What an ITIN Application Costs a Canadian: The W-7, the Certifying Acceptance Agent, and the Return That Has to Come With It

The ITIN is the US tax identifier for people who can't get a Social Security number, and Canadians meet it when they sell US property, earn US rental income, receive US-source income requiring a return, or appear on a US return as a spouse or dependant. Who needs one: a Canadian filing a Form 1040-NR (rental income under the net election, a US property sale with FIRPTA, US business income, a refund claim of over-withheld tax), a Canadian spouse being claimed or included on a US person's return (the joint election), a Canadian dependant of a US filer, and a Canadian receiving certain US payments where the payer requires a US identifier for treaty benefits — the ITIN guide covers the who; this guide covers the cost. Who doesn't: a Canadian whose only US income is investment income withheld at treaty rates on a W-8BEN (the W-8BEN needs no US identifier for most treaty claims — the Canadian social insurance number or no number suffices), a Canadian selling US property who obtains the ITIN as part of the FIRPTA process (they do need one — but at the sale, not before), and a Canadian corporation (which uses an EIN — the EIN guide). The process and its constraints: Form W-7 is filed with a US federal tax return (the return is the reason the IRS issues the number — an ITIN is not issued in a vacuum) unless an exception applies (the exceptions cover passive income subject to third-party withholding where the payer requires an ITIN, certain mortgage-interest and property-sale situations including FIRPTA withholding certificates, and a few others — each documented in the W-7 instructions with the supporting evidence the exception requires); the applicant proves identity and foreign status with original documents (a passport suffices alone) or certified copies from the issuing agency — mailing an original Canadian passport to the IRS for months is the reason the alternatives exist; a Certifying Acceptance Agent (CAA) — an IRS-authorized individual or firm — verifies the documents in person or by video, certifies them on the W-7, and submits the application, so the passport never leaves the applicant's hands; the IRS's processing time runs weeks to months (longer in filing season), and the return the W-7 accompanies is held until the ITIN issues; and the ITIN expires if unused on a return for three consecutive years, requiring renewal by W-7 again. The fee components: the IRS fee — none; the CAA's fee — a flat charge for the verification and submission, in the low-to-mid hundreds in the current market, per applicant (a family applying for a spouse and two dependants pays per person); the return the W-7 rides on — the 1040-NR or the US person's return, priced on its own (the personal-return and dual-status cost guides), which is usually the largest component and is needed regardless of the ITIN; the exception documentation, where an exception applies instead of a return — the withholding agent's letter, the FIRPTA certificate application (Form 8288-B, its own engagement), or the mortgage or property documents, assembled and priced with the application; the certified-copy route, where no CAA is used — the issuing agency's fee for certified copies (Passport Canada's certified true copy service, where available) and the mailing; and the renewal — a W-7 again, with a CAA or certified copies, every time the number lapses. The total, by situation: a Canadian selling a Florida property — the ITIN application through a CAA as part of the FIRPTA process (the 8288-B exception or with the 1040-NR reporting the sale), the CAA fee plus the sale's return, with the ITIN a small line in a larger engagement; a Canadian landlord's first year of a US rental — the W-7 with the first 1040-NR under the net election, CAA fee plus the return, with the ITIN issued before the second year's return; a Canadian spouse of a US citizen electing joint filing — the W-7 with the joint return, CAA fee plus the return's incremental cost for the spouse's inclusion; a Canadian family with two children being claimed on a US parent's return — three W-7s (three CAA fees) with the return, and the children's SSN eligibility checked first, because a child who is a US citizen by descent gets an SSN, not an ITIN (the child tax credit requires an SSN — the child credit guide). How to avoid paying twice: apply with the return that needs the number rather than in advance (an ITIN applied for without a qualifying return or exception is rejected, and the fee is spent); use a CAA rather than mailing the passport (the certified-copy route's delays and the risk of a rejected copy cost more than the CAA's fee); check SSN eligibility before applying for a child or spouse who may be a US citizen (the wrong identifier is a rejected credit later); keep the ITIN in use (a return every third year at least, or the renewal fee recurs); and — for the FIRPTA seller — apply through the 8288-B exception at signing, so the withholding certificate and the ITIN move together. The Canadian-side note: the ITIN has no Canadian counterpart requirement — a Canadian's Canadian filings use the SIN, and the ITIN appears only on US documents; but the US returns the ITIN enables generate the US tax that the Canadian return credits, so the two engagements are coordinated. Fairlight's ITIN, 1040-NR, and FIRPTA pricing is on the pricing page; the component structure above is what any ITIN engagement costs.

