Remote work for a foreign employer from Japan
Japan-source employment income, withholding gaps, estimated liability, and permanent-establishment and treaty issues.
If you live in Japan and work here for a foreign employer, that salary is generally Japan-source and taxable in Japan even with no Japanese withholding — you likely must file and pay, and there can be permanent-establishment, social-security, and treaty issues.
Effective: 2026-01-01 to 2026-12-31
Professional review pending — treat as draft and confirm with the authorities.
Key points
- Work performed in Japan is Japan-source, even if paid into a foreign account.
- No Japanese withholding does not make the salary tax-free.
- You likely must file and may owe estimated tax.
- Permanent-establishment, social-security, and treaty questions can arise — get advice.
Why it is taxable here
Japan taxes employment income by where the work is performed. If you are a resident working from Japan, your salary from a foreign employer is Japan-source and taxable here even though the employer runs no Japanese payroll and pays into an overseas account. Because no one withheld Japanese tax, you generally must file a return and pay — and you may fall into estimated-tax prepayments.
The bigger risks
Beyond your own income tax, your presence can raise a permanent-establishment question for the employer, and social-security coverage (which country’s system applies) may be governed by a totalization agreement. A treaty can change source-country taxing rights. These are fact-specific, cross-border issues — confirm your position with a licensed tax accountant before your first filing.
Who this is for
- Remote workers for overseas companies
- Digital nomads settling in Japan
What this is not
- Nonresidents working outside Japan
- This is a cross-border area with real employer and social-security risks; get professional advice early.
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.
Do I need to file a tax return in Japan?
Many employees do not, because tax is settled by year-end adjustment (年末調整). You generally must file (確定申告) if you have side income over ¥200,000, two or more employers, self-employment income, sizeable investment or crypto gains, or you want to claim deductions like large medical costs or a first-year mortgage credit. Filing season is Feb 16 – Mar 15 via e-Tax. When unsure, check the NTA guidance or ask a 税理士.