certificate was issued is generally the document Japanese authorities and the Ministry of Foreign Affairs recognize, without needing consular legalization on top of it. In practice this means requesting a certified copy of the marriage certificate from the issuing jurisdiction, then routing it through that jurisdiction's apostille authority (often the state's Secretary of State in the U.S.), a process that typically runs from about one to several weeks depending on the state and whether you use expedited mail service.

If you are bringing a foreign spouse into Japan for the first time as part of this move, their own residence status, and everything that follows once they are in Japan without a work history or a Japanese-language medical history, is its own project covered in bringing a foreign spouse back to Japan. This section is only about the paper trail: the apostilled marriage certificate, and if children are involved, apostilled birth certificates, need to be requested from the home country before the move, not after.

Expect a certified translation into Japanese to be required alongside the apostilled original when you present these documents at the ward office. Get the translation done, or at least commissioned, before you leave if you have access to a qualified translator there; sourcing one in Japan adds a step you could have avoided.

Tax Records for Your First Year Back

A copy of your last home-country tax return, or a transcript if the return itself is not readily available, can be the difference between a National Health Insurance premium based on your actual prior income and one assessed with no income information on file at all.

Japan's National Health Insurance premium in your first year back is calculated from the previous year's income as declared to a Japanese municipality. If you were living and working abroad, there may be no Japanese income record for the ward office to work from at all, and municipalities differ in how they handle this gap, so a simplified income declaration (sometimes required to unlock reduced-premium brackets) is worth having supporting paperwork for. A recent tax transcript or return copy from your home country is not itself submitted to the ward office in most cases, but it is the document you will want on hand if the municipality asks you to substantiate your income situation, or if you need it for your own records when reconciling your first Japanese tax filing.

Requesting an official transcript from a home-country tax authority is often the single slowest document on this list if you wait until after the move, since many agencies require a mailing address in the requesting country or restrict phone verification to domestic numbers. Order it before departure even if you do not think you will need it immediately.

The mechanics of the first-year premium assessment itself, and how the reduction brackets work once a declaration is on file, sit in a separate article on this site's returning-to-Japan cluster; this section only flags the tax document you need in hand before you go.

Rank by What You Cannot Recreate, Not by What Feels Urgent

The documents worth prioritizing in your last weeks abroad are the ones where an alternative simply does not exist once you have left, not the ones that merely feel important.

A common mistake is to spend the final weeks before a move focused on documents that feel weighty, like a full set of financial statements, while leaving behind a driving history record or an apostille request that is genuinely difficult to obtain by mail. Use the "cannot recreate" test: if the document depends on your physical presence, your ability to walk into an office, or a phone number and address that only exists while you are still there, move it to the top. If it can be requested by mail or downloaded from an online portal from Japan just as easily, it can wait.

By that test, driving history proof and an apostilled marriage certificate usually sit at the top, since both depend on jurisdiction-specific processes that assume you are still resident there. Pension and Social Security documentation sits close behind, not because it is impossible to request from Japan, but because processing takes weeks and the Japan Pension Service review moves faster with the paperwork already in hand. Tax records and medical summaries can generally be requested after the move if you have to, though at real cost in time and shipping.

Building a simple list before you leave, one line per category with a done or not-done column, catches the gap earlier than trying to remember five separate agency processes under the stress of a move. If you are moving back with, or ahead of, an aging Japanese parent, the family logistics of that move, including which documents belong to the parent rather than to you, are handled in repatriating an aging Japanese parent.

None of this replaces professional guidance for the harder edge cases: a lapsed permanent residence status, a complicated pension record spanning several countries, or a marriage that took place under another country's civil law with unusual documentation. Those situations generally call for an immigration lawyer, an administrative scrivener (gyoseishoshi), or direct contact with the Japan Pension Service rather than a general checklist.

• Pension/Social Security: request a certificate of coverage or earnings record before departure if you contributed abroad
• Driving: pull an official driving history record if your passport will not clearly show three continuous months of residence with the license
• Marriage: start the apostille request early; it is jurisdiction-bound and often the slowest item on this list
• Medical: get a written medication list and a doctor's summary letter, not just your memory of your treatment
• Tax: order a transcript or return copy from your home country before you lose easy access to request it