The individual taxpayer identification number is a nine-digit number issued by the Internal Revenue Service to people not eligible for a Social Security Number. It is used strictly for tax purposes, allowing individuals to file a federal income tax return even if they do not have work authorization or citizenship. An ITIN will enable individuals to comply with U.S. tax law and keep accurate records with the Internal Revenue Service.

In New York City, IRS-certified agents are essential in supporting applicants who need an individual taxpayer identification number. Many immigrants, international students, and nonresident individuals may not be familiar with federal requirements, so having trained professionals helps prevent errors and delays. These agents guide applicants through submitting accurate forms and required documentation, making it easier to meet federal tax purposes. Their work ensures that families and individuals can fulfill their legal obligations.

In 2025, taxpayers should know that the Internal Revenue Service continues to emphasize complete and timely filings. Updated instructions will affect how applicants prepare materials, and the IRS expects stricter documentation standards. By understanding the role of ITINs and the support available from certified agents, applicants can better prepare for the upcoming tax year.

What Is an Individual Taxpayer Identification Number?

The United States tax system requires accurate identification for every person who files a federal income tax return. For many individuals who cannot obtain a Social Security Number, the Internal Revenue Service created the Individual Taxpayer Identification Number. The taxpayer identification number ITIN is an alternative identifier that allows applicants to comply with federal law while maintaining their immigration status. It has become an essential tool for noncitizens and their family members who are part of the U.S. economy.

ITIN Number

The individual taxpayer identification number (ITIN) is a nine-digit identifier that the Internal Revenue Service issues. The format resembles an SSN, but ITINs always begin with nine. This distinction helps the IRS track filings while preventing confusion with other taxpayer records. The ITIN ensures that applicants without an SSN can still meet reporting obligations.

Purpose

The ITIN is used exclusively for tax purposes. It does not authorize employment, grant Social Security benefits, or alter a person’s immigration status. Its role is focused on enabling individuals to file returns, report income, and claim certain credits when eligible. By assigning ITINs, the IRS creates a uniform system that ensures fair taxation and accurate recordkeeping for every applicant.

Eligible Applicants

Several categories of people may need an ITIN. Nonresident aliens who must file returns or claim treaty benefits represent one group. International students and researchers who receive taxable income in a tax year also require an ITIN. Family members such as spouses or dependents of U.S. citizens or resident aliens often apply when they are listed on a return or qualify for certain credits. Foreign investors who receive U.S. income subject to withholding are another common group. Everyone must provide valid documents confirming identity and foreign status before the IRS issues the number.

Eligibility and Requirements for an ITIN

An individual taxpayer identification number is required for certain groups of people who must meet federal tax obligations yet cannot obtain a Social Security Number. Understanding who qualifies for an ITIN is essential to avoid errors and delays in filing. Applicants must confirm their eligibility, provide the correct proof of identity and foreign status, and recognize situations that call for a new or renewed application.

Applicants generally qualify if they fall into one of several categories. Eligibility is not based on immigration status but on whether a person must file a federal income tax return or claim allowable credits. Family members of taxpayers, such as spouses or dependents, may also require an ITIN to appear on a joint or household return.

Situations requiring an ITIN include:

  • Nonresident aliens: Must file a return for U.S. income or claim treaty benefits.

  • Resident aliens without SSNs: Meet the substantial presence test, but cannot obtain a Social Security Number.

  • Spouses and dependents: Family members of citizens or resident aliens included on a return.

  • Foreign investors: Applicants who receive U.S. income subject to withholding.

  • Exception cases: Situations where a person needs to submit tax documents without filing a complete return, such as reporting mortgage interest.

Required proof of identity and foreign status includes:

  • Passports and national identification cards.

  • U.S. or foreign driver’s licenses.

  • Birth certificates for dependents.

  • School or medical records for younger applicants.

Meeting these requirements ensures that an applicant can qualify for a valid ITIN. Proper documentation reduces the chance of rejection and allows the Internal Revenue Service to issue the number efficiently. Thorough preparation increases the chance that refunds and credits linked to a federal return are processed smoothly.

How to Apply for an ITIN

The application for an IRS individual taxpayer identification number is completed through Form W-7, which the Internal Revenue Service requires for every ITIN application. Each applicant must follow the process carefully to ensure the submission is accepted and processed promptly. A straightforward step-by-step approach allows applicants to provide the correct information, include valid documentation, and meet the federal requirements that lead to the issuance of a number.

Step 1: Prepare the application

Complete Form W-7 with accurate details such as full legal name, foreign address, and U.S. mailing address. Each applicant should identify the reason for requesting an ITIN, such as filing a federal tax return or being listed as a dependent.

Step 2: Collect supporting documents

Gather documents that prove both identity and foreign status. Common examples include a passport, national identification card, or birth certificate. Dependents may also need to provide school or medical records.

