EAFE vs. ACWI comes down to one question: do you already own US stocks separately, or do you want a single fund that covers the entire global market? The MSCI EAFE index tracks about 690 large- and mid-cap stocks across developed markets outside the US and Canada.1MSCI. MSCI EAFE Index The MSCI ACWI covers more than 2,500 stocks across roughly 47 developed and emerging countries, with US companies alone making up about 62% of its weight.2MSCI. MSCI ACWI Index If you hold an S&P 500 fund already, EAFE slots in beside it without overlap. If you want one position for everything, ACWI does that job.
What Each Index Holds
EAFE stands for Europe, Australasia, and Far East. It tracks developed markets worldwide and explicitly excludes the United States and Canada. Japan, the UK, France, Germany, Switzerland, Australia, and about 15 other countries make up the universe.1MSCI. MSCI EAFE Index
ACWI stands for All Country World Index. It captures large- and mid-cap stocks across both developed and emerging markets, including the US. With over 2,500 constituents across roughly 47 countries, it’s the closest a single index gets to the whole investable global stock market.2MSCI. MSCI ACWI Index
US Exposure Is the Core Difference
As of early 2026, the United States accounts for approximately 61.6% of the ACWI by float-adjusted market capitalization.2MSCI. MSCI ACWI Index An ACWI fund is close to two-thirds American stocks. EAFE holds zero US equities by design.
This single fact drives most of the practical consequences. ACWI tracks the S&P 500 closely, with correlation estimates above 0.95 in recent years. EAFE, with no US stocks at all, moves more independently and acts as a stronger diversifier when paired with a separate US position.
Without US mega-caps dominating the weights, EAFE’s country mix is more evenly spread. The largest positions 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%.1MSCI. MSCI EAFE Index Japan carries real concentration risk inside EAFE; its weight roughly matches Switzerland and Germany combined.
Emerging Markets
EAFE is strictly developed markets. It excludes China, India, Brazil, Taiwan, and every other emerging country. ACWI layers emerging markets on top of its developed holdings, with that slice typically around 10% of total weight. China alone carries roughly a 2.9% weight inside ACWI.2MSCI. MSCI ACWI Index
If you want international exposure without emerging markets, EAFE does that. If you want the full spectrum in one holding, ACWI covers it. A third option worth knowing: the MSCI ACWI ex-US covers everything ACWI does except the United States, which functions like EAFE with emerging markets added. It pairs cleanly with a separate US fund if you want both developed and emerging international in a single ticker.
Sector Tilt
ACWI’s top sector is information technology at roughly 26%, followed by financials near 17% and industrials around 12%. The heavy US weighting pulls the composition toward tech.
EAFE, without any US tech mega-caps, tilts more toward financials, industrials, and health care. European and Japanese banks, pharmaceutical makers, and industrial conglomerates drive its returns more than software or semiconductor firms do. This is a real source of diversification beyond simple geography.
Returns and Volatility
US stocks have outperformed international developed markets for much of the past decade, and that gap shows up when comparing these two. In 2024, ACWI returned 17.49% while EAFE returned 3.82%.2MSCI. MSCI ACWI Index The picture flipped in 2025: EAFE surged 31.22% and ACWI returned 22.34%.1MSCI. MSCI EAFE Index US leadership isn’t guaranteed in any given year.
Volatility is similar across the two. EAFE’s 10-year annualized standard deviation sits near 14.48%, and ACWI falls in the same range.1MSCI. MSCI EAFE Index Adding emerging markets to ACWI doesn’t meaningfully raise overall risk because the slice is small.
Dividends and the Foreign Tax Credit
EAFE funds generally pay higher dividend yields. As of early 2026, the iShares MSCI EAFE ETF (EFA) yielded 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 US tech companies that dominate ACWI tend to pay low or no dividends, while European and Japanese firms distribute more of their earnings.
Those international dividends usually have foreign taxes withheld at the source country. You can generally recoup them through the foreign tax credit, provided the fund elects to pass the credit through on your Form 1099-DIV. The foreign tax must be an income tax, it must actually have been paid or accrued, and it must reflect the legal and actual foreign liability after any treaty reductions; if a lower treaty rate was available but not claimed, your credit is limited to that lower rate.5Internal Revenue Service. Foreign Taxes That Qualify for the Foreign Tax Credit This matters more for EAFE investors than ACWI investors, because a larger share of EAFE’s dividend income is foreign-sourced.
Costs
The flagship ETFs for both indexes charge the same 0.32% expense ratio: iShares MSCI EAFE (EFA) and iShares MSCI ACWI (ACWI).3iShares. iShares MSCI EAFE ETF | EFA4iShares. iShares MSCI ACWI ETF
For developed international, 0.32% is no longer the cheapest option. The Vanguard FTSE Developed Markets ETF (VEA) tracks a similar but not identical universe at just 0.03% and holds nearly 3,900 stocks, including small-caps and Canadian stocks that EAFE excludes. It isn’t a perfect substitute, but the tenfold cost gap is worth weighing if you’re building a long-term portfolio and want EAFE-like exposure.
Which One to Pick
If you already hold a US stock index fund, EAFE is the clean choice. It gives you developed international exposure with no overlap, and you set the ratio between US, international developed, and (if you want it) emerging markets yourself. That control is the main reason to go this route.
If you want a single global equity holding, ACWI does it in one position. The trade-off is that you accept whatever regional allocation the market dictates, which right now puts roughly 62 cents of every dollar in the US. If that’s too much for your taste, you can’t easily dial it down without adding more funds, which cancels the simplicity.
Watch for one quiet mistake: holding both an ACWI fund and a separate S&P 500 fund. Because ACWI is already about 62% US, stacking an S&P 500 fund on top pushes total US exposure well above 80%. That isn’t global diversification in any meaningful sense. If you go with ACWI, treat it as your complete equity allocation, or adjust the mix deliberately.