Hedged vs Unhedged ETF Returns: Stop Treating Currency Protection as Free

Published: July 16, 2026 · Last reviewed: July 16, 2026

Two funds can hold almost the same stocks and still behave like different investments. That is the real trap in the hedged-versus-unhedged debate. Reduce it to a tiny fee gap and you miss the thing that actually drives the result: currency. Call that gap a hidden 0.20% annual cost, and you have already overstated what the data shows.

So the comparison should start with currency exposure, not the ticker. One fund says “currency hedged.” The other does not. It is tempting to line up two expense ratios, crown the cheaper one, and move on. That shortcut skips the real decision. An unhedged fund lets currency translation flow straight into your dollar return. A hedged fund uses forward contracts to cancel most of it. Depending on the portfolio, that overlay can cut risk or quietly remove diversification you wanted, and it can help or hurt returns for years at a stretch.

Everything here is about developed-market equity for a dollar-based investor. Foreign bonds, emerging-market currencies, and a household saving for a euro or yen expense are different problems, and we keep them separate.

HEFA vs EFA: the decision in one table

HEFA builds its core equity exposure by holding EFA and then adds currency forwards on top. The two funds start from essentially the same underlying equity exposure, but they do not deliver the same experience.

Expense ratios reflect current prospectus figures. Standard deviation and annualized return figures are dated June 30, 2026. They describe one historical currency regime and do not establish which fund will lead next.

Primary sources: current HEFA and EFA product pages, accessed July 16, 2026. HEFA · EFA

The return row is the first reality check. If cost were the main difference, two funds with nearly identical equity exposure would have stayed close. They did not. Over this stretch, the currency overlay mattered far more than the fee.

Use this comparison when you are choosing between hedged and unhedged developed-market equity in a dollar portfolio. Do not stretch it to foreign bonds, emerging markets, short-term reserves, or money you owe in another currency. Each of those changes the answer.

Why hedged and unhedged returns can diverge

An unhedged international ETF combines the local stock return with the effect of converting foreign currencies back into dollars. A hedged ETF tries to strip most of that currency translation out through forward contracts. In plain terms: an unhedged return is the foreign stock result plus or minus the currency move, while a hedged return swaps most of that currency move for the economics of the forward contracts, then nets out fund and trading costs.

That is why the hedge cannot be reduced to a fee. Forward prices reflect interest-rate differences between currencies. The realized result also rides on spot exchange rates, hedge timing, transaction spreads, tracking, and the fund’s operating expenses.

Campbell, Serfaty-de Medeiros, and Viceira found that average currency excess returns in their 1975–2005 developed-market sample were statistically indistinguishable from zero. That undercuts any claim that foreign currency hands you a dependable long-run premium. It does not mean every ten-year currency contribution lands at zero, or that a hedge can only subtract.

The same paper also dismantles any universal volatility claim. For a US investor, the optimal currency policy cut annualized standard deviation by about 2.12 percentage points on an equally weighted world portfolio and 1.57 points on a value-weighted one, measured against leaving the currency unhedged (their Table 7, using 1975–2005 data and annualized three-month returns). A full hedge did worse than the optimal hedge, and the benefit swung with the investor’s base currency. There is no single number that fits everyone.

Primary source: Campbell, Serfaty-de Medeiros, and Viceira, Global Currency Hedging, NBER Working Paper 13088 (Table 7); later published in the Journal of Finance. Read the paper.

Vanguard’s own shorthand — hedge fixed income, leave equity unhedged — is a rule of thumb, not a law. Its real point is that currency risk has to be judged at the portfolio level. A low-volatility bond sleeve usually wants a high hedge ratio, because currency swings can dwarf the bonds’ own movement. An equity-heavy portfolio can keep more currency exposure and treat it as diversification.

Readers who want to separate the currency line from the stock line can use the framework in our strong-dollar international ETF analysis. The allocation call still lives inside a broader asset allocation strategy, not in a one-fund performance chart.

What currency hedging actually costs

A clean read on cost separates four things that usually get crushed into the single phrase “hedging cost.” They are not interchangeable.

