The Internal Revenue Service issues an Individual Taxpayer Identification Number (ITIN) to individuals who need a U.S. taxpayer identification number but are not eligible for a Social Security Number. For foreign scholars and professors, this number plays a vital role in complying with federal tax laws, especially when wages are paid, stipends are received, or family members must be claimed on a federal income tax return. Without an assigned ITIN, applicants risk delays, notices, or rejection letters from the IRS that can complicate their ability to meet tax responsibilities.

Academic professionals often arrive in the United States with unique financial circumstances. They may receive research grants, taxable scholarships, or consulting income, all of which must be reported for tax purposes. Because these individuals are not U.S. citizens and often maintain a different immigration status, an ITIN ensures they remain eligible to comply with federal rules. The IRS receives applications throughout the tax season, and the process requires accurate documentation, such as passports, medical records for dependents, and other proof of foreign status.

The ITIN application process may seem complicated, but it can be managed effectively with proper preparation. Scholars and professors who prepare their paperwork carefully can comply with federal requirements, reduce the chance of errors, and maintain their eligibility for available tax benefits. This guide will explain each step in detail, from eligibility and application to renewal and common issues, so readers can confidently move forward.

Eligibility and Federal Tax Responsibilities

Foreign scholars and professors conducting research or teaching in the United States often face detailed tax responsibilities. The Internal Revenue Service requires anyone who earns taxable income but does not qualify for a Social Security Number to apply for an Individual Taxpayer Identification Number. 

This ensures compliance with federal tax laws while allowing applicants to report wages paid, claim dependents, and receive certain income tax credits. Understanding eligibility rules and the responsibilities tied to an assigned ITIN helps academic professionals prepare accurate tax records and maintain good standing with federal authorities.

Who Qualifies as an ITIN Applicant

Eligibility for an ITIN applies to several everyday situations faced by academic professionals. Visiting professors, exchange scholars, and research fellows are often considered ITIN applicants if they receive stipends, grants, or consulting fees. 

Dependents such as spouses or children may also require ITINs if they are claimed on a federal income tax return. Proof of foreign status and supporting documentation are critical parts of the application process, as the IRS issues ITINs only when eligibility is clearly demonstrated.

  • Visiting professors and researchers must obtain ITINs when receiving taxable compensation, stipends, or royalties from U.S. sources.

  • Exchange scholars on J-1 visas are considered eligible applicants if they earn allowances, wages, or honoraria during their stay.

  • When listed on a tax return, spouses and family members require ITINs for dependent claims or income tax credits.

  • Nonresident aliens with investment income from U.S. accounts or royalties must prepare applications to comply with federal tax laws.

  • Individuals claiming treaty benefits must file returns with ITINs, even when some income is tax-exempt.

  • Scholars with multiple sources of income, such as grants, university wages, and consulting agreements, must document each income stream.

Key Federal Tax Responsibilities

Tax responsibilities for foreign scholars extend beyond filing annual federal income tax returns. Applicants must maintain accurate tax records, renew ITINs when necessary, and respond promptly to any notice from the IRS. Scholars must also prepare documentation that verifies family members’ eligibility when dependents are claimed. Proper compliance protects immigration status, prevents delays in processing, and ensures access to tax benefits granted under federal tax laws.

Meeting eligibility standards and fulfilling federal tax responsibilities require careful preparation. Each applicant should gather documentation, provide proof of foreign status, and confirm accuracy before submitting to the IRS. With these steps completed, foreign scholars and professors can obtain assigned ITINs, comply with their obligations, and focus on their academic work without unnecessary interruptions.

Federal Income Tax Return and ITIN Filing

Foreign scholars and professors must file federal income tax returns accurately when they receive income from U.S. sources. The Internal Revenue Service requires an ITIN applicant to attach the application to a tax return during the filing process unless a specific exception applies. 

Filing obligations cover wages paid, taxable stipends, and fellowship grants, and the IRS issues ITINs only after reviewing all required documentation. Understanding each step ensures applicants remain compliant with federal tax laws and protect their immigration status while maintaining eligibility for income tax credits.