Step 3: Attach the federal return

Unless the applicant qualifies for an exception, a completed federal income tax return must be attached to the application. The IRS uses the return to confirm the purpose of the ITIN.

Step 4: Submit the application package

Mail the complete package to the Internal Revenue Service ITIN Operations office in Austin, TX. Applicants may also deliver materials through an in-person appointment at an IRS Taxpayer Assistance Center or through a Certified Acceptance Agent.

Step 5: Wait for processing

The IRS will review the form, confirm identity, and return original documents. Applicants typically receive their ITIN within several weeks, although timing can extend during peak filing periods.

The IRS instructions for Form W-7 explain each line of the application and clarify the types of documentation that meet federal standards. Applicants who follow these instructions, assemble complete packages, and submit them to the correct Austin, TX location can expect smoother processing and fewer delays. Careful attention to detail throughout each step supports timely approval and helps ensure compliance with federal tax requirements.

IRS Taxpayer Assistance Center

Applicants seeking help with the ITIN process often require more than written instructions. An IRS Taxpayer Assistance Center offers direct support for individuals who must understand requirements clearly and confidently submit documents. These offices provide a practical setting where applicants can interact with trained representatives and resolve questions about eligibility, forms, and supporting documentation.

Services Provided

An IRS Taxpayer Assistance Center offers in-person help to individuals who require guidance with an ITIN application or federal income tax matters. These offices allow applicants to submit documentation directly, receive clarification on eligibility, and obtain confirmation that forms are complete before mailing. Visiting a center can reduce mistakes, especially for applicants who struggle with document preparation or need support with language and procedural details.

Appointment Requirements

Every IRS Taxpayer Assistance Center operates on an appointment-only basis. Walk-in visits are no longer accepted, meaning applicants must schedule a time in advance. The appointment system helps manage demand and ensures that each person has enough time with an IRS representative. When booking an appointment, applicants should confirm the purpose of the visit, such as submitting an ITIN application, to ensure the correct resources are available during the scheduled session.

How to Contact and Locate Centers

Applicants may contact the IRS directly to schedule an appointment at the nearest Taxpayer Assistance Center. Locations are spread across New York City and other areas, with specific offices designated to handle ITIN-related services. Some centers coordinate with the State Department for identity verification in cases involving foreign passports or other official documents. Contact information for each location is available through the IRS, and applicants should check availability well before critical deadlines.

Filing a Federal Income Tax Return with an ITIN

Completing a federal income tax return with an ITIN involves many of the same steps as filing with a Social Security Number. However, applicants must pay special attention to accuracy and documentation. A valid ITIN must appear on the return to ensure the Internal Revenue Service can verify the identity of each taxpayer and dependent listed. Missing or incorrect numbers often result in processing delays, refund denials, or additional verification requests from the IRS.

Taxpayers using an ITIN can access several vital benefits when filing correctly. A properly included ITIN allows individuals to report income, fulfill their obligations, and qualify for certain credits that help reduce tax liability. Family members such as spouses or dependents may also appear on the return with ITINs, provided they meet eligibility requirements.

Key credits available with a valid ITIN include:

  • Child Tax Credit: A refundable or partially refundable credit that supports eligible families with dependent children.

  • Credit for Other Dependents: A nonrefundable credit for family members who do not qualify for the Child Tax Credit.

  • American Opportunity Tax Credit: A partially refundable education credit available when conditions are met.

  • Premium Tax Credit: A refundable credit that helps eligible taxpayers offset the cost of health insurance purchased through a marketplace.

Common mistakes taxpayers should avoid when filing include:

  • Submitting returns with expired or invalid ITINs.

  • Failing to check names and birthdates against IRS records.

  • Claiming ineligible dependents without proof of residency or relationship.

  • Forgetting to sign the return or include all schedules that support the claim for credits.

A valid ITIN allows the IRS to process the return accurately, issue any refund owed, and recognize credit eligibility. Careful attention to details such as proper identification, verified dependents, and complete schedules helps taxpayers avoid rejection and maintain compliance with federal requirements.

The Form W-7 Application Process

Applicants who need an ITIN must complete Form W-7 accurately and provide all required documentation. The process is straightforward when each step is followed carefully and supporting records are prepared in advance. A complete submission ensures that the IRS can promptly verify identity, confirm eligibility, and issue the ITIN.

Step 1: Fill Form W-7

The individual must provide accurate information on all lines, including legal name, foreign address, and U.S. mailing address. Each person applying must check the correct reason box that matches their situation, such as filing a federal income tax return or claiming treaty benefits.

Step 2: Sign the application

Every applicant must sign Form W-7. Parents or guardians may sign for minor dependents. Unsigned applications are automatically rejected, so signatures are essential.

