What does currency hedging mean in an ETF?

When a Canadian investor buys an unhedged US equity ETF (e.g., VFV or VTI), the return depends on two things: (1) the performance of the underlying US stocks, and (2) the USD/CAD exchange rate at the time of sale. If the CAD strengthens against the USD after you buy, your returns are reduced when converted back to CAD. If the CAD weakens, your returns increase. Currency hedging removes this second factor. A hedged ETF uses financial contracts (forward contracts or currency swaps) to lock in an exchange rate on the portfolio's foreign currency exposure. The fund manager continuously rolls these contracts to maintain the hedge. The result: your return tracks the underlying index in local currency terms (USD return) converted at a fixed rate — CAD/USD moves do not affect your return. Hedged versions of popular ETFs: VSP (Vanguard S&P 500 CAD-hedged) vs VFV (unhedged); ZUE (BMO S&P 500 CAD-hedged) vs ZSP (unhedged); XSP (iShares S&P 500 hedged) vs XUS (unhedged). The hedged version typically has a higher MER (e.g., VFV at 0.09% vs VSP at 0.09% — similar in this case, but operational costs of hedging add up over time).

What does hedging actually cost?

Currency hedging costs money in several ways: (1) Management fees: hedged ETFs may charge slightly higher MERs to cover derivative contract management. The listed MER may be similar to the unhedged version, but the fund incurs costs. (2) Roll cost: forward contracts must be rolled (renewed) regularly — usually monthly. The roll cost depends on the interest rate differential between Canada and the US. When US interest rates exceed Canadian rates, the roll cost is positive for CAD-hedged investors (rolling USD forward contracts costs money). Historically, this "cost of carry" has been about 0.10–0.30%/year. (3) Hedge basis risk: the hedge is not perfect — small deviations between the hedged NAV and the theoretical hedged return accumulate over time, reducing performance. Over a 10–20 year period, hedging typically drags total returns by 0.10–0.40%/year versus unhedged equivalents. Academic studies of Canadian-listed hedged equity ETFs consistently show that the hedged version underperforms the unhedged version on a total-return basis over long periods, primarily due to carry costs and execution drag.

Does the TSX move with the USD/CAD exchange rate?

Yes — this is an important point that changes the hedging calculus for Canadian investors. Canada is a commodity-exporting economy. When oil prices rise, the Canadian dollar typically strengthens. When oil prices fall, the CAD typically weakens. Simultaneously: when oil prices rise, the TSX (which has heavy energy exposure) also tends to rise. When oil prices fall, the TSX falls too. This means: a Canadian investor with a TSX-heavy domestic portfolio already has indirect exposure to oil prices. Adding an unhedged US equity ETF provides a partial natural hedge — when the CAD weakens (Canadian assets decline), your USD-denominated US holdings are worth more in CAD terms. Holding unhedged US equities alongside Canadian equities provides a diversification benefit specifically tied to CAD/commodity volatility. Hedging away the USD/CAD movement removes this implicit diversification benefit. For this reason, many Canadian financial planners argue that long-term Canadian investors should hold unhedged US ETFs rather than hedged versions.

When does currency hedging make sense for a Canadian investor?

Hedging is most rational in specific circumstances: (1) Short time horizon (under 5 years): if you plan to use the funds in 3–5 years, you cannot afford to wait out currency swings. A retiree drawing down a US equity allocation needs predictable CAD values. (2) Large near-term withdrawal: e.g., you are planning to buy a home in 18 months and 30% of your down payment is in a US equity ETF. Hedging locks in the exchange rate and eliminates conversion risk. (3) Sequence-of-returns risk near retirement: if you are within 5 years of retiring and holding significant US equity, adding currency volatility to market volatility increases risk substantially. Hedging reduces one variable. (4) High psychological sensitivity to currency swings: if watching your CAD account value drop 5% because the CAD strengthened (even when US markets were flat) causes you to make bad decisions, a hedged ETF may produce better investor outcomes even at a cost. For investors with a 20+ year horizon who are accumulating and not withdrawing, the academic evidence consistently favours unhedged.

What is the historical performance of hedged vs unhedged S&P 500 ETFs in Canada?

Comparing VSP (Vanguard S&P 500 CAD-hedged) vs VFV (Vanguard S&P 500 unhedged): Over periods when the USD appreciated versus CAD (USD strengthens), unhedged (VFV) significantly outperformed hedged (VSP). Over periods when CAD appreciated, hedged (VSP) outperformed. USD/CAD range over the past 20 years: approximately $0.68 (CAD high, 2007) to $0.90 (2010s average) to about $0.72–0.75 (2024–2025). The CAD has generally weakened over 20+ years relative to the USD, which has benefited unhedged Canadian investors. Long-term return comparison (rolling 10-year periods ending 2025): unhedged equivalents outperformed hedged versions by approximately 0.2–0.5% annualized in most periods, primarily due to carry costs plus the structural CAD weakness. Important caveat: past performance of currency pairs does not predict future results. If the CAD strengthens significantly (e.g., oil price spike drives CAD back above 0.85 USD), unhedged investors would lose out relative to hedged.

