Selling a Canadian Home Before or After Moving to the US, Explained
Because Canadian real estate is explicitly exempt from Canada's departure tax when you move to the US (see Canada's Departure Tax, Explained), many Canadians assume there's no rush to sell their home before leaving. In reality, crossing the border before closing on the sale of your Canadian home changes the tax math in three big ways: you stop accruing Principal Residence Exemption years, you trigger Section 116 non-resident withholding paperwork at closing, and you bring the sale (and your Canadian mortgage payoff) onto your US tax return.
1. The CRA Principal Residence Exemption and the "+1 year" rule
Under Income Tax Act s.40(2)(b), the fraction of your home's capital gain that is sheltered by the Principal Residence Exemption (PRE) is:
Exempt fraction = (1 + Number of years designated as principal residence while resident in Canada) ÷ Total years of ownership
Two statutory rules in that formula matter when you move to the US:
- You can only designate years in which you were resident in Canada: Every full calendar year you hold the home after ceasing Canadian residency adds 1 to the denominator ("Total years of ownership") without adding anything to the numerator.
- The "+1" bonus year gives you a one-year grace window: Provided you were resident in Canada during the year you originally acquired the property, the "+1" in the numerator means that if you leave Canada in Year X and sell the home in Year X+1 (the calendar year immediately following your departure year), the numerator still equals the denominator and 100% of the gain can still be sheltered in Canada, even though you were a non-resident in the year of sale. Wait until Year X+2 or later, however, and a pro-rata slice of the entire lifetime gain becomes taxable in Canada.
2. Section 116 Clearance Certificates (Form T2062) and the 25% holdback
If you sell Canadian real estate after the date you become a non-resident of Canada, Income Tax Act Section 116 applies to the closing, even if 100% of your gain is ultimately exempt under the Principal Residence Exemption! Under Section 116:
- The buyer (through their real estate lawyer) is personally liable to the CRA unless they withhold 25% of the gross sale price (not the net gain, and not your equity after the mortgage: 25% of the entire purchase price) until the CRA issues a Certificate of Compliance (Form T2068).
- To get that certificate, you must file Form T2062 (Request by a Non-Resident of Canada for a Certificate of Compliance Related to the Disposition of Taxable Canadian Property) along with Form T2091(IND) (claiming the Principal Residence Exemption for your resident years) either before closing or within 10 days after the actual closing date (missing the 10-day deadline carries a $25/day penalty up to $2,500).
- Once the CRA processes Form T2062 (which routinely takes 3 to 6 months, during which your real estate lawyer holds the 25% in trust), the CRA requires remittance of only 25% of the net uncovered capital gain (which is $0 if the PRE plus the "+1" rule covers 100% of the gain), and the lawyer releases the held-back proceeds to you. You then file a Section 116 Canadian non-resident tax return the following April to settle the final tax and recover any overpayment.
3. The US side: IRC Section 121 ($250k / $500k exclusion) and the FX mortgage trap
If you sell your Canadian home before you become a US tax resident, the IRS has no jurisdiction over the sale at all. Once you sell after becoming a US tax resident (or if you are already a US citizen or Green Card holder), the sale must be reported on your US tax return in USD:
- IRC Section 121 exclusion: If you owned and lived in the Canadian home as your main home for at least 2 of the 5 years before the sale, you can exclude up to US$250,000 of gain (single) or US$500,000 (married filing jointly) from US federal tax. Unlike Canada's unlimited PRE, any gain above $250k/$500k (calculated by converting your original purchase price into USD at the historical exchange rate on the day you bought the home, and the sale price into USD at the exchange rate on the day you sold) is taxed as a long-term capital gain by the IRS.
- Treaty Article XIII(6) step-up election: For Canadian citizens who are not US citizens, if the home had a large pre-move gain, Article XIII(6) of the Canada-US Tax Treaty contains complex transitional and departure-coordination rules that a cross-border CPA should check if your USD gain exceeds the Section 121 cap.
- The foreign-currency mortgage payoff trap (IRC §988): If the Canadian dollar weakened between the day you took out your Canadian mortgage and the day you paid it off at closing (for example, you borrowed CA$600,000 when 1 CAD = 0.80 USD, or US$480,000, and paid off CA$600,000 when 1 CAD = 0.72 USD, or US$432,000), the IRS treats that US$48,000 reduction in the USD cost of repaying your debt as a taxable Section 988 ordinary foreign-exchange gain, which cannot be offset by the IRC §121 home-sale exclusion!
Section 116 compliance & closing timeline
File Form T2062 (and T2062A if rental/depreciable property was involved) immediately upon removing conditions, or at latest within 10 days after closing (ITA s.116(3); $25/day late penalty up to $2,500).
If the CRA Certificate of Compliance (Form T2068) has not arrived by closing, the buyer's notary/lawyer holds 25% of gross sale price (50% on depreciable building portion) in escrow pending the CRA comfort letter.
Once the CRA issues Form T2068 recognizing your Principal Residence Exemption (PRE) years + 1, the lawyer remits 25% of only the non-exempt gain and wires the remaining holdback to you.
File a Canadian non-resident T1 return (Schedule 3 + T2091) to reconcile actual graduated tax against the 25% certificate payment and obtain your refund, then claim final Canadian tax on US Form 1116.
Not tax, legal, or immigration advice: Section 116 holdbacks, subsection 45(2) rental elections, and IRC §988 mortgage calculations require coordination with both your Canadian real estate lawyer and a cross-border CPA before listing. Estimate your departure-year tax on your other assets with the Departure Tax Estimator and review your residency split date in The Canada-US Tax Treaty Tie-Breaker Rules.