Notice. This page is an educational guide built on official U.S. Government sources and does not constitute legal, tax or immigration advice, nor does it replace professional review of your case. Rules change: the official source always prevails. Toro Taxes is not affiliated with any government agency. Full terms are at the bottom of the page.
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🧭 ITIN Navigator: where do I start?
Answer a few simple questions and we’ll point you to the sections of this guide that resemble your situation, the documents usually reviewed, and a sensible next step. It is not an approval or a determination — it’s a map for reading in the right order.
01 What the ITIN is (and what it is not)
The ITIN (Individual Taxpayer Identification Number) is a 9-digit number that always begins with 9, issued by the IRS to people who need a U.S. taxpayer identification number for federal tax purposes but are not eligible for a Social Security number (SSN).
Per the IRS, an ITIN does NOT:
- Authorize you to work legally in the United States.
- Provide or change immigration status.
- Qualify you for Social Security benefits or the Earned Income Tax Credit (EITC).
- Serve as identification outside the federal tax system.
What it does do: let a person meet federal tax obligations — file returns, appear correctly on withholding and information documents, and claim the benefits the law does allow with an ITIN (see the credits matrix).
02 ITIN vs SSN vs EIN — and the question that comes first
Three different numbers for three different things. Mixing them up is where many rejections begin.
| Number | Issued by | Purpose | Identifies | Key limits |
|---|---|---|---|---|
| SSN | SSA (Social Security Administration) — the only one not issued by the IRS | General identification and tax administration; basis for Social Security benefits | Individuals (citizens, residents, work-authorized) | If you’re SSN-eligible, that’s your number — an ITIN doesn’t substitute for it |
| ITIN | IRS | Federal tax processing for those who can’t get an SSN | Individuals (certain resident and nonresident aliens, their spouses and dependents) | Tax purposes only: no work authorization, no immigration status, no Social Security |
| EIN | IRS | Identifies business entities (also estates and trusts with income) | Entities (LLCs, corporations, partnerships…) | It identifies the company, not the person: a foreign partner may also need their own ITIN |
The IRS also issues the ATIN (temporary number for children in pending adoptions who can’t yet get an SSN) and the PTIN (for paid preparers). Source: the IRS TIN page.
First: are you eligible for an SSN?
- If you already have an SSN → use your SSN. The ITIN isn’t for you.
- If you’re eligible for an SSN (e.g., citizen, permanent resident, or a foreign national with a U.S. work visa) → the path is the SSA, not Form W-7.
- If an SSN application is pending → the IRS says don’t file Form W-7: wait for the SSA’s answer, and file the W-7 only if the SSA notifies you that you’re not eligible.
- If the SSA determined you’re not eligible → you generally must get the SSA’s denial letter and attach it to the W-7 (whether or not a return is attached).
- F-1, J-1 or M-1 students, professors and researchers who won’t work → may attach instead a letter from the Designated School Official (DSO) or Responsible Officer (RO) stating they won’t be employed. See students.
Important This guide doesn’t determine immigration or SSN eligibility: the SSA and each case’s rules do. Here we only point out the correct order of the process.
03 Why does the IRS require a “federal tax purpose”?
An ITIN isn’t issued just to “have a number.” There must be a recognized federal tax purpose — and that purpose decides which W-7 box you check and what you attach.
Typical examples of a federal tax purpose (educational, not exhaustive):
- Being required to file a federal return (1040 or 1040-NR).
- Claiming a refund of over-withheld tax.
- Reporting U.S.-source income.
- Appearing correctly on withholding or information documents a third party (bank, partnership, withholding agent) must file with the IRS.
- Claiming tax treaty benefits.
- Being a partner in a partnership doing business in the U.S. (see LLCs & partners).
- Certain real-estate transactions by foreign persons (FIRPTA, see real estate).
- Other scenarios the IRS contemplates in the W-7 and its exceptions.
04 Form W-7: the front door
Every ITIN — new or renewal — is requested with Form W-7 (a Spanish version, W-7(SP), exists). The current revision of the form and its instructions is December 2024 (verified August 2026).
The W-7 essentially asks for four things:
- Application type: new ITIN or renewal of an existing one.
- The reason (boxes a–h) you need the number — the most important part; see Reasons A–H.
- Your details: name, addresses, birth information, country(ies) of citizenship, visa if any, and — depending on the reason — extras like U.S. entry date, treaty country and article, or school/company.
- The attachments: generally the federal return that creates the reason, or the documentation for an exception, plus the identity documents.
05 W-7 reasons A–H: which one resembles your situation?
The W-7 requires checking the box that best explains why you need the ITIN. Here are the eight current categories (Rev. 12-2024), with official text and educational examples. Note: if you check b, c, d, e, f or g you generally must attach a federal return — unless you meet an exception.
aTax treaty benefitNonresident alien claiming a treaty benefit
Official text: “Nonresident alien required to get an ITIN to claim tax treaty benefit” — and the form requires also checking box h.
