IRS Form W-7 is just two pages long. Two pages, yet it trips up thousands of applicants every year — and a single mistake can delay your ITIN by months.
The W-7 is the only form that lets people without a Social Security Number get a U.S. tax identification number. If you need to file taxes with an ITIN, open a bank account, or qualify for certain financial products, this form is your starting point.
The problem isn’t the length. It’s the specifics: wrong date format, missing visa number, photocopies instead of originals, or checking the wrong reason box. The IRS rejects W-7 applications for these reasons constantly, and each rejection means starting over and waiting another 6–11 weeks.
This guide walks you through every field on Form W-7, explains which checkbox fits your situation, and shows you exactly what documents to include — so you get it right the first time.
Whether you’re applying for a new ITIN or renewing an expired one, this is the step-by-step breakdown you need.
What Is Form W-7?
Form W-7 is the official IRS application to request an Individual Taxpayer Identification Number (ITIN). It’s also used to renew an ITIN that has expired or been deactivated.
An ITIN is a nine-digit tax processing number issued by the IRS. It always starts with the number 9 and is formatted like a Social Security Number: 9XX-XX-XXXX. The IRS issues it solely for federal tax filing purposes — it is not an immigration document and doesn’t authorize you to work in the U.S.
Who needs to fill out Form W-7? You need it if you are:
- A nonresident alien who needs to file a U.S. tax return
- A U.S. resident alien filing a federal tax return but not eligible for a Social Security Number
- A dependent or spouse of a U.S. citizen or resident alien
- A foreign national student, professor, or researcher with U.S. tax obligations
- Anyone who previously had an ITIN that expired (ITINs not used on a federal return for three consecutive years are deactivated)
If you can get a Social Security Number, you should — ITINs are specifically for people who can’t. You cannot have both an SSN and an ITIN simultaneously.
Where to download it: Always download Form W-7 directly from IRS.gov. Search “Form W-7” on the IRS website. The current version is Form W-7 (Rev. 10-2019), though the IRS may release updated versions. Never use a form you downloaded from a third-party site — it may be outdated and your application will be rejected.
Before You Start: What You Need
Before you put pen to paper (or fill out the PDF), gather your documents. The IRS requires original documents or certified copies — not regular photocopies — to verify your identity and foreign status.
The Easiest Option: Your Passport
A passport is the only single document the IRS accepts on its own to prove both identity and foreign status. If you have a current, unexpired passport, that’s all you need for documentation purposes.
The IRS needs to see the photo page, the entry/exit stamps if applicable, and the visa page if you’re on a U.S. visa.
If You Don’t Have a Passport
You’ll need to submit two documents — one proving identity and one proving foreign status. The IRS accepts 13 types of documents total:
| Document | Proves Identity | Proves Foreign Status |
|---|---|---|
| Passport | Yes | Yes |
| National ID card | Yes | Yes |
| U.S. driver’s license | Yes | No |
| Civil birth certificate | Yes (for dependents under 18) | Yes |
| Foreign driver’s license | Yes | No |
| U.S. state ID card | Yes | No |
| Foreign voter’s registration card | Yes | Yes |
| U.S. military ID card | Yes | No |
| Foreign military ID card | Yes | Yes |
| U.S. visa | No | Yes |
| Visa issued by foreign country | No | Yes |
| USCIS photo ID | Yes | Yes |
| Medical records (dependents under 6 only) | Yes | No |
All documents must be current (not expired) and must be either originals or certified copies issued by the agency that issued the original. A notarized copy is not the same as a certified copy — the IRS will reject notarized copies.
Documents the IRS Will NOT Accept
- Photocopies you made yourself
- Notarized copies (unless issued by a CAA)
- Expired documents
- Documents without a photo (except for dependents under 14 or dependents under 18 if in military families)
- Unsigned identity documents
If you’re worried about mailing your original passport, consider submitting through a Certifying Acceptance Agent (CAA) — they can certify copies so you don’t have to send originals by mail.
Understanding the W-7 Checkboxes (Reason for Applying)
The first thing you fill in on Form W-7 is the reason you’re applying. There are eight checkboxes — labeled a through h — and you must check the one that matches your situation. Getting this wrong is one of the most common reasons for rejection.
