Section 01Who needs an ITIN, who does not
Not every Canadian dealing with Florida needs an ITIN. The trigger is a US tax filing or US tax-reporting obligation tied to your name and number. Plain visiting and spending money does not trigger anything.
You need an ITIN if any of the following applies to you, and you do not have an SSN:
- You earn rental income from a Florida property held in your personal name. You must file Form 1040-NR annually.
- You sell a Florida property as a non-resident. The closing agent withholds 15% under FIRPTA, and the only path to recover overwithholding is filing Form 1040-NR with an ITIN.
- You are a partner, member, or shareholder in a US LLC, partnership, or S-corp that files a US return reporting your distributive share of income.
- You receive US-source dividends, royalties, or other passive income that triggers Form 1040-NR.
- A US financial institution requires a tax ID to open or maintain an account in your name and accepts an ITIN.
You probably do not need an ITIN, today, if:
- You are buying a primary or secondary residence in Florida in your personal name with no rental income. The purchase itself does not trigger a US filing.
- You hold the Florida property in a US LLC that you taxed as a corporation, and the entity files its own return separate from you.
- You are a snowbird who spends time in Florida but earns no US-source income. The Substantial Presence Test plus closer-connection exception (Form 8840) is the relevant filing, and Form 8840 itself does not require an ITIN.
Section 02Form W-7: the application itself
Form W-7 is a one-page form. The IRS revises it periodically; the current version is dated December 2024 (per IRS Instructions for Form W-7).
The form requires:
- Application type. "Apply for a new ITIN" or "Renew an existing ITIN".
- Reason for needing the ITIN. A list of seven labeled categories (a through h). The most common categories for a Canadian:
- Box (b): Non-resident alien filing a US tax return. The W-7 is attached to the return itself.
- Box (a): Non-resident alien required to obtain an ITIN to claim a tax-treaty benefit. Used in some treaty-based filings.
- Exception categories: If you have a category-exception reason (a third-party withholding agent attestation, for example a US bank requesting the ITIN before opening an account), you do not attach a tax return. You attach the exception documentation instead.
- Personal data. Legal name as on passport, mailing address, foreign address, country of citizenship (Canada), foreign tax ID (your Canadian Social Insurance Number, if applicable; the IRS treats this as informational, not a substitute identifier), date of birth, US visa information if any.
- Supporting documentation. Proof of foreign status and identity. A valid Canadian passport satisfies both requirements alone. All other combinations require two documents.
- Signature and date.
Section 03The three submission paths
Path 1: by mail with original passport
You mail Form W-7, your tax return (or exception documentation), and your original valid Canadian passport to:
Internal Revenue Service ITIN Operation P.O. Box 149342 Austin, TX 78714-9342
The IRS keeps the passport for the duration of processing, then returns it to the address on Line 2 of the W-7 within 60 days of processing.
Path 2: through a Certifying Acceptance Agent (CAA)
A CAA is an individual or firm (often a CPA or specialized tax preparer) authorized by the IRS to certify the applicant's passport copy and supporting documents. The CAA reviews your W-7, certifies the documents, and submits the package to the IRS Austin Service Center directly. You keep your passport.
A list of IRS-authorized Acceptance Agents and Certifying Acceptance Agents is published at IRS.gov under "Acceptance Agent Program". Source 3. The list includes both US-based CAAs and a smaller number of Canadian-based CAAs. A Canadian-based CAA can save the cross-border-mail step entirely.
Path 3: in person at an IRS Taxpayer Assistance Center (TAC)
The IRS operates TACs across the United States. Some, but not all, offer ITIN services. A TAC can verify your passport and supporting documents on the spot, return them immediately, and forward the W-7 plus your tax return (if applicable) to the Austin Service Center.
A list of ITIN-service TACs is published at IRS.gov ("Find an IRS Taxpayer Assistance Center with ITIN services"). Source 4.
