Should Canadians hold US stocks in a TFSA or an RRSP?

Why the treaty singles out the RRSP

Article XXI of the Canada-US tax treaty exempts dividends and interest paid to certain Canadian retirement accounts, including the RRSP and RRIF, from US withholding tax. The treaty drafters recognized these as the Canadian equivalent of a US retirement account and extended the same kind of relief a US IRA gets on its own dividend income. A TFSA does not fit that description under the treaty; despite being tax-free in Canada, the IRS does not treat it as a retirement account, so it gets no exemption at all.

The distinction is entirely about how each account is defined for treaty purposes, not about how well either one shelters income from Canadian tax. Both a TFSA and an RRSP grow free of Canadian tax while the investment is held; the RRSP simply has the additional feature, from the treaty, of also being recognized on the US side as a retirement vehicle worth exempting from withholding. This is also why a similar exemption does not extend to a Registered Education Savings Plan or a Registered Disability Savings Plan, since neither one is a retirement account in the sense the treaty describes.

What this looks like in practice

A US stock paying a $100 dividend held inside an RRSP arrives as a full $100, with no US tax withheld. The same $100 dividend held inside a TFSA has 15% withheld at source, so only $85 actually lands in the account, and that $15 is gone for good: there is no Canadian tax on TFSA income against which to claim a foreign tax credit, and no mechanism to apply for a refund from the IRS on a properly-applied treaty rate. Held in a regular non-registered account, the same $100 dividend also has 15% withheld, but there the withholding is at least recoverable through the foreign tax credit against Canadian tax owed on that dividend.

Why the picture changes for growth stocks and Canadian-listed ETFs

A US stock that pays no dividend at all, or a very small one, largely sidesteps this whole question, since there is nothing meaningful for the US to withhold on. Held in a TFSA, a growth stock still delivers fully tax-free gains in Canada with no US withholding drag, which is exactly the profile that suits a TFSA well. The comparison above is specifically about the dividend stream, not about capital gains, which the US does not tax for a Canadian resident regardless of which account holds the stock.

A Canadian-listed ETF that itself holds US stocks adds another layer worth understanding. Even inside an RRSP, a Canadian-listed ETF holding US equities directly can still bear US withholding at the fund level before the distribution reaches your RRSP, because the treaty exemption applies to the account holding the security, and from the IRS's perspective the RRSP is holding units of a Canadian fund, not the US stock directly. A US-listed ETF, or a US stock held directly, inside an RRSP gets the full treaty benefit described above. This is a genuine structural difference and a common source of confusion, so it is worth checking the specific fund's structure rather than assuming every RRSP holding is automatically exempt.

Why T1135 does not enter the picture for either account

US stocks held inside an RRSP, RRIF or TFSA are excluded from T1135 reporting entirely, regardless of the account's total value, because registered accounts are specifically carved out of the specified foreign property rules. This is one advantage that applies equally to both account types and does not affect the withholding decision above; it only means you can set that particular filing question aside once the stock is inside either registered account.

Putting the pieces together

The practical rule most Canadians land on is to prioritize dividend-paying US stocks for RRSP contribution room specifically because of the withholding exemption, use the TFSA for growth-oriented US and Canadian holdings where the tax-free treatment does the most work, and hold whatever does not fit either account in a non-registered account where the 15% withholding is at least recoverable through the foreign tax credit. Contribution room and time horizon usually decide the mix as much as the withholding rule does, so this is one factor among several rather than the only one.

An RRSP that is running low on contribution room does not need to be topped up with only US dividend stocks to capture the exemption; the rule is simply a tiebreaker for deciding which of two similar holdings goes into which account, not a reason to change an otherwise sound investment plan. A well-diversified TFSA that happens to include a dividend-paying US stock is still a perfectly reasonable portfolio, just one carrying a small, permanent withholding cost on that particular holding that a similar RRSP holding would not.

How we help clients place US holdings

We review a client's full account mix, RRSP, TFSA and non-registered, before recommending where a new US position should sit, and we flag Canadian-listed funds that unexpectedly carry embedded US withholding inside an RRSP. For clients weighing a new contribution, we look at which holdings actually benefit from the RRSP exemption rather than assuming every US stock should go there by default. Our cross-border tax services cover this as part of a broader look at how registered accounts and US investments fit together.