Selling Your Canadian Home After Moving to the US: the Principal Residence Exemption, Section 116, and the 25% the Buyer Holds Back

Timing the home sale against the departure date changes the process more than the tax — but it changes both. Selling while still a Canadian resident is the clean case: the principal residence exemption shelters the gain for every year the home qualified (plus the one-year bonus in the formula), the sale is reported on the T1 with the designation, and nothing is withheld from anyone. Selling after becoming a non-resident keeps most of the exemption — the formula still counts your resident years, and the plus-one still helps — but wraps the transaction in the non-resident machinery: the buyer of Canadian real property from a non-resident must withhold 25% of the gross price unless the vendor delivers a section 116 certificate of compliance, which the vendor obtains by notifying the CRA, computing the gain, and paying tax on account (or showing the exemption covers it). The certificate takes months; until it arrives, the 25% sits in trust, which is the practical pain — a C$1.2 million sale parks C$300,000 with the buyer's lawyer while the CRA processes. Meanwhile the US has entered: a US-resident seller reports the sale on the 1040, where section 121's exclusion may cover US$250,000/US$500,000 of gain if the two-of-five-year use test still reaches back to the Canadian occupancy, and gain beyond it is US-taxable with a credit for Canadian tax actually paid. Post-departure appreciation is the slice both countries can see — one more argument for selling sooner.

Key takeaways

• Sell before departure (the default advice when the plan is to sell at all): principal residence exemption applies fully, no withholding, no certificate, no US involvement (pre-US-residency), and the proceeds cross as cash.
• Sell after — the exemption survives in proportion: the formula exempts (resident-qualifying years + 1) over years owned; departure doesn't erase the history, it stops accruing it. Post-departure years add taxable proportion — and post-departure appreciation is real gain.
• Section 116 applies to every non-resident sale of Canadian real property: vendor notifies the CRA (T2062) within 10 days of closing, pays 25% of the gain (not the price) on account or demonstrates the exemption, and receives the certificate; without it, the buyer withholds 25% of the gross price. Budget months, not weeks, and structure the closing with the holdback documented.
• The US side: a US resident's sale of the former Canadian home can still fit section 121 if the sale closes within the two-of-five-year window from moving out — the same three-year fuse Americans face, running from the Canadian departure; beyond it, the gain is US-taxable with foreign tax credits for the Canadian tax on the non-exempt slice.
• Renting it first changes the file: the home converts to income property (a deemed disposition at change of use, with an election available to defer it), section 216/NR6 machinery applies to the rent, depreciation questions arise on the US side, and the eventual sale layers recapture on the process above.
• Currency counts twice: the Canadian computation runs in CAD; the US computation in USD at the respective dates — an FX move can create US gain on a flat CAD price, and the mortgage payoff has its own US FX calculation.

The decision most movers actually face

Not "how do I do section 116" but "do I sell now or keep it." Selling inside the departure window wins on process and usually on tax; keeping it converts the home into a cross-border rental business with a harder exit. The keep case needs the rental math to clear the same bar it would for any investment property — after two returns, withholding administration, and a section 116 exit — not the sentimental bar of a house the family isn't ready to release.

Worked example

A Burnaby couple moves to Seattle June 1, listing their home (bought 2012 for C$650,000, worth C$1.55 million). Scenario A — sold May 15, before departure: principal residence exemption designates all years; C$900,000 gain fully exempt; T1 reports the designation; no withholding, no US claim (not yet US residents). Scenario B — sold the following March as Washington residents for C$1.6 million: the exemption formula covers their ownership years through departure plus one — nearly all of the gain — leaving a small taxable proportion plus the post-departure appreciation; the T2062 files within 10 days of closing with tax on the small taxable slice; until the certificate arrives, the buyer's lawyer holds 25% of C$1.6 million (C$400,000) — released months later; on the 1040, the sale sits inside the section 121 window (moved out under three years), the exclusion covers the modest USD-measured gain, and Washington has no income tax. Same house, similar tax — and Scenario B's real cost was the C$400,000 parked in trust and a winter of process the May sale never met.

Official sources

The CRA explains that when a non-resident disposes of taxable Canadian property such as Canadian real estate, the non-resident must notify the CRA and obtain a certificate of compliance under section 116, and that if no certificate is obtained, the purchaser must withhold and remit a percentage of the purchase price. — Canada Revenue Agency, Disposing of or acquiring certain Canadian property, https://www.canada.ca/en/revenue-agency/services/tax/international-non-residents/information-been-moved/disposing-acquiring-certain-canadian-property.html

The IRS explains that a taxpayer may exclude up to $250,000 of gain on the sale of a main home ($500,000 for certain joint filers) if they owned and used the home as their main home for at least two of the five years before the sale. — Internal Revenue Service, Topic No. 701, Sale of Your Home, https://www.irs.gov/taxtopics/tc701

Practitioner note

Home-sale timing is the rare decision where the tax answer and the life answer usually agree: sell inside the departure window and the exemption plus a clean closing do everything. When clients sell after anyway, our job is expectation management — the 25% holdback is not a tax, it is a queue — and calendar discipline: the T2062's 10-day clock and the US 121 window's three-year fuse are the two dates that turn a fine outcome into an expensive one when missed.

See also: Browse every cross-border tax topic guide, organized by situation.

Next step

Fairlight prepares the home sale plan — before/after departure modeling, the principal residence designation, the section 116 clearance process and holdback logistics, and the US 121 window check. See cross-border pricing or book a call.