Usually appears when: a nonresident claims a reduced rate or exemption under a treaty (e.g., on interest, pensions or scholarships) even without a filing requirement.
The W-7 also asks for: treaty country and article number (the “Additional information for a and f” line), plus writing the applicable exception (1 or 2) next to box h.
bNonresident filing a returnNonresident alien filing a U.S. federal tax return
Official text: “Nonresident alien filing a U.S. federal tax return”.
Usually appears when: a nonresident must report income effectively (or not effectively) connected with a U.S. trade or business, or files solely to claim a refund of withheld tax. The 1040-NR travels with the W-7.
Educational example: a Mexican investor had 30% withheld on U.S. income; they file a 1040-NR to claim the difference and need an ITIN.
cResident by days of presenceU.S. resident alien filing a tax return
Official text: “U.S. resident alien (based on days present in the United States) filing a U.S. federal tax return”.
Usually appears when: someone spent enough days in the U.S. to become a tax resident under the “substantial presence” test and must file (1040) but isn’t SSN-eligible.
The W-7 also asks for: the U.S. entry date (line 6d).
dDependentDependent of U.S. citizen/resident alien
Official text: “Dependent of U.S. citizen/resident alien”.
Usually appears when: a child, parent or other relative without an SSN will be claimed on a citizen’s or resident’s return.
Key current rule: since 2018, spouses and dependents are not eligible for an ITIN (or renewal) unless claimed for an allowable tax benefit or filing their own return. The W-7 asks the relationship, the claimant’s name and SSN/ITIN and, as applicable, entry date and U.S. residency proof.
eSpouseSpouse of U.S. citizen/resident alien
Official text: “Spouse of U.S. citizen/resident alien”.
Usually appears when: a foreign spouse elects to file jointly (MFJ) with a citizen/resident spouse. The same “allowable tax benefit” rule of box d applies.
The W-7 also asks for: the citizen/resident spouse’s name and SSN/ITIN.
fStudent, professor or researcherNonresident student, professor or researcher
Official text: “Nonresident alien student, professor, or researcher filing a U.S. federal tax return or claiming an exception” (if claiming an exception, box h must also be checked).
Usually appears when: someone on an F, J or M visa receives a scholarship or income and must file, or claims a treaty/exception. See the full case.
The W-7 also asks for: lines 6a, 6c, 6d and 6g (school/company, city, length of stay) and — if a treaty applies — country and article.
gDependent/spouse of a visa holderDependent/spouse of a nonresident visa holder
Official text: “Dependent/spouse of a nonresident alien holding a U.S. visa”.
May apply when: the spouse or dependent of a foreign individual who remains a nonresident alien for U.S. tax purposes and holds a U.S. visa needs an ITIN for a federal tax purpose.
Important nuance The visa type by itself does not determine tax residency: a visa holder can become a resident for tax purposes under the substantial presence test. Nonresident status is evaluated under the Publication 519 rules (see nonresidents).
The W-7 also asks for: a copy of the visa and the entry date (6d).
hOther (exceptions)Other — the door to the 5 exceptions
Official text: “Other (see instructions)” — with a line to describe the reason.
Usually appears when: a third party (bank, partnership, withholding agent) subject to reporting/withholding asks you for an ITIN even though you won’t file a return. On the dotted line you write the exact exception, e.g. “Exception 1a-Partnership Income” or “Exception 3-Mortgage Interest”.
Note: with a valid exception, no return is attached. Publication 1915 has examples of W-7s completed under exceptions.
If more than one applies The instructions resolve it: check the box that best explains your reason. The only cases where TWO boxes are checked by mandate of the form are a and f-with-exception (both together with h).
06 Two routes: W-7 with a return, or W-7 under an exception
Every application travels one of these two routes. The official rule: a federal return is attached unless you meet one of the W-7’s exceptions.
W-7 + federal tax return
The W-7 is stapled to the return that creates the reason for the ITIN, and both travel together to the IRS (not e-filed).
- Form 1040 — tax residents (e.g., boxes c, d, e).
- Form 1040-NR — nonresidents (box b, and f with a return).
- Filed when the return is filed (with its normal due date).
W-7 + exception documentation
Only for those who meet one of the 5 authorized exceptions: instead of a return you attach the exact documentation the official table requires.
- Can be filed at any time of the year.
- The third party’s withholding or reporting must occur within the current tax year.
07 The 5 W-7 exceptions, under the magnifying glass
Transcribed from the official tables in the Form W-7 instructions (Rev. 12-2024). All share one condition: the third party’s withholding or information reporting must take place within the current tax year.
