Suspended until further notice Japan Branch local services and all ITIN services are suspended until further notice
In-person services at our Japan Branch (CAA document verification in Sapporo and Otaru) are paused until further notice, and all of our ITIN services are suspended. Nonresident and expat tax filing and EIN applications continue from our New Jersey head office with JPY pricing.
Japan Services
Copper River Tax Japan
Professional US tax services for individuals in Japan — provided by our New Jersey head office with dedicated Japan-desk support and services priced in Japanese Yen.
Our Services
Comprehensive US Tax Services
Whether you're a Japanese resident filing US taxes, a US citizen living abroad, or a service member stationed in Japan, we have you covered.
- ITIN Application Services
Our Japan CAA service and all of our ITIN services, including new applications and renewals, are suspended until further notice.
Learn more →- 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
- 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
- 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
- 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 ¥300,000
- Form 5471 from ¥160,000 (dormant) / ¥200,000 (active)
- 50% discount for US military & veterans
Suspended until further notice
Service Suspended
ITIN Application Service
Our Japan CAA service and all of our ITIN services are suspended until further notice. Our ITIN guide remains available for reference.
New guide: Who can apply for an ITIN? A practical guide for foreign nonresidents
US Tax ID for Japanese Entities
EIN Application for Japan-Based Entities
Fast US EIN application with our 48-hour filing guarantee. Optional Form 8832 entity classification election available.
Listed pricing applies to entities and individuals based in Japan. See pricing details
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
Transparent pricing in Japanese Yen
We publish flat JPY prices for the bundled services listed on this site — EIN, expat tax filing, and more. The price you see on each service page is the all-in amount.
For any other US tax work (custom returns, advisory, atypical situations), our published pricing policy sets the JPY rate at 100× the equivalent US dollar rate. This is a fixed firm policy, not a live currency conversion — it stays consistent regardless of foreign-exchange movements.
Either way you pay in JPY locally — no wire-transfer fee, no exchange-rate guesswork, no foreign-transaction surcharge.
Why Choose Us
Dedicated Japan Desk, Global Expertise
- Written, At Your Pace
- Communicate via LINE, contact form, or email — no scheduling, no time-zone math. Convenient for clients in Japan.
- Bank-Grade Security
- All communications through our proprietary chat system are protected with AES-256 bit encryption, ensuring your sensitive tax information remains confidential.
- Served by Our Head Office
- Your Japan-desk team at our New Jersey head office understands both US tax law and the local context in Japan, 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?
Send us a message via LINE or email — write at your pace and we'll reply by email. No scheduling needed.
Reach us instantly on LINE
Email us at [email protected]