No calls. No meetings. Everything in writing.
Your Japanese tax return, handled entirely by email.
Prepared, signed and filed by a licensed Japanese CPA and tax accountant. You write in English, and every reply comes back in written English.
For individuals only. Fees start at ¥97,500 (¥107,250 with consumption tax).
Please note: Our tax accountant does not speak English. We work in writing only and do not offer phone or video calls. We write to you in English and handle the translation on our side.
- CPA No. 43196 / Licensed Tax Accountant No. 151214Tokyo Certified Public Tax Accountants' Association
- Prepared and signed by a licensed professionalYour return is filed under a licensed tax accountant's signature.
- Mitsumore 4.9 (101 reviews)As of October 5, 2026, for our Japanese-language service. Reviews from clients on Mitsumore, a Japanese service marketplace.
- Individuals only, Japanese tax onlyWe do not handle company returns or foreign tax returns.
Who we help
We prepare Japanese tax returns for individuals, in Japan and overseas. Start with the page that fits you.
Employees with RSUs and stock pay
You work in Japan and receive RSUs, ESPP shares or stock options from an overseas parent company.
See how it worksProperty owners living overseas
You live abroad and you are selling or renting out property in Japan.
See how it worksPeople leaving Japan
You are moving out of Japan this year, or you have just left.
See how it worksOther situations we handle
Pick the one closest to you and see your fee.
Freelance and side income
You run a business, or you earn side income on top of your salary.
Get your feeOverseas income and assets
You have foreign income or investments, and you may need the foreign tax credit.
Get your feeTwo employers, refunds and deductions
You have two employers, you left a job mid-year, or you want to claim a deduction.
Get your feePast returns not filed
You missed a filing year and you want to put it right.
Get your feeNot a fit
We are not the right service for:
- Companies
- Foreign tax returns, such as US Form 1040
- Visa applications
- Pension or social security procedures
- People who want a phone or video call
Do you need to file?
Most employees in Japan do not file. The year-end adjustment (nenmatsu chosei) at work settles their tax. You usually need a final tax return (kakutei shinkoku) if one of these applies:
- Your salary is more than ¥20 million a year.
- You have one employer, and your income other than salary is more than ¥200,000.
- You have two or more employers, and your other pay and other income total more than ¥200,000.
- You received RSUs, stock options or other pay that is not on your withholding slip (gensen choshuhyo).
- You made a gain on shares sold through an overseas broker, or through an account that does not settle tax for you. For employees, the ¥200,000 test above still applies.
- You are self-employed, and your income is more than your deductions.
- You rent out or sold property in Japan, even if you live abroad. For employees, the ¥200,000 test above still applies.
- You are leaving Japan, and one of the points above applies to you.
These are the main cases, not a full list. You can also file to claim a refund, for example if you left a job mid-year or had large medical costs.
The filing period is February 16 to March 15, 2027. Tax is due by March 15, 2027. A refund return can be filed for five years from January 1 of the following year.
For more detail, read Do Foreigners Need to File a Tax Return in Japan?
Why we work by email
A tax return is written work. We built this service around that fact.
Everything stays in writing.
Every question, document request and decision stays in your inbox.
Any time zone.
Reply from London, Sydney or San Francisco whenever suits you. There is no meeting to schedule.
Read at your own pace.
Reread an explanation, look up a term, or forward it to your spouse, HR or home-country accountant.
You can check our English.
The Japanese original sits under the English in every email, so a Japanese-speaking colleague or your own translator can compare them.
We aim to reply within two business days, Japan time.
