Taxes for Foreign Residents in Japan (2026)

Taxes for foreign residents in Japan begin with three questions: are you a resident or non-resident, what kind of income do you have, and how is that income collected or reported? The National Tax Agency (NTA) divides individuals into residents and non-residents, and that classification changes the scope and method of income taxation.

Resident versus non-resident tax classification

Under Japan's Income Tax Act, a 居住者 (kyojūsha), or resident, is an individual who has an address in Japan or has continuously had an abode in Japan for at least one year. Anyone who does not meet the resident definition is a 非居住者 (hikyojūsha), or non-resident.

An 住所 (jūsho), or address, means the center of a person's life. The NTA says this is determined from objective facts such as housing, occupation, the location of assets, where relatives live, and nationality—not from a person's stated preference alone.

A 居所 (kyosho), or abode, is a place where someone actually lives even though it is not the center of that person's life. Continuous possession of an abode for at least one year is therefore an alternative route to resident status, not a waiting period that always applies.

How the one-year rule works

The one-year rule concerns the abode part of the definition. A person may already satisfy the resident definition through having an address in Japan even before maintaining an abode for that period.

Conversely, physical presence by itself does not settle where someone has an address. Japan may also use presumptions based on occupation and related circumstances when determining whether a person's address is in Japan.

Is there a 183-day test?

The NTA expressly says that Japanese residence is not determined solely by the number of days spent in a country. A person who spends at least 183 days abroad may still be a Japanese resident when their center of life remains in Japan, according to the NTA guidance for people with homes or places of stay in multiple countries.

The same principle applies to someone moving repeatedly among countries. If that person's center of life is in Japan, frequent international movement does not by itself prevent Japanese resident status.

What income is taxed for a non-resident?

Japan limits a non-resident's taxable scope to 国内源泉所得 (kokunai gensen shotoku), meaning Japan-source income. Determining the result requires identifying the applicable category of Japan-source income and examining any permanent-establishment and attribution questions.

The NTA says to examine:

• Which category of Japan-source income applies.
• Whether the non-resident has a 恒久的施設 (kōkyūteki shisetsu), or permanent establishment, in Japan.
• Whether the income is attributable to that permanent establishment.
• Whether tax is collected through withholding, self-assessment, or a combination of the two.

These questions matter because different collection methods can apply to different income and business arrangements. If the source or permanent-establishment analysis is unclear, avoid deciding the tax treatment from residence status alone.

National income tax

National 所得税 (shotokuzei), or income tax, is the tax addressed by the cited NTA materials. Those materials explain the resident/non-resident classification, the Japan-source limitation for non-residents, and the use of withholding or self-assessment.

The word “resident” in the Income Tax Act refers to the tax classification described above: whether an individual has an address in Japan or has continuously had an abode in Japan for at least one year.

How foreigners pay income tax in Japan

For non-residents, the Income Tax Act uses both 源泉徴収 (gensen chōshū), or withholding at source, and 申告納税方式 (shinkoku nōzei hōshiki), or self-assessment. The applicable route depends on the income, permanent-establishment status, and attribution described above.

The NTA gives royalties and similar payments as an example. When such income is attributable to a non-resident's permanent establishment, withholding followed by self-assessment is generally used; when it is not attributable, withholding alone may generally complete the tax treatment.

For a non-resident without a permanent establishment, withholding alone is generally the basic method for the example discussed by the NTA. This does not mean that every foreign resident, every payment, or every kind of Japan-source income follows the same procedure.

Do all non-residents have one flat withholding rate?

The NTA overview cited for this article does not state a universal flat percentage for every non-resident payment. It instead emphasizes that the method varies according to income category, permanent-establishment status, and whether the income is attributable to that establishment.

For that reason, this guide does not reproduce the specific percentage often quoted in general search results. Confirm the rate for the exact income category from current NTA guidance or a qualified Japanese tax professional before calculating or withholding tax.

Tax treaties and double taxation

A person can be considered resident under Japanese law and also resident under another country's law. The NTA describes this as dual residence and notes that it can create the possibility of taxation in both countries.

Where Japan has a 租税条約 (sozei jōyaku), or tax treaty, with the other country, the treaty may determine which country treats the person as resident. The NTA gives an example treaty sequence that considers the location of a permanent home, the center of vital interests, the habitual abode, and nationality. Consultation between the countries' competent authorities may also occur when necessary.

Treaty residence is therefore a separate analysis from domestic residence. First apply each country's domestic rules, identify whether dual residence exists, and then check the wording of the applicable treaty rather than assuming that all treaties use an identical result.

Which office should you contact?

The cited NTA pages cover the national income-tax and withholding-tax subjects discussed here. They direct national-tax inquiries to Regional Taxation Bureau telephone consultation centers and other NTA tax consultation channels.

Use the national-tax consultation route for questions about:

• Resident or non-resident classification under the Income Tax Act.
• Whether income is Japan-source income.
• Non-resident withholding and self-assessment.
• Permanent establishments and income attribution.
• Tax-treaty residence questions.

When seeking guidance, identify the issue as precisely as possible, such as resident classification, Japan-source income, withholding, self-assessment, permanent-establishment attribution, or treaty residence.

Step-by-step tax review checklist

Use this process before filing, accepting a withholding calculation, or requesting professional advice.

Step A: Build your residence timeline

Record when you entered and left Japan and where you actually lived. Note any point at which Japan may have become the center of your life or at which you continuously maintained an abode.

Step B: Gather the address factors

List your homes, occupation, assets, close family locations, and other objective connections. These are among the facts the NTA identifies when determining the center of a person's life.

Step C: Classify each income stream

For every payment, record the payer, work or asset involved, contract, payment period, and connection to Japan. Do not assume that all income has the same source or tax treatment.

Step D: Examine business presence

If you conduct business in Japan, determine whether a permanent-establishment question arises. If it does, identify which income may be attributable to that establishment.

Step E: Check the collection method

Establish whether tax has already been withheld and whether the income may also require self-assessment. Keep payment records and any documents showing withholding, but treat this as a practical records checklist rather than an official list of mandatory documents.

Step F: Review possible dual residence

Check whether another country also considers you resident under its domestic law. If both countries do, locate the applicable treaty and work through its residence provisions in the stated order.

Step G: Prepare your national-tax questions

Send questions about national income tax, withholding, permanent-establishment attribution, and treaty residence through the national-tax consultation channels identified by the NTA.

Frequently asked questions

When does a foreign national become a tax resident of Japan?

A person is a resident if they have an address in Japan or have continuously had an abode in Japan for at least one year. Address is determined from the objective center of the person's life, while an abode is a place where the person actually lives without it necessarily being their center of life.

Does the 183-day rule determine Japanese tax residence?

No. Days of presence alone do not determine Japanese residence, and spending at least 183 days abroad does not necessarily prevent someone from remaining a resident when their center of life is in Japan.

Are non-residents taxed on all of their income?

The NTA states that non-residents are taxed only within the scope of Japan-source income. The method depends on the income category, permanent-establishment status, and whether the income is attributable to that establishment.

Which office handles national tax questions for foreign residents?

The cited NTA pages direct national-tax inquiries to Regional Taxation Bureau telephone consultation centers and other NTA tax consultation channels.

Common questions