Key takeaways

• The IRS fee is zero; the cost is everything around it: the CAA's flat fee per applicant (low-to-mid hundreds), the US return the W-7 must accompany (the largest component, needed regardless), or the exception documentation in lieu of a return.
• The W-7 rides on a return or an exception: rental income under the net election, a FIRPTA sale (the 8288-B exception at signing), a joint-return spouse, a dependant — or the passive-income and property exceptions in the instructions; an ITIN applied for alone is rejected.
• Use a Certifying Acceptance Agent: the passport stays in your hands, the documents are certified on the W-7, and the delays and rejection risk of mailed certified copies are avoided — worth the fee.
• Check SSN eligibility first for spouses and children: a US citizen by descent gets an SSN, and the child tax credit requires one — the wrong identifier is a lost credit.
• Processing takes months and the return waits; the ITIN expires after three unused years and the W-7 recurs.
• Situational totals: a small line inside a FIRPTA sale or a first rental return; per-person CAA fees for families; the return is always the larger number.

The ITIN engagement, sequenced

Confirm the need (a return or exception exists) and rule out SSN eligibility. Choose the route (CAA, almost always). Assemble the return or exception documentation the W-7 accompanies. Verify documents with the CAA (in person or video). Submit W-7 with the return or exception package. Track processing; file the return the ITIN was issued for. Calendar the three-year use rule. For FIRPTA sellers: the 8288-B and W-7 filed together at signing. The sequence is a month of lead time the closing or filing deadline has to accommodate.

Worked example

Three Canadians, three ITIN engagements. One: a Toronto retiree selling a Naples condo — the W-7 is filed under the FIRPTA exception with the Form 8288-B withholding certificate application the day the sale agreement is signed, through a CAA who verifies her passport by video; the ITIN and the certificate issue before closing, the withholding is reduced to the actual tax, and the 1040-NR reporting the sale uses the number; the ITIN was a small line in a FIRPTA engagement. Two: a Calgary couple in their first year of renting out an Arizona house — two W-7s (both on title) with their first joint-owner 1040-NRs under the net election, CAA fees for both, the returns held until the ITINs issued four months later; from the second year the returns e-file normally. Three: a US citizen in Ottawa married to a Canadian, with two Canadian-born children, whose prior preparer had applied for ITINs for the whole family — the review finds both children are US citizens by descent (the transmission rules) and eligible for SSNs; the children's ITIN applications are withdrawn, their SSNs obtained through the consular report-of-birth process, and the refundable child tax credit — unavailable with ITINs — is claimed for the first time; the spouse's ITIN proceeds with the joint election through a CAA. Three engagements, one IRS fee of zero each, and the third one's largest saving was the identifier nobody had checked.

Official sources

The IRS explains that "an ITIN is a 9-digit number the IRS issues if you need a U.S. taxpayer identification number for federal tax purposes, but you aren't eligible for a Social Security number," obtained by filing Form W-7 with documentation of identity and foreign status. — Internal Revenue Service, Individual Taxpayer Identification Number (ITIN), https://www.irs.gov/individuals/individual-taxpayer-identification-number

The IRS explains that a Certifying Acceptance Agent is authorized to verify an ITIN applicant's identity and foreign status documents so that originals need not be mailed to the IRS, and to submit the Form W-7 application on the applicant's behalf. — Internal Revenue Service, Acceptance Agent Program, https://www.irs.gov/individuals/international-taxpayers/acceptance-agent-program

Practitioner note

The ITIN is free from the IRS and never free in practice, because it rides on a return or an exception and needs certified identity — and the cost that matters is the return, which the client needed anyway. Our engagement uses a Certifying Acceptance Agent every time (the mailed passport is a false economy), files FIRPTA sellers' W-7s with the 8288-B at signing, and checks SSN eligibility before any child's or spouse's application — because the most expensive ITIN we see is the one issued to a US citizen whose refundable credit it then forfeited.

See also: For related pricing, see what cross-border bookkeeping costs for a Canadian with US income.

Next step

Fairlight handles ITIN applications through a Certifying Acceptance Agent, with the 1040-NR, FIRPTA certificate, or joint-return engagement the W-7 accompanies, and SSN-eligibility screening for spouses and children. See pricing or book a call.