Step 1: Prepare Records and Documentation

Before starting the application, scholars should gather tax records, proof of foreign status, and supporting documentation. Standard documents include passports, visas, and birth certificates for dependents. Applicants should also collect evidence of income, such as wage statements or letters from sponsoring institutions. These items must be current and legible for the IRS to accept them.

Step 2: Complete the Correct Tax Return

Applicants filing as nonresident aliens generally use Form 1040-NR, while resident aliens under the substantial presence rules may use Form 1040. Scholars must complete the return, reporting all income categories subject to federal tax laws. Income from grants, consulting, or royalties must be disclosed in addition to wages paid by universities. Proper completion of the return ensures the IRS receives a valid filing for processing the ITIN application.

Step 3: Attach the ITIN Application

The completed Form W-7 must be attached to the tax return when filing. Applicants must provide eligibility evidence for the ITIN request, including foreign status documents and original identification. Family members, such as a spouse or dependents, require separate applications. The IRS reviews each form carefully before issuing an assigned ITIN.

Step 4: Submit to the IRS and Await Notice

Applicants mail the package to the IRS processing center in Austin, Texas, or submit it through an in-person filing method. The IRS receives the return, reviews the application, and issues a notice once the ITIN is assigned. Processing may take longer during tax season, especially for international mail. Applicants should keep copies of all submitted materials for their records.

Step 5: Maintain Compliance After Filing

Once the ITIN is assigned, scholars must continue filing federal income tax returns annually if they earn income from U.S. sources. Each return should include the ITIN, updated tax records, and documentation supporting any credits claimed. Timely filings safeguard eligibility for income tax credits, preserve compliance with federal tax laws, and prevent complications that may affect immigration status.

Completing each step accurately helps foreign scholars and professors comply with tax responsibilities without delays or rejections. Careful preparation ensures the IRS can confirm eligibility and issue an ITIN that aligns with the federal income tax return. Once assigned, the ITIN allows academic professionals to meet their obligations while continuing their work in the United States.

ITIN Application Process with the Internal Revenue Service

The Internal Revenue Service requires a complete and well-documented application before issuing an Individual Taxpayer Identification Number. For foreign scholars and professors, the process demands precision to avoid delays and fully comply with federal tax laws. Each applicant must provide accurate records, demonstrate eligibility, and ensure the IRS receives all necessary materials during the application process.

  • Gather essential documentation: Applicants must collect original identification and proof of foreign status before preparing the application. Acceptable items include passports, national identity cards, and medical records for dependents. Each record must be valid, unexpired, and consistent with the personal information listed on the forms.

  • Complete Form W-7 accurately: Applicants must carefully complete Form W-7, selecting the correct reason for applying. Foreign scholars usually indicate filing a federal income tax return or requesting treaty benefits. All information, including names and dates of birth, must match the supporting documentation.

  • Attach a federal income tax return: A completed Form 1040 or Form 1040-NR is generally submitted with the ITIN request. The return demonstrates a legitimate tax purpose and helps the IRS verify eligibility. Dependent claims, wage information, and other related records should be included.

  • Submit the complete application package: The applicant sends the materials to the IRS processing center in Austin, Texas, or delivers them through an IRS Taxpayer Assistance Center or a Certified Acceptance Agent. The package must contain the tax return, Form W-7, and all supporting documentation. Copies should be kept to safeguard personal tax records.

  • Receive the IRS decision: Once received, the IRS reviews the application, verifies the documentation, and assigns an ITIN when requirements are satisfied. The applicant will receive a notice with the assigned ITIN, which must be used in all future filings. Processing can take longer during tax season or when applications originate outside the United States.

Organizing the application process into clear actions helps foreign scholars and professors meet federal requirements efficiently. The IRS can issue an ITIN without unnecessary delays by submitting complete and accurate records. Applicants seeking official guidance on preparing and filing Form W-7 may consult the IRS resource About Form W-7.

Acceptance Agents and IRS Taxpayer Assistance Centers

Foreign scholars and professors often prefer in-person support when applying for an Individual Taxpayer Identification Number. The Internal Revenue Service allows applicants to work with Certified Acceptance Agents or visit Taxpayer Assistance Centers to simplify the process. Each option has distinct features that can influence how quickly an applicant obtains an assigned ITIN and how securely documents are handled.

