What is an ITIN? Complete Guide 2025
What is an ITIN? Complete Guide 2025
An Individual Taxpayer Identification Number (ITIN) is a nine-digit tax processing number issued by the Internal Revenue Service for individuals who need to file U.S. taxes but cannot get a Social Security Number. The IRS assigns ITINs to help people comply with federal tax laws regardless of their immigration status or eligibility for an SSN.
Quick Facts
| Category | Details |
|---|---|
| Format | 9 digits (9XX-XX-XXXX) starting with the number 9 |
| Issuing Authority | Internal Revenue Service (IRS) |
| Primary Purpose | Federal tax filing and reporting |
| Validity Period | Expires after 3 consecutive years of non-use |
| Application Form | Form W-7 |
| Processing Time | 7-11 weeks (longer during peak season) |
| Work Authorization | No - does not permit legal employment |
What is an ITIN?
Definition and Purpose
The ITIN serves as a federal tax identification number for people who must report income to the U.S. government. The IRS created this system in 1996 to help foreign nationals and others meet their tax obligations when they cannot obtain a Social Security Number.
All ITINs begin with the digit 9, and the fourth and fifth digits range from 50-65, 70-88, 90-92, or 94-99. This formatting helps distinguish ITINs from Social Security Numbers during tax processing.
According to the IRS official documentation, ITINs are issued "regardless of immigration status."
Research from the American Immigration Council shows that in 2022, approximately 3.8 million tax returns included an ITIN, contributing $6.5 billion in Social Security and Medicare taxes.
What ITINs Are Used For
People use ITINs to report various types of income, including wages, investment income, prizes, and scholarship payments. The number allows individuals to claim certain tax benefits and refunds they may qualify for under U.S. law.
Business owners often need ITINs to establish their tax identity in the United States. People starting companies can use an ITIN to open business bank accounts and set up payment processing accounts like PayPal or Stripe.
Spouses and dependents listed on tax returns frequently need ITINs even if they don't work themselves. Listing a spouse or dependent with an ITIN can reduce the tax burden for the primary filer.
What ITINs Are NOT
An ITIN serves only federal tax purposes and does not grant any immigration benefits or legal status. Having an ITIN does not make someone a legal resident or citizen of the United States.
An ITIN does not authorize anyone to work legally in the United States under any circumstances. Employers cannot use an ITIN in place of a Social Security Number for employment verification purposes.
ITIN holders cannot claim all the same tax credits available to Social Security Number holders. For example, people with ITINs cannot claim the Earned Income Tax Credit regardless of their income level.
Who Needs an Individual Taxpayer Identification Number?
Foreign Nationals Working in the U.S.
Foreign nationals who earn income in the United States but cannot get an SSN represent the largest group of ITIN applicants. Students, professors, and researchers on F, J, M, or Q visas often need ITINs to report scholarship income or teaching stipends.
According to Study in the States, these visa holders must report certain types of income. Freelancers and independent contractors working for U.S. companies from abroad also need ITINs to report their earnings.
Spouses and Dependents
Spouses of U.S. citizens or lawful residents often need ITINs to be listed on tax returns. Filing jointly can provide better tax rates and higher standard deductions compared to filing separately.
Dependents who cannot get Social Security Numbers also require ITINs to be claimed on tax returns. The ITIN fills this requirement for children or other dependents who are not eligible for SSNs.
Investors and Real Estate Owners
Foreign investors who earn income from U.S. investments need ITINs to report this income properly. Rental income from U.S. real estate properties creates tax obligations even for non-residents.
Partnership members who invest in U.S. businesses but live abroad also need ITINs for tax purposes. Real estate transactions can trigger FIRPTA withholding, which requires sellers to have taxpayer identification numbers.
ITIN Eligibility Requirements
Basic Qualification Criteria
Anyone who needs to file a U.S. tax return but cannot obtain a Social Security Number qualifies for an ITIN. The IRS does not require applicants to have legal immigration status or work authorization.
Applicants must have a legitimate federal tax purpose for requesting an ITIN from the IRS. The IRS requires proof of this tax purpose, usually in the form of a completed tax return submitted with the application.
