ITIN Application: How to Apply With Form W-7
An ITIN is not a general ID for every foreign founder. It is an IRS taxpayer identification number for a person who has a federal tax purpose and is not eligible for a Social Security Number. A complete application normally combines Form W-7, a federal income-tax return unless an exception applies, and acceptable identity/foreign-status documents.
How do you apply for an ITIN?
Complete IRS Form W-7, attach the required federal income-tax return unless you qualify for an IRS exception, and provide acceptable documents proving identity and foreign status. You can submit the package by mail or use an eligible in-person route such as a designated IRS Taxpayer Assistance Center, a qualifying VITA site with ITIN services, or an IRS-authorized Acceptance Agent/Certifying Acceptance Agent.
What Is an ITIN?
An Individual Taxpayer Identification Number (ITIN) is a nine-digit taxpayer identification number issued by the IRS to individuals who need a U.S. taxpayer identification number for federal tax purposes but are not eligible for a Social Security Number. ITINs are formatted like an SSN and begin with the number 9.
An ITIN is for federal tax administration. It does not authorize employment in the United States, change immigration status, or create eligibility for Social Security benefits.
If you are eligible for an SSN, Form W-7 is generally not the correct path. The ITIN program is for people who need a taxpayer ID for federal tax purposes but cannot obtain an SSN.
Who Actually Needs an ITIN?
The correct test has two parts: (1) you have a federal tax purpose that requires a taxpayer identification number, and (2) you are not eligible for an SSN. Current Form W-7 categories include nonresident aliens claiming treaty benefits, nonresident aliens filing U.S. federal returns, certain resident aliens filing U.S. returns, and qualifying spouses/dependents, among other specified situations.
Potential ITIN path
- You cannot obtain an SSN.
- You must file a federal tax return requiring a taxpayer ID.
- You qualify for a documented Form W-7 exception.
- You are an eligible spouse/dependent with an allowable tax benefit or other qualifying federal tax purpose.
ITIN not established by this alone
- Forming a U.S. LLC.
- Wanting a business bank account.
- Applying for the LLC's EIN through an eligible non-online route.
- Wanting a U.S. tax ID “just in case.”
For the business-vs-person distinction, see ITIN vs EIN.
ITIN Eligibility & Submission Path Navigator
The old tool's purpose was useful, but it made some situations sound more certain than the IRS rules support. This revision separates ITIN eligibility from submission preference.
This tool does not determine immigration status, tax residency, SSN eligibility, treaty entitlement, dependent eligibility or whether a specific W-7 exception applies. Confirm those items in current IRS instructions or with a qualified tax professional.
How to Apply for an ITIN: 6-Step Process
Confirm you need an ITIN
Verify that you have a federal tax purpose requiring a taxpayer identification number and that you are not eligible for an SSN.
Complete Form W-7
Select the correct reason for applying and complete the fields that apply to your circumstances. Each family member applying needs a separate Form W-7.
Prepare the federal tax return—or document an exception
Most first-time applications include Form 1040 or Form 1040-NR. If an IRS exception applies, provide the exception documentation required by the current W-7 instructions instead.
Gather acceptable supporting documents
Provide original documents or issuing-agency-certified copies proving identity and foreign status. Dependent applicants may also need U.S. residency evidence.
Choose the correct submission route
Mail the package or use a designated TAC, eligible VITA ITIN site, CAA or AA depending on document-authentication needs, location and cost.
Watch for the IRS notice
The IRS says to allow about 7 weeks for status, or 9–11 weeks during January 15–April 30 or when applying from overseas. Follow up if the notice does not arrive within that period.
Form W-7: What the Application Package Needs
Form W-7
Choose the correct reason for submitting the form and complete the identity, birth, citizenship, foreign-tax-ID and visa information that applies. Renewal applications use the same form with renewal-specific instructions.
Tax return or exception
A U.S. federal income-tax return is generally included with a first-time W-7. The IRS recognizes specific exceptions; use the exact exception requirements rather than assuming any treaty or investment situation automatically qualifies.
ITIN Supporting Documents
The IRS currently lists 13 acceptable supporting-document types. Documents must satisfy the current identity, foreign-status and, where applicable, dependent-residency rules. The IRS accepts originals or copies certified by the issuing agency.
| Document | Identity | Foreign status | Important limitation |
|---|---|---|---|
| Passport | Yes | Yes | Generally the only stand-alone document; dependent/date-of-entry rules can require additional evidence |
| National ID card | Yes | Yes | Must satisfy current IRS content/current-document requirements |
| Foreign driver's license | Yes | Yes | Usually combined with another acceptable document |
| U.S. driver's license / state ID | Yes | No | Does not by itself establish foreign status |
| Birth certificate | Yes | Yes | Special importance/requirements can apply for dependents |
| Visa | Yes | Yes | Must be current under W-7 documentation rules |
| Medical / school records | Limited dependent use | Limited | Age and authentication restrictions apply |
Do not assume a CAA can authenticate every dependent document. CAAs can authenticate most documents for primary/secondary applicants, but for dependents they generally authenticate only passports and birth certificates; foreign military ID and certain dependent records must be handled under the IRS's special rules.