Step 3: Submit required documentation

Applicants must provide proof of identity and foreign status. A passport is the most common document, but national identification cards, U.S. visas, and birth certificates are also accepted. Dependents must often include medical or school records, particularly when under 18. Each document must be current, legible, and meet IRS standards.

Step 4: Mail the package

The completed application, tax return (unless an exception applies), and supporting documents should be mailed to the IRS ITIN Operations office in Austin, TX. Applicants may also submit the package through a Certified Acceptance Agent or schedule an appointment at an IRS Taxpayer Assistance Center.

Step 5: Receive the ITIN

The IRS will review the application and return the original documents. Processing typically takes about seven weeks, though it can extend to 11 weeks during peak tax filing season. Applicants who check their packages carefully before submission will likely meet requirements and receive their ITIN without delays.

Choosing an ITIN Agent in New York City

Applicants often turn to professional assistance when navigating the ITIN process, especially in a city as diverse and complex as New York. ITIN agents in New York City 2025 support individuals uncertain about eligibility, documentation, or submission requirements. Selecting the right agent ensures that applications are handled carefully, reducing the possibility of rejection or delays. Two main categories of agents serve applicants: Acceptance Agents and Certified Acceptance Agents.

Acceptance Agents

Acceptance Agents guide applicants through completing Form W-7 and assembling the necessary documentation. Their role is limited because they cannot verify original identification. Applicants working with these agents must still mail original documents to the IRS, which can create delays or risks if documents are lost during transit.

Certified Acceptance Agents (CAAs)

Certified Acceptance Agents have expanded authority compared to regular agents. CAAs can review documents, verify identity, and return original papers immediately to the applicant. This service reduces the stress of mailing passports or national identification cards directly to the IRS. CAAs also submit a Certificate of Accuracy with the application, ensuring the information has been checked before reaching the IRS.

Services Provided

ITIN agents in New York City in 2025 often support families who need multiple applications completed simultaneously. They verify details, confirm that documents meet IRS standards, and explain how an individual qualifies for an ITIN as a dependent or spouse. Agents also act as a point of contact, helping applicants obtain accurate information and understand requirements linked to Social Security Number alternatives. The IRS guidance for ITIN agents outlines standards and training obligations for certified representatives.

Selecting a knowledgeable ITIN agent improves the likelihood of receiving a valid number efficiently. Applicants who rely on trained professionals gain confidence that their submissions meet IRS expectations, reducing unnecessary setbacks during the application process.

ITIN Renewal and Expiration Rules

Renewing an individual taxpayer identification number is essential to maintaining tax compliance. A valid ITIN allows applicants to continue filing federal income tax returns, claim eligible credits, and receive refunds without disruption. Understanding when an ITIN expires and the steps necessary for renewal ensures that applicants remain in good standing with the Internal Revenue Service. Accurate documentation and preparation form the foundation of a smooth renewal process.

When ITINs Expire

  • ITINs expire if not used on a federal income tax return for three consecutive years.

  • Numbers issued before 2013 that were not renewed as scheduled are no longer valid.

  • An expired ITIN cannot be used to file a return, claim credits, or obtain a refund.

Renewal Checklist

  • Complete Form W-7 for renewal, ensuring all information matches existing IRS records.

  • Submit the renewal application during the same tax year when the number is required for a filing.

  • Confirm that the mailing address is current to avoid receiving notices or correspondence delays.

  • Verify that every applicant in a household, including dependents, renews as needed to maintain eligibility for credits.

  • Unless an exception applies, include a federal income tax return with the renewal package.

Supporting Documents Needed

  • Provide proof of identity, such as a passport, national identification card, or U.S. driver’s license.

  • Supply documents confirming foreign status, including visas or foreign birth certificates.

  • Dependents may use school records or medical records if they meet IRS standards.

  • Ensure that all documents are valid, unexpired, and legible before submission.

  • Applicants may obtain guidance from the IRS ITIN information page, which details requirements and acceptable documentation.

Renewing an ITIN on time prevents complications that delay refunds and block credits. Applicants who prepare thoroughly protect their eligibility and ensure their filings remain accurate for the tax year.

Common Problems and IRS Notices

Applicants who file for an ITIN may encounter obstacles that result in delays or rejections. The Internal Revenue Service communicates these issues through specific notices that identify the problem and outline the steps required to resolve it. Recognizing the most frequent mistakes and understanding the meaning of each notice allows applicants to take corrective action quickly and maintain compliance with federal requirements.