Certified Acceptance Agents (CAAs)

These authorized representatives help applicants complete ITIN requests by verifying identity and foreign status documents. CAAs can return original records immediately after verification, which reduces the risk of losing necessary documentation. Many CAAs provide additional services, such as preparing federal income tax returns or assisting with treaty benefit claims.

IRS Taxpayer Assistance Centers (TACs)

TACs are official IRS offices where applicants can submit ITIN applications directly. They require scheduled appointments and can authenticate documents on-site. This option is practical for applicants who prefer direct government oversight and assurance that the Internal Revenue Service receives their materials promptly.

Choosing Between CAAs and TACs

The choice depends on personal circumstances, including location, convenience, and whether applicants require additional tax support. While TACs offer free services, CAAs often provide greater flexibility for scholars balancing research, teaching, and family responsibilities. Both options ensure compliance with federal tax laws and help applicants complete the process correctly.

Selecting the proper support method can make the ITIN application more efficient and less stressful for academic professionals. Whether working with a Certified Acceptance Agent or scheduling time with a Taxpayer Assistance Center, applicants gain confidence that their documentation is managed correctly.

Filing with the Internal Revenue Service IRS

After issuing an Individual Taxpayer Identification Number (ITIN), foreign scholars and professors must use it in all future tax filings. The Internal Revenue Service requires every ITIN applicant to consistently report wages paid, research stipends, and other U.S.-source income. Accurate recordkeeping and timely return submission are essential for compliance with federal tax laws. Proper filing also ensures eligibility for income tax credits and helps maintain good standing with immigration requirements.

Filing Forms and Key Deadlines

Filing obligations vary depending on the applicant’s residency status. Nonresident scholars often complete Form 1040-NR, while those meeting substantial presence tests may use Form 1040. The IRS issues guidance each tax season with essential filing dates, including April 15 for most residents and June 15 for nonresident aliens abroad. Organizing tax records helps applicants respond quickly if the IRS sends a notice requesting additional documentation.

Filing Essentials for ITIN Holders

  • Proof of eligibility: Each return should include supporting documentation that aligns with the assigned ITIN, such as passports, visas, or national identity records.

  • Spouse and dependent claims: Family members must have valid ITINs and sometimes provide medical records or school documents to confirm residency status.

  • Income categories: Scholars should disclose stipends, grants, consulting fees, royalties, and wages from U.S. universities.

  • Tax credits: Eligible applicants may claim the Child Tax Credit or treaty-based exemptions, provided all conditions are met.

  • Recordkeeping: Applicants must retain copies of tax returns, submission receipts, and related correspondence from the Internal Revenue Service for future reference.

Maintaining Compliance Beyond Filing

Compliance extends beyond the initial submission. Scholars must renew expired ITINs promptly to prevent delays in processing returns and to ensure that refunds or credits are not withheld. Each applicant should also confirm that information on returns matches the data associated with the assigned ITIN. Maintaining consistency across tax records protects applicants from unnecessary complications during review by the IRS.

Filing correctly with the Internal Revenue Service is more than a legal requirement; it demonstrates accountability and safeguards access to benefits allowed under federal tax laws. Scholars and professors who prepare thoroughly, provide accurate information, and maintain proper documentation effectively fulfill their tax responsibilities. By treating each filing as an opportunity to confirm compliance, academic professionals can confidently continue their work while meeting all obligations tied to their presence in the United States.

Tax Obligations, Benefits, and Renewal Rules

Foreign scholars and professors who receive income from U.S. sources have unique tax responsibilities that extend beyond the initial ITIN application. Compliance with federal tax laws involves accurate reporting, timely renewals, and careful documentation of all income categories. Understanding obligations and potential benefits ensures academic professionals avoid disruptions while preserving eligibility for valuable credits and treaty advantages.

Tax Responsibilities for ITIN Holders

Every ITIN applicant must file a federal income tax return when taxable income exists, regardless of the amount earned. Wages paid, stipends, royalties, and consulting income must be disclosed to the Internal Revenue Service. Scholars are also responsible for maintaining detailed tax records, including supporting documentation that verifies eligibility for exemptions and credits. Responding promptly to any IRS notice is critical to keeping applications and filings current.

