SERVICES
ITIN & Specialty
ITIN applications and renewals, CPA letters, and U.S. tax compliance for foreign-owned businesses and nonresident individuals.
What Is ITIN & Specialty?
Tax IDs for Every Situation
An Individual Taxpayer Identification Number (ITIN) is an IRS-issued tax processing number for certain people who need a U.S. taxpayer identification number but are not eligible for a Social Security number. It can be relevant to people with U.S. tax filing or reporting responsibilities, including some nonresident taxpayers and dependents or spouses who qualify under IRS rules. Specialty tax services address tax situations that may not fit a straightforward individual or business return.
Castro & Nguyen CPAs, PLLC helps clients understand their tax-related needs, organize supporting documents, and determine which services may be appropriate for their circumstances.
Who Needs It and When?
Support for Complex Tax Needs
ITIN assistance may be useful for people who have a U.S. tax filing requirement but cannot obtain a Social Security number, as well as certain spouses or dependents who meet IRS eligibility rules. Specialty tax support may also be relevant to international taxpayers, people with cross-border tax questions, or individuals whose financial circumstances require additional review.
The correct process depends on the person's situation, the reason an ITIN is needed, and applicable IRS requirements. If you're unsure whether you qualify or which documents you need, discussing your circumstances with a CPA can help clarify the next steps.
What's Included?
Guidance for Your Specific Circumstances
Depending on your needs and the firm's available services, assistance may include discussing ITIN eligibility, reviewing the information needed for an application or renewal, organizing supporting documentation, and coordinating ITIN-related matters with an applicable tax return. Specialty tax support may include reviewing your tax situation, identifying relevant reporting questions, and discussing whether additional tax preparation or advisory services are appropriate.
ITIN applications have specific documentation and submission requirements, so confirm whether the firm can prepare or review your application, verify identity documents as an authorized Certifying Acceptance Agent if applicable, or assist with other parts of the process before engaging its services.
What You'll Need to Bring
Depending on your situation, gather the following information:
Do not send original identity documents or sensitive personal information until the firm confirms the appropriate submission method and requirements.
HOW IT WORKS
How It Works
Simple from the first call.
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Your CPA reviews your needs and quotes a flat fee upfront, with no surprise bills.
We take it from here
Remote or in person, with a secure client portal, e-signatures, and support all year.
CLIENT EXPERIENCES
What Our Clients Say
Real feedback from business owners and individuals who count on us all year.
QUESTIONS & ANSWERS
Common Questions About ITIN & Specialty
Clear answers from Castro & Nguyen CPAs on ITINs and specialty tax situations.
An ITIN is for certain people who need a U.S. taxpayer identification number but are not eligible for a Social Security number. Eligibility depends on the person's circumstances and IRS requirements, so not everyone without a Social Security number automatically qualifies.
Living outside the United States does not automatically prevent someone from qualifying for an ITIN. You must meet the applicable IRS requirements and have a qualifying reason to apply. The required documents and application process depend on your circumstances.
Some ITINs require renewal under IRS rules, while others may remain valid. Whether renewal is necessary depends on your ITIN status and circumstances. Reviewing your existing records can help determine what steps may be needed.
Many ITIN applications are submitted with a federal tax return, although IRS rules provide exceptions for certain situations. Whether an exception applies depends on the reason for the application and the supporting documentation. Confirm the current requirements before submitting an application.
A CPA may be able to review your circumstances and identify relevant tax preparation or advisory needs. The services available depend on the issue involved, so contact Castro & Nguyen CPAs to discuss your situation and confirm whether it falls within the firm's scope.
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