When you buy a US or international ETF, you're not just buying stocks or bonds — you're also taking a position on currency. Here's what that means and how to think about hedged versus unhedged funds.
When a Canadian investor buys a US or international ETF, two things move the price: the performance of the underlying holdings, and the exchange rate between the Canadian dollar and the foreign currency. Currency hedging is a technique fund managers use to strip out that second factor. A hedged ETF uses derivatives, typically forward contracts, to offset the effect of currency movements, so the fund's return is designed to track the underlying index in its local currency terms, regardless of what CAD/USD or CAD/EUR does. An unhedged ETF makes no such adjustment. Your return is a combination of the index performance and however the currency happened to move over the holding period.
Consider an unhedged US equity ETF held by a Canadian investor. If the US market rises but the Canadian dollar strengthens against the US dollar over the same period, part of the equity gain gets eroded when converted back to CAD terms. Conversely, if the Canadian dollar weakens while US markets are flat or down, the currency move alone can produce a positive return in CAD terms. This works in both directions — currency can amplify gains or amplify losses, and it can also offset losses or offset gains. Over short periods, currency swings can be as large as, or larger than, the swings in the underlying asset itself. Over long periods, exchange rate effects can still matter, but many investors view them as a secondary source of return and risk relative to the underlying asset class.
| Hedged ETF | Unhedged ETF | |
|---|---|---|
| What it does | Uses derivatives (typically forward contracts) to offset currency movements so the return tracks the underlying index in its local currency terms | Makes no currency adjustment; your return combines index performance and however the currency moved over the holding period |
| Management expense ratio | Typically carries a somewhat higher management expense ratio than its unhedged counterpart | Typically the lower-fee counterpart, without ongoing hedging costs |
| Tracking drag | Can introduce tracking drag -- small discrepancies versus the true local-currency return of the underlying index, from rolling forward contracts, interest rate differentials, and rebalancing costs | No hedging mechanics involved, so no hedging-related tracking drag |
| Best suited for | Shorter time horizons and fixed-income holdings, where stability is the goal | Long-horizon equity holdings, where currency effects have historically tended to average out to some degree |
Hedging removes currency swings from your return but typically costs more and can introduce tracking drag versus the underlying index.
Hedging is not free. Funds that hedge currency exposure typically carry a somewhat higher management expense ratio than their unhedged counterparts, since maintaining a rolling program of forward contracts involves ongoing transaction costs. Beyond the explicit fee, hedging can introduce tracking drag — small discrepancies between the hedged fund's return and the true local-currency return of the underlying index. This can arise from the mechanics of rolling forward contracts, interest rate differentials between the two currencies, and the operational costs of rebalancing the hedge as the portfolio value changes. None of this means hedging is a bad choice; it simply means it comes with a cost and some imprecision that unhedged funds don't have.
A common framework: lean toward hedging for shorter-term needs and fixed income where stability is the goal; lean toward unhedged for long-term equity holdings where hedging's cost may not be justified by the diversification given up.
Currency hedging is generally more attractive for shorter time horizons, where the investor cares about the value of the investment in Canadian dollars at a specific, relatively near-term date. It's also commonly used for fixed-income holdings. Bonds are typically held for their steady income and lower volatility, and unhedged currency exposure can introduce a level of volatility that overwhelms the modest yield a bond is expected to deliver. For a Canadian investor holding US or international bonds specifically for stability, hedging the currency exposure can help the position behave more like the low-volatility asset it's meant to be, rather than becoming a de facto currency bet.
For long-horizon equity holdings, many investors choose to leave currency exposure unhedged. Over long periods, currency effects have historically tended to average out to some degree, and paying an ongoing hedging cost for decades can add up. There's also a diversification argument: holding foreign currency exposure alongside foreign equities can, at times, reduce overall portfolio volatility from a Canadian investor's perspective, since currency and equity markets don't always move in the same direction at the same time. This isn't guaranteed and varies by period, but it's a common reason long-term equity investors accept unhedged exposure rather than paying to remove it.
In Canada, ETF providers generally use naming conventions to flag currency hedging, though the exact labels vary by issuer. It's common to see the letters "CAD-Hedged" or the abbreviation "(CAD Hgd)" appended to a fund's name, or a distinct ticker suffix, even though both the hedged and unhedged versions may trade on the same exchange (for example, both listed with a ".TO" suffix on the Toronto Stock Exchange). Two funds tracking the same underlying US index might have nearly identical holdings but different currency treatment, so it's worth reading the fund's summary documents rather than assuming based on the name alone. Always check the fund fact sheet or prospectus to confirm whether, and how, currency hedging is applied, since terminology isn't perfectly standardized across providers.
There's no universal right answer between hedged and unhedged ETFs; it depends on the asset class, the time horizon, and your comfort with currency-driven swings in value. A common framework is to lean toward hedging for shorter-term needs and for fixed income, where stability is the goal, and to lean toward unhedged exposure for long-term equity holdings, where the additional cost of hedging may not be justified by the diversification given up. Whichever mix you choose, tracking both your holdings and their currency exposure over time makes it easier to understand what's actually driving your returns. Tools like WealthWise can help Canadian investors see currency exposure alongside overall portfolio performance in one place.
Hedging aims to substantially reduce currency risk, but it's rarely perfect. Hedging programs are typically rebalanced periodically rather than continuously, and small mismatches, along with the mechanics of rolling forward contracts, mean some residual currency effect and tracking drag can remain.
Not necessarily in every single case, but hedged versions commonly carry a somewhat higher management expense ratio than their unhedged counterparts, reflecting the ongoing cost of maintaining the currency hedge. It's worth comparing the fee on the specific funds you're considering rather than assuming a fixed difference.
There's no single right answer. Many long-term equity investors choose to stay unhedged, viewing currency exposure as a secondary diversification factor, while others prefer the more predictable, index-like behaviour of a hedged fund. It depends on your time horizon, goals, and tolerance for currency-driven swings.
Many Canadian providers add wording like "CAD-Hedged" to the fund name or use a distinguishing suffix, but conventions differ by issuer and aren't fully standardized. The safest approach is to check the fund's official fact sheet or prospectus rather than relying on the ticker alone.
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