FIRPTA for Canadians Selling US Property: The 15% Withholding Explained

What Is FIRPTA and Why Does It Hit Canadians So Hard?

The Foreign Investment in Real Property Tax Act — FIRPTA — was enacted by the US Congress in 1980 to ensure that foreign nationals who sell US real estate pay their share of US capital gains tax. The mechanism is simple: rather than trusting the seller (who may leave the country before any tax bill arrives) to file and pay voluntarily, Congress put the obligation on the buyer. When a foreign person sells US real property, the buyer is legally required to withhold a percentage of the sale price at closing and send it directly to the IRS.

For Canadians, FIRPTA lands hard because of one counterintuitive feature: the withholding is calculated on the gross sale price, not the gain. A Canadian who bought a Fort Lauderdale condo for $380,000, sold it for $400,000, and made a modest $20,000 US gain still has $60,000 (15% × $400,000) withheld at closing. The IRS holds that $60,000 while the actual tax on a $20,000 long-term gain — at the 15% US capital gains rate for most non-residents — would be approximately $3,000. The remaining $57,000 is eventually refunded, but it takes 6–12 months to arrive.

This cash flow disruption is why FIRPTA deserves its own guide — and why careful planning before listing your US property can make a meaningful financial difference. With 54% of Canadian US property owners considering selling as of August 2025 (Royal LePage survey, n=2,500), understanding FIRPTA is no longer a niche concern. It is a live financial issue for hundreds of thousands of Canadians right now.

FIRPTA applies to all "US real property interests" — residential homes, condos, raw land, and commercial properties — owned by foreign persons, which includes Canadian citizens and permanent residents who are not US tax residents (green card holders or substantial presence test qualifiers). If you are a typical Canadian snowbird who spends fewer than 183 days per year in the US, you are a foreign person for FIRPTA purposes.

The 15% Withholding: How It Works at Closing

The mechanics of FIRPTA withholding are embedded in the US real estate closing process. When you accept an offer, your listing agent and the title company or closing attorney will know — or should know — that you are a foreign seller and that FIRPTA applies. Here is exactly what happens:

1. Seller certifies foreign status (or does not). You will sign a FIRPTA affidavit confirming you are a foreign person. If you falsely claim to be a US person to avoid withholding, you are committing federal fraud — the consequences are far worse than FIRPTA itself.
2. Buyer becomes the withholding agent. Under IRC §1445, the buyer is legally responsible for withholding. In practice, the title company or closing attorney handles it on the buyer's behalf. The buyer does not keep the money — they remit it directly to the IRS.
3. 15% of gross proceeds is withheld at closing. If you are selling for $400,000, $60,000 is set aside in escrow. At closing, you receive $340,000 (plus any remaining deposit from the buyer, less other closing costs). The $60,000 is not paid to you — it goes to the IRS.
4. Buyer files Form 8288 and 8288-A within 20 days of closing. This is the withholding remittance form. You receive a copy of Form 8288-A, which you will attach to your eventual Form 1040NR as proof that withholding occurred. Keep this document — it is the paper trail for your refund.

There is no opt-out from FIRPTA withholding at closing unless you have obtained a withholding certificate in advance (discussed in Section 3) or a specific statutory exemption applies. If your buyer's agent or title company attempts to close a foreign-seller transaction without withholding, they are creating serious IRS exposure — for themselves, not just for you.

Can You Reduce or Avoid FIRPTA Withholding?

Yes — two primary mechanisms exist to reduce or eliminate FIRPTA withholding, and both require advance action before or immediately at closing.

The $300,000 Residence Exemption

Under IRC §1445(b)(5), if the sale price is $300,000 or less AND the buyer (or a member of the buyer's family) signs a certificate stating they intend to use the property as a principal residence for at least two of the first five years after closing, FIRPTA withholding drops to 0%. The buyer must sign this certificate in writing — it is not automatic.

