Cross-Border Gift Tax: Canada and US Rules

Canada does not have a gift tax. The US does. This asymmetry creates a planning opportunity for some cross-border families and a trap for others. A Canadian resident who gifts property to a family member in the US faces no Canadian gift tax but may trigger a deemed disposition (capital gains tax on the difference between the property’s cost and its fair market value at the time of the gift). A US citizen or resident who makes a gift faces the US gift tax regime, with an annual exclusion ($19,000 per recipient for 2025) and a lifetime exemption ($13.99 million for 2025, scheduled to drop to approximately $7 million after 2025 unless extended). When the gift crosses the border, the interaction of these two systems determines who owes what.

How does Canada treat gifts?

Canada does not have a gift tax. You can give cash, property, or investments to anyone without triggering a tax on the gift itself. However, Canada treats certain gifts as triggering events for other tax purposes:

Deemed disposition on gifts of property. When you give capital property (stocks, real estate, a business interest) to anyone other than your spouse, ITA 69(1)(b) treats the gift as a sale at fair market value. The donor realizes a capital gain equal to FMV minus adjusted cost base (ACB). The 50% inclusion rate applies. The recipient’s ACB is the FMV at the time of the gift.

• Spousal exception. Gifts to a spouse (or common-law partner) do not trigger a deemed disposition. The property transfers at cost under ITA 73(1), and the spouse inherits the donor’s ACB. However, the attribution rules under ITA 74.1 and 74.2 attribute income and capital gains from the gifted property back to the donor. See the income splitting guide for the attribution rules.
• Gifts to children. A gift to an adult child triggers the deemed disposition (capital gains to the donor at FMV), but the attribution rules do not apply to adult children for capital gains (only for minors). Income from property gifted to a minor is attributed back to the donor under ITA 74.1(2).
• Cash gifts. A gift of cash has no capital gains component (cost = FMV). No deemed disposition applies.

How does the US treat gifts?

The US has a comprehensive gift tax regime under IRC 2501-2524. The gift tax is paid by the donor, not the recipient.

Annual exclusion. The first $19,000 per recipient per year (2025, indexed) is excluded from the gift tax. A married couple can split gifts, giving $38,000 per recipient per year without reporting. The annual exclusion applies to present-interest gifts (the recipient can use or enjoy the gift immediately).

Lifetime exemption. Gifts above the annual exclusion are applied against the donor’s lifetime gift and estate tax exemption ($13.99 million for 2025). No gift tax is actually owed until the cumulative lifetime gifts exceed the exemption. In practice, very few individuals exhaust the exemption.

The sunset. The $13.99 million exemption was set by the Tax Cuts and Jobs Act (TCJA) and is scheduled to revert to approximately $7 million (indexed) after December 31, 2025, unless Congress extends it. For cross-border families with substantial assets, the pre-sunset period may be the last window for large gifts under the higher exemption.

Form 709. Any gift above the annual exclusion to a single recipient requires the donor to file Form 709 (United States Gift Tax Return). The form tracks the cumulative use of the lifetime exemption. No tax is owed if the exemption is not exhausted, but the filing is required.

Who is subject to US gift tax. US citizens and US residents (domiciliaries, not just those meeting the substantial presence test) are subject to US gift tax on worldwide gifts. Non-resident aliens are subject to US gift tax only on gifts of tangible property located in the US (real estate, physical goods), not on intangible property (stocks, bonds, cash) or property located outside the US.

What happens when a US citizen in Canada makes a gift?

A US citizen living in Canada is subject to both systems:

Canadian side. If the gift is appreciated capital property, the donor recognizes a capital gain on the deemed disposition. Cash gifts have no Canadian tax consequence. Gifts to a spouse transfer at cost (no deemed disposition), subject to attribution rules.

US side. The donor must report gifts above the annual exclusion on Form 709. The lifetime exemption absorbs the gift, so no US gift tax is owed unless cumulative gifts exceed $13.99 million. Cash gifts and property gifts are both reportable.

The two systems apply independently. A US citizen in Canada who gifts $500,000 of publicly traded shares (ACB of $200,000, FMV of $500,000) to an adult child in the US:

• Canada: Deemed disposition at FMV. Capital gain of $300,000. At the 50% inclusion rate, $150,000 is included in income. Tax at the marginal rate (approximately $45,000 to $75,000 depending on province and other income).
• US: Gift of $500,000, minus $19,000 annual exclusion = $481,000 applied against the lifetime exemption. No gift tax owed (assuming the exemption is not exhausted). Form 709 required.

The Canadian capital gains tax is not creditable as an FTC against the US gift tax because the US gift tax is a transfer tax, not an income tax. However, the Canadian capital gains tax is creditable against the US income tax on the same gain (if the gain is also recognized on the US return, which it is for a US citizen).

What happens when a Canadian gives a gift to a US person?

A Canadian resident who is not a US citizen or US resident (domiciliary) is generally not subject to US gift tax on gifts of intangible property, regardless of where the recipient lives. This is a significant planning advantage.

