Buying U.S. stocks as a Canadian resident is straightforward: open an account with any Canadian brokerage, submit an IRS Form W-8BEN during sign-up, transfer Canadian dollars in, convert them to U.S. dollars, and place your order on a U.S.-listed ticker. The trade itself takes seconds. What deserves more attention is what comes after — the 15% withholding on U.S. dividends, the account type you hold the shares in, and a Canadian reporting form that kicks in once your foreign holdings cross $100,000 in cost.
Opening the Account and Filing a W-8BEN
Every Canadian brokerage runs the same identity check at sign-up: government-issued photo ID (passport or provincial driver’s license), your Social Insurance Number, and proof of a Canadian address such as a recent utility bill or bank statement. The digital onboarding flow handles all of this in a few minutes.
The document that actually matters for U.S. investing is IRS Form W-8BEN. Any non-U.S. person receiving income from American sources has to file one with their withholding agent, and in practice your brokerage collects it during account setup.1Internal Revenue Service. About Form W-8 BEN The form confirms you are not a U.S. person and lets you claim the reduced dividend withholding rate under the Canada-U.S. Tax Treaty rather than the default 30%.2Internal Revenue Service. Instructions for Form W-8BEN Without a valid W-8BEN on file, every dividend gets docked at 30% instead of 15%. The form is valid for three years, so put a note in your calendar to renew it.
Choosing the Right Account Type
The account you hold U.S. shares in matters more to your after-tax return than the commission you pay or even the stock you pick. The reason is that the IRS and the CRA treat each Canadian account type differently.
- RRSP. The most tax-efficient place for U.S. dividend payers. The Canada-U.S. Tax Treaty recognizes the RRSP as a qualified retirement plan, so U.S. dividends land in the account with no American withholding. Canadian tax is deferred until you withdraw.
- TFSA. The IRS does not recognize the TFSA under the treaty. U.S. dividends still face the 15% treaty withholding, and because TFSA income isn’t taxable in Canada, you can’t claim a foreign tax credit to recover it. That 15% is a permanent loss.
- Non-registered cash or margin account. Dividends face the 15% treaty withholding, but you claim a foreign tax credit on your Canadian return and generally recover it in full. Capital gains are taxed in Canada on 50% of the gain at your marginal rate. No contribution limits, no deferral.
The practical takeaway: hold dividend-heavy U.S. stocks in an RRSP where possible, and use the TFSA for growth stocks that pay little or no dividend, since the withholding drag only hits dividends and not price appreciation.
Funding the Account, Converting Currency, and Placing the Trade
Once the account is approved, link your Canadian bank through an electronic funds transfer using your transit, institution, and account numbers. Initial deposits usually settle in one to three business days.
Canadian dollars sitting in the account can’t buy U.S.-listed shares directly — you convert first. The commission on the trade is rarely the real cost. The currency conversion is. Brokerages apply a spread over the interbank rate that commonly runs 1% to 2%, so a $50,000 conversion can quietly cost $500 to $1,000, and the same spread hits again when you sell and convert back.
To place the trade, enter the U.S. ticker (AAPL, MSFT, and so on) on the order screen. A market order fills immediately at the best available price; a limit order only fills at your specified price or better, which gives you more control on thinly traded names where the bid-ask spread is wide.3U.S. Securities and Exchange Commission. Types of Orders Confirmation typically comes back within seconds.
Cutting the FX Cost With Norbert’s Gambit
A common workaround is a technique called Norbert’s Gambit, which uses an interlisted ETF to avoid the brokerage’s conversion spread. You buy the Canadian-dollar version of the ETF (Horizons’ DLR.TO is the usual choice), ask the brokerage to journal the shares over to the U.S.-dollar version (DLR.U.TO), wait roughly four business days for settlement, and sell the U.S.-dollar shares. You end up with U.S. cash and pay only two trading commissions instead of a percentage-based FX markup. Reverse the steps to convert USD back to CAD. Not every brokerage makes the journaling step easy, so confirm the process before you rely on it.
The 15% Dividend Withholding Tax
When a U.S. company pays you a dividend, the IRS takes its cut before the money reaches your account. The default withholding rate on dividends paid to non-resident aliens under Section 1441 of the Internal Revenue Code is 30%.4Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens For Canadians with a valid W-8BEN on file, the Canada-U.S. Tax Treaty drops that to 15%.5eCFR. 26 CFR 1.1441-1 – Requirement for the Deduction and Withholding of Tax on Payments to Foreign Persons The brokerage does the withholding automatically; the net amount is what shows up in your account.