A related provision reduces withholding to 10% (not 15%) when the sale price is $300,001–$1,000,000 AND the buyer signs the same principal-residence certificate. For most Canadian snowbirds selling Florida properties in the $300K–$500K range, this 10% vs. 15% distinction is material: on a $400,000 sale, it is the difference between $40,000 and $60,000 withheld.

Important: this exemption is buyer-driven, not seller-driven. The buyer must be willing to sign the residence certificate. An investor buyer, a corporate buyer, or any buyer who does not intend to personally use the property as a primary home cannot sign the certificate, and the full 15% withholding applies regardless of sale price.

Withholding Certificate via Form 8288-B

If the $300K exemption does not apply (your property is over $300,000, or your buyer is an investor), you can apply to the IRS for a withholding certificate before closing via Form 8288-B. A withholding certificate allows you to have the FIRPTA withholding reduced or eliminated based on your actual expected tax liability rather than the 15% gross calculation.

For example: if you are selling for $400,000, your adjusted cost basis is $350,000, and your actual US capital gains tax is $7,500 (15% × $50,000 gain), you can apply for a withholding certificate reducing the withholding from $60,000 to $7,500. The IRS is supposed to process 8288-B applications within 90 days — which is why this strategy requires you to start the process as early as possible after accepting an offer.

If closing occurs before the IRS approves the certificate, the full 15% must still be withheld (held in escrow by the closing agent) until approval arrives. A cross-border CPA who is experienced with FIRPTA can prepare the 8288-B application and monitor IRS processing to maximize the chance of pre-closing approval.

Sellers who are selling at a loss — where the actual US tax liability is $0 — should especially prioritize the withholding certificate. There is no benefit to having $60,000 withheld and then waiting a year to get it back when the IRS could have approved $0 withholding from the start.

Getting Your ITIN (IRS Individual Taxpayer ID)

To file Form 1040NR (your US non-resident income tax return) and receive your FIRPTA refund, you need an Individual Taxpayer Identification Number (ITIN) from the IRS. An ITIN is a 9-digit number issued specifically for people who need to interact with the US tax system but are not eligible for a Social Security Number.

You apply for an ITIN using Form W-7 (Application for IRS Individual Taxpayer Identification Number). Supporting documents required include a valid passport or government-issued photo ID, documentation of your foreign status, and a completed W-7 form. Processing time is 7–11 weeks when mailed directly to the IRS, or faster if you use an IRS-authorized Certifying Acceptance Agent (CAA) — a cross-border CPA or tax professional certified to process ITIN applications on your behalf without requiring original documents.

If you have previously received rental income from your US property and filed US returns in the past, you already have an ITIN. Check your prior returns or contact your cross-border CPA to confirm. Do not apply for a second ITIN — duplicate applications will delay everything.

Timeline advice: apply for your ITIN as soon as you decide to sell your US property — well before you list. There is no cost to the application, and having your ITIN in hand before closing eliminates a downstream delay in the refund process. If you list, accept an offer, and then realize you need an ITIN, you are adding 7–11 weeks to your refund timeline for no reason.

Recovering the Excess: Filing Form 1040NR

Form 1040NR is the US Non-Resident Alien Income Tax Return. This is the form on which Canadians report their US property sale, calculate their actual US capital gains tax, apply the FIRPTA withholding as a credit, and claim any refund of excess withholding.

The filing deadline for Form 1040NR when you have US-source income subject to withholding (which FIRPTA-withheld proceeds are) is April 15 of the year following the sale, with an automatic extension to June 15 available and a further extension to October 15 with Form 4868. For a sale that closes in November, you would typically file the 1040NR the following April, though the refund clock doesn't start until the IRS receives and processes the return.

On the 1040NR, you report:

• Gross sale proceeds (as reported on Form 8288-A)
• Your adjusted cost basis (purchase price + closing costs + capital improvements)
• Net capital gain (proceeds minus basis)
• US capital gains tax at 0%, 15%, or 20% depending on income level and holding period
• FIRPTA withholding already remitted (from Form 8288-A)
• Net refund due (withholding minus actual tax)

After filing, IRS processing of non-resident returns takes approximately 4–6 months. The refund is issued by cheque (mailed to your Canadian address) or by international wire if you arrange it. The IRS does not pay interest on FIRPTA refunds unless processing takes more than 45 days past the filing deadline — which it routinely does for non-resident returns. Budget for the refund to arrive 8–12 months after closing, and do not count on it in your short-term cash flow planning.

