Independent writing on tax-smart planning, mortgage strategy, and retirement building. For Canadian professionals who want the whole picture, not just a piece of it.
U.S. or Canadian ETF: When Foreign Exchange Costs Actually Matter
Ryan has $180,000 in his RRSP, all sitting in a single Canadian-listed S&P 500 ETF. The MER is 0.09%. He's thinking about selling it and buying the U.S.-listed version of the same fund, which charges 0.03%. Over 25 years, the difference, six basis points, would save him roughly $6,800, assuming 7% annual growth. He asks if it's worth the switch.
The answer is no, because Ryan banks at TD and would pay them $2,700 in foreign exchange markup (1.5% on $180,000) to convert his CAD to USD. Even if he makes no further contributions, he wouldn't break even on that conversion cost for 12 years. If he does contribute more, each deposit resets the payback clock unless he learns Norbert's Gambit, which he won't.
Sarah has the same $180,000 in the same Canadian ETF, also in an RRSP. Her version yields 1.8% in dividends. She runs the same math Ryan did on the MER and gets the same $6,800 figure. Then she runs a second calculation: the U.S.-listed ETF, held in an RRSP, avoids the 15% withholding tax the IRS charges on dividends paid to foreign investors. The Canadian wrapper does not. On a 1.8% yield, that 15% haircut costs her 0.27% per year, or roughly $10,800 over 25 years. She uses Norbert's Gambit to convert at 0.15%, costing $270. She breaks even in four months.
Same fund. Same account type. Opposite recommendation.
Where the withholding tax actually applies
The 15% U.S. dividend withholding only matters in one place: an RRSP or RRIF holding a U.S.-listed ETF. The Canada-U.S. tax treaty exempts those accounts. It does not exempt TFSAs, FHSAs, or non-registered accounts. If Sarah held the U.S.-listed fund in her TFSA instead, she'd pay the 15% either way, so the Canadian version would win on simplicity alone.
For non-registered accounts, the foreign withholding tax is reclaimable as a credit on your Canadian return, which zeroes out the tax difference but introduces adjusted cost base tracking in USD. Most people get that wrong.
The MER gap has collapsed
Ten years ago, U.S.-listed equity ETFs often ran 15 to 20 basis points cheaper than their Canadian equivalents. Vanguard and BlackRock have spent the last decade collapsing that gap. The Canadian version of the total U.S. market now charges 0.16%. The U.S. version charges 0.03%. That's still a gap, but on a $50,000 position it's $65 per year. You will spend more than that on lunch the day you set up your brokerage account.
Below $100,000 per holding, the MER math is rounding error unless you are using Norbert's Gambit for every contribution and rebalancing in kind. Above $200,000, the math starts to tilt U.S. if the holding is in an RRSP and pays a meaningful dividend.
The decision tree
RRSP or RRIF, holding above $100,000, dividend yield above 1.5%, willing to use Norbert's Gambit: U.S.-listed wins on withholding tax alone. MER savings are a bonus.
TFSA or FHSA, any balance: Canadian-listed. You get no treaty benefit and the simplicity cost of USD is not worth it.
Non-registered: Canadian-listed unless your balance exceeds $500,000 and you have an accountant who tracks ACB in foreign currency without charging you more than the MER difference.
Ryan should stay Canadian. Sarah should switch, but only because she has six figures in an RRSP and took 90 minutes to learn the Gambit. The decision has nothing to do with patriotism or diversification. It's denomination: if the withholding tax applies and you can convert cheaply, trade in USD. Otherwise the savings are a rounding error dressed up as strategy.
Ryan has $180,000 in his RRSP, all sitting in a single Canadian-listed S&P 500 ETF. The MER is 0.09%. He's thinking about selling it and buying the U.S.-listed version of the same fund, which charges 0.03%. Over 25 years, the difference, six basis points, would save him roughly $6,800, assuming 7% annual growth. He asks if it's worth the switch.
The answer is no, because Ryan banks at TD and would pay them $2,700 in foreign exchange markup (1.5% on $180,000) to convert his CAD to USD. Even if he makes no further contributions, he wouldn't break even on that conversion cost for 12 years. If he does contribute more, each deposit resets the payback clock unless he learns Norbert's Gambit, which he won't.
Sarah has the same $180,000 in the same Canadian ETF, also in an RRSP. Her version yields 1.8% in dividends. She runs the same math Ryan did on the MER and gets the same $6,800 figure. Then she runs a second calculation: the U.S.-listed ETF, held in an RRSP, avoids the 15% withholding tax the IRS charges on dividends paid to foreign investors. The Canadian wrapper does not. On a 1.8% yield, that 15% haircut costs her 0.27% per year, or roughly $10,800 over 25 years. She uses Norbert's Gambit to convert at 0.15%, costing $270. She breaks even in four months.
Same fund. Same account type. Opposite recommendation.
Where the withholding tax actually applies
The 15% U.S. dividend withholding only matters in one place: an RRSP or RRIF holding a U.S.-listed ETF. The Canada-U.S. tax treaty exempts those accounts. It does not exempt TFSAs, FHSAs, or non-registered accounts. If Sarah held the U.S.-listed fund in her TFSA instead, she'd pay the 15% either way, so the Canadian version would win on simplicity alone.
For non-registered accounts, the foreign withholding tax is reclaimable as a credit on your Canadian return, which zeroes out the tax difference but introduces adjusted cost base tracking in USD. Most people get that wrong.
The MER gap has collapsed
Ten years ago, U.S.-listed equity ETFs often ran 15 to 20 basis points cheaper than their Canadian equivalents. Vanguard and BlackRock have spent the last decade collapsing that gap. The Canadian version of the total U.S. market now charges 0.16%. The U.S. version charges 0.03%. That's still a gap, but on a $50,000 position it's $65 per year. You will spend more than that on lunch the day you set up your brokerage account.
Below $100,000 per holding, the MER math is rounding error unless you are using Norbert's Gambit for every contribution and rebalancing in kind. Above $200,000, the math starts to tilt U.S. if the holding is in an RRSP and pays a meaningful dividend.
The decision tree
RRSP or RRIF, holding above $100,000, dividend yield above 1.5%, willing to use Norbert's Gambit: U.S.-listed wins on withholding tax alone. MER savings are a bonus.
TFSA or FHSA, any balance: Canadian-listed. You get no treaty benefit and the simplicity cost of USD is not worth it.
Non-registered: Canadian-listed unless your balance exceeds $500,000 and you have an accountant who tracks ACB in foreign currency without charging you more than the MER difference.
Ryan should stay Canadian. Sarah should switch, but only because she has six figures in an RRSP and took 90 minutes to learn the Gambit. The decision has nothing to do with patriotism or diversification. It's denomination: if the withholding tax applies and you can convert cheaply, trade in USD. Otherwise the savings are a rounding error dressed up as strategy.
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