How much of that 15% you actually lose depends on the account. In a non-registered account, the foreign tax credit on your Canadian return offsets the U.S. withholding roughly dollar for dollar. In an RRSP, the treaty exempts you entirely. In a TFSA, the 15% is gone for good.
Capital Gains Are Taxed in Canada, Not the U.S.
This is the clean part. A non-resident alien who is not engaged in a U.S. trade or business — and buying stocks through a Canadian broker qualifies — generally owes no U.S. tax on capital gains, so long as they were present in the United States for fewer than 183 days during the tax year.6Internal Revenue Service. Publication 519 – U.S. Tax Guide for Aliens Trading from Canada, that condition is almost always met. Gains are taxed only by the CRA, with 50% of the gain included in your taxable income at your marginal rate.
One quirk to watch: currency movement affects the Canadian-dollar gain. If you buy a U.S. stock at $100 USD when the rate is 1.35 and sell at $100 USD when the rate is 1.40, you’ve realized no U.S.-dollar gain but you have a taxable Canadian-dollar gain. The CRA expects you to convert each purchase and sale at the exchange rate on the transaction date.
Canadian Reporting: T5 and the T1135 Threshold
Your brokerage issues a T5 Statement of Investment Income for U.S. dividends. Box 15 shows the foreign income and Box 16 shows the U.S. tax already withheld.7Canada Revenue Agency. T5 Statement of Investment Income – Slip Information for Individuals The Box 16 figure feeds into the foreign tax credit on line 40500 of your return, which prevents double taxation. Capital gains from selling U.S. shares go on Schedule 3, the same schedule you’d use for Canadian gains.
The filing that catches investors off guard is Form T1135. If the total cost of your specified foreign property tops $100,000 CAD at any point during the year, you must file the Foreign Income Verification Statement with the CRA.8Canada.ca. Questions and Answers About Form T1135 The trigger is cost, not market value, so a portfolio that has since dropped below $100,000 still requires the filing if its cost base crossed the line at any point in the year.
There are two versions of the form. If total cost stayed under $250,000 all year, you can use the simplified Part A. At $250,000 or more, Part B requires detailed property-by-property reporting. Penalties are steep: $25 per day up to $2,500 for a late return, up to $12,000 where the CRA finds the failure was knowing or due to gross negligence, and up to $24,000 if you ignore a formal demand to file.9Canada.ca. Questions and Answers About Penalties The form is due at the same time as your income tax return.
U.S. Estate Tax on U.S.-Situated Assets
U.S.-listed stocks count as U.S.-situated assets for estate tax purposes. When a non-U.S. citizen dies owning them, the estate may owe U.S. federal estate tax, and the filing threshold for Form 706-NA is just $60,000 in U.S.-situated assets. That figure is not indexed for inflation.10Internal Revenue Service. Estate Tax for Nonresidents Not Citizens of the United States Even a modest U.S. portfolio clears it.
The Canada-U.S. Tax Treaty softens this through a prorated unified credit. Instead of the small $13,000 base credit non-residents otherwise receive, a Canadian estate can claim a share of the much larger unified credit available to U.S. citizens. The formula is the ratio of U.S.-situated gross estate to worldwide gross estate, multiplied by the full unified credit for the year of death. If U.S. holdings are a small slice of your worldwide estate, the prorated credit often wipes out the tax. If U.S. stocks are the bulk of your wealth, a real bill can result, and it’s worth a cross-border tax specialist looking at options like holding U.S. shares through a Canadian corporation or certain insurance structures.
When You Actually Need to File a U.S. Tax Return
Most Canadian investors never file a U.S. return for their stock holdings. If your brokerage correctly withholds at the 15% treaty rate on dividends and you owe no U.S. tax on capital gains, there is nothing to settle with the IRS. You would need to file Form 1040-NR only if the withholding didn’t cover what you owed — for instance, if the brokerage failed to withhold, or if you were physically in the U.S. for 183 days or more during the year and realized capital gains.11Internal Revenue Service. Instructions for Form 1040-NR – U.S. Nonresident Alien Income Tax Return You might also file voluntarily to reclaim over-withheld tax, such as when an expired W-8BEN caused withholding at 30% instead of 15% and you want the difference back.