1Passive income — third-party withholdingPartnerships · bank accounts · distributions · treaties
Who it can be for: recipients of passive income (partnership income, interest, pensions, annuities, rental income, royalties, dividends) subject to IRS information reporting or federal withholding by a third party, or treaty benefits.
Official subcategories and their documentation:
- 1(a) Partnership: partners of a U.S. or foreign partnership that invests in the U.S. and owns assets generating income subject to withholding/reporting. Document: the portion of the partnership or LLC agreement showing the EIN and that you’re a partner in a partnership conducting business in the U.S.
- 1(b) Business bank account: an original signed letter from the bank, on official letterhead, confirming a business account generating effectively connected interest subject to withholding/reporting.
- 1(c) Individual account of a tax-resident: an original signed bank letter about the personal interest-bearing account subject to withholding/reporting.
- 1(d) Passive distributions: an original document or signed letter from the withholding agent (investment company, insurer, financial institution) verifying an ITIN is required for current-year distributions.
What it does NOT mean: that any partner or account holder automatically gets an ITIN — without current-year withholding/reporting and its exact document, the exception doesn’t apply. And if your case already requires filing a return, the normal route is the W-7 with that return.
Related forms Forms 1042-S, 8805 or K-1 document the third party’s withholding, but the current table requires the documents above (agreement or letters) as W-7 support — don’t confuse the two.
2Other incomeTreaty wages · scholarships · gambling
Official subcategories (not consolidated: each has different documents):
- 2(a) Wages/compensation/honoraria under a treaty: exempt or reduced-rate under a treaty and submitting Form 8233 to the payer. Documents: employment letter or contract (or event invitation letter), treaty evidence on the W-7, and a copy of the withholding agent’s completed portion of Form 8233.
- 2(b) Scholarships/fellowships/grants with a treaty: original award letter (or contract), passport with valid visa, treaty evidence, copy of Form W-8BEN given to the withholding agent, and an SSA ineligibility letter (replaceable by a DSO/RO letter for F-1/J-1/M-1 who won’t work).
- 2(c) Scholarships without a treaty: award letter or contract, passport with valid visa (no U.S. visa required if the foreign address is Canada or Mexico), an original DSO/RO letter confirming the current-year noncompensatory income subject to reporting/withholding (without it the application is denied), and the SSA letter (same substitution).
- 2(d) Gambling income: nonresident visitors with gambling winnings claiming a treaty and using the services of a gaming official acting as an IRS ITIN Acceptance Agent. Otherwise, the official alternative is filing a 1040-NR at year-end with the W-7 and a copy of Form 1042-S.
What it does NOT mean: that every scholarship or wage yields a return-free ITIN; each subcategory demands its complete documentation package.
3Mortgage interestLender’s third-party reporting (Form 1098)
Who it can be for: individuals with a home mortgage loan on U.S. real property — the lender will report the interest (Form 1098) and needs your TIN for that.
Official documentation: evidence of the home mortgage loan — a copy of the sales contract or similar documentation for the loan on U.S. property.
What it does NOT mean: that buying a house creates an ITIN by itself — the exception exists because of the lender’s reporting, not the purchase. (The 1098 is issued by the lender afterward; the current table asks for the contract, not the 1098.)
4Sale of U.S. property by a foreign personFIRPTA · the 8288 series
Who it can be for: a party to the disposition of a U.S. real property interest by a foreign person (seller, buyer or withholding agent), or with a notice of non-recognition under Reg. 1.1445-2(d)(2).
Official documentation: a completed Form 8288, 8288-A or 8288-B; plus a copy of the sales contract, Settlement Statement (HUD-1) or Closing Disclosure (or the non-recognition documents). Sellers attach copies of the contract and of the buyer’s Forms 8288/8288-A.
What it does NOT mean: that owning property generates an ITIN — the exception is triggered by the sale with FIRPTA withholding. Full case: real estate.
5T.D. 9363Foreign corporation’s representative with e-filing duties
The only real scenario: a non-U.S. representative of a foreign corporation who needs an ITIN to meet the company’s e-filing obligations under Treasury Decision 9363.
Official documentation: an original signed letter from the employer on corporate letterhead stating the ITIN is needed for T.D. 9363 and that you were designated responsible for information-reporting compliance. On the W-7 you write “Exception 5, T.D. 9363”.
What it does NOT mean: a general route for owners of foreign companies — it’s strictly for that representative role.
