FIRPTA Withholding: Complete Guide for Canadian Sellers of US Property (2026)
The single largest cash-flow event for any Canadian selling US rental property is not the capital gains tax — it is FIRPTA withholding. At closing, the buyer withholds 15% of the gross sale price and remits it to the IRS. Not 15% of the gain. 15% of the entire sale price, including the portion that just returns your original cost.
On a $500,000 condo sale, that is $75,000 held back at closing for the next 12-18 months until your final 1040-NR is processed and the IRS issues the refund of whatever was over-withheld.
This guide covers what FIRPTA is, who it applies to, the exemptions, the Form 8288-B Withholding Certificate that reduces the amount held, the interaction with Canadian capital gains tax, and the timeline you need to plan around to avoid cash-flow surprises.
What Is FIRPTA?
FIRPTA — the Foreign Investment in Real Property Tax Act — is a US federal law enacted in 1980 to ensure that non-US sellers of US real property actually pay the US tax owed on the sale. Before FIRPTA, foreign sellers could close the sale, take the proceeds offshore, and never file a 1040-NR. The IRS had no enforcement mechanism.
FIRPTA fixed this by making the buyer (technically the buyer's closing agent or settlement agent) the withholding agent: a percentage of the gross sale price is held back at closing and remitted directly to the IRS. The non-US seller then files a 1040-NR to compute actual tax owed and claims the excess withholding as a refund.
This is not a tax — it is a withholding against your final tax. The actual capital gains tax on the sale is usually a fraction of the FIRPTA amount, and the difference becomes a refund. But the cash sits with the IRS for 12-18 months in the meantime, which can affect what you can do with sale proceeds.
Who Does FIRPTA Apply To?
FIRPTA applies when:
- The seller is a non-US person — a Canadian resident, a non-resident alien for US tax purposes, or a foreign corporation/trust
- The asset sold is a US real property interest — physical real estate located in the US, or stock in certain US real property holding corporations
For our purposes — Canadian individuals selling US rental property — both conditions are met. FIRPTA applies.
If you are a US citizen or green card holder living in Canada, you are technically a US person for tax purposes and FIRPTA does not apply. You file your US capital gains via your regular 1040 (not 1040-NR) and handle the tax through your normal IRS filing process.
If you own through a US LLC — common advice that often backfires for Canadian landlords — the FIRPTA mechanics depend on whether the LLC is taxed as a corporation or a disregarded entity. A disregarded LLC owned by a Canadian individual triggers FIRPTA the same as direct ownership. Get specialized advice; the LLC structure rarely helps Canadians.
The 15% Withholding Rate
The current FIRPTA withholding rate is 15% of the gross sale price.
This is the standard rate for most Canadian sellers of US rental property. The rate stepped up from 10% to 15% as part of the PATH Act (2015), and 15% has been the headline number ever since.
Reduced rates exist in specific cases (the $300,000 / $1M buyer-occupant rules — see exemptions below), but if your buyer is an investor, a corporation, or anyone not personally moving in, the full 15% applies.
What “gross sale price” means. The contract price. Not the net after closing costs. Not the gain. Not the price minus your remaining mortgage. The full price on the purchase-and-sale agreement.
Who actually does the withholding.The buyer is technically responsible, but in practice the buyer's closing agent (title company, escrow company, or settlement attorney) calculates and remits the withholding from the sale proceeds at closing. You sign the closing statement showing the withholding was deducted from what you receive.
Example: $500,000 Condo = $75,000 Withheld
Concrete numbers make this clearest. A Canadian resident sells a Phoenix condo:
- Sale price: $500,000 USD
- Outstanding mortgage paid off at closing: $250,000
- Closing costs (realtor commission, title, fees): $35,000
- FIRPTA withholding: 15% × $500,000 = $75,000
- Net cash to seller at closing: $500,000 − $250,000 − $35,000 − $75,000 = $140,000
What the seller's actual US tax on the gain looks like:
- Original purchase price (basis): $300,000
- Capital gain: $500,000 − $300,000 = $200,000 USD
- At US long-term capital gains rates for non-residents (typically 15% on most of the gain): ~$30,000 actual tax
- Refund from IRS at 1040-NR processing: $75,000 − $30,000 = $45,000
So $45,000 of the $75,000 withheld is technically yours and comes back as a refund — but only after the 1040-NR is filed and processed, which takes 12-18 months from sale. Try the FIRPTA Calculator to model your specific scenario.
How to Get It Back: File 1040-NR
Steps to recover over-withheld FIRPTA:
- At closing— the buyer's agent withholds 15% and remits to the IRS using Form 8288 (the FIRPTA remittance form). You receive Copy B of Form 8288-A as your receipt for the withholding.
- By March-April of the year following sale — file your Form 1040-NR for the year of sale. Report the sale on Schedule D with capital gain calculation, attach Form 8288-A as proof of withholding, and compute actual capital gains tax owed.
- Claim the excess as a refund on the 1040-NR. The IRS processes the return and issues a refund check (or direct deposit if you have a US bank account) for whatever was over-withheld.