The Canada-US Tax Treaty: Preventing Double Taxation

The Canada-United States Convention With Respect to Taxes on Income and Capital — commonly called the Canada-US Tax Treaty — has been in force since 1980 and comprehensively covers the treatment of capital gains on real property. Article XIII is the operative provision for property sales.

Under the treaty, capital gains from the alienation of real property situated in the US are taxable in the US. Canada also taxes its residents on worldwide income, including capital gains from foreign property. Without the treaty credit mechanism, Canadians would owe tax to both governments on the same gain.

The treaty coordinates this by allowing the Canadian resident to claim a foreign tax credit for US federal income tax paid on the same gain. The credit is claimed on Form T2209 (Federal Foreign Tax Credits) and reduces your Canadian tax liability dollar-for-dollar up to the Canadian tax attributable to that foreign income.

The critical word is "claimed" — the treaty credit is not automatic. You must: (a) file Form 1040NR in the US and determine your actual US tax paid, (b) report the same gain on your Canadian T1 return, and (c) attach Form T2209 claiming the credit. If you file only in Canada and do not file in the US at all, you cannot claim the treaty credit, and you will pay full Canadian capital gains tax on the gain with no offset for the FIRPTA withholding sitting at the IRS. Both returns must be filed correctly and in the right sequence.

One nuance: the T2209 credit is limited to the lesser of the foreign tax paid and the Canadian tax on the same foreign income. If your US tax rate is higher than your marginal Canadian rate on that income, you cannot fully offset the excess US tax against other Canadian income — it is lost. Conversely, if your Canadian tax on the gain is higher than the US tax paid, you will owe the difference to CRA after claiming the T2209 credit.

Reporting the Sale to CRA: Schedule 3 and T2209

In the tax year that your US property sale closes, you must report the disposition on your Canadian T1 General income tax return. The relevant schedules are:

• Schedule 3 — Capital Gains (and Losses): Lists the property disposition, proceeds, adjusted cost base (ACB), and net capital gain. The proceeds and ACB are expressed in Canadian dollars — convert from USD using the Bank of Canada exchange rate on the transaction date. Currency appreciation since purchase will show up as an additional gain beyond what you perceived in USD terms.
• Form T2209 — Federal Foreign Tax Credits: Claims the credit for US federal income tax paid on the sale. The amount to enter is your actual US tax from Form 1040NR — not the FIRPTA withholding amount.
• Form T1135 — Foreign Income Verification Statement: If you owned the US property for the full calendar year, you were likely required to file T1135 in prior years (if cost base exceeded CAD $100,000). In the year of sale, you still report the property on T1135 if it was held at any point in that tax year.

The CRA filing deadline is April 30 of the year following the sale. However, filing your T1 before your US 1040NR is finalized creates a timing problem: you need the actual US tax figure for the T2209. One solution is to file your Canadian return on time with an estimate (using your expected US tax) and then file a T1 adjustment (T1-ADJ) once your 1040NR is processed. Work with a cross-border CPA to sequence these filings correctly.

See our full guide to Canadian taxes on foreign property and the T1135 compliance guide for deeper coverage of the CRA reporting obligations on your US property.

Worked Example: The $400K Florida Condo Sale

The following example walks through a complete FIRPTA scenario for a typical Canadian snowbird. All figures are approximate and illustrative — your actual tax situation will vary based on purchase price, holding period, income, and currency rates.

The key takeaway from this example: the total tax burden is meaningful but manageable — roughly 24% on the actual US gain. The cash flow disruption from FIRPTA ($60,000 withheld for 6–12 months) is the real operational challenge, not the tax itself. Plan accordingly: do not commit the FIRPTA-withheld amount to your next purchase or other obligations until the refund arrives.

