ITIN Application

ITIN Application — IRS Authorized Acceptance Agent

An ITIN (Individual Taxpayer Identification Number) is a tax processing number issued by the IRS to individuals who are not eligible for a Social Security Number (SSN) but need to file U.S. tax returns or claim tax treaty benefits. ITINs are nine-digit numbers beginning with the number 9.

USBase is an IRS Authorized Acceptance Agent, which means we are officially certified by the IRS to certify the authenticity of your identification documents and submit ITIN applications on your behalf — without you needing to mail original passports to the IRS.

Who Needs an ITIN

• Non-U.S. residents who earn U.S.-source income
• International owners of U.S. LLCs and corporations
• Non-resident spouses and dependents claimed on U.S. tax returns
• Foreign individuals receiving rental income from U.S. properties
• Anyone required to file a U.S. tax return without an SSN

Advantages of Using an IRS Authorized Acceptance Agent

• We certify copies of your documents — no original passport mailing required
• Significantly lower rejection rate than self-prepared applications
• Direct IRS submission without delays from document review
• We track your application and follow up with the IRS
• Guidance on which documents are acceptable for certification

ITIN Application Process

Applying for an ITIN involves completing IRS Form W-7, providing certified copies of identification documents, and attaching a completed U.S. tax return (in most cases). The process typically takes 7–11 weeks when filed during peak tax season. As your Acceptance Agent, USBase simplifies every step and ensures your application is complete and accurate — minimizing processing time and eliminating the risk of rejection.