What you actually pay today is 0.35% for HEFA versus 0.32% for EFA, a three-basis-point gap. The 0.70% you may see quoted is HEFA’s gross ratio before a contractual fee waiver; that waiver runs through November 29, 2030, and nothing in the fact sheet says the net cost springs to 0.70% the day after.

Vanguard’s 0.17% needs the same scrutiny. In its May 2026 paper, The FX Dimension: Evaluating Currency Hedging for Global Multi-Asset Portfolios, Vanguard uses 17 basis points a year as the maximum transaction-cost assumption drawn from a historical currency-spread chart, then adds an assumed 0.08% to 0.33% expense-ratio premium. It calls those numbers hypothetical in plain language. Nowhere does the paper pin that maximum on HEFA as a current forward-roll charge.

Primary sources: iShares HEFA fact sheet dated March 31, 2026, and Vanguard, The FX Dimension (May 2026). HEFA fact sheet · Vanguard paper

What small cost assumptions do to $180,000

Here is the part worth being precise about: the original $9,971 figure is arithmetically correct. The label was the problem. It is what you get from assuming a constant 0.20 percentage-point annual drag for twelve years: an assumption, not an observed HEFA-versus-EFA cost.

Method: each gap is 180,000 × [(1.08)^12 − (1.08 − drag)^12], giving $1,508.60 at 0.03%, $5,010.77 at 0.10%, $9,970.72 at 0.20%, rounded to the dollar. It isolates the drag and models nothing else: no currency moves, forward carry, changing spreads, taxes, contributions, tracking, or fee changes. None of the rows predicts which fund wins. Method reviewed July 16, 2026 · TheFinSense calculation methodology.

The first row uses current prospectus figures; the others are sensitivity tests, not forecasts.

Run the assumption on your own balance

The calculator keeps the distinction intact: the drag you pick is a scenario input, not an estimate of the future HEFA-versus-EFA gap.

When hedging earns its place

The real question is not which ticker won last decade. It is whether a hedge solves a risk problem that actually exists in the rest of your portfolio.

Strip the table down to two people. The first is saving for retirement decades out, spends in dollars, and holds a global stock sleeve for growth. For her, short-term currency swings in an unhedged fund may be tolerable because the money is not tied to a foreign-currency bill; paying a fund to run a standing hedge may solve a problem she does not actually have. The second is a family that owes two years of tuition in euros. Their problem is not volatility in the abstract; it is a bill in a currency they do not earn. Matching that liability with a hedge is not a performance bet. It is removing a risk they can actually name.

That is the whole test. If the hedge matches a bond sleeve or a bill in another currency, it has a clear job. Without that job, unhedged foreign equities remain a reasonable starting point.

Portfolio construction matters more than the ticker comparison. A household that already owns a heavily US-centered portfolio faces a different decision from one with foreign-currency income or a bond-heavy allocation. Our 100% US portfolio analysis covers the home-bias side of that tradeoff.

Switching funds also creates friction this article cannot estimate without your account details. Taxable gains, bid-ask spreads, time out of market, and wash-sale interactions can swamp a small fee difference. Price those before replacing a position you already hold.

Hedged vs unhedged ETF FAQ

These are the questions most likely to change the decision.

The bottom line on hedged vs unhedged ETF returns

Strip away the packaging and HEFA versus EFA is a currency-risk decision with a three-basis-point explicit fee gap. The $9,971 is not a bill HEFA sends you.

The figure earns its place only when it is labeled honestly: it is the twelve-year opportunity cost of a steady 0.20-point drag on $180,000 at an 8% gross return. Nothing in the sources turns that drag into HEFA’s actual recurring cost.

For many US investors, leaving a long-term international-equity sleeve largely unhedged is a defensible starting point. Hedge more when the portfolio holds foreign bonds, a known foreign-currency liability, or a risk budget that specifically benefits from a smoother currency path.

Educational quantitative analysis based on published data. Not investment, tax, or legal advice. Consult a licensed professional before acting on any calculation. About TheFinSense.