Dual citizen / cross-border
Two systems, one clear plan.
Who this is for
You hold ties to two countries — citizenship, family, or assets — and taxes reach across borders.
Cross-border life multiplies the rules: two tax systems, possible double taxation, and reporting duties that can apply even when no tax is owed. US citizens face this most sharply, but any dual tie needs care.
The winning move is to map obligations early and keep clean records, rather than discover a filing requirement years late. This is the persona most likely to benefit from a qualified cross-border professional.
Your money priorities
- Establish your tax residency in each country
- Understand the treaty and foreign tax credit between them
- Track all reporting duties (e.g. US FBAR/FATCA)
- Plan for Japan’s exit tax if you hold large investments
Watch out for
- Reporting penalties can apply even with zero tax due
- Japan’s NISA break may not be recognised abroad
- DIY cross-border filing is where costly mistakes hide
Recommended courses
Cross-border and expat taxes
Tax residency, double-taxation relief, US citizens, dual nationals, and Japan’s exit tax — mapped clearly.
Understanding Japanese taxes
Income tax, resident tax, the year-end adjustment, and the deductions most people leave on the table.
NISA foundations
Japan’s tax-free investment account: what it is, how the 2024 system works, and how to begin.
Related roadmaps
In the library
🧭 Tax tools & official resources
Primary sources for cross-border and expat tax. Rules change — always confirm current details with the official source or a qualified professional.
Japan’s tax authority: income tax, filing, and the e-Tax online system.
NTA — Income Tax for foreign residentsOfficialOfficial explanation of resident, non-permanent resident, and non-resident taxation.
Japan tax treaty network (MOF)OfficialMinistry of Finance list of Japan’s tax treaties for avoiding double taxation.
US IRS — Citizens & residents abroadOfficialUS filing duties abroad: foreign earned income exclusion and foreign tax credit.
US FBAR (FinCEN Form 114)OfficialForeign bank account reporting required of many US persons, separate from tax.
Japan Pension Service — lump-sum withdrawalOfficialRules for the lump-sum pension withdrawal available to some people leaving Japan.