08 The 13 documents the IRS accepts
The short official formula: a passport, or two documents from the list. All must be current when you submit the package, and at least one must have a photo (except dependents under 14 — under 18 if a student).
| Document | Identity | Foreign status | Notes and special rules |
|---|---|---|---|
| Passport (valid) | Yes | Yes | The only stand-alone document. For dependents: if it has no U.S. entry date, see the nuance below. |
| USCIS photo identification | Yes | Yes | — |
| Visa issued by the U.S. Department of State | Yes | Yes | — |
| Foreign military identification card | Yes | Yes | — |
| National identification card | Yes | Yes | Must show photo, name, current address, date of birth and expiration date; must be current. |
| Foreign voter registration card | Yes | Yes | — |
| Civil birth certificate | Yes | Only if foreign | Required for applicants under 18 without a valid passport. Considered current at all times (no expiration). |
| Medical records | Yes | Only if foreign | Dependents under 6 only; care dated within 12 months of the application. |
| School records | Yes | Only if foreign | Dependents under 24 who are students; school term ending within 12 months of the application. |
| U.S. driver’s license | Yes | No | These four prove identity only: pair them with one that proves foreign status. |
| U.S. military identification card | Yes | No | |
| Foreign driver’s license | Yes | No | |
| U.S. state identification card | Yes | No |
List taken from the official “ITIN supporting documents” page (reviewed by the IRS on 22-Jul-2026, same date in EN and ES).
Option A: passport · Option B: two documents
- Option A — Valid passport: proves identity and foreign status on its own. Dependent nuance: a passport without a U.S. entry date stops being stand-alone — add age-based proof of U.S. residency (see dependents). Exempt: dependents of U.S. military abroad and certain Mexico/Canada cases.
- Option B — Two documents: one proving identity and another proving foreign status (or one proving both + another), with at least one photo between them (age exception aside), names and dates consistent with each other and with the W-7, and all current.
Original vs certified copy vs notarized copy
Original, or a copy certified by the issuing agency
A certified copy comes from the same agency that issued the document (e.g., your country’s passport authority) with its official stamped seal. It’s an exact copy certified by the issuer.
Notarized copy
The IRS says it plainly: “We don’t accept notarized documents.” A copy signed before a notary does not substitute for the issuing agency’s certified copy. Only current exception: dependents and spouses of U.S. military personnel applying from an overseas or APO/FPO address (attaching a copy of the servicemember’s military ID).
09 ITINs for dependents: what changes
Dependents carry two extra layers: (1) since 2018 they’re only eligible when claimed for an allowable tax benefit or when filing their own return; and (2) if their passport lacks a U.S. entry date, they must prove U.S. residency by age group.
Proof of U.S. residency, by age
| Dependent’s age | Documents the IRS accepts as residency proof |
|---|---|
| Under 6 | U.S. medical record · U.S. school record · U.S. state ID card · U.S. visa |
| 6 to under 18 | U.S. school record · U.S. state ID card · U.S. driver’s license · U.S. visa |
| 18 or older | U.S. school record (students under 24 only) · state ID or driver’s license · visa · U.S. bank statement, rental statement or utility bill listing the applicant’s name and U.S. address |
A dependent’s passport with a U.S. entry date proves residency on its own. Medical/school records have a 12-month freshness limit.
Special rules
- Dependents from Mexico and Canada: the IRS contemplates cases where U.S. residency proof isn’t required depending on the benefit claimed (with specific rules that currently exclude the Credit for Other Dependents from that dispensation). These rules come from the 2018–2025 framework and may change for 2026: confirm them in the current W-7 instructions before assembling the package.
- Dependents of U.S. military stationed abroad: exempt from residency proof; they may also submit notarized copies when applying from overseas or APO/FPO (with a copy of the servicemember’s ID).
- Allowable benefit: today’s typical example is the Credit for Other Dependents (ODC) — a child with an ITIN does not yield the Child Tax Credit (CTC), but may yield ODC. See the credits matrix.
- In person: if the family applies at a TAC, each spouse and dependent must appear in person with their own package.
10 How the application is filed
The IRS recognizes several routes. In all of them the package is the same: W-7 + return (or exception documentation) + identity and foreign-status documents.
To the IRS center in Austin
U.S. mail: Internal Revenue Service, Austin Service Center, ITIN Operation, P.O. Box 149342, Austin, TX 78714-9342. Private courier (FedEx/UPS/DHL): ITIN Operation, Mail Stop 6090-AUSC, 3651 S. Interregional Hwy 35, Austin, TX 78741-0000.
- Send originals or copies certified by the issuing agency.
- The IRS returns originals within 60 days (see timeline).
Taxpayer Assistance Center (TAC)
By appointment at 844-545-5640 (getting one can take weeks). TACs authenticate documents on the spot — they don’t travel to Austin — except dependents’ school and medical records.
- Each spouse or dependent applying must come in person with their package.
VITA sites with ITIN service
Some volunteer tax-help (VITA) sites prepare ITIN applications at no cost during the season. Availability varies by location.
IRS-recognized agents
The IRS authorizes Acceptance Agents and Certifying Acceptance Agents (CAAs) in and outside the U.S.; the official directory is published by state and by country. A CAA can authenticate certain identity documents for the applicant and spouse (for dependents, passports and birth certificates only).