Common Mistakes

  1. Using an expired or invalid SSN on related forms.

  2. Providing an incorrect mailing address prevents IRS correspondence from reaching the taxpayer.

  3. Submitting poor-quality document copies that cannot be verified.

  4. Sending expired identification or records that do not meet current standards.

  5. Failing to check that the names and dates of birth match across all documents.

  6. Omitting required signatures on Form W-7 or on the attached federal return.

IRS Notices

  1. CP 565 – Confirms approval of the ITIN application and assigns the number for use in federal filings.

  2. CP 566 – Indicates the application is in suspense because the IRS needs additional information or documentation to complete processing.

  3. CP 567 – States that the ITIN application has been rejected due to missing, incorrect, or invalid details that could not be verified.

Applicants who receive a notice should respond without delay. Each person must supply accurate documentation, verify that every record matches IRS requirements, and meet the deadlines specified in the letter. Careful attention to these details helps ensure that the ITIN is issued or renewed without further obstacles and allows the taxpayer to remain in good standing.

Practical Examples in New York City

The diverse population of New York City highlights how ITIN rules apply across many circumstances. Families, students, investors, and spouses encounter the system in ways that reflect their unique needs. The following examples show how applicants complete the ITIN application process, verify eligibility, and receive the benefits linked to federal compliance.

  • Immigrant family filing jointly: A household where one spouse has a Social Security Number and the other requires an ITIN can file a joint federal income tax return. Doing so allows the family to claim certain credits, improve refund outcomes, and establish complete reporting for the tax year.

  • International student with fellowship income: A graduate student who enters the United States with foreign status may receive taxable fellowship income. To request an ITIN, the student submits Form W-7 with a passport and a valid visa. This application ensures compliance with reporting rules and prevents penalties.

  • Nonresident investor claiming treaty benefits: An international investor who owns rental property in Manhattan may qualify for reduced tax withholding under treaty provisions. An ITIN enables the person to file correctly, claim allowable treaty benefits, and receive a refund when income exceeds withholding obligations.

  • Spouse of a U.S. citizen filing jointly: A foreign spouse without an SSN may apply for an ITIN to appear on a joint return with their citizen partner. This process allows the couple to select the married filing jointly status and qualify for credits that apply to families.

These examples reveal how different applicants depend on ITINs to meet obligations and protect their eligibility for refunds or credits. Each scenario highlights the role of preparation and accurate filing in meeting IRS requirements.

Frequently Asked Questions

What is the difference between an ITIN and the IRS Individual Taxpayer Identification?

The IRS issues the individual taxpayer identification number (ITIN) to people not eligible for a Social Security Number. The ITIN is used exclusively for tax reporting and does not provide work authorization or immigration benefits. It enables applicants to file returns, pay taxes, and claim certain credits when they qualify. It serves as an essential tool for federal compliance while maintaining immigration status.

Can I have both an ITIN and a Social Security Number?

A person cannot use both an ITIN and a Social Security Number at the same time. Once the Social Security Administration issues a Social Security Number (SSN), the ITIN becomes invalid for filing purposes. The IRS requires applicants to use the SSN moving forward. Filing with both identifiers can lead to processing delays, refund denials, or additional IRS inquiries that must be resolved before acceptance.

Who should apply for an IRS individual taxpayer identification number?

Individuals not eligible for a Social Security Number but required to file a federal return must apply for an IRS Individual Taxpayer Identification Number (ITIN). This includes nonresident aliens, international students, dependents, and spouses of U.S. citizens. Submitting Form W-7 with proper documents allows applicants to meet tax obligations. Each person listed on a return must have an SSN or an ITIN.

Can family members use an ITIN to claim credits?

Family members such as spouses or dependents may use ITINs to appear on federal income tax returns. When rules are met, households can claim credits like the Child Tax Credit or the Credit for Other Dependents. Each applicant must provide proof of identity and eligibility. If required documents are missing or incomplete, the IRS will reject the application and deny related claims.

How long does it take to receive an ITIN?

Processing time for an ITIN varies depending on the time of year and submission method. Applicants generally receive their ITIN within seven weeks of mailing a complete package to the IRS. During peak season, the period may extend to eleven weeks. Working with a Certified Acceptance Agent or scheduling an IRS appointment can reduce common errors that extend waiting times.

Does holding an ITIN change immigration or employment rights?

Holding an ITIN does not affect immigration status or employment authorization. The IRS created the ITIN for tax reporting only. It allows individuals to file a federal return and comply with U.S. tax laws, but does not grant legal work permission or eligibility for Social Security benefits. Applicants must maintain their immigration records separately while using the ITIN solely for tax compliance.

Can an expired ITIN be used on a federal return?

An expired ITIN cannot be used to file a federal return, claim credits, or request a refund. The IRS requires taxpayers to renew expired numbers before submitting documents for a new tax year. Renewal is done through Form W-7 with supporting identification and proof of foreign status. Taxpayers should confirm the ITIN’s validity in advance to avoid processing delays or rejections during the filing season.