Checkbox a — Nonresident Alien Required to Get ITIN to Claim Tax Treaty Benefit
Check this box if you’re a nonresident alien who doesn’t need to file a U.S. tax return but is claiming benefits under a tax treaty between the U.S. and your country. For example, certain foreign nationals receiving royalties or scholarship income that’s reduced by a treaty provision. You don’t attach a tax return in this case.
Checkbox b — Nonresident Alien Filing a U.S. Federal Tax Return
This is for nonresident aliens who have U.S.-source income and are required to file Form 1040-NR. You must attach your tax return to the W-7. This is one of the most common boxes checked by foreign nationals with U.S. investment income or business income.
Checkbox c — U.S. Resident Alien Filing a U.S. Federal Tax Return
Check this if you meet the Substantial Presence Test — meaning you’ve been physically present in the U.S. enough days to be considered a resident for tax purposes — but you’re not eligible for an SSN. You must attach a completed tax return.
Checkbox d — Dependent of a U.S. Citizen or Resident Alien
Use this for a child or other qualifying dependent of someone who is a U.S. citizen or green card holder. The dependent themselves may live inside or outside the U.S. — though since 2018, dependents living outside the U.S. can only get an ITIN in limited situations.
Checkbox e — Spouse of a U.S. Citizen or Resident Alien
Check this if you’re the foreign-born spouse of a U.S. citizen or resident alien and you’re filing jointly or claiming a spousal exemption on a return. You typically don’t need to file your own separate return to use this box.
Checkbox f — Nonresident Alien Student, Professor, or Researcher
For F-1, J-1, or other academic visa holders who need to file a U.S. tax return or claim an exception. You typically have a U.S. employer or receive a stipend that creates a U.S. tax filing obligation. In some cases you can apply without attaching a return if claiming an exception.
Checkbox g — Dependent or Spouse of a Nonresident Alien Visa Holder
This covers family members (spouse or dependents) of someone on a nonresident alien visa — for example, the spouse of an H-1B worker who is on an H-4 visa. If the H-4 visa holder is not themselves filing a tax return, they may use this box.
Checkbox h — Other
A catch-all box for situations not covered by a–g. You must specify the exception in the space provided. This is rare — most applicants fit into one of the above categories.
Decision Table: Which Box Is Mine?
| Your Situation | Check Box |
|---|---|
| Filing Form 1040-NR as a nonresident alien | b |
| Passed Substantial Presence Test, filing 1040 | c |
| Claiming tax treaty benefit only (no return) | a |
| Dependent child of U.S. citizen/resident | d |
| Foreign spouse of U.S. citizen/resident | e |
| F-1 or J-1 student with U.S. income | f |
| H-4 or F-2 visa holder (dependent of visa holder) | g |
If you’re unsure, consult a tax professional or a Certifying Acceptance Agent (CAA) before submitting — the IRS will not tell you which box to check.
How to Fill Out Form W-7: Field by Field
The W-7 is divided into sections. Here’s exactly what to write in each field, and the most common error people make in each one.
Line 1a — Name (Legal Name)
Enter your name exactly as it appears on your identification document. Last name first, then first name, then middle name.
If your passport shows “GARCIA RODRIGUEZ, CARLOS MIGUEL”, write: Last name: Garcia Rodriguez | First name: Carlos | Middle name: Miguel.
Common mistake: Putting first name first. The IRS processes names in last-name-first order. If your name on the form doesn’t match your passport, your application will be rejected.
Use only standard English characters. If your name has accents (ñ, é, ü), omit the accents — the IRS system doesn’t accept special characters.
Line 1b — Name at Birth (if different)
If your legal name is different from the name on your birth certificate (due to marriage, adoption, or legal name change), enter your birth name here. If your name hasn’t changed, leave this blank.
Common mistake: Filling this in unnecessarily. Only complete it if there’s an actual difference between your current legal name and your birth name.
Line 2 — U.S. Mailing Address
This is where the IRS will mail your ITIN assignment letter. Enter a complete U.S. mailing address: street number, apartment number if applicable, city, state, and ZIP code.
If you don’t have a U.S. address, leave this blank and complete Line 3 instead. Do not leave both blank.