🌎 I’m outside the United States
If you’re abroad, the real routes today are three — the IRS closed its overseas offices (London, Paris, Frankfurt, Beijing), so “going to the IRS office” is no longer an option outside the U.S.:
- Mail to Austin with originals or issuing-agency certified copies (e.g., your country’s passport authority). Consider the time without a passport if you mail the original.
- An IRS-authorized acceptance agent (including CAAs), in your country or in the U.S. — the IRS publishes it verbatim: “either in the United States or abroad”. Official directory by state and by country (coverage varies a lot by country).
- An IRS TAC — only if you travel to the U.S. (in-person verification by appointment).
Timelines from overseas The IRS publishes 9–11 weeks for applications from abroad. For international questions there’s +1 267-941-1000 (not toll-free). This scenario is typical for Mexico and Canada, foreign partners of partnerships, 1040-NR filers, FIRPTA cases and investors with no U.S. physical presence.
11 After you send it: what to expect and when
The typical application timeline, with the timeframes the IRS publishes today (they can always change; the source governs).
You prepare the W-7
With the correct reason (a–h) and every field complete — no blanks.
You attach a return or an exception
The federal return creating the reason, or your exception’s exact documentation.
You attach the documents
Passport (or two documents), originals or issuing-agency certified copies.
You send it your way
Mail to Austin, TAC by appointment, VITA or a recognized agent.
The IRS reviews
Published timeframe: 7 weeks to notify you of status; 9–11 weeks during tax season (Jan 15 – Apr 30) or from overseas. (In August 2026 the IRS reported processing in ~11 weeks.)
The IRS may ask for more
If something’s missing, a CP566 notice arrives with 45 days to respond.
Your return follows its course
If you attached a return, the IRS processes it according to the ITIN outcome.
What about my original documents?
- The IRS currently says it returns documents within 60 days, to the address on line 2 of the W-7.
- If they don’t arrive in 60 days: call 800-908-9982 (U.S.) or +1 267-941-1000 (international).
- If you’ll need your passport within those 60 days, the IRS itself suggests considering the in-person route (TAC or CAA) instead of mailing the original.
12 I got a letter: CP565, CP566, CP567
Three different notices with three different meanings. Find the number on the corner of your letter.
The IRS assigned your ITIN ✅
The official confirmation. No response required.
- Check that your name and date of birth are correct.
- Keep the letter (you’ll want it, e.g., to combine records if you ever get an SSN).
- Use the ITIN on federal returns and information documents.
- Your documents come back within 60 days of the notice date.
Information is missing ⚠️
The IRS needs more information: an incomplete form or the wrong documents. You have 45 days from the notice date.
- Read exactly what they ask; recheck eligibility (ITIN or SSN?).
- Complete and sign the response form at the end of the notice and mail it with what’s requested (certified English translations if applicable).
- Don’t ignore it: if you don’t reply and the application is rejected, your return is processed without an ITIN and the refund will require reapplying.
Application rejected ❌
The IRS rejected the application (or revoked an ITIN). The letter explains why.
- Read the reason; check whether you’re actually SSN-eligible.
- Review your documents’ validity and expiration.
- Depending on the case: send what was missing, or file a complete new application.
- If a return was attached: it’s processed without the ITIN; for the refund, reapply attaching a copy of the return.
- Not every CP567 is an “easy fix”: it depends on the reason — a case for careful review.
Other related notices The CP48 was the notice of the mass-renewal campaigns (2016–2020); today the IRS no longer maintains an explanatory CP48 page — don’t wait for that letter to renew. The CP54 series (B/G) flags a name/ID mismatch on your return: respond with the notice’s form and, if an ITIN is involved, contact the IRS ITIN operation.
13 Renewal: when yes, and when not yet
There’s one current rule: if an ITIN isn’t used on a U.S. federal tax return for any 3 consecutive tax years, it expires on December 31 after the third year of non-use.
If the ITIN will go on a federal return
- An expired ITIN that will appear on your next return (yours, your spouse’s, or a dependent claimed for an allowable benefit).
- Every ITIN issued before 2013 and never renewed is expired: renew it with the return.
- Filing with an expired ITIN = delays and possibly lost credits until renewed.
If it only appears on information documents
- The IRS says it verbatim: if your ITIN is only used on third-party information returns (like Form 1099), you don’t need to renew it for now.
- Whenever you file an income tax return again, renew it then.
- And if you now have an SSN: no renewal — see ITIN → SSN.
How it’s renewed
- The same Form W-7, marking “Renew an existing ITIN”, with the original ITIN and name on lines 6e/6f.
- With the same current identity documentation as a new application (plus the SSA denial letter if applicable).
- The current W-7 instructions call for attaching the federal return unless you meet an exception — the normal practical flow is renewing together with your return.
