US Expat Taxes in Japan

Residence and the U.S. filing starting point in Japan

A U.S. citizen or green-card holder generally continues to analyze U.S. worldwide-income filing while living in Japan. Local residence is a separate question. Start a year-by-year timeline that identifies arrival, visa or residence status, days present, homes available, work performed, family location, local registration, and departure or renewal dates. Japan is geographically distant from the US, making the 330-day test easier to meet. However, business trips to the US and home visits must still be tracked. Japan's strict immigration system means your visa status is well documented. A Japanese residence card (zairyu card), registration at city hall (juminhyo), and a My Number (individual number) strongly support bona fide residence. Japanese tax filings (kakutei shinkoku) provide additional evidence. Do not treat a visa label or a local tax number as a substitute for the U.S. return analysis.

FEIE and earned income for Americans in Japan

The Foreign Earned Income Exclusion applies only to qualifying earned income and requires the relevant tax-home and presence or residence test. Salary, self-employment receipts, and services performed abroad need a work-location record. Pensions, Social Security, dividends, interest, rent, and capital gains need separate treatment. Track every trip to the United States, including partial days where the current rules count them, and preserve the residence evidence behind a bona fide claim. Compare the FEIE with the Foreign Tax Credit rather than assuming the exclusion is best.

The Japan local tax system and the U.S. return

Japan taxes residents on worldwide income. National progressive rates: 5% to 45%, plus flat 10% local inhabitant tax (prefectural + municipal), plus 2.1% reconstruction surtax on national tax. The local result may depend on residence, source, remittance, employment, business activity, and the tax year. Preserve the local registration, return, assessment, payment receipt, withholding records, and any refund. A local exemption or reduced rate can change the foreign taxes available for a U.S. credit; it does not generally turn off U.S. citizenship-based reporting.

Treaty and social-security questions for Japan

A U.S.–Japan income-tax treaty, signed in 2003, is in force. Any treaty benefit should be checked against the current treaty text, protocol, saving clause, and residence facts. A U.S.–Japan Social Security totalization agreement is in force. Do not use a treaty headline to decide a pension, employment, self-employment, or state result without identifying the exact article and tax year.

Banks, accounts, and FATCA in Japan

A Japanese cash-value insurance or annuity policy may be a foreign financial account under FinCEN's current definition. Test foreign location, U.S.-person status, financial interest or signature authority, aggregate maximum value, filing year, and applicable exceptions; pension and insurance products require product-specific review. Japan signed a Model 2 IGA with the US in 2013, meaning Japanese banks report directly to the IRS (not through Japanese tax authorities). Major Japanese banks comply with FATCA but may require additional documentation from US citizens. Build one account inventory with the legal owner, joint owners, signature authority, institution, account type, currency (JPY), maximum value, year-end value, and closure date. Compare it with the current FBAR and Form 8938 instructions. A foreign bank’s FATCA request is a documentation issue, not automatically an IRS assessment. Keep bank correspondence and secure records separate from the U.S. income calculation.

Income source and work-location records

For an employee, contractor, or business owner in Japan, record where services were physically performed, which entity paid, where the customer or employer is located, and where the work was managed. A Japan payer does not automatically make every item foreign-source, and a U.S. payer does not automatically make services U.S.-source. Keep contracts, invoices, payroll, travel records, foreign withholding, local filings, and entity books. Separate personal income, business income, distributions, and investment returns before applying a credit or exclusion.

Pensions, funds, and savings products from Japan

Ask whether a local pension, insurance policy, mutual fund, ETF, savings plan, or employer account is a pension arrangement, trust, foreign corporation, or another product for U.S. purposes. The local label may not answer the U.S. classification. Preserve plan documents, investment menus, annual statements, distributions, beneficiary records, and any annual information statement. If the product contains foreign pooled funds, screen Form 8621 and PFIC questions. If it is a pension, review treaty and Form 8938 questions separately from current income.

Residence routes and documentation in Japan

Common residence routes in Japan include Engineer/Specialist in Humanities Visa, Highly Skilled Professional Visa, Spouse Visa, Business Manager Visa. For each route, preserve the application, approval, renewal, local address, work permission, health coverage, and evidence of actual use. A residence permit may support a bona fide-residence analysis, but the taxpayer’s conduct and full-year facts still matter. If the taxpayer is a digital nomad, retiree, student, contractor, or family member, connect the visa record to the actual income and household timeline rather than relying on a visa marketing description.

Common Japan pitfalls to test before filing

These are screening prompts, not conclusions. For each one, identify the year, owner, transaction, document, and form affected. Add gifts, inheritances, foreign entities, local funds, rental property, state ties, and IRS or bank notices to the same inventory. The country-specific articles on this site can help frame these questions; use them, then check the current primary sources.

• Japan's combined tax rate (national + local + reconstruction surtax) can exceed 55%, making tax planning critical
• Japanese iDeCo and NISA accounts are not recognized as tax-advantaged by the IRS
• The 5-year and 10-year rules for non-permanent resident taxation create complex transition periods
• Japanese exit tax on unrealized gains (over ¥100 million in assets) applies when leaving Japan
• Local inhabitant tax is assessed on January 1 each year and billed through the following June - timing departures is important

A records-first annual workflow for Japan

Collect identity, residence, travel, income, account, pension, entity, local-tax, state, prior-return, and notice records. Classify each item, calculate the federal return, reconcile the foreign tax credit or FEIE, review FBAR and Form 8938 overlap, and compare the U.S. return with the local return. Save the final return, acceptance records, payment evidence, conversion rates, and unresolved issues for next year. Current official source material to check includes the current IRS, Treasury, and local authority sources. A paid consultation can turn the map into a written preparation scope before work begins.