EAFE vs. ACWI comes down to one question: do you already own US stocks separately? The MSCI EAFE Index tracks about 690 large- and mid-cap companies in developed markets outside the United States and Canada, so it slots in as a pure international piece next to a US fund. The MSCI ACWI, short for All Country World Index, holds more than 2,500 stocks across roughly 47 developed and emerging countries, with the US alone making up about 61.6% of its weight.1MSCI. MSCI ACWI Index2MSCI. MSCI EAFE Index One is a component. The other is meant to be the whole equity sleeve.
What Each Index Actually Holds
EAFE stands for Europe, Australasia, and Far East. It covers large- and mid-cap companies across developed markets worldwide and explicitly excludes the United States and Canada.2MSCI. MSCI EAFE Index The largest country weights as of early 2026 are Japan at 23.3%, the United Kingdom at 14.9%, France at 10.3%, Switzerland at 9.5%, and Germany at 9.2%. Japan’s share alone roughly matches Switzerland and Germany combined, so anyone buying EAFE is taking on meaningful concentration in the Japanese market.
ACWI captures large- and mid-caps across both developed and emerging markets, US included.1MSCI. MSCI ACWI Index It contains everything EAFE holds, plus US and Canadian stocks and about two dozen emerging market countries. That makes it the closest thing to a single-index snapshot of the global stock market.
The US Weighting Changes Nearly Everything Else
Because the US accounts for roughly 62% of ACWI, buying an ACWI fund gives you a portfolio that is nearly two-thirds American stocks. EAFE holds zero US equities by design.
That single design choice ripples through the rest of the comparison. Sector mix is one place it shows up. ACWI’s top sector is information technology at roughly 26%, followed by financials at about 17% and industrials near 12%, pulled toward the tech-heavy composition of the S&P 500 by its US weight. EAFE, without any US tech mega-caps, tilts toward financials, industrials, and health care, with European and Japanese banks, pharmaceutical companies, and industrial conglomerates doing more of the work.
Correlation to US equities is the other place. ACWI tracks extremely closely with the S&P 500, with correlation estimates above 0.95 in recent years. EAFE, with no US stocks in it, offers a meaningfully lower correlation, which is why it functions as a real diversifier when paired with a separate US allocation.
Emerging Markets
EAFE is strictly developed markets. It excludes China, India, Brazil, and Taiwan entirely. ACWI layers emerging markets on top of its developed-market holdings, and that slice typically represents about 10% of the total index. Within ACWI, China carries roughly a 2.9% weight.1MSCI. MSCI ACWI Index Investors who want international exposure without emerging markets choose EAFE. Those who want the full spectrum lean toward ACWI, or pair EAFE with a dedicated emerging markets fund.
Recent Performance
US stocks led international developed markets for much of the past decade, and the gap between the two indexes reflected that. In 2024, ACWI returned 17.49% while EAFE returned 3.82%.1MSCI. MSCI ACWI Index In 2025, the picture flipped: EAFE surged 31.22% while ACWI returned 22.34%.2MSCI. MSCI EAFE Index Anchoring expectations on the last decade of US outperformance tends to produce surprises when leadership rotates.
Volatility, on the other hand, is similar. EAFE’s 10-year annualized standard deviation is approximately 14.48%, and ACWI’s sits in the same range.2MSCI. MSCI EAFE Index Adding emerging markets to ACWI doesn’t move the risk needle much, partly because they’re a small share of the total index.
Dividends, Currency, and Foreign Taxes
EAFE-tracking funds pay higher dividend yields than ACWI-tracking funds. As of early 2026, the iShares MSCI EAFE ETF (EFA) had a dividend yield of approximately 3.45%, while the iShares MSCI ACWI ETF (ACWI) yielded closer to 1.6%.3iShares. iShares MSCI EAFE ETF | EFA4iShares. iShares MSCI ACWI ETF The gap comes from composition: US tech companies that dominate ACWI tend to pay low or no dividends, while European and Japanese firms distribute more of their earnings.
Currency exposure follows the same logic. A fund tracking EAFE exposes a US-based investor to foreign currency movements across every holding. When the euro, yen, or pound strengthens against the dollar, EAFE returns get a boost in dollar terms. When those currencies weaken, returns take a hit even if underlying stocks did well locally. ACWI dilutes that risk through its 62% US allocation, since those holdings are already in dollars. Currency-hedged versions of both indexes exist, but hedging adds cost and cancels any gain from favorable currency moves.
International equity funds also pay dividends that often have foreign taxes withheld at the source country level. US investors can generally recoup those taxes through the foreign tax credit if the fund elects to pass the credit through to shareholders, which most large international ETFs do. Claiming it requires a Form 1099-DIV showing the foreign country, your share of foreign income, and the foreign taxes paid on your behalf; the foreign tax must be an income tax actually paid or accrued, reflecting the legal liability after any treaty reductions.5Internal Revenue Service. Foreign Taxes That Qualify for the Foreign Tax Credit This matters more for EAFE than for ACWI, because a larger share of EAFE dividends comes from foreign sources. Most of ACWI’s dividend income is US-based and carries no foreign withholding at all.
Cost
The flagship ETFs for both indexes charge the same headline fee. EFA and ACWI each carry a 0.32% annual expense ratio.3iShares. iShares MSCI EAFE ETF | EFA4iShares. iShares MSCI ACWI ETF
0.32% is no longer the cheapest way to get international developed-market exposure, though. The Vanguard FTSE Developed Markets ETF (VEA) tracks a similar but not identical universe and charges just 0.03%, holding nearly 3,900 stocks. VEA includes small-caps and Canadian stocks that EAFE excludes, so it isn’t a perfect substitute for EFA, but the tenfold cost difference is worth knowing if you’re building a long-term portfolio.
Which One Fits Your Portfolio
If you already hold a US stock index fund, EAFE fits cleanly as your international piece. It gives you developed-market exposure with no overlap, and you control exactly how much goes where. Pairing a US fund with EAFE and a separate emerging markets fund gives the most granular control over regional weights.
ACWI works best as a single all-in-one global equity holding. One fund, one position, exposure to the US, Europe, Japan, and emerging markets in proportion to current market values. The tradeoff: you accept whatever regional split the market dictates, which right now means about 62 cents of every dollar goes to the US. If that feels like too much, you can’t easily adjust without layering on additional funds, which cancels the simplicity that made ACWI attractive.
There’s also a middle-ground option worth knowing about. The MSCI ACWI ex-US covers everything ACWI does except the United States. It functions like EAFE with emerging markets added on top, which makes it a useful single-fund complement to a separate US allocation.
One pattern quietly hurts investors: holding both an ACWI fund and a separate US index fund without accounting for the overlap. Because ACWI is already 62% US stocks, adding an S&P 500 fund on top pushes total US exposure well above 80%. If you go the ACWI route, treat it as your complete equity allocation, or adjust the rest of the portfolio to match.