Am I a permanent or non-permanent resident for Japanese tax purposes?
Short answer: An American without Japanese nationality is generally a 'non-permanent resident' for Japanese tax as long as they have had a domicile or residence in Japan for five years or less within the preceding ten years. Non-permanent residents are taxed on Japan-source income plus any foreign-source income actually paid in or remitted to Japan; everyone else who is tax-resident is taxed on worldwide income.
Written and reviewed by Anthony Walsh, Selanis. Last reviewed 2026-10-09.
Why it works this way
Japan's residence categories are set out in its income tax rules: a resident with a domicile or residence of more than one year is either a non-permanent resident (no Japanese nationality, five years or less of residence within the last ten) or an ordinary resident taxed on worldwide income regardless of source.
For a non-permanent resident, foreign-source income is only taxed in Japan if it is paid in Japan or remitted into Japan. Keeping foreign investment income and sale proceeds in an account outside Japan, and funding Japanese living costs from Japan-source salary, is how many Americans manage the line deliberately rather than by accident.
Once the five-year threshold inside the ten-year look-back is crossed, worldwide income becomes fully taxable in Japan regardless of remittance, which changes how foreign accounts, US capital gains and rental income should be planned well before the transition happens.
The expensive mistake: Remitting a large sum to Japan without checking the non-permanent-resident math
A single large remittance — covering a house deposit or a tuition payment — can pull foreign-source income into Japanese tax for that year. The ordering and timing of remittances is worth planning before the transfer, not after.
What to do
- Count your Japan years within the last ten — Establish whether you are still within the five-year non-permanent-resident window.
- Separate Japan-source and foreign-source income — Keep clear records of what is paid where, since remittance is what brings foreign income into scope.
- Plan remittances deliberately — Time large transfers to Japan with their tax consequence in mind, especially near the five-year threshold.