Section 04Comparison of the three paths
| Criterion | Mail with original passport | CAA | TAC in person |
|---|---|---|---|
| Cost | USD 0 (postage) | USD 100 to USD 500 | USD 0 |
| Passport custody | Surrendered for up to 60 days post-issue | Retained throughout | Returned same day |
| Geographic constraint | Anywhere | Anywhere with a CAA accessible to you | Must travel to a TAC |
| Error-recovery support | Direct IRS letters to applicant | CAA mediates | TAC reviews on the spot |
| Fit for Canadian non-resident | Acceptable if no urgent travel | Standard recommendation | Best if already in Florida |
| Processing time | 7 to 11 weeks | 7 to 11 weeks | 7 to 11 weeks |
The three paths use the same IRS processing queue. The CAA and TAC paths reduce error rates (and therefore reduce the risk of a CP566 "more information needed" notice that adds another 7 to 11 weeks).
Section 05Worked example: Quebec investor with two Florida rentals
Marie lives in Trois-Rivières, Quebec. In November 2025, she closed on two duplexes in West Palm Beach held in her personal name. Both properties have been rented since December 2025. Marie now needs to file Form 1040-NR for the 2025 tax year by June 15, 2026 (the automatic extension date for non-residents). Currency: USD throughout.
| Step | Action | Cost / time |
|---|---|---|
| 1 | February 2026: Engage a Florida-based bilingual CAA who is also a CPA. | USD 250 service fee |
| 2 | February 2026: Gather Canadian passport, prior-year Canadian tax return, and W-9-equivalent records of US rental gross income and expenses. | None |
| 3 | March 2026: CAA prepares Form 1040-NR plus Schedule E for the rental income, and Form W-7 attached to the return. | USD 950 tax-prep fee |
| 4 | March 2026: CAA certifies the passport copy and submits the W-7 + 1040-NR package to the IRS Austin Service Center. | None |
| 5 | April through May 2026: IRS processes the W-7. | 9 to 11 weeks (peak) |
| 6 | June 2026: ITIN issued. CP565 notice arrives by mail. The 1040-NR is then processed against the new ITIN. | Issued |
Section 06Common mistakes Canadians make
- Mailing the passport without a CAA path planned. The IRS does return it within 60 days, but a 60-day window without a passport during snowbird season can disrupt a planned Florida trip.
- Submitting the W-7 standalone without a tax return or category-exception documentation. The IRS will reject (CP567 notice). A W-7 needs either a return attached, or proof that you fit one of the exception categories (typically a third-party attestation).
- Using a Canadian SIN as a substitute identifier on the W-7. The IRS treats your SIN as informational on Line 6b. It is not a substitute for the ITIN application.
- Filing the W-7 separately from the tax return when the return is the W-7 trigger. The two documents must be submitted in one package, with W-7 stapled to the front of the 1040-NR. The IRS Austin Service Center processes the W-7 first, assigns the ITIN, then routes the return.
- Letting an issued ITIN expire by non-use. An ITIN that is not used on a federal tax return for three consecutive years expires on December 31 of the third year. A Canadian who sold their Florida rental in 2024 and stopped filing 1040-NR will lose the ITIN by the end of 2027 unless they file at least one return in those three years.
- Renewing late at peak season. A renewal filed in March that takes 11 weeks pushes you past the June 15 non-resident filing deadline. Renew in November or December for a clean cycle.
- Forgetting to update the IRS when the address changes. All IRS notices including CP565, CP566, CP567 go to the Line 2 address on the W-7. A Canadian who has moved between filings should file Form 8822 with the IRS to update the address before the next ITIN-related correspondence.
Section 07Actionable checklist
- Confirm SSN ineligibility. If eligible (work visa, lawful permanent residence, citizenship), pursue SSN; the rest of this list is for ITIN-route Canadians.
- Confirm the trigger that requires the ITIN (rental income, FIRPTA refund, US bank account opening, treaty position, partnership distribution).