Access to Income Tax Credits and Treaty Benefits

Foreign scholars may qualify for income tax credits if they meet established conditions. The Child Tax Credit is available for dependents with valid ITINs, provided additional requirements such as residency or documentation are satisfied. Specific treaty provisions may reduce or exempt portions of income, though these benefits must be appropriately reported on federal tax returns. Accurate filings safeguard both eligibility and immigration status.

Renewal and Expiration of ITINs

Assigned ITINs expire when not used on a federal return for three consecutive years. Renewal requires a new Form W-7, updated identification, and a current tax return to confirm continuing need. Expired ITINs can delay refund processing and limit credit access, highlighting the importance of renewing before filing deadlines. Scholars who change names or marital status must include relevant documentation, such as marriage certificates or legal records, when submitting renewal requests.

Meeting tax obligations, applying for available benefits, and renewing ITINs promptly demonstrate accountability to the Internal Revenue Service. These practices help ensure accurate compliance, protect future eligibility, and reduce complications for scholars and their family members. When academic professionals prepare carefully and follow IRS requirements closely, they create a stable framework for managing income and fulfilling long-term tax responsibilities in the United States.

ITIN vs. Social Security Number (SSN)

Foreign scholars and professors often encounter confusion when distinguishing an Individual Taxpayer Identification Number from a Social Security Number. Both serve as identification for federal tax purposes, yet they are not interchangeable and carry different rights and limitations. Understanding the distinctions ensures applicants comply with Internal Revenue Service requirements and avoid using the wrong identifier in filings or correspondence.

Core Differences Between ITIN and SSN

The following table outlines key differences between an ITIN and a Social Security Number, focusing on eligibility, purpose, and benefits. This comparison clarifies for academic professionals who must determine which identification applies to their situation and the obligations tied to each.

  • Eligibility
    • ITIN: For nonresident and resident aliens who do not qualify for an SSN, including dependents and spouses
    • SSN: For U.S. citizens, permanent residents, and individuals authorized to work in the United States
  • Purpose
    • ITIN: Used strictly for federal income tax return filings and compliance with U.S. tax laws
    • SSN: Used for employment authorization, Social Security benefits, and federal/state tax filings
  • Employment Rights
    • ITIN: Does not authorize employment in the United States
    • SSN: Grants permission to work legally in the U.S. when issued to eligible individuals
  • Access to Benefits
    • ITIN: Provides eligibility for limited tax benefits such as the Child Tax Credit or treaty exemptions
    • SSN: Grants eligibility for Social Security benefits, Medicare, and other federal programs
  • Issuing Authority
    • ITIN: Issued by the Internal Revenue Service (IRS)
    • SSN: Issued by the Social Security Administration (SSA)
  • Expiration and Renewal
    • ITIN: Expires after three consecutive years of nonuse; renewal required using Form W-7
    • SSN: Permanent; does not expire once issued
  • Why the Distinction Matters

    Recognizing the distinctions between these two identifiers helps scholars avoid misapplication during tax season. The ITIN exists to meet tax responsibilities when wages are paid or other income requires reporting, but the person is not eligible for an SSN. By understanding their assigned ITIN alongside the limitations of employment and benefit eligibility, foreign scholars maintain compliance and secure proper tax treatment while pursuing their academic goals in the United States.

    Institutional Role and Common IRS Issues

    Universities and research institutions play a significant role in helping foreign scholars and professors comply with federal tax responsibilities. Many institutions provide guidance on ITIN applications, offer access to Certified Acceptance Agents, and help scholars prepare accurate documentation for the Internal Revenue Service. Institutional support reduces filing errors, ensures scholars remain eligible for income tax credits, and strengthens compliance with federal tax laws.

    Institutional Support for ITIN Applicants

    Academic institutions often create structured programs to assist ITIN applicants in navigating the requirements. These efforts may include orientation sessions, written guides, or assistance with Form W-7 and federal income tax returns. Institutions may also encourage faculty and visiting scholars to keep detailed tax records and respond promptly to any notice from the IRS.

    • Document verification assistance: Many universities provide staff to help scholars review their supporting documentation before submission.

