Keep Your Original Documents
We verify your passport in person. No risk of originals being lost in international mail.
🎉 Limited Time Offer - ITIN from ¥29,800
IRS Certified Acceptance Agent
ITIN Application Service
Get your Individual Taxpayer Identification Number safely and quickly. As an IRS-authorized CAA, we verify your documents locally - no need to mail originals to the IRS.
Understanding ITIN
What is an ITIN?
An Individual Taxpayer Identification Number (ITIN) is a tax processing number issued by the IRS for individuals who need to file US tax returns but are not eligible for a Social Security Number. It's a 9-digit number beginning with 9.
Who Needs an ITIN?
- Foreign sellers of US real estate (FIRPTA withholding)
- Nonresident aliens with US-source income
- Spouses or dependents of US citizens/residents
- Foreign investors claiming tax treaty benefits
CAA Advantage
Why Use a Certified Acceptance Agent?
Copper River Tax Japan was approved as an IRS Certifying Acceptance Agent (CAA) on February 14, 2026, and is officially listed on the IRS website. As a CAA, we verify your identity documents locally—no need to mail your original passport to the IRS.
Local Verification
Visit us in Sapporo or Otaru for in-person document verification.
Faster Processing
CAA-certified applications are processed faster. Typical time is 6-8 weeks.
IRS Official Listing
Listed on the IRS Website
Copper River Tax is officially listed on the IRS website as an Acceptance Agent in Japan. You can verify our listing directly on the IRS website.
Source: IRS.gov — Acceptance Agents – Japan (accessed March 22, 2026)
IRS-Listed Acceptance Agent in Hokkaido
Copper River Tax is an IRS-listed acceptance agent based in Hokkaido. Residents across Hokkaido can visit us in Sapporo or Otaru for in-person document verification.
Pricing
Japan Branch Opening Promotion
ITIN Application
ITIN application service with in-person document verification by our IRS-certified CAA.
¥29,800(tax included)
Get Started- W-7 form preparation
- In-person document verification
- IRS submission
- Application tracking
Best Value
ITIN + FIRPTA Tax Return
Complete package for foreign sellers of US real estate. Includes ITIN application, Form 1040-NR filing for FIRPTA withholding, and state tax return.
¥49,900(tax included)
Get Started- Everything in ITIN Application
- Form 1040-NR preparation & filing
- FIRPTA withholding refund claim
- State tax return included
- Japanese language support
Promotion pricing valid for applications submitted during the Japan branch opening period.
Important: ITIN Expiration Rules
ITINs have specific expiration rules:
- ITINs not used on a tax return for 3 consecutive years expire
- ITINs issued before 2013 may have already expired
- Expired ITINs can be renewed with a new application
FAQ
Frequently Asked Questions
- How long does it take to get an ITIN?
- Processing times typically range from 8-12 weeks after the IRS receives your application. As a CAA, we can expedite document verification, but IRS processing time is outside our control.
- Do I need to send my passport to the IRS?
- No! As an IRS-authorized Certified Acceptance Agent, we verify your identity documents in person. Your original passport never leaves your hands.
- Can I apply for an ITIN online?
- The W-7 application must be submitted to the IRS by mail or through a CAA. We handle the entire submission process for you after in-person document verification in Sapporo or Otaru.
- What documents do I need for ITIN application?
- You'll need a valid passport and the tax return that requires the ITIN. Depending on your situation, additional documentation such as a marriage certificate may be required.
- My ITIN has expired. Can I renew it?
- Yes, ITINs that haven't been used on a federal tax return for three consecutive years expire. We handle ITIN renewals using the same in-person verification process.
- Is Copper River Tax an officially recognized IRS acceptance agent?
- Yes. Copper River Tax is listed on the official IRS website as an Acceptance Agent in Japan. You can verify our listing directly at irs.gov/individuals/international-taxpayers/acceptance-agents-japan.
- Can I get ITIN document verification in Hokkaido?
- Yes. Copper River Tax is an IRS-listed acceptance agent based in Hokkaido. Our offices in Sapporo and Otaru provide in-person ITIN document verification for residents across Hokkaido.
Contact Us
ITIN Service Inquiry
Please fill out the form below and our team will get back to you within 1-2 business days.