- Identify a Florida-based or Canadian-based Certifying Acceptance Agent (CAA), or, if traveling to Florida, an ITIN-service Taxpayer Assistance Center (TAC).
- Gather: valid Canadian passport, mailing address (US or Canadian, both acceptable), foreign tax ID (SIN), date of birth, prior-year Canadian tax return, US tax return draft (if attaching a return).
- Complete Form W-7 (current revision: December 2024), or have the CAA complete it.
- Submit the package: mail (with original passport), CAA-certified by mail, or in person at a TAC.
- Wait 7 to 11 weeks. Track the date.
- Receive CP565 notice (ITIN issued), CP566 (more information), or CP567 (rejected). If CP566, respond within 45 days with the requested documentation.
- Once issued, store the ITIN securely. Use it on every subsequent US filing.
- Set a calendar reminder at year 2 of any non-filing period to file at least a minimum US return that year (or formally close the US tax footprint), preventing automatic expiration at year 3.
Section 08FAQ
Can I get an ITIN before I close on a Florida property?
Generally not, unless you fit one of the W-7 exception categories. The most common Canadian path requires a US tax return (1040-NR for rental income) attached to the W-7, and you cannot file a 1040-NR before the rental income exists. The exception path that does work pre-closing: a US bank or financial institution that requires a tax ID before opening an account can issue a third-party attestation that triggers Exception 1 on Form W-7. Some title companies will also issue a similar attestation pre-closing if asked.
How long is the ITIN valid?
Indefinitely, as long as it is used on a federal US tax return at least once every three consecutive years. After three years of non-use, the ITIN expires on December 31 of the third year and must be renewed before further filings.
Does my spouse need a separate ITIN?
If your spouse has any US tax footprint (claimed as a dependent on your 1040-NR, joint owner of a US property, beneficiary of a US-source distribution), they need their own ITIN. Two W-7 forms can be attached to a single tax return.
Can a child have an ITIN?
Yes. The IRS issues ITINs to dependents of any age. The supporting documentation rules differ for dependents under 18 (school records, medical records, or a passport with a US entry stamp may be required in addition to the passport). A CAA can certify the dependent's passport and birth certificate.
What is the difference between an ITIN and an SSN for credit purposes?
Federal US: under the Equal Credit Opportunity Act (15 U.S.C. § 1691), a lender cannot deny credit solely because the applicant uses an ITIN instead of an SSN. In practice, however, only certain issuers accept ITIN applications. See the Building US credit from zero guide for the issuer list.
Does an ITIN allow me to work in the US?
No. The ITIN is a tax processing number only. It does not authorize US employment, does not confer immigration status, and does not entitle the holder to Social Security benefits. Canadians who want to work in the US need a separate work-authorized visa and an SSN.
Does the IRS share ITIN information with US Customs and Border Protection or US immigration?
Federal US: Section 6103 of the Internal Revenue Code generally restricts the IRS from sharing taxpayer information with other federal agencies. The protection is statutory, not absolute, and exceptions exist for specific judicial and statutorily authorized data sharing. If your immigration status is sensitive, consult a US immigration attorney before applying.
Section 09What is not covered in this guide
- The mechanics of Form 1040-NR itself (which schedules to file, depreciation on rental property, treaty positions). This is covered in the chapter on rental income (forthcoming).
- The mechanics of the Foreign Account Tax Compliance Act (FATCA) reporting on US bank accounts opened with the ITIN. See the FATCA Form 8938 guide.
- The Canadian-side T1135 disclosure of US assets, which is independent of the ITIN. See the T1135 guide.
- ITIN application for non-Canadian foreign nationals. The procedural mechanics overlap, but country-of-citizenship documentation differs.
Section 10Logical next step
With the ITIN in hand, the next operational step depends on what triggered the ITIN application in the first place. For a buyer building US credit, the next read is the secured-card and credit-building workflow. For a seller managing FIRPTA, the next read is the FIRPTA refund-claim guide.