    • Access to Certified Acceptance Agents: Some institutions employ CAAs who can authenticate documents on-site, reducing the need to send originals to the IRS.

    • Workshops and training: Institutions often host sessions on filing requirements, tax credits, and renewal rules for assigned ITINs.

    • Dependent support services: Assistance is provided to help spouses and family members obtain ITINs when claimed on a federal income tax return.

    Common IRS Issues Faced by Scholars

    Despite institutional support, many scholars still encounter difficulties working with the Internal Revenue Service. Processing delays are common during tax season, particularly when applications come from outside the United States. Inconsistent information across tax records, missing documentation, or date errors may also lead to application rejection.

    • Duplicate ITINs: Occur when applicants forget to report an existing number during renewal or submit under a slightly different name.

    • Expired ITINs: Lead to delayed refunds and loss of access to credits until the renewal is processed.

    • Application rejection: Results from incomplete Form W-7, missing attachments, or expired proof of foreign status.

    • Notices from the IRS: Often require applicants to resubmit documents or provide further clarification to demonstrate eligibility.

    Institutional guidance helps minimize these issues, yet applicants must remain proactive in maintaining accurate records and verifying all submissions. By working closely with academic institutions and responding promptly to IRS correspondence, scholars protect their immigration status and maintain eligibility for tax benefits. For official reference on institutional acceptance agent programs, applicants can consult IRS Publication 4520.

    Frequently Asked Questions (FAQ)

    What is an Individual Taxpayer Identification Number (ITIN)?

    The Internal Revenue Service issues an individual taxpayer identification number (ITIN) to individuals who cannot obtain a Social Security Number. Foreign scholars and professors use the ITIN to file a federal tax return and report taxable income such as stipends, grants, or consulting fees. It ensures compliance with federal tax laws and helps maintain accurate tax records when presenting financial information to the IRS during each filing season.

    How do I complete Form W-7 for my application?

    Form W-7 is the official application for an individual taxpayer identification number ITIN. Applicants must complete it accurately, selecting the correct reason for applying, and attach a federal tax return unless exempt. Supporting documentation must include original or certified copies of identity records. Each applicant should carefully prepare all tax records before submitting to ensure the IRS can verify eligibility and issue the ITIN without unnecessary delay.

    When should the ITIN renewal be submitted?

    ITIN renewal is required when the number has not been used on a federal tax return for three consecutive years. Renewals are typically submitted before the January filing deadline to avoid delays in tax return processing. Scholars and professors must complete Form W-7 again, include certified copies of identity documents, and attach current tax records. Submitting early ensures uninterrupted compliance and reduces processing issues during the busy tax season.

    What supporting documents are accepted as certified copies?

    The IRS requires original records or certified copies issued by the government agency that provided them. Acceptable items include passports, national identity cards, and civil birth certificates. Certified copies must show the same identifying information presented on Form W-7 to avoid rejection. Scholars should contact the issuing office before January deadlines to obtain proper documentation, ensuring that tax records remain accurate when submitted with their federal tax return.

    How should scholars maintain their tax records?

    Maintaining organized tax records is essential for compliance with federal tax laws. Scholars should keep copies of every federal tax return, correspondence from the IRS, and certified copies of submitted documents. Records should be stored securely and updated annually when new information becomes available. Detailed documentation helps resolve any IRS notes or requests quickly, ensuring future ITIN renewal or adjustments to an existing individual taxpayer identification number proceed without complications.

    Who should I contact for ITIN application questions?

    Applicants with questions should contact the IRS directly through its ITIN hotline or schedule an appointment at a Taxpayer Assistance Center. Certified Acceptance Agents can also guide applicants through Form W-7 completion and tax record submission. Contacting professionals ensures proper presentation of accredited copies and avoids errors during ITIN renewal or new applications. Seeking support early in January prevents delays during the peak federal tax return season.

    What happens if I fail to present updated information?

    Failure to present accurate documentation during filing or ITIN renewal may delay processing or result in rejection of the federal tax return. The IRS requires that Form W-7 and supporting certified copies match personal details such as name, date of birth, and foreign status. If inconsistencies are found, the IRS issues a note requesting clarification. Scholars who respond promptly with corrected tax records maintain compliance and avoid extended processing times.