Which ETF pairs are the main hedged vs unhedged comparisons?

Key hedged vs unhedged Canadian ETF pairs (S&P 500 exposure): VFV (Vanguard, unhedged, MER 0.09%) vs VSP (Vanguard, CAD-hedged, MER 0.09%); XUS (iShares, unhedged, MER 0.10%) vs XSP (iShares, CAD-hedged, MER 0.10%); ZSP (BMO, unhedged, MER 0.10%) vs ZUE (BMO, CAD-hedged, MER 0.20%); HXS (Horizons swap-based, unhedged, MER ~0.10%) — no direct hedged equivalent. For total international exposure: XEF (iShares International unhedged) vs — limited hedged options for non-US international. For US bond exposure: ZBH (BMO US high yield bond, unhedged) vs ZHY (CAD-hedged equivalent). Note: MERs change; verify current fees on the ETF provider website before investing. The MER difference between hedged and unhedged ETFs is often small or nil on the published MER — the real cost of hedging shows up in total return drag over time rather than the stated management fee.

Should I switch from a hedged to an unhedged ETF in my TFSA or RRSP?

Switching is straightforward inside registered accounts (TFSA and RRSP): selling a hedged ETF and buying an unhedged equivalent does not trigger a taxable event — all gains/losses inside TFSA and RRSP are not reported to CRA. The decision is purely financial: if you have a long investment horizon (10+ years) and are not planning large withdrawals, switching to unhedged is generally supported by the evidence. Process: sell VSP (or XSP, ZUE), wait for settlement (2 business days), buy VFV (or XUS, ZSP) — completed in 2 trades. In a non-registered account, switching from hedged to unhedged is a disposition for tax purposes. If your hedged ETF has an unrealized capital gain, selling it triggers a capital gains inclusion in that tax year. Factor that into the decision — the breakeven on the switch must account for the tax cost of the disposition. If the hedged ETF has an unrealized loss, switching is more attractive since you can realize the loss to offset other capital gains.

Hedged vs Unhedged ETFs in Canada: Currency Risk and Cost Comparison

Currency risk is real — but for most long-term Canadian investors, the cost of eliminating it exceeds the cost of accepting it.

What you are exposed to with an unhedged US ETF

When you hold VFV (or any unhedged US equity ETF) in a Canadian account, your stated CAD value = USD value of US stocks × CAD/USD rate. Both inputs vary. On a given day:

US stocks up 1%, CAD stable → your account is up 1%
US stocks up 1%, CAD strengthens 1% → your account is roughly flat
US stocks flat, CAD weakens 2% → your account is up 2%

Over time, both effects average out, but year-to-year volatility is higher with an unhedged position.

Cost summary: hedged vs unhedged

Factor	Unhedged (VFV)	CAD-hedged (VSP)
MER (2026 approximate)	0.09%	0.09%
Carry/roll cost of hedge	None	~0.10–0.30%/yr
Tracking difference vs benchmark	Lower	Higher (hedge drag)
CAD/USD exposure	Full	Eliminated
Best for	Long-term accumulators	Near-term withdrawals

Hedged ETF annualized drag (estimated, rolling 10-year periods)

Scenario	Unhedged total return	Hedged total return	Estimated drag
USD appreciates (USD stronger)	Higher	Lower	-0.5% to -1.5%/yr vs unhedged
USD depreciates (CAD stronger)	Lower	Higher	+0.5% to +1.0%/yr vs unhedged
USD/CAD flat (rare)	Equal	Hedge cost	~-0.10 to -0.30%/yr

Natural hedge rationale

Canadian investors holding domestic equities (TSX) already have implicit commodity/CAD exposure. Adding unhedged US equities creates a natural offset: when oil falls (TSX down, CAD down), unhedged US equity values rise in CAD terms. This correlation structure reduces overall portfolio volatility compared to a fully hedged international allocation.

Decision summary

Investor situation	Recommendation
Accumulating, 20+ year horizon	Unhedged (VFV, XUS, ZSP)
5–10 years to retirement	Consider partial hedge or mix
Within 5 years of retirement	Hedging worth evaluating
Scheduled large withdrawal within 2 years	Consider hedging that specific slice
Highly sensitive to CAD value swings	Hedging may improve behaviour