🎉 Tax Season Promotion — 50% off ITIN application & ITIN+FIRPTA, plus 50% off EIN application for Japan-based entities (¥10,000), through June 15, 2026
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
- 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
- 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 ¥150,000
- Form 5471 from ¥80,000 (dormant) / ¥100,000 (active)
- 50% discount for US military & veterans
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.
ITIN requires a US tax purpose — credit-card or bank-credit applications will be rejected by the IRS. Review eligibility before applying
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
50% Off — Through June 15, 2026
EIN Application — ¥10,000 for Japan-Based Entities
Fast US EIN application with our 48-hour filing guarantee. Promotional ¥10,000 pricing for Japan-based entities and residents. Optional Form 8832 entity classification election available.
Promotional pricing requires the applying entity or individual to be 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
Our Japan branch publishes flat JPY prices for the bundled services listed on this site — ITIN, EIN, expat tax filing, notary, apostille, 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
Local Support, 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.
- 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?
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]