Foreign status must be proven through original documents or certified copies from the issuing agency. Notarized copies do not meet IRS requirements for ITIN applications.
Eligibility Decision Tool
START: Do you need to file a U.S. tax return OR have another federal tax purpose?
│
├─ NO → You do not need an ITIN at this time
│
└─ YES → Can you obtain a Social Security Number?
│
├─ YES → Apply for SSN instead of ITIN
│
└─ NO → You qualify for an ITIN
│
└─ Do you have one of these?
- Valid federal tax return
- Exception documentation
- Proof of third-party withholding
- Dependent of a U.S. tax filer
- Tax treaty claim
│
├─ YES → Proceed with Form W-7 application
│
└─ NO → Wait until you have the required documentation
ITIN vs SSN: Understanding the Differences
Comparison Table
| Feature | ITIN | SSN |
|---|---|---|
| Primary Purpose | Federal tax filing only | Multiple purposes, including employment, benefits, and credit |
| Work Authorization | No | Yes (with proper status) |
| Format | 9XX-XX-XXXX (starts with 9) | XXX-XX-XXXX (does not start with 9) |
| Issuing Agency | Internal Revenue Service | Social Security Administration |
| Eligibility | Non-SSN eligible individuals for tax purposes | U.S. citizens and authorized workers |
| Expiration | After 3 years of non-use | Never expires |
| Social Security Benefits | No eligibility | Eligible based on work credits |
| Earned Income Tax Credit | Not eligible | Eligible if requirements met |
Key Differences
The most important difference between an ITIN and an SSN lies in work authorization. Social Security Numbers prove that holders can legally work in the United States, while ITINs carry no such authorization.
Social Security Numbers never expire and stay with individuals for their entire lives. ITINs expire after three consecutive years without use on a federal tax return.
SSN holders can eventually qualify for Social Security retirement and disability benefits based on work credits. ITIN holders pay into Social Security and Medicare through withholding, but cannot claim these benefits unless they later obtain an SSN.
When to Apply for an ITIN
Best Timing for Applications
The ideal time to submit an ITIN application falls between June and December each year. Processing times average around 7 weeks when applications arrive during non-peak periods.
Avoid applying during peak tax season from January through April if possible. Applications submitted during peak season can take 9-11 weeks or longer to process completely.
Submit your application at least 11 weeks before you need to file a tax return. Missing tax filing deadlines because of ITIN delays can result in penalties and interest charges.
Extension Options if ITIN is Pending
The IRS allows taxpayers to request automatic six-month filing extensions while waiting for ITIN processing. File Form 4868 by the regular tax deadline and write "ITIN TO BE REQUESTED" where the SSN or ITIN would normally appear.
Extensions only delay filing, not payment of any taxes you owe. Calculate your estimated tax liability and pay it by the original deadline to avoid interest charges.
How to Apply for an ITIN: Step-by-Step
Step 1: Gather Required Documentation
Start by collecting all documents needed to prove your identity and foreign status. Your passport serves as the best single document because it verifies both requirements at once.
Make copies of your documents for your records before submitting originals to the IRS. The IRS requires original documents or certified copies from the issuing agency for ITIN applications.
Step 2: Complete Form W-7
Download Form W-7 from the IRS website or request a paper copy by phone. Fill out every section completely and accurately to avoid rejection.
Check the appropriate box for your reason for applying for an ITIN. If renewing an expired ITIN, mark the renewal box at the top of Form W-7.
For detailed guidance, visit our documents you need page, which outlines all required paperwork.
Step 3: Prepare Your Tax Return
Complete your federal tax return (Form 1040 or 1040-NR) before submitting your ITIN application. Leave the Social Security Number field blank on the return; the IRS will fill in your ITIN once processed.
Attach all necessary schedules, forms, and documentation to support the income and deductions on your return. The IRS processes your tax return and ITIN application together.
Step 4: Choose Your Submission Method
Mail your application to the IRS address listed in the Form W-7 instructions. Include Form W-7, your tax return (if applicable), and original documents or certified copies.