Common mistake: Leaving out the apartment number, using a P.O. Box when the IRS requires a physical address for certain correspondence, or writing an incomplete ZIP code.
If you’re applying through a CAA or tax preparer, you can use their address with written permission.
Line 3 — Foreign Address
If you live outside the U.S., enter your complete foreign address here: street, city, province/region, postal code, and country. Include the country name even if it seems obvious.
If you have a U.S. address on Line 2, you do not need to complete Line 3.
Line 4 — Date of Birth
Format: MM/DD/YYYY. This is the American format, which differs from the European DD/MM/YYYY format.
If you were born on March 15, 1988, write: 03/15/1988.
Common mistake: Using the European format. This is one of the top reasons for W-7 rejection among applicants from Spain, Latin America, and Europe. Double-check this field before submitting.
Line 5 — Country of Birth
Write the full name of the country where you were born. Use the current country name — for example, if born in what was then the USSR, write the current country name (Ukraine, Russia, etc.).
Common mistake: Abbreviating the country name or using an outdated name.
Line 6a — Country of Citizenship
Write the country whose citizenship you hold. If you hold dual citizenship, list both countries. Spell out the full country name.
If you’re a naturalized citizen of multiple countries, list all of them — there’s space to add additional countries.
Line 6b — Foreign Tax Identification Number
This is your tax ID from your home country, if you have one. For example, for Spanish citizens this would be your NIE or NIF. For Mexican citizens, it’s the RFC.
If your country doesn’t issue tax ID numbers or you don’t have one, check the “Not applicable” box provided next to this line.
Common mistake: Leaving this completely blank without checking “Not applicable.” The IRS wants to know you didn’t forget the field — you need to indicate it’s not applicable if it doesn’t apply.
Line 6c — Type of U.S. Visa
If you’re in the U.S. on a visa, enter the visa type (F-1, H-1B, B-2, etc.) and the visa expiration date in MM/DD/YYYY format. Also enter the date you entered the U.S. (your entry date from your passport stamp or I-94 record).
If you don’t have a U.S. visa, leave this blank. If your visa has expired but you’re still legally present (for example, you’re in a period of authorized stay while changing status), enter the visa type and original expiration date, and note your current authorized stay status.
Common mistake: Leaving the expiration date blank when you have a visa, or confusing the visa expiration date with the I-94 admission expiration date. They’re different documents — your I-94 controls your authorized period of stay, not your visa stamp.
Line 6d — Identification Document Submitted
This is where you list the specific documents you’re submitting with your W-7. For each document, provide:
- Type of document (Passport, National ID card, etc.)
- Document number (passport number, ID card number)
- Expiration date
- Date of issue
- Country that issued it
If submitting a passport: enter your passport number, the issue date, and the expiration date as printed in your passport. Make sure all these details match exactly what’s in the document.
Common mistake: Writing the wrong document number, transposing digits in the passport number, or forgetting to include the country of issuance. Every detail in this field must match the submitted document exactly — the IRS verifies each one.
Line 6e — ITIN Previously Assigned
If you previously had an ITIN and you’re renewing it or need to replace it, enter your previously assigned ITIN here in the format 9XX-XX-XXXX.
If this is your first ITIN application, leave this blank. Do not write “N/A” — just leave it empty.
Common mistake: Forgetting to enter a previously assigned ITIN on a renewal application. This causes the IRS to process it as a new application instead of a renewal, which creates a paper trail problem.
Line 6f — Name of College or University
Complete this line only if you checked box f (student, professor, or researcher). Enter the full name of the U.S. academic institution. Also fill in the city and state.
If you’re not in an academic category, leave this blank.
Line 6g — Name of Employer
Complete this line only if you’re on a work-related visa (H-1B, L-1, O-1, etc.) and your employer is relevant to your ITIN reason. Enter your employer’s name and address, and specify your visa type.
This field also applies if you’re self-employed and need to document your work status in the U.S.
Signature and Date
You must sign the form in ink (if submitting a paper copy). The signature must be in the designated box on page 1 of the form, not elsewhere on the document.
Date format for the signature: MM/DD/YYYY.
If the applicant is a minor (under 18): A parent or legal guardian must sign on behalf of the child. Print the child’s name in the signature area and the parent/guardian signs below with their relationship noted (e.g., “Mother” or “Legal Guardian”).
