Foreign tax credit in Japan
Qualifying foreign taxes, the Japanese limitation, carryforwards, and documents.
A Japanese resident can claim a credit for qualifying foreign income taxes to relieve double taxation, but it is capped by a Japanese limitation (not necessarily the whole foreign tax), needs country/income/payment/exchange documentation, and certain unused amounts carry forward three years.
Effective: 2026-01-01 to 2026-12-31
Professional review pending — treat as draft and confirm with the authorities.
Key points
- Credits qualifying foreign income taxes against Japanese tax.
- Capped by a Japanese limitation — not always the full foreign tax.
- Certain unused foreign tax / limitation carries forward three years.
- Requires country, income-category, payment, and exchange-rate records.
How the credit works
When the same income is taxed both abroad and in Japan, the foreign-tax credit reduces your Japanese tax by the qualifying foreign income tax, up to a Japanese limitation computed from the foreign-income share of your total income. Because of that ceiling, the credit may be less than the full foreign tax; certain unused foreign tax and unused limitation can carry forward three years.
Documentation and treaties
You need documentation of the country, income category, foreign tax, payment, and exchange rate. A treaty can reduce the foreign withholding in the first place, changing the credit needed, and some foreign taxes are not creditable. Because the calculation and treaty coordination are technical, review significant foreign-tax positions with a professional.
Who this is for
- Residents taxed abroad and in Japan
- People with foreign dividends or salary
What this is not
- US citizenship-based filing (separate US credit)
- The credit is capped and not every foreign tax qualifies — keep full documentation.
Frequently asked questions
How does tax residency work in Japan?
For tax, Japan classifies you as non-resident, non-permanent resident, or permanent resident — separate from your immigration status. Broadly: non-residents are taxed only on Japan-source income; non-permanent residents (in Japan under 5 of the last 10 years, without permanent intent) are taxed on Japan-source income plus foreign income paid in or remitted to Japan; permanent residents (for tax) are taxed on worldwide income. This affects foreign income and investments, so confirm your category with the NTA or a tax accountant.