- Legal name change (marriage, court order): attach the marriage certificate or the supporting order.
- Spouses and dependents: they renew only when filing their own return or being claimed for an allowable benefit (listed on the attached return with the benefit’s schedule/form).
- Not sure whether your ITIN was used in the last 3 years? The IRS suggests checking your filing history with an IRS online account.
14 I got an SSN: what happens to my ITIN?
Once you receive an SSN, the ITIN is retired. The IRS says it verbatim: use the SSN for tax purposes and discontinue using your ITIN.
Use your SSN from now on
On returns, with your employer and on every tax document. You can’t use both numbers.
Notify the IRS to combine your records
It’s your responsibility to notify them, so your whole history (reported wages, withholding, returns) sits under one number. It’s done by visiting an IRS office or by letter.
What the letter includes
Your full name, mailing address, your ITIN, a copy of your Social Security card and a copy of the CP565 notice (if available). Address published today: Internal Revenue Service, Austin, TX 73301-0057.
The IRS voids the ITIN
And associates all prior information with the SSN. Skipping this step can cost you credit for prior wages and withholding — even refunds.
Clarity The SSN is issued by the Social Security Administration (SSA), not the IRS or any preparer. This step only applies once the SSA has assigned it.
15 Special and international cases
Five scenarios that walk into our office every day — explained without promises, with sources.
🏢Does having an LLC mean I need an ITIN?Partners, partnerships, K-1s, withholding
Short answer: not necessarily. Forming an LLC doesn’t generate an ITIN by itself. What can generate one is the personal tax obligation that the company’s activity creates for you.
Scenarios where it does tend to appear:
- Multi-member LLC (partnership): it issues a Schedule K-1 to each partner; a foreign partner with U.S. income may have to file a 1040-NR → ITIN via the return route (reasons b/h).
- Withholding on foreign partners (§1446): the partnership withholds on the foreign partner’s share and reports it on Form 8805 — the partner needs a TIN to appear correctly and to credit that withholding on their 1040-NR.
- Exception 1(a): with current-year withholding/reporting, the partner may qualify to request the ITIN without a return, attaching the partnership/LLC agreement portion showing the EIN (see exceptions).
- Foreign-owned single-member LLC: the entity’s typical obligations (Form 5472 + pro forma 1120) use the company’s EIN; the personal ITIN appears when the owner also has a personal filing obligation (e.g., effectively connected income). They’re separate filings best reviewed together.
Never true “Foreign LLC = automatic ITIN.” Every case anchors to a concrete obligation: K-1, 8805, 1040-NR or a documented exception.
🌎ITINs for nonresident aliens1040-NR, 1042-S, withholding
The core idea: a nonresident files Form 1040-NR when they had a U.S. trade or business (“effectively connected” income, taxed at graduated rates), when U.S.-source income wasn’t fully withheld upon, or to recover over-withheld tax (e.g., 30% withheld on passive income when a treaty allowed less, reported on a 1042-S). To file that 1040-NR without an SSN… an ITIN is required: the W-7 travels attached to the return.
- Due dates: April 15 with wages subject to U.S. withholding; June 15 otherwise (calendar year).
- Tax residency: before choosing 1040 vs 1040-NR you check the green card test, substantial presence (with F/J/M/Q exempt days via Form 8843), closer connection (Form 8840) and dual-status years — Publication 519.
Scope This isn’t an international tax course: it’s the map of why a nonresident ends up needing an ITIN. The concrete case requires review.
🏠Foreign owners of U.S. real estateRental · sale (FIRPTA) · the 8288 series
Two different situations that often get mixed up:
- Rental: by default, a nonresident’s rental income is taxed at 30% on the gross. With the §871(d) election (declared on the 1040-NR) it’s taxed on net income with deductions — which means filing a 1040-NR every year, and for that the owner needs an ITIN.
- Sale (FIRPTA): on a sale, the buyer generally withholds 15% of the gross price (10% for certain residences from $300,001 to $1M; 0% for residences of $300,000 or less) and remits it with Forms 8288 and 8288-A within 20 days. The foreign seller needs an ITIN so the IRS stamps their copy of the 8288-A — without a TIN the IRS won’t send the stamped copy (Letter 3794), and without it there’s no credit or refund of that withholding. Form 8288-B asks the IRS to reduce or eliminate the withholding when the actual tax will be lower.
The ITIN can be requested as soon as there’s a binding sales contract (Exception 4, with the 8288 series and the contract/Closing Disclosure) or with the sale’s 1040-NR.
Golden rule Buying property, by itself, doesn’t create a right to an ITIN. Net-election rentals, FIRPTA sales or mortgage reporting do create concrete filings.
