Key Tax Rules for Expats and Those Leaving Japan
1. Notification & Final Return
If you lose Japanese residential status, you must file a final tax return (確定申告) for the part of the year until departure. If you appoint a tax agent (納税管理人) beforehand, you may file the return through them. If not, you must file a “quasi-final return” before leaving. (nta.go.jp)
2. Exit Tax (“国外転出時課税制度”)
Japan imposes an exit tax on certain individuals moving abroad with appreciable built-in gains in financial assets:
- You are subject if you are a resident with ≥ JPY 100 million+ in specified assets (stocks, derivatives etc.). (nta.go.jp)
- At the moment of exit, these assets are treated as if sold—hidden (“unrealized”) gains are taxed.
- You may apply for tax payment deferral under certain conditions. Typically 5 years; with extension up to 10 years if conditions are met. Must notify the tax office and fulfill other procedural obligations. (nta.go.jp)
3. Reporting Assets and Liabilities
Residents with property meeting thresholds must submit a “Report of Assets and Liabilities.” Example obligations:
- If you have total claims/liabilities or real/equity assets of JPY 100 million or more in exit-tax-qualifying assets by December 31. (nta.go.jp)
- Also applies if total income exceeds JPY 20 million and assets/liabilities exceed a certain value.
Practical Tips for Digital Nomads or Planning Exit
- Start early: Track value of all your internationally held financial assets to determine whether you cross the threshold of JPY 100 million.
- Appoint a tax agent in Japan: Facilitates filing and allows options like deferral.
- Plan timing: Gain recognition happens at departure. Exit just before a large gain is realized may shift taxation.
- Keep records of purchase amounts, contracts, derivatives etc. You’ll need this for calculating taxable unrealized gains.
Case Example
Let’s say you are a software developer planning to move abroad in 2027. You own unlisted shares, derivatives and crypto-assets totaling JPY 120 million with an unrealized gain of JPY 40 million.
- You will owe income tax at exiting moment on that JPY 40 million gain.
- If you appoint a tax agent and meet criteria, you may delay payment by up to 5 years (extendable to 10).
- You must submit the assets report (type, quantity, value) by December 31 before departure.
Interactions with FY2026 Reforms
The FY2026 reforms don’t directly change the exit tax rules, but affect thresholds and income tax exemptions/deductions. Hence, when calculating overall liability, earlier reforms (e.g. higher basic deduction, changes to high income brackets) could reduce your taxable income elsewhere, helping offset exit tax exposure.
Compliance Checklist
- [_] Track your global assets quarterly and project if values exceed exit thresholds.
- [_] Collect cost basis documents for all specified assets.
- [_] File Notification of Tax Agent before departure if possible.
- [_] On exit, file final or quasi-final return including deemed sale or transfer income.
- [_] Submit asset/liability report if required.
- [_] Consult with international tax specialists to coordinate Japanese obligations and your destination jurisdiction’s taxation.
Following these steps can help you stay compliant, avoid late-filing penalties, and manage tax exposure when you transition abroad.