Japan Branch - Limited Time Offer

Copper River Tax Japan

Professional US tax services for individuals in Japan. Our Japan branch provides localized support with services priced in Japanese Yen.

Listed on the IRS Website as an Acceptance Agent in Japan

IRS-listed Acceptance Agent based in Hokkaido

Our Services

Comprehensive US Tax Services

Whether you're a Japanese resident needing an ITIN, a US citizen living abroad, or a service member stationed in Japan, we have you covered.

ITIN Application Services

As an IRS-authorized Certified Acceptance Agent (CAA), we can process your ITIN application without you having to mail original documents to the IRS, avoiding the risk of international mail loss. We offer in-person document verification in Sapporo and Otaru, so even domestic mailing can be avoided.

  • In-person verification in Sapporo & Otaru
  • W-7 form preparation and submission
  • Application tracking until issuance
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Notary & Apostille Services

New Jersey remote notarization with physical document stamping at our Japan branch. Fast apostille services with standard 7-day delivery or super expedited 72-hour hand delivery to major Japanese cities.

  • NJ remote notarization with physical stamp
  • Apostille with 7-day standard delivery
  • 72-hour hand delivery available
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EIN Application Services

Fast US EIN application service for Japanese individuals and entities. Get your Employer Identification Number with our 48-hour filing guarantee or receive a full refund.

  • 48-hour filing guarantee
  • Form 8832 entity classification
  • Full refund if delayed
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US Nonresident Tax Filing

For Japanese residents with US-source income such as investments, rental properties, or business income. We ensure proper treaty benefits are applied.

  • Form 1040-NR preparation
  • US-Japan tax treaty optimization
  • Investment income reporting
US Expat Tax Services

Comprehensive tax services for US citizens and green card holders residing in Japan, including all available exclusions and credits.

  • Foreign Earned Income Exclusion (FEIE)
  • Foreign Tax Credit optimization
  • FBAR and FATCA compliance
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US Military Personnel

To honor the service of US military members stationed in Japan, we offer 50% off all tax services.

  • 50% discount on all services
  • Understanding of military tax situations
  • Flexible scheduling for service members
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Foreign Account & Corporation Compliance

Behind on foreign account reporting or Form 5471 for foreign corporations? We offer Streamlined Procedures, delinquent FBAR filing, and Form 5471 preparation to bring you into compliance.

  • Streamlined Procedures from ¥150,000
  • Form 5471 from ¥80,000 (dormant) / ¥100,000 (active)
  • 50% discount for US military & veterans
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IRS-Listed Acceptance Agent

ITIN Application Service

Listed on the official IRS website as an Acceptance Agent in Japan. In-person verification in Sapporo & Otaru. Special promotional pricing available.

US Document Authentication

Notary & Apostille Services

New Jersey remote notarization with physical document stamping in Japan. Fast apostille services with 7-day standard delivery or 72-hour hand delivery to major Japanese cities.

View Notary Services Super expedited: 72-hour hand delivery
Limited Time Promotion

EIN Application Service

Fast US EIN application for Japanese individuals and entities. 48-hour filing guarantee with optional Form 8832 entity classification election.

View EIN Service & Pricing 48-hour filing guarantee or full refund
US Expat & Military Services

Living in Japan? We've Got You Covered

Comprehensive tax services for US citizens, green card holders, and military personnel stationed in Japan. FEIE, foreign tax credits, FBAR/FATCA compliance, and special military discounts.

View Expat Services Military personnel: 50% off all services
Compliance Services

Behind on Foreign Account Reporting?

Streamlined Procedures, delinquent FBAR filing, and Form 5471 preparation — all priced in JPY with special military discounts.

Learn About Your Options US military & veterans: 50% off all compliance services

Japan Branch Pricing

All services provided by our Japan branch are priced in Japanese Yen (JPY), making it easier for clients in Japan to budget and pay for services without currency conversion concerns.

Priced in JPY

Competitive local rates

Why Choose Us

Local Support, Global Expertise

Bilingual Support
Our team provides bilingual support in Japanese and English. Japanese language assistance is available for all consultations.
Bank-Grade Security
All communications through our proprietary chat system are protected with AES-256 bit encryption, ensuring your sensitive tax information remains confidential.
Local Japan Branch
Our dedicated Japan branch team understands both US tax law and the local context, providing personalized service tailored to your situation.
Secure Communication
Use our encrypted messaging platform for all document submissions and communications. No need for unsecured email or physical mail.

Ready to Get Started?

Schedule a consultation with our Japan branch team. Bilingual support in Japanese and English.