If the applicant is mentally incapacitated: A legally designated representative may sign with documentation of their authority.
Common mistake: Forgetting to sign entirely. An unsigned W-7 will be rejected outright — the IRS won’t contact you to ask for a signature. It will simply return the application.
Acceptance Agent Block
If you’re submitting through a CAA, they complete this section. If you’re filing directly with the IRS, leave this blank.
Attaching Your Tax Return to Form W-7
In most cases, you must attach a completed federal tax return to your W-7. The ITIN application exists primarily to enable tax filing — so the IRS expects to see a return with your application.
When You Must Attach a Tax Return
Attach a tax return if you checked boxes b, c, or f (nonresident alien filing 1040-NR, resident alien filing 1040, or student/professor). The return should be fully completed but not signed — you’re submitting it as a pending return, since you can’t e-file without an ITIN yet.
Write “ITIN APPLICATION” clearly across the top of your tax return before attaching it. This signals to IRS processing staff that the return is part of a W-7 submission and shouldn’t be processed separately.
When You Do NOT Need to Attach a Tax Return
You don’t need to attach a return in these specific situations:
- Checkbox a: Claiming a tax treaty benefit (attach treaty documentation instead)
- Checkbox d or e: Dependent or spouse claiming an exception (attach required exception documents)
- Checkbox g: Dependent or spouse of a nonresident alien visa holder who is not filing a return
For these exceptions, the IRS has specific documentation requirements listed in the W-7 instructions. Review those carefully or consult a CAA.
E-Filing and ITINs
You cannot e-file a tax return while your ITIN application is pending. You must paper-file your return with the W-7 attached and wait for the ITIN to be issued. Once you have your ITIN, you can e-file future returns normally.
If your employer has already withheld taxes and you’re due a refund, the IRS will not process your refund until your ITIN is assigned — another reason to submit your W-7 accurately the first time.
How to Submit Form W-7
There are three ways to submit your completed W-7 and supporting documents:
Option 1: Mail to the IRS in Austin, TX
Send your W-7, original documents, and tax return (if required) to:
Internal Revenue Service
ITIN Operation
P.O. Box 149342
Austin, TX 78714-9342
Use a tracked mailing service (USPS certified mail, FedEx, UPS) so you have proof of delivery. The IRS mails back your original documents within 60 days.
Pros: Free, no appointment needed.
Cons: You must send your original passport and other documents by mail — risky if they’re lost in transit. Processing time is longest with this option.
Option 2: Through a Certifying Acceptance Agent (CAA)
A CAA is an individual or business authorized by the IRS to assist with ITIN applications. They can certify copies of your original documents, which means you don’t have to mail your passport to Austin.
CAAs charge a fee (typically $50–$300 depending on location and services). Find an IRS-authorized CAA at IRS.gov — search “Acceptance Agent Program.”
Pros: No need to mail originals, professional review of your application reduces errors, faster in practice.
Cons: Costs money.
If you want to get your ITIN fast, going through a CAA is the most reliable option — they catch errors before submission and their certifications are accepted by the IRS without additional verification.
Option 3: In Person at an IRS Taxpayer Assistance Center (TAC)
Some IRS Taxpayer Assistance Centers accept W-7 applications in person. You bring your original documents, they review and copy them, and you leave without having to mail anything.
Not all TACs process ITIN applications — check the IRS website to find one near you that does, and book an appointment in advance. TAC staff do not certify documents the same way CAAs do, but they can accept originals and return them to you on the spot.
Pros: No mailing, no waiting for documents to be returned, same-day confirmation that your documents are accepted.
Cons: Limited TAC locations, requires an appointment, not available everywhere.
Which Option Should You Choose?
| Your Situation | Best Option |
|---|---|
| You can’t afford to lose your passport | CAA or TAC |
| You want the lowest cost | Mail to IRS |
| You want the fastest processing | CAA |
| There’s a TAC near you | TAC (in person) |
| You’re outside the U.S. | Mail to IRS or CAA (some operate internationally) |
Common W-7 Mistakes That Cause Rejection
The IRS processes thousands of W-7 applications. Errors mean your application goes to the back of the line or gets returned entirely. Here are the mistakes that cause the most rejections:
1. Using an Outdated Form
The IRS periodically updates Form W-7. If you use an old version — even one that looks almost identical — your application will be rejected. Always download the form fresh from IRS.gov before applying.