Timeline expectation: from sale to refund in hand is typically 12-18 months, driven by the late spring 1040-NR filing deadline plus IRS processing time (especially for non-resident returns, which are slower than domestic).
What if you owe more than was withheld? If your actual capital gains tax exceeds the 15% withheld (rare for residential rental but possible for high-basis or short-hold scenarios), the balance is due with the 1040-NR.
Withholding Certificate: Form 8288-B
The biggest cash-flow improvement available to Canadian sellers is the Form 8288-B Withholding Certificate. This is an IRS pre-approval that reduces the 15% withholding to your actual estimated tax on the gain — issued before closing.
How it works. You (or your cross-border CPA) file Form 8288-B with the IRS before closing. The form includes your purchase price (basis), the contract sale price, the estimated gain, and the actual estimated tax based on capital gains rates. The IRS reviews and issues a certificate authorizing reduced withholding — typically matching your estimated tax to the dollar.
The deadline that matters: 90 days. The IRS processing time for Form 8288-B is officially 90 days from filing to certificate issuance. Apply as soon as you have a signed listing agreement — not after the offer is accepted — to give yourself buffer.
What the certificate looks like in practice. Same $500,000 sale, $300,000 basis, $30,000 estimated tax. With an approved 8288-B, the closing agent withholds $30,000 instead of $75,000. $45,000 stays in your pocket at closing instead of with the IRS for 12+ months.
Application cost. Most cross-border CPAs charge $500-1,500 to prepare and file Form 8288-B. For a typical sale, the cash-flow improvement vastly exceeds the preparation fee.
Exemptions: $300,000 Buyer-Occupant Rule
Two specific exemptions can reduce or eliminate FIRPTA withholding without needing Form 8288-B:
- Sale price $300,000 or less + buyer-occupant certification = 0% withholding. If the sale price is $300,000 or less AND the buyer certifies they will personally occupy the property as a residence for at least 50% of the days it is used over each of the next two years, FIRPTA withholding is fully waived.
- Sale price $300,001 to $1,000,000 + buyer-occupant certification = 10% withholding. Same buyer-occupant requirement, reduced rate (10% instead of 15%).
- Sale price over $1,000,000 = 15% regardless of buyer use. No reduction; full FIRPTA applies.
The buyer-occupant certification is a one-page statement (no specific form) signed by the buyer affirming the occupancy intent. The closing agent typically prepares it during the closing process.
Practical reality: the $300,000 threshold is well below typical Florida and Arizona Canadian-owned property values, so the full exemption is rare. The 10% tier ($300k-$1M with buyer-occupant) is more common and still saves 5 percentage points on the gross price — a $35,000 saving on a $700,000 sale.
If the buyer is an investor, a corporation, an LLC, or simply not signing the certification, default 15% applies.
FIRPTA and Canadian Capital Gains Tax
The US capital gains tax via 1040-NR is not the end of the story. Your Canadian return also taxes the same capital gain — on the same property, in the same year, in CAD.
How it stacks on the Canadian side:
- Report the property disposition on Schedule 3 of your T1 in the year of sale
- Capital gain = sale price minus adjusted cost base (in CAD using the Bank of Canada rate for the year of sale)
- 50% inclusion rate (for individual landlords, current rules) — half the gain is added to your taxable income
- Taxed at your marginal Canadian rate (combined federal + provincial)
- Foreign Tax Credit for the US tax paid (the actual amount, not the FIRPTA withheld) — claimed on line 40500 of your T1
The order issue: the Canadian return is usually due before the US 1040-NR processing produces the final US tax number. Most cross-border CPAs file the 1040-NR first (often early — March or early April), use the actual US tax to populate the Canadian foreign tax credit by April 30, and avoid filing extensions on the T1.
For the full T776/T1 mechanics on the Canadian side, see our T776 Complete Guide.
Timeline and Deadlines
What happens when, around a typical FIRPTA sale:
- ~90 days before closing — file Form 8288-B if pursuing the Withholding Certificate
- ~60 days before closing — IRS issues certificate (target window)
- Closing day— buyer's closing agent calculates withholding (15% default, or reduced per Form 8288-B), remits via Form 8288, and provides Form 8288-A copies to you
- 20 days after closing— buyer's agent must remit the withholding to the IRS (this is their deadline, not yours, but if they miss it, you get pulled into the dispute)
- Following calendar year — March/April — file 1040-NR for the year of sale, report capital gain on Schedule D, attach Form 8288-A, claim refund of over-withheld FIRPTA
- Same following year — April 30 — file Canadian T1 with Schedule 3 showing the disposition; claim foreign tax credit for US tax actually paid
- ~6-12 months after 1040-NR filing — IRS processes refund and issues payment
The biggest planning lesson: build the FIRPTA cash-flow gap into your sale plan. Whether 15% of gross or a reduced rate via 8288-B, a substantial chunk of your sale proceeds is tied up with the IRS for over a year. Do not commit those funds to other investments or property purchases before the refund arrives.