What it costs
These are the fees for our English-language service. Your fee depends on your income and documents, not your nationality.
| Example | Fee |
|---|---|
| Minimum fee, such as salary only | ¥97,500¥107,250 with tax |
| Salary and ¥10 million of RSU income | ¥135,000¥148,500 with tax |
| Salary, ¥10 million of RSU income, and shares sold through an overseas broker | ¥178,500¥196,350 with tax |
| Salary and ¥10 million of overseas income | ¥129,000¥141,900 with tax |
| Business with ¥5 million in sales | ¥121,500¥133,650 with tax |
| Living overseas, ¥3 million of rent from one property | ¥100,500¥110,550 with tax |
| Living overseas, property sold for ¥50 million | ¥195,000¥214,500 with tax |
Your fee depends on your documents. Consumption tax is included in the second figure. These fees are for your return only. If we act as your tax agent, that fee is ¥60,000 per year (¥66,000 with consumption tax). We confirm your fee by email after we review your documents. If an extra fee is needed, we explain it first. These are regular fees. If you apply by December 31, 2026, you get 10% off, down to the minimum fee.
How it works
Six steps, all in writing.
-
Get a free written quote
Send us your details. We aim to reply in written English within two business days, Japan time. The quote covers our fee and the documents we need. Answers about your own tax position come after you engage us.
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Sign the engagement letter
You review the terms and sign. We then start work on your return.
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Upload documents
We send you a checklist and a secure upload folder. If something is missing, we ask by email.
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Review the English summary
Before filing, we send you a written English summary of your return. You check it and approve it.
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We file
We sign your Japanese return and file it with the National Tax Agency (NTA).
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Receive your copies
We send you copies of the filed return. We also tell you in writing what to pay, or what refund to expect, and by when.
What you receive
- A free written quote before you decide
- A document checklist and a secure upload folder
- A written English summary of your return before filing
- Your Japanese tax return, prepared and signed by a licensed tax accountant
- Copies of the filed return
- Written notice of what to pay, or what refund to expect, and by when
Who prepares your return
Yuma Komatsu
Certified Public Accountant (No. 43196) and Licensed Tax Accountant (No. 151214). Member of the Tokyo Certified Public Tax Accountants' Association.
Yuma started his career at a Big Four-affiliated audit firm, one of Japan's four largest. He audited listed companies and supported IPOs. He then served as a director and CFO at a company preparing for an IPO, and later founded this office.
Our office is at 1-3-2 Hamamatsucho, Minato-ku, Tokyo. Yuma also runs a Japanese-language tax channel on YouTube.
Our track record
These figures are for our Japanese-language service, as of October 5, 2026.
4.9 out of 5
Average rating on Mitsumore
101 reviews
From clients on Mitsumore
294 jobs booked
Through Mitsumore
Reviews from clients on Mitsumore, a Japanese service marketplace. They describe our Japanese-language service, not our English-language service. Read the reviews on Mitsumore (in Japanese)
Frequently asked questions
Are you an English-speaking tax accountant?
No. Our tax accountant is a licensed Japanese CPA and tax accountant who does not speak English. All of our work with you is done in written English by email.
What if I would rather talk to someone?
Then we are not the right fit, and a firm that offers calls will serve you better.
What language is my tax return in?
The return filed with the National Tax Agency is a Japanese document. We send you a written English summary before filing so that you can approve it.
If the English and Japanese differ, which one applies?
The Japanese original applies.
Why is the fee different from your Japanese page?
The English fee includes written English correspondence.
Do you prepare US or other foreign tax returns?
No. We handle Japanese tax only.
What are the common mistakes, and what can I do myself?
Common mistakes include relying only on the year-end adjustment, treating withheld tax as final, and deciding your tax status by counting 183 days. Another is confusing non-permanent resident, which is a tax status, with the permanent resident visa.
You can collect your documents and check the list on this page yourself. You need a professional when your tax status is unclear, you have income in several countries, or you want a special rule.
Can my tax filing affect my visa?
It can be relevant. Japan's immigration guidelines look at whether tax obligations are met when visa renewals and permanent residency are reviewed. Filing on time matters, but a tax return does not guarantee any result. We do not give views on immigration outcomes, and we do not prepare immigration documents.
Guides
Plain-English guides to Japanese tax. See all guides
See your fee before you decide
Answer a few questions and get your fee in 60 seconds, or send your details for a free written quote.
Get a free written quote
Send your details. We aim to reply in written English within two business days, Japan time.
Please do not send your residence card, My Number or bank details in this form. We work by email only and do not offer calls or video meetings. We help individuals only, not companies.