2. Incorrect Date Format
Americans write dates as MM/DD/YYYY. Most of the world writes DD/MM/YYYY. This single formatting error causes a significant percentage of rejections from non-U.S. applicants. March 5, 1990 is 03/05/1990 — not 05/03/1990.
3. Incomplete Mailing Address
A missing apartment number, incorrect ZIP code, or absent state abbreviation will cause correspondence to bounce back. The IRS uses your mailing address to send your ITIN assignment letter — if it can’t reach you, your ITIN could sit in a pile waiting for you to contact them.
4. Wrong or Missing Visa Information
If you’re in the U.S. on a visa, Line 6c must be complete — visa type, expiration date, and U.S. entry date. Leaving any of these blank will trigger a rejection or a request for more information, adding weeks to your processing time.
5. Sending Photocopies Instead of Certified Originals
Regular photocopies are not accepted. You must send original documents or copies certified by the issuing agency. A photocopy you made at home — even if it’s clear and complete — will result in automatic rejection.
6. Forgetting to Attach the Tax Return
If your situation requires a tax return (checkboxes b, c, or f), and you don’t include it, the IRS will return your entire application. This is one of the top reasons for rejection. Make sure the return has “ITIN APPLICATION” written across the top.
7. Not Signing the Form
An unsigned W-7 is invalid. The IRS will not process it or contact you to request a signature — they’ll simply return it. Sign in ink in the designated box on page 1.
8. Name Mismatch
The name on your W-7 must match exactly the name on the identification documents you’re submitting. If your passport says “MARIA ELENA DOMINGUEZ” and you write “Maria Dominguez” on the form, the IRS will flag it. Use your full legal name, spelled exactly as it appears in your identification document.
9. Checking the Wrong Reason Box
The IRS will not correct your checkbox selection for you. If you check the wrong box, you’ll either receive an incorrect ITIN assignment or a rejection asking you to refile. Review the checkbox section of this guide carefully before submitting.
10. Sending Documents Without Return Address
If you mail your W-7 and original documents, include a self-addressed, stamped envelope if you want your documents returned quickly. The IRS will mail them back, but this helps ensure they’re returned to the right place.
How Long Does It Take After Submitting W-7?
Once the IRS receives your W-7 application, processing typically takes 6 to 11 weeks during normal periods. During peak tax season (January through April), it can take toward the longer end of that range.
The clock starts when the IRS physically receives your documents — not when you mail them. Allow 1–2 weeks for mail delivery if sending to Austin.
How to Check Your Application Status
The IRS does not offer an online status tracker for ITIN applications. To check your status, call:
IRS ITIN Line: 1-800-829-1040
Hours: Monday–Friday, 7:00 a.m. to 7:00 p.m. local time
Have your name, date of birth, and the date you submitted your application ready. Be prepared for long hold times during peak season.
You can also check status through the IRS Spanish-language line: 1-800-829-1040 (select the Spanish option).
What You’ll Receive
Once your ITIN is assigned, the IRS mails you a CP565 notice — a letter confirming your ITIN number. This letter is your official documentation. Keep it in a safe place. The IRS does not issue ITIN cards — the CP565 letter is the only document you receive.
Your original documents are returned separately, usually within 60 days of receiving your application.
W-7 for Dependents: Special Instructions
If you’re applying for an ITIN for a child or other dependent, there are additional requirements and restrictions to be aware of.
Who Can Apply for a Dependent’s ITIN
A parent or legal guardian can apply for an ITIN number on behalf of a minor child. The W-7 is completed with the child’s information, but a parent or guardian signs the form on the child’s behalf.
Documents Needed for a Dependent
For a dependent child, you typically need:
- The child’s passport (if available — this alone suffices)
- Or: birth certificate + one other document showing foreign status
- For children under 6: school records or medical records may substitute for one document
- If the child was born in the U.S.: a U.S. birth certificate is required
Dependents Living Outside the U.S. — Major Restriction Since 2018
The Tax Cuts and Jobs Act of 2017 significantly changed ITIN eligibility for dependents living outside the U.S. As of 2018, dependents who live outside the United States can only receive an ITIN if they are from Canada or Mexico, or if they qualify for one of a small number of specific exceptions.
