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.

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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. As a CAA, we verify your identity documents locally—no need to mail your original passport to the IRS.

Keep Your Original Documents

We verify your passport in person. No risk of originals being lost in international mail.

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.

Pricing

Japan Branch Opening Promotion

ITIN Application

ITIN application service with in-person document verification by our IRS-certified CAA.

¥29,800(tax included)

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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

ITIN Service Inquiry

Please fill out the form below and our team will get back to you within 1-2 business days.

Thank you for your interest in our services. We look forward to assisting you with your ITIN application.

Service Type *

CAA Service Only

For those who already have a tax return prepared by another professional

CAA + FIRPTA Package

Complete package for US real estate sale withholding refund

CAA + Custom Return Package

CAA service with customized tax return preparation

Other / Consultation

General inquiry or consultation request

Full Name (Japanese) (Optional)I don't have a Japanese name

Furigana (Katakana) (Optional)

Full Name (English/Romaji) *

Alphabetic characters only (A-Z). This will be used for official documents.

Email Address *

Phone Number (Optional)

Additional Message (Optional)

Your inquiry has been received. We will respond as soon as possible.

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