• Cash gifts from Canada to a US person. No US gift tax (the donor is a non-resident alien, and cash is intangible). The US recipient must report foreign gifts exceeding $100,000 in aggregate during the year on Form 3520, Part IV. The recipient does not owe US tax on the gift, but the reporting is required, with a penalty of 5% per month (up to 25%) for failure to file.
• Canadian real property. A Canadian resident who gifts Canadian real property to a US person triggers the Canadian deemed disposition (capital gains to the donor). No US gift tax applies (tangible property located outside the US).
• US real property. A Canadian resident who gifts US real property to anyone is subject to US gift tax on the transfer, because the property is tangible property located in the US. The annual exclusion and, for some gift types, the estate/gift treaty credits apply.
• Stock in a US corporation. Shares of stock are generally intangible property. A non-resident alien’s gift of US corporate stock is not subject to US gift tax. This is a specific exception under IRC 2501(a)(2).

How does the treaty affect cross-border gifts?

The Canada-US tax treaty does not contain a comprehensive gift tax provision equivalent to the income tax articles. The estate tax provisions in Article XXIX B apply primarily to estates and bequests, not lifetime gifts. However, a few treaty interactions matter:

• Marital credit. Article XXIX B(3) provides a credit for estate tax on property passing to a surviving spouse, but this applies to estates, not lifetime gifts.
• Prorated unified credit. For a non-US-domiciliary who is subject to US estate or gift tax (e.g., on US real property), Article XXIX B(2) provides a prorated unified credit based on the ratio of US-situated assets to worldwide assets. This can apply to gift tax on US real property transfers.
• No double-tax relief on transfer taxes. The treaty does not provide an FTC mechanism for gift tax the way Article XXIV provides one for income tax. If both countries assess a transfer tax on the same gift (which is unusual given that Canada has no gift tax, but can arise when the Canadian deemed disposition and the US gift tax both apply), there is no treaty mechanism to credit one against the other.

What about the cost basis of gifted property?

The recipient’s cost basis depends on which country they live in and where they will eventually sell the property:

US basis rules for gifted property. Under IRC 1015, the recipient generally takes the donor’s adjusted basis (carryover basis) for purposes of calculating gain, and the lower of the donor’s basis or FMV at the date of the gift for calculating loss. If the donor paid gift tax, a portion of the gift tax increases the recipient’s basis (but only to the extent of the net appreciation).

Canadian basis rules for gifted property. When the donor is deemed to have disposed of the property at FMV (which is the default for gifts to non-spouses), the recipient’s ACB is the FMV at the date of the gift. The recipient starts with a “stepped-up” basis equal to FMV.

The mismatch matters for cross-border gifts. If a US citizen in Canada gifts shares (ACB $100, FMV $500) to a child in the US:

• Canadian side: donor recognizes gain on $400. Recipient’s ACB = $500 for Canadian purposes (but the recipient is in the US and may never file Canadian taxes on this property).
• US side: recipient’s US basis = donor’s US basis (carryover). If the donor’s US basis was $100, the recipient’s US basis is $100. The recipient will pay US tax on the full $400 gain when they sell, even though the Canadian donor already paid Canadian tax on the same gain.

This is not double taxation in the same country, but it is double taxation across countries. The FTC on the US side does not apply because the Canadian tax was paid by a different person (the donor). Planning around this requires either gifting assets with no or minimal appreciation, or timing the gift to take advantage of the lifetime exemption and basis adjustments.

What are the common mistakes?

• Assuming Canada has no tax consequence on gifts. Canada has no gift tax, but the deemed disposition creates capital gains tax on appreciated property. Cash gifts are tax-free; property gifts often are not.
• Not filing Form 709. US citizens must file Form 709 for gifts above the annual exclusion, even when no tax is owed due to the lifetime exemption. The form tracks the exemption balance.
• Not filing Form 3520. US persons who receive foreign gifts exceeding $100,000 must report on Form 3520. The penalty for non-filing is 5% per month, up to 25%.
• Ignoring the basis mismatch. Cross-border gifts create basis discrepancies between the Canadian and US calculations that can result in unexpected tax when the recipient sells the property.
• Gifting US real property without considering gift tax. Non-resident aliens who gift US real property are subject to US gift tax, with limited exemptions.

What should I do next?

Cross-border gifts require coordination of the Canadian deemed-disposition rules, the US gift tax regime, and the basis consequences for the recipient. The optimal approach depends on the type of property, the residency and citizenship of the donor and recipient, and the current and projected value of the assets.

• Are gifts taxable in Canada?, the Canadian domestic rules
• US tax on inheritance or gift from a Canadian parent, the US recipient side
• Income splitting: Canada vs US, attribution rules on spousal gifts
• Cross-border estate planning, the broader estate-planning toolkit
• Inheritance tax in Canada, what Canadian heirs actually pay (deemed disposition, not inheritance tax)
• Deemed disposition at death vs US step-up in basis, the death-time comparison

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.