Apply in person at an IRS Taxpayer Assistance Center if one is located near you. Call 844-545-5640 to schedule an appointment at a TAC.
Work with a Certifying Acceptance Agent (CAA) to avoid mailing your original documents to the IRS. CAAs are authorized by the IRS to verify documents and submit certified copies.
Next Step: Easy Tax Store serves as an IRS-certified CAA and can help process your ITIN application while protecting your original documents.
Step 5: Track Your Application Status
Allow 7 weeks for processing if you submit during non-peak season. Applications received between January 15 and April 30 may take 9-11 weeks.
Call the IRS at 800-829-1040 if you haven't received a response after the expected processing time. Once approved, you'll receive a CP 565 notice showing your assigned ITIN.
Check our ITIN FAQ page for answers to common questions about the application process.
Required Documents for ITIN Application
Primary Identity Documents
A valid passport serves as the strongest single document for ITIN applications. Passports verify both identity and foreign status simultaneously without requiring any additional paperwork.
Your passport must be valid and not expired when you submit your ITIN application. For dependents from countries other than Canada and Mexico, passports must show a U.S. entry date stamp.
If you cannot provide a passport, you must submit multiple documents from the IRS-approved list. The IRS requires at least one document to prove identity and another to prove foreign status.
Document Certification
Only original documents or certified copies from the issuing agency meet IRS requirements for ITIN applications. Notarized copies are never acceptable as supporting documentation.
Certifying Acceptance Agents provide valuable service by verifying documents without requiring you to mail originals. After verification, they submit certified copies to the IRS while returning your originals immediately.
Processing Times and What Affects Speed
Standard Processing Timeframes
Normal processing for ITIN applications takes about 7 weeks from the date the IRS receives your complete application. Peak season applications submitted between January 15 and April 30 typically require 9-11 weeks for processing.
International applications mailed from overseas generally take longer because of international mail delivery times. Renewal applications are usually processed on the same timeline as new applications.
Factors That Speed Up Processing
Submitting complete and accurate applications helps the IRS process ITINs more quickly. Applying during non-peak season from June through December results in faster processing times.
Using a Certifying Acceptance Agent can expedite the document verification portion of your application. Providing clear and legible photocopies of all documents submitted helps IRS processors work efficiently.
Common Reasons for Delays
Missing or incomplete documentation represents the most common reason for ITIN application delays. Errors or inconsistencies on Form W-7 can cause the IRS to request clarification.
Expired identification documents will result in rejection of your ITIN application. Submitting notarized copies instead of certified copies causes applications to be returned unprocessed.
ITIN Renewal and Maintenance
Understanding ITIN Expiration
ITINs that go unused on federal tax returns for three consecutive years automatically expire. The expiration occurs on December 31 of the third year without use.
The IRS also expires older ITINs on a rolling basis based on the middle digits. For 2025, ITINs with middle digits 88 that were issued before 2013 will expire at the end of the year.
Filing a tax return with an expired ITIN results in delayed processing and potential loss of refunds. The IRS will hold your return until you renew the ITIN.
How to Renew an Expired ITIN
Use the same Form W-7 for renewing an ITIN as you would for applying for a new one. Mark the "Renew an existing ITIN" box in the application type section at the top.
Submit your renewal application with your current year's tax return unless you qualify for an exception. Family members can all renew their ITINs together by attaching separate W-7 forms to one tax return.
Keeping Your ITIN Active
Use your ITIN on at least one federal tax return every three years to keep it active. Filing a tax return resets the three-year expiration clock.
Mark your calendar with your ITIN's potential expiration date based on your last use. Keep copies of all tax returns that include your ITIN for your personal records.
Common Mistakes to Avoid
Waiting Until the Last Minute to Apply - Don't wait until tax season to apply for or renew your ITIN. Processing takes 7-11 weeks, which could push you past filing deadlines.
Submitting Notarized Instead of Certified Copies - Notarized copies are never acceptable for ITIN applications. Only original documents or certified copies from the issuing agency meet IRS requirements.