If your dependent lives in Spain, Latin America (outside Mexico), or anywhere else outside North America, check with a tax professional or CAA before applying — your dependent may no longer qualify for an ITIN under current rules.
Dependents living inside the U.S. are not subject to this restriction.
Form W-7 vs Form SS-5: What’s the Difference?
Some applicants aren’t sure whether they should file Form W-7 or Form SS-5. Here’s the short answer:
| Form W-7 (ITIN) | Form SS-5 (SSN) | |
|---|---|---|
| Issued by | IRS | Social Security Administration |
| For | People not eligible for an SSN | People eligible for an SSN |
| Eligibility | Foreign nationals, nonresident aliens, certain dependents | U.S. citizens, permanent residents, authorized workers |
| Used for | Federal tax filing only | Work authorization, taxes, Social Security benefits |
| Can coexist? | No — once you get an SSN, your ITIN is deactivated | No — you can’t have both |
If you’re eligible for an SSN, always apply for that first. ITINs do not grant work authorization, cannot be used for Social Security benefits, and are not accepted as identification by most government agencies outside the IRS.
W-7 FAQ
Can I fill out Form W-7 in Spanish?
No. Form W-7 must be completed in English. The IRS does provide Spanish-language instructions (Instrucciones para el Formulario W-7(SP)), which you can use as a reference — but the form itself must be filled out in English.
How much does it cost to submit Form W-7?
Filing directly with the IRS — by mail or at a TAC — is completely free. If you use a Certifying Acceptance Agent (CAA), they charge their own fee, typically $50–$300. Some nonprofit organizations offer free ITIN assistance — search for IRS VITA (Volunteer Income Tax Assistance) sites in your area.
Can I file Form W-7 online?
No. As of 2026, there is no option to submit Form W-7 online. The IRS does not accept digital or electronic submissions for ITIN applications. You must submit a paper form by mail, through a CAA, or in person at a TAC.
What happens if I make a mistake on my W-7?
The IRS will mail you a letter (typically a CP567 or similar notice) explaining what went wrong and asking you to refile or provide the missing information. This resets your processing timeline. To avoid this, review every field carefully before submitting, or use a CAA to verify your application before it goes in.
Does an ITIN expire?
ITINs themselves don’t have a set expiration date — but they are deactivated if not used on a federal tax return for three consecutive years. Additionally, ITINs issued before 2013 in certain number ranges are being phased out and must be renewed even if you’ve been filing consistently. Check IRS.gov for the current list of ITIN ranges requiring renewal.
Can I use an ITIN to open a bank account or get a credit card?
Many banks and credit unions accept ITINs for account opening. Several credit cards also accept ITIN as an alternative to SSN. See our guide on credit cards that accept ITIN for the best current options.
How do I know if my ITIN has been deactivated?
You can call the IRS at 1-800-829-1040 to ask about the status of your ITIN. Alternatively, if you try to file a return with a deactivated ITIN, the IRS will reject the return and notify you. If deactivated, you’ll need to submit a new W-7 with “Renewal” checked.
Bottom Line
Form W-7 is a short document with precise requirements. The difference between approval and rejection almost always comes down to details: the right date format, the right checkbox, the right documents.
Here’s a quick checklist before you submit:
- Downloaded the latest version of W-7 from IRS.gov
- Checked the correct reason box (a through h)
- Entered date of birth in MM/DD/YYYY format
- Name on form matches name on ID documents exactly
- Visa type and expiration date completed (if applicable)
- Document number, issue date, and expiration date filled in for submitted documents
- Tax return attached if required (with “ITIN APPLICATION” written on top)
- Original documents or certified copies included (not photocopies)
- Form signed and dated
- Mailing address complete with ZIP code
If you want professional help, a Certifying Acceptance Agent can review your application before it goes to the IRS — reducing the risk of rejection significantly.
Once you have your ITIN, the financial doors start opening. You can file taxes, open bank accounts, build credit, and qualify for financial products. Check our guide on how to get your ITIN fast if you’re working against a tax deadline.