Complete step-by-step guide for non-US residents to obtain an Individual Taxpayer Identification Number (ITIN) for LLC tax filing, banking, and compliance.
What is an ITIN and Why Do Non-Residents Need One?
An Individual Taxpayer Identification Number (ITIN) is a nine-digit tax processing number issued by the IRS to individuals who are required to file US tax returns but do not qualify for a Social Security Number (SSN). For non-resident LLC owners, an ITIN is essential for:
- Filing US federal tax returns (Form 1040-NR)
- Reporting LLC income on Schedule K-1 for multi-member LLCs
- Claiming tax treaty benefits
- Opening certain US bank accounts that require a US tax ID
- Completing Form W-8BEN for withholding tax purposes
ITIN vs EIN: Do Not Confuse These
An EIN is for your LLC (business entity). An ITIN is for you personally. You need both: the EIN to operate the LLC, and the ITIN to file your personal tax return reporting the LLC's income.
Who Qualifies for an ITIN?
The IRS issues ITINs to non-resident aliens who:
- Have a US tax filing obligation (e.g., LLC income, rental income, royalties)
- Are dependents or spouses of a US citizen or resident alien
- Are non-resident aliens claiming tax treaty benefits
- Need an ITIN for third-party reporting (1099 forms)
You do not qualify if you are eligible for an SSN. If you later obtain an SSN, your ITIN expires and must be replaced.
ITIN Application Methods Compared
| Method | Processing Time | Document Risk | Cost | Best For |
|---|---|---|---|---|
| Direct IRS mail | 7-11 weeks | High (mail original passport) | Free | Those with duplicate IDs |
| IRS Taxpayer Assistance Center (TAC) | 7-11 weeks | None (in-person verification) | Free | Those visiting the US |
| Certified Acceptance Agent (CAA) | 7-11 weeks | None (agent verifies) | $100–$500 | Non-residents abroad |
| Acceptance Agent (AA) | 7-11 weeks | Low (agent reviews) | $50–$200 | Budget-conscious applicants |
Required Documents
You must submit original documents or certified copies from the issuing agency. Notarized copies are NOT accepted by the IRS.
- Passport: The only document that stands alone as proof of both identity and foreign status
- National ID card: Must be current and include photograph, name, address, date of birth, and expiration date
- Foreign driver's license: Only if issued within the last 12 months (in some cases)
- Visa: US visa stamp or approval notice (I-797) if applicable
- US tax return: Form 1040-NR or other federal tax return demonstrating the need for an ITIN
Document Warning
The IRS will return your original documents within 60 days via standard mail to the address on your W-7. If you mail your passport and the IRS loses it, recovery is difficult. Using a Certified Acceptance Agent eliminates this risk entirely.
Step-by-Step Application Process
Step 1: Determine Your Tax Filing Requirement
Non-resident LLC owners typically need an ITIN to:
- File Form 1040-NR reporting LLC distributive share income
- File Form 5472 for foreign-owned single-member LLCs
- Report US-source rental income, interest, or dividends
Step 2: Complete Form W-7
Download Form W-7 from IRS.gov. Key sections:
- Line a: Reason for applying (check box "a" for non-resident alien filing a US tax return)
- Line b: Additional information for dependents (if applicable)
- Line c: Your foreign address
- Line d: Your US mailing address (if any)
- Line e: Birth information
- Line f: Gender
- Line g: Country of citizenship
- Line h: Foreign tax ID number (if your home country issues one)
- Line i: Type of US visa (if applicable)
Step 3: Attach Your Tax Return
The IRS requires a valid federal tax return with your W-7 application. Exceptions exist for certain third-party reporting (e.g., Form 1099 recipients), but LLC owners generally must file a return.
Tax Return Tip
Do not file your tax return separately. Mail the W-7 and the tax return together to the IRS ITIN Operation address. The IRS will process the ITIN first, then attach it to your tax return.
Step 4: Choose Your Submission Method
Option A: Mail to IRS
- Mail Form W-7, original documents, and tax return to: IRS ITIN Operation, P.O. Box 149342, Austin, TX 78714-9342
- Use certified mail with return receipt
- Include a prepaid express mail envelope for document return if desired
Option B: Visit an IRS TAC
- Schedule an appointment at IRS.gov/TAC
- Bring original documents and the completed W-7
- An IRS employee will verify your documents in-person and forward the application
Option C: Use a Certified Acceptance Agent
- Find a CAA at IRS.gov (search "Acceptance Agent Program")
- The CAA verifies your documents, completes the W-7, and submits it electronically or by mail
- You keep your passport. The CAA certifies they verified it.
Step 5: Wait for Processing
Processing times:
- Peak season (Jan–Apr): 11+ weeks
- Off-season (May–Dec): 7-9 weeks
- Expedited: Not available for ITINs. Plan ahead.
Step 6: Receive Your ITIN Assignment Letter
The IRS sends a CP565 Notice assigning your ITIN. This letter is your official proof. Store it securely—you will need it for all future tax filings.
ITIN for LLC Tax Scenarios
| LLC Type | ITIN Needed? | Tax Forms |
|---|---|---|
| Single-member LLC (disregarded) | Yes, if owner is non-resident | Form 1040-NR, Schedule C, Form 5472 |
| Multi-member LLC (partnership) | Yes, for each foreign member | Form 1040-NR, Schedule K-1, Form 1065 |
| LLC taxed as C-Corp | Yes, for personal dividends | Form 1040-NR, Schedule B |
| LLC taxed as S-Corp | Yes, for salary + distributions | Form 1040-NR, W-2, Schedule E |
ITIN Renewal and Expiration
ITINs expire if not used on a federal tax return for three consecutive years. Additionally, certain ITINs issued before 2013 with middle digits 88, 90, 91, 92, 94, 95, 96, 97, 98, or 99 require renewal.
- Renewal process: Submit Form W-7 with box "f" checked (renewal) and your most recent tax return
- Timeline: Renew during the fall to avoid spring processing delays
- Family renewal: If one family member's ITIN expires, the entire household's ITINs may need renewal if filed together
ITIN + EIN Strategy
Apply for your LLC's EIN first (using your foreign address). Once you have LLC income to report, apply for your ITIN. You cannot use an ITIN to obtain an EIN online, but you can use a foreign address and responsible party information.
Common Application Mistakes
- Submitting notarized copies: The IRS rejects notarized copies. Use original documents or certified copies from the issuing government.
- No tax return attached: Applications without a qualifying tax return are rejected unless an exception applies.
- Incorrect reason box: Check the correct box on Line a. Non-resident aliens filing a US return check box "a. Nonresident alien required to get ITIN to file US tax return."
- Outdated Form W-7: Always download the latest revision from IRS.gov. Older versions are rejected.
- Mismatched names: The name on your W-7 must exactly match your passport or ID. Middle names, suffixes, and hyphenation must be consistent.
Get Your ITIN and Stay Compliant
Non-resident LLC owners must report US income to the IRS. An ITIN is your gateway to legal tax compliance. Apply early, use a Certified Acceptance Agent to protect your documents, and file your returns on time.