Remote work in Tokyo: tax checks for a short stay

Before planning to work remotely during a short Tokyo visit, check that your immigration status allows the work and ask a tax adviser what you might owe. These are separate questions. Being exempt from tax wouldn’t give you permission to work, and your employer’s approval of the trip doesn’t settle either question.

MOFA describes short-term visits as excluding paid activities. Don't assume that payment by an overseas employer creates a blanket remote-work exception. Describe your actual activity to the relevant immigration authority or qualified adviser before travelling.

What your adviser needs to know

Tell the adviser your nationality, which country treats you as a tax resident, the immigration status you plan to use in Japan and your exact travel dates, including earlier visits. Explain whether you’re an employee, contractor or business owner, who pays you, where that person or company is based and what work you’ll do from Japan.

A software employee working on internal projects and a founder negotiating customer contracts may need different advice. Describe the work you actually plan to do, including any meetings or authority to sign contracts, rather than asking only whether a certain number of days is allowed.

Separate residence from taxable income

The NTA’s residence guidance considers where your life is based and how long you have continuously lived in Japan. Entering without a visa doesn’t by itself tell you whether Japan treats you as a tax resident.

You can owe Japanese tax even if you aren’t a Japanese tax resident. The NTA’s English guidance includes pay for work done in Japan among the types of income it may tax. It also explains that tax treaties differ. Ask how the rules apply to your work; being paid by a company abroad doesn’t settle the answer.

Don’t estimate your bill by taking one tax rate for Japanese residents and applying it to all the salary you earn during the visit. Ask your adviser whether you owe Japanese tax, whether a tax treaty reduces it, and whether you or your employer must report and pay it.

Count the period the treaty actually uses

If a tax treaty could exempt your salary from Japanese tax, ask the adviser which treaty and section apply. Under the U.S.–Japan treaty, one requirement is to spend no more than 183 days in Japan during any twelve-month period that begins or ends in the tax year concerned. The NTA’s day-count explanation describes this rule.

A new calendar year or a new permission to enter Japan therefore doesn’t necessarily restart the count. Give the adviser the dates you entered and left Japan for each visit. Don’t estimate them from the number of months on your rental agreement.

If you qualify as a U.S. resident under the treaty, staying within the day limit is only one requirement. The U.S.–Japan treaty explanation says your employer must not be a Japanese tax resident. Your pay also must not be a cost of your employer’s “permanent establishment” in Japan. That term covers certain offices and other business operations under the treaty. Ask your employer and adviser whether it has such an operation in Japan and whether that operation pays your salary or records it as its own cost. They need to check both requirements. Other treaties can have different rules.

For a dated illustration, suppose you visit from 1–31 October 2026, then return from 1 January–2 June 2027. Counting every day present, those visits contribute 31 and 153 days: 184 in total within the twelve months from 1 October 2026 through 30 September 2027. Counting only the second trip would miss the limit being exceeded. This tests the day-count condition alone, not the other treaty conditions or the tax bill.

Get the employer's review in writing

Give HR or the team responsible for overseas work the same travel and work details. Include any Japanese office or related company involved, so it can check the employer's obligations as well as your own.

Ask them to check what the company would need to do as well as what income tax you might owe. “You can work from anywhere” may be a company policy that hasn’t been checked against another country’s rules. If the team sets conditions, keep them in writing with the approved dates.

If you're self-employed, ask how Japan taxes your business income. Don't assume that the tax exceptions for employees also apply to you. Explain where clients are, where you carry on the activity and how your business is structured.

A departure procedure to resolve before your flight

The NTA’s departure guidance covers people who will no longer have a home or residence in Japan for tax purposes, but still need to file a return or complete other tax paperwork. It says they should appoint a “tax agent”, someone living in Japan who can handle those matters for them, and send the tax office a “Notification of Tax Agent for income tax / consumption tax.” If you’re required to file a return under this rule and haven’t told the tax office about your tax agent, you must file and pay before leaving Japan.

Ask your adviser whether this rule applies to you and who will send the form. It doesn’t mean every short-term visitor has to file it.

If you are already in Tokyo

Gather your travel dates and work records now and speak to an adviser. Ask whether you need to report income, pay tax or appoint someone in Japan before you leave. Don’t assume it can all wait until you file your annual return at home.

For future trips, resolve permission and tax before buying accommodation around a work plan. If the digital nomad route is suitable, it has its own eligibility and activity requirements; it still needs a separate tax review.