How to Submit an ITIN Application
IRS Taxpayer Assistance Center
Use a designated TAC with ITIN services. Appointments are required. These centers can authenticate most supporting documents and return authenticated documents at the appointment; school and medical records for dependents are exceptions.
VITA Site With ITIN Services
Some VITA sites have CAAs and can provide ITIN services. Availability is limited and normal VITA eligibility rules may affect free tax-return preparation.
CAA or Acceptance Agent
A CAA can authenticate most permitted documents; an ordinary Acceptance Agent helps complete/review W-7 but does not authenticate documents and sends originals or issuing-agency-certified copies to the IRS.
No single route is always “best.” A CAA can be particularly useful when you are abroad or want to avoid mailing an original passport, but a designated TAC or qualifying VITA ITIN site can provide free alternatives when accessible.
Current ITIN Mailing Addresses
| Delivery method | Current IRS destination |
|---|---|
| U.S. Postal Service | Internal Revenue Service · Austin Service Center · ITIN Operation · P.O. Box 149342 · Austin, TX 78714-9342 |
| Private delivery service | Internal Revenue Service · ITIN Operation · Mail Stop 6090-AUSC · 3651 S. Interregional, Highway 35 · Austin, TX 78741-0000 |
Always re-check the current IRS W-7 instructions immediately before mailing because addresses and procedures can change.
ITIN Processing Time and What Happens Next
The IRS currently says to allow 7 weeks for notification of ITIN application status. It can take 9–11 weeks if you submit during peak tax time, January 15 through April 30, or apply from overseas.
| IRS notice | Meaning | What to do |
|---|---|---|
| CP565 | IRS assigned the ITIN | Keep the notice with your tax records |
| CP566 | IRS needs more information | Respond with the requested information/documents by the stated deadline |
| CP567 | Application was rejected | Review the reason and resubmit correctly if you remain eligible |
If you mailed supporting documents, the IRS says it will return them to the mailing address on Line 2 of Form W-7 within 60 days. Contact the IRS if the documents have not returned by then.
ITIN Expiration and Renewal
An ITIN expires if it is not used on a U.S. federal tax return for three consecutive tax years. It expires on December 31 after the third consecutive year of non-use.
You generally renew an expired ITIN when it will be included on a federal tax return. If an expired ITIN is only being used on information returns reporting payments, such as certain Forms 1099, the IRS says renewal is not required solely for that use.
Do not renew an ITIN if you obtained an SSN. Follow IRS instructions for notifying the agency and use the SSN going forward.
ITIN vs EIN for LLC Owners
An ITIN identifies you as an individual taxpayer; an EIN identifies the business or entity. You do not need an ITIN merely to form a U.S. LLC. And current Form SS-4 instructions permit a foreign responsible party who has no SSN/ITIN and is ineligible for either to enter “foreign” or “N/A” on Line 7b when applying through the applicable EIN route.
That does not make the online EIN tool available without a taxpayer ID; the online route has separate eligibility requirements. See Apply for an EIN Without an SSN.
Identity-Document Safety
Never enter your passport number, SSN, ITIN, visa number or other sensitive taxpayer information into Enjoys-life's educational tools. Use official IRS systems, a designated IRS/VITA location, or a professional/agent you independently verify and intend to use.
Still Need to Form the LLC?
Northwest Registered Agent
An ITIN application is a personal federal tax-ID process; it does not form an LLC. If you have not formed the underlying LLC yet, Northwest is one paid formation-assistance option. After formation, handle the entity's EIN and any personal ITIN need under the applicable IRS rules.
See Northwest's current offer →Affiliate disclosure: Enjoys-life may earn a commission if you use this link. Northwest is optional; the IRS itself does not charge to issue an ITIN.
Common ITIN Application Mistakes
- Applying even though you are SSN-eligible. Confirm SSN eligibility first.
- Applying only because you own an LLC. LLC ownership alone does not create ITIN eligibility.
- Omitting the federal return without a valid exception. Most first-time W-7 applications require a return.
- Using an unsupported exception. Match the exact W-7 exception and evidence requirements.
- Sending ordinary photocopies. The IRS generally requires originals or issuing-agency-certified copies unless an authorized authentication route applies.
- Assuming a passport always resolves every dependent case. Date-of-entry/residency and dependent rules can require more.
- Confusing an AA with a CAA. Only a Certifying Acceptance Agent can authenticate most qualifying documents.
- Using old mailing addresses. Check current IRS instructions before mailing.
- Paying a provider because you think the IRS charges for the ITIN. The IRS issuance itself is free; third-party help can have separate fees.
Primary IRS Sources
This guide is maintained as an educational ITIN application resource. W-7 eligibility, supporting-document rules, return/exception requirements, submission methods, mailing addresses, processing times, notices and renewal rules were checked against current IRS materials. International tax and dependent eligibility can be fact-specific, so complex applications should be reviewed with a qualified tax professional or IRS-authorized agent.