Timeline: From Listing to Final Tax Recovery

Understanding the full FIRPTA timeline helps you plan cash flow for any subsequent purchase — whether in Mexico, Costa Rica, or elsewhere.

• Before listing: Apply for ITIN (Form W-7) if you don't have one — 7–11 weeks. Engage a cross-border CPA. Gather original purchase documents, capital improvement records, and closing cost receipts for ACB calculation.
• At listing: If you expect to sell above $300,000 and your buyer will likely not be a primary residence user, instruct your CPA to begin a Form 8288-B withholding certificate application once you have an accepted offer. If sale is under $300K, ensure buyer's agent knows about the residence-use exemption.
• Month 0 — Closing: 15% (or 10%) withheld. Buyer files Form 8288 and 8288-A within 20 days. You receive Form 8288-A copy. You receive 85% (or 90%) of gross proceeds less selling costs.
• Months 1–3: Assemble US tax documents. If you received any rental income in the sale year, gather those records. Your CPA prepares Form 1040NR.
• Month 3–4 — File Form 1040NR: File before April 15 (or by June 15 automatic extension). FIRPTA withholding shown as credit. Net refund claimed.
• Month 4 — File Canadian T1: Report Schedule 3 disposition. File T2209 with estimated US tax. May need to file T1-ADJ later once US refund confirms actual US tax paid.
• Months 4–12 — IRS Processing: Non-resident returns take 4–6 months to process. FIRPTA refund issued by cheque or wire. Interest is paid only if IRS exceeds 45 days past filing deadline.
• Month 9–15 — Final Resolution: US refund received. If T2209 estimate differed from actual, file T1-ADJ with CRA. Pay any remaining CRA balance. Full cycle complete.

If you are using the US sale proceeds to fund a purchase in Mexico or another country, plan your Mexico purchase financing around the 85% of gross proceeds you receive at closing — not the 100%. The FIRPTA refund is a bonus that arrives later. See our foreign property financing guide for strategies to bridge this gap.

Common FIRPTA Mistakes Canadians Make

1. Expecting to receive full proceeds at closing. The most common shock. Budget your post-sale cash flow around 85% of gross proceeds (or 90% if the $300K–$1M buyer-residency rate applies). The remaining 10–15% is the IRS's for a year.
2. Not having an ITIN ready. If you realize you need an ITIN after closing, you've added 7–11 weeks to your refund timeline unnecessarily. Apply before you list.
3. Assuming the buyer's agent or title company handles everything. They handle the withholding remittance. They do not file your 1040NR, handle your T2209, or sequence your Canadian and US returns. You need your own cross-border CPA.
4. Missing the withholding certificate window. Form 8288-B must be filed and ideally approved before closing. You cannot retroactively reduce withholding after the IRS has already received the 15%. If you're selling at a loss or with a very small gain, the withholding certificate can save you the 6–12 month refund wait entirely.
5. Using the FIRPTA withholding amount as your T2209 credit. The T2209 credit is your actual US tax paid, not the withholding amount. If $60,000 was withheld but your US tax was $10,950, you claim $10,950 on the T2209 — not $60,000.
6. Filing only in Canada and skipping the US return. Without a Form 1040NR, the FIRPTA withholding sits at the IRS indefinitely — there is no automatic refund process. The IRS will not proactively mail you a cheque. You must file to claim your refund.
7. Calculating the Canadian capital gain in USD. Schedule 3 is filed in CAD. You must convert both proceeds and ACB to CAD using Bank of Canada rates. Many Canadians are surprised by a larger-than-expected Canadian gain because the CAD/USD rate was more favorable at purchase (0.80+) than at sale (0.70), artificially inflating the CAD gain relative to the USD gain.
8. Not keeping capital improvement records. Capital improvements (renovations, new appliances, structural upgrades) are added to your adjusted cost basis, reducing your taxable gain. Without receipts and records, the IRS and CRA have no basis to accept these deductions.