Using Old or Expired Identification Documents - Check expiration dates on all identity documents before submitting your application. Expired documents will cause immediate rejection.
Leaving Fields Blank on Form W-7 - Every field on Form W-7 must be completed unless specifically marked as optional. Blank spaces signal an incomplete application to IRS processors.
Applying for ITIN When You Qualify for SSN - Never apply for an ITIN if you are eligible to obtain a Social Security Number. The SSN provides more benefits and broader utility.
Not Making Copies Before Mailing Originals - Always photocopy or scan all documents before mailing them to the IRS. Lost applications do happen.
Frequently Asked Questions
What ITIN numbers need to be renewed in 2025?
ITINs with middle digits 88 that were issued before 2013 will expire at the end of 2025. These numbers follow the pattern 9XX-88-XXXX and must be renewed before filing 2026 tax returns. Additionally, any ITIN not used on a federal tax return for three consecutive years expires automatically.
What is the purpose of an ITIN?
The ITIN allows individuals who cannot get Social Security Numbers to comply with U.S. federal tax laws. It serves as a tax processing number for filing returns, reporting income, and claiming certain tax benefits.
How long does it take to get an ITIN number in 2025?
Standard processing time is 7 weeks during non-peak season (June through December). Applications submitted during peak tax season (January 15 through April 30) take 9-11 weeks. International applications may require additional time.
Is ITIN number the same as SSN?
No, ITINs and Social Security Numbers are completely different. ITINs are for federal tax filing only and do not authorize work. Social Security Numbers allow employment, qualify holders for benefits, and serve multiple identification purposes.
Why would an immigrant get an ITIN?
Immigrants who earn income in the United States must report it to the IRS even without work authorization. An ITIN allows them to file tax returns, potentially receive refunds, and comply with federal law.
Can I work legally with an ITIN?
No, an ITIN does not provide work authorization under any circumstances. It serves only for tax reporting purposes. Employers cannot accept ITINs in place of Social Security Numbers.
Can I open a bank account with an ITIN?
Many U.S. banks accept ITINs for opening personal and business bank accounts. While policies vary by institution, most major banks recognize ITINs as valid taxpayer identification.
What is going to happen to the IRS in 2025?
The IRS continues normal operations in 2025 with ongoing efforts to improve taxpayer service and processing efficiency. ITIN services remain available through standard application channels, including mail, Taxpayer Assistance Centers, and Certifying Acceptance Agents.
How long is an ITIN valid for?
An ITIN remains valid as long as it is used on a federal tax return at least once every three years. After three consecutive years without use, the ITIN expires on December 31.
Can I have both ITIN and SSN?
You cannot have both numbers active at the same time. Once you become eligible for a Social Security Number, you must obtain one and notify the IRS. The IRS will void your ITIN automatically.
Do you get a social security card with an ITIN?
No, ITIN holders do not receive Social Security cards. The IRS sends a CP 565 notice letter showing your assigned ITIN instead.
Can I get a tax refund with ITIN?
Yes, ITIN holders can receive tax refunds just like Social Security Number holders. If you had taxes withheld and your actual liability is lower, you can claim a refund.
Need Help?
Applying for an ITIN doesn't have to be complicated. At Easy Tax Store, we serve as an IRS-certified Certifying Acceptance Agent with years of experience helping people get their ITINs.
Our CAA certification means we can verify your documents and submit certified copies to the IRS. You keep your original passport and other important documents instead of mailing them.
Contact us today to learn how we can help with your ITIN application or renewal.
Conclusion
- ITINs serve only federal tax purposes and do not authorize work or provide immigration benefits
- Applications take 7-11 weeks to process, depending on timing and submission method
- ITINs expire after three years of non-use or based onthe middle digit expiration schedules
- Proper documentation is required, including original documents or certified copies
- Certifying Acceptance Agents can help protect your original documents during applicatio processn
- Renewal uses the same process as initial applications with Form W-7
- Planning and applying during the non-peak season leads to faster processing
Don't let ITIN confusion keep you from meeting your tax obligations. Take action now to get the taxpayer identification you need.