🤝ITINs and tax treatiesReduced rate · country & article · Form 8833
A treaty benefit means that, under the convention between the U.S. and your country of tax residence, certain income is taxed at a reduced rate or exempt. It depends on tax residence, not citizenship.
- On the W-7 it’s claimed via reasons a or f (+h), writing the treaty country and article number, generally under Exceptions 1 or 2.
- Form 8833 discloses certain treaty positions on the return (a $1,000 penalty may apply when required and omitted); reduced withholding on typical passive income (dividends, interest, rents) generally does not require an 8833.
- References: Publication 901 (overview) and each country’s treaty text (the IRS A–Z index).
Limit This guide doesn’t determine treaty eligibility: the applicable article and its conditions are reviewed case by case against the official text.
🎓Students, professors and researchersF-1 · J-1 · M-1 · scholarships · reason F
The W-7’s box f case: a person who hasn’t abandoned their foreign residence and is a bona fide student, professor or researcher in the U.S.
- With a return: taxable scholarships or income that require filing → W-7 + 1040-NR.
- Under an exception: treaty scholarships (Exception 2(b), with a W-8BEN) or without a treaty (2(c), with the mandatory DSO/RO letter) — see the exact packages in exceptions.
- SSA first: if they can get an SSN (e.g., with on-campus work authorization), the SSA is the path. If they won’t work, the DSO/RO letter replaces the SSA denial letter.
- Exempt days: days in F/J/M/Q status don’t count toward substantial presence (with year limits); they’re declared on Form 8843.
- The W-7 also asks for visa, entry date, institution and length of stay (lines 6a–6g).
Clear boundary This is about tax identification; none of it is immigration or visa advice.
16 Credits and benefits: whose ITIN?
The right question is never “does this credit accept an ITIN?” but what number does it require for the taxpayer, the spouse, and the child or dependent? Matrix for tax year 2025 (returns filed in 2026), already reflecting the July 2025 law.
| Benefit (TY2025) | Taxpayer | Spouse (MFJ) | Child / dependent | Key notes |
|---|---|---|---|---|
| EITC (earned income) | Work-valid SSN | Work-valid SSN | Work-valid SSN | No EITC with an ITIN. Issued by the due date (with extensions). If the child lacks an SSN, the “self-only” EITC may exist. |
| CTC / ACTC (child credit) | SSN (new for TY2025) | One SSN between both is enough; the other may hold an ITIN | Work-valid SSN | 2025 law change: the filer needs an SSN (on a joint return, at least one). Child with ITIN → no CTC (evaluate ODC). |
| ODC (other dependents, $500) | See note | See note | SSN, ITIN or ATIN | A dependent with an ITIN can qualify (U.S. resident). Issued by the due date. The filer-SSN rule is written for CTC/ACTC; the all-ITIN-filer ODC case is confirmed in the year’s Schedule 8812. |
| AOTC (education) | SSN, ITIN or ATIN | SSN, ITIN or ATIN | Student: SSN, ITIN or ATIN | If the TIN is applied for by the due date and later issued, it counts as timely — key for a W-7 attached to the return. |
| PTC (Marketplace) | Valid ITIN | Valid ITIN | — | No SSN requirement; a lawful-presence requirement applies to the covered person. 2026 changes coming (repayment cap ends; income limits return). |
| CDCC (dependent care) | Valid ITIN | Valid ITIN | SSN; or ITIN/ATIN if an SSN can’t be obtained | Requires earned income of both spouses and the care provider’s details (EIN/SSN). |
| Married filing jointly (MFJ) | — | Spouse may hold an ITIN | — | With a nonresident spouse there’s the election to treat them as a resident (statement signed by both; worldwide income becomes taxable). |
| Head of household (HoH) | Valid ITIN | — | Qualifying person may hold an ITIN | Married to a nonresident spouse? You may be “considered unmarried” for HoH if you don’t make the election (the spouse doesn’t count as the qualifying person). |
Sources: Schedule 8812 instructions (2025), each credit’s official pages and Publications 501/596/503 (2025). Year-2026 amounts and rules will be confirmed when the IRS publishes that year’s instructions.
17 Errors that may delay or result in rejection of an application
Each of these can cause a delay, a CP566 or a rejection — none “guarantees” anything, but all of them cost weeks.
- Applying for an ITIN while SSN-eligible (or with an SSN application pending).
- Incomplete W-7: blank fields, missing signature or date.
- Checking a reason (a–h) that doesn’t match the real case.
- Claiming an exception without its exact document package.
- Failing to show a federal tax purpose (neither return nor exception).
- Expired documents at submission time.
- Sending plain photocopies — or confusing a notarized copy with a copy certified by the issuing agency.
- Inconsistent names or birth dates across documents and the W-7.
- Not proving foreign status (two documents that only prove identity).
- A dependent without U.S. residency proof when the passport lacks an entry date.
- Omitting the return when it was required (the chosen reason demanded it).
