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Worldwide Income vs. Japan-Source Income

Japan does not tax every status on the same slice of income. The law sorts income into two buckets, Japan-source and foreign-source, and your residency status decides which buckets land in your return.12

Confirm current details with official sources

Procedures, fees, and requirements can change. Confirm current details at the National Tax Agency site. This article is general information, not tax advice; for your specific case, consult a licensed zeirishi (tax accountant).

Overview​

Japan-source income is an enumerated list in Article 161 of the Income Tax Act. Foreign-source income is everything else. Full residents pay on both buckets, non-residents only on the Japan-source list, and non-permanent residents on the Japan-source list plus any foreign-source income they remit to Japan.123

This article is the sourcing canonical the rest of the tax series assumes. Read it before reasoning about remittances, treaties, or departure-year filings.

The Japan-source categories​

The statute lists the categories; the NTA's English guidance walks through them with examples. The shape is consistent: income connected to Japanese territory, Japanese payers, or Japanese assets counts as domestic-source.43

Work, business, and real estate in Japan​

Business income attributable to a 恒久的施設 (jokyu-teki shisetsu, "permanent establishment", usually shortened to PE) in Japan is Japan-source.4 A foreign freelancer whose Japanese branch does the work cannot keep that income offshore by invoicing from abroad.

Employment income follows where the work is physically performed. Salary for days worked in Japan is Japan-source even if the employer sits overseas and the payroll lands in a foreign account.4

Japanese real estate always pulls income onshore. Rents from property in Japan, gains from selling Japanese land or buildings, and consideration for transferring rights over them are Japan-source.43 Asset management and holding income from property located here counts as well.

Specified personal services get their own entry: entertainers, professional athletes, lawyers, certified public accountants, and architects whose business mainly provides those services in Japan fall inside the list.4

Japanese financial income​

Financial income follows the payer. Interest on Japanese government bonds, municipal bonds, and domestic corporate bonds is Japan-source, as is interest on savings held at business offices located in Japan.43

Dividends of surplus and profit distributions received from domestic corporations are Japan-source.4 Interest on loans to persons conducting operations in Japan, where the loan pertains to those operations, is Japan-source too.3

The payer test is the shortcut

Ask who pays, not where you live. A Japanese corporation paying you dividends or interest almost always generates Japan-source income, whatever your residency status.

Everything else is foreign-source income​

国外源泉所得 (kokugai gensen shotoku, "foreign-source income") is the reciprocal: any income outside the Article 161 list.1 Salary for work performed abroad, rent from a flat in your home country, and business profits with no Japanese PE all sit in this bucket.

The bucket matters most inside the non-permanent-resident window. Foreign-source income paid abroad and never remitted to Japan is exempt for non-permanent residents (as of the 2024 and 2025 NTA guides).12 That sentence carries the most weight in this article for early-years residents with foreign earnings.

The NPR remittance rule​

Three sub-rules make up the remittance treatment. First, foreign-source income paid in Japan is always taxable for non-permanent residents; only the paid-abroad slice can escape.1

Second, the paid-abroad slice is taxable only to the extent remitted to Japan in the year. Money that stays offshore stays out of the return.12

Third, remittances follow a fixed ordering. Amounts sent from abroad are deemed to come first from your non-foreign-source income held abroad, and only the excess counts as remitted foreign-source income.1 You cannot designate a transfer as clean capital while taxable income sits offshore in the same pool.

The whole exemption expires when the taxpayer graduates to full resident after five aggregate years. From that point the worldwide scope absorbs everything.2

Strategies people discuss in the NPR window​

Practitioner discussions cluster around two themes: timing remittances into low-exposure years, and keeping foreign-currency holdings structurally separate from JPY remittance flows so the ordering rule bites less.1

Treat these as discussion topics for a zeirishi engagement, not as instructions. The ordering rule, the graduation date, and treaty overlays interact in ways that punish do-it-yourself planning. A general-information article can map the terrain; only your adviser can route your facts through it.

Why sourcing errors endanger renewals​

Sourcing mistakes produce under-reported returns, and underpayment is exactly what permanent residence screening punishes. The guideline requires proper performance of public duties including tax, with even late-paid amounts evaluated negatively in principle (as of 2026-02).5 Report the Japan-source slice completely, whatever your status.

Good to know​

Salary for workdays physically in Japan is Japan-source​

Remote workers sometimes assume a foreign payroll means foreign-source salary. The test is where your body was when the work happened, not where the transfer originated.4

Remitting after full residency starts does not cleanse old income​

Delaying a transfer until after the five-year graduation gains nothing, because worldwide scope then taxes the income whether remitted or not.2 The window closes; plan inside it or not at all.

Dividends and interest follow the payer, not your address​

Japanese-payer financial income stays Japan-source for every status, including non-residents.4 Moving abroad mid-year does not convert Japanese dividends into foreign income.

Treaties can shrink Japan's slice on some categories​

Bilateral treaties cap or reallocate taxing rights on items like dividends, interest, royalties, and pensions.4 The domestic list is the starting point for analysis, and the treaty is the adjustment layer on top.

See also​

References​

Footnotes​

  1. National Tax Agency. 2024 Income Tax Guide for Foreigners, scope of taxable income and domestic-source income reference. 2024. https://www.nta.go.jp/english/taxes/individual/pdf/incometax_2024/01.pdf ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  2. National Tax Agency. 2025 Income Tax Guide for Foreigners, scope of taxable income. 2025. https://www.nta.go.jp/english/taxes/individual/pdf/incometax_2025/04.pdf ↩ ↩2 ↩3 ↩4 ↩5 ↩6

  3. e-Gov Law Search. Income Tax Act (Act No. 33 of 1965), Article 161 (domestic-source income categories). https://elaws.e-gov.go.jp/document?lawid=340AC0000000033 ↩ ↩2 ↩3 ↩4 ↩5

  4. National Tax Agency. No.12006, Tax on the income of an individual as a non-resident in Japan for tax purposes. https://www.nta.go.jp/english/taxes/individual/12006.htm ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10

  5. Immigration Services Agency. Guidelines concerning permission for permanent residence (revised 2026-02-24). 2026. https://www.moj.go.jp/isa/applications/resources/nyukan_nyukan50.html ↩