Generated August 15, 2026.
Overview
EFA and IEFA are both iShares ETFs that track developed markets outside the U.S. and Canada, but they differ in scope and cost structure. EFA tracks the standard MSCI EAFE Index (large and mid-cap stocks), while IEFA tracks the broader MSCI EAFE IMI Index, which adds small-cap exposure. The critical distinction is cost: IEFA's expense ratio of 0.07% undercuts EFA's 0.33% by a meaningful margin, and IEFA holds nearly $194B in assets compared to EFA's $79.3B.
How they differ
IEFA's inclusion of small-cap stocks via the IMI (Integrated Multiple Issue) methodology is the structural difference—it casts a wider net than EFA's large and mid-cap focus. The second major divergence is fees: IEFA's 0.07% expense ratio is less than one-quarter of EFA's 0.33%, creating a 26-basis-point annual drag favoring IEFA on identical returns. Distribution yields are nearly identical (IEFA at 3.12% versus EFA at 3.01%), both paid semi-annually, so yield-seeking investors will see negligible difference on that front. IEFA's larger AUM ($194B versus $79.3B) reflects its status as the "Core" offering in iShares' suite, suggesting it has become the mainstream choice since its 2012 inception. Beta is nearly identical between the two (0.89 for IEFA, 0.87 for EFA), indicating comparable market sensitivity.
Who each is best for
EFA: Fits investors who prefer the simplicity of large and mid-cap European, Australian, and Asian markets, or who were already holding the fund before lower-cost alternatives emerged and see no urgency to rebalance.
IEFA: Designed for investors seeking broad developed-markets exposure outside North America who prioritize cost efficiency and are comfortable adding small-cap diversification to their international allocation.
Key risks to know
- Small-cap volatility in IEFA: The addition of small-cap stocks in the IMI index exposes IEFA to higher price swings and lower liquidity than EFA's large-and-mid-cap universe, which may amplify drawdowns in risk-off periods.
- Currency exposure: Both ETFs carry unhedged exposure to the euro, British pound, yen, Australian dollar, and other developed-market currencies; strength in the dollar can erode returns regardless of underlying stock performance.
- Developed-market growth constraints: Exposure is concentrated in mature economies with slower GDP growth and aging demographics compared to emerging markets, which may limit total return potential over extended periods.
- Fee drag in low-return environments: While IEFA's cost advantage is meaningful, if developed ex-U.S. markets deliver returns below 7–8% annually over your holding period, fees will consume a larger proportion of gains.
Bottom line
If you value simplicity and large-cap European and developed-Asian markets, EFA offers a classic core holding. If you prioritize cost efficiency and are comfortable with small-cap inclusion, IEFA's 0.07% expense ratio and $194B scale make it the more economical choice for the same geographic exposure. Past performance does not guarantee future results, and both funds carry currency risk inherent to international equity holdings.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.