- Ignoring a CP566: if the IRS does not receive a response within the stated period, the application may be rejected and the return is processed without an ITIN.
The pattern Almost all of these are avoided by carefully reviewing the complete package before sending it. That’s exactly what a case review is for.
18 ITINs, banks and the 2026 regulatory context
2026 brought regulatory news addressed to banks — not to the IRS’s criteria. Here’s the context, in neutral tone and with primary sources.
- In May 2026, Executive Order 14406 was signed, addressed to the financial system; in June, Treasury (FinCEN, with FDIC, OCC and NCUA, in coordination with the IRS) issued an advisory for financial institutions (FIN-2026-A002).
- The advisory asks banks to apply their risk-based due diligence (the usual frameworks: BSA, CIP/KYC) and to consider the use of an ITIN within the totality of factors when opening accounts or extending credit — the document itself stresses that no single red flag is determinative and that no customer type carries uniform risk.
- In practice: an ITIN doesn’t guarantee an account will be opened, and it doesn’t automatically mean rejection either. Each institution applies its own requirements.
- None of this changes the IRS’s criteria for issuing ITINs or the duty to use one for federal tax purposes — the advisory itself restates the ITIN’s tax definition.
- Keep the planes separate: tax administration (IRS) and bank regulation (Treasury/FinCEN) are different frameworks; and neither defines immigration status.
19 Protect yourself: how the IRS actually makes contact
Rewritten with the IRS’s current guidance (consulted August 2026). The mother rule: the IRS initiates most contacts by postal mail.
The normal way
- First contact normally arrives by letter via the U.S. Postal Service.
- There can be phone calls about your account — usually after they’ve written to you.
- Emails or texts only if you opted in to those alerts.
- Unannounced visits are rare: today’s normal practice is sending a letter (like the 725-B) to schedule; real employees carry official photo credentials with a serial number you can ask to see. (The exception: criminal investigations.)
- A physical letter is not automatically fake — the CP565/566/567 notices arrive precisely by mail. Verify it on IRS.gov or call us before acting.
- Payments: official electronic channels exist (Direct Pay, EFTPS, card) at irs.gov/payments; checks are made out to “United States Treasury”.
How scammers act
- They demand immediate payment by ONE method: gift cards, cryptocurrency or a wire to third parties. (Official methods exist — the fraudulent part is the demand.)
- They threaten arrest or deportation — a verbatim impersonator tactic; the real IRS lets you question and appeal what you owe.
- Direct messages on social media: the IRS says that’s never them.
- Unsolicited emails/texts asking for personal or financial data, or with suspicious links — don’t open them; check that the site starts with https:// and ends in .gov.
- Promises of huge “guaranteed” refunds, or ghost preparers who won’t sign the return.
- Report phishing: forward the email to phishing@irs.gov; forward scam texts also to 7726 (SPAM).
- Impersonation calls: report them to the inspector general (TIGTA), tel. 800-366-4484.
- When in doubt, verify directly at IRS.gov — or contact us and we’ll review it with you.
20 Official ITIN library
Every primary source behind this guide, organized by topic. Each link shows agency, available language and type. Last internal check of all links: August 23, 2026.
AITIN core
What it is, applying, renewing, documents, FAQs
BForm W-7 and publications
The form, its instructions and the IRS guides
CIRS notices
CP565 · CP566 · CP567 · CP54
DInternational
From abroad · 1040-NR · treaties · FIRPTA
EFraud and financial context
How the IRS makes contact · scams · EO 14406 / FinCEN
More IRS resources? General IRS news and state-by-state resources live in our CreceConToro Link Center ↗ — this ITIN Center stays focused on its topic.
❓ Frequently asked questions
Short answers linking to the full module.
What is the ITIN?
Does the ITIN let me work in the U.S.?
Does the ITIN change my immigration status?
Do I need an ITIN if I have an SSN?
What if I’m SSN-eligible or my SSN is pending?
Can I apply for an ITIN from Mexico?
Must I always attach a return to the W-7?
What are the “Exceptions”?
Which documents does the IRS accept?
Is the passport enough?
Can I send a photocopy?
Does a notarized copy work?
What does a dependent need?
What if the dependent’s passport shows no U.S. entry?
How long does it take?
What does the CP565 mean?
What does the CP566 mean?
What does the CP567 mean?
When does an ITIN expire?
When is it renewed?
What happens if I get an SSN?
Do I need an ITIN because I have an LLC?
Can a foreign partner need an ITIN?
What’s the connection with the 1040-NR?
What’s the connection with FIRPTA?
Does an ITIN guarantee a bank account?
Does the ITIN entitle me to the Child Tax Credit?
Want us to review your ITIN case?
At Toro Taxes we help you understand your situation with clarity, in your language and under the current rules — no impossible promises.
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