ESG Fund Performance vs. Standard Index Funds
ESG vs. standard index fund performance comparison over different periods
| Period | ESG Fund Average | Standard Index Average | Relative Performance |
|---|---|---|---|
| 2018 to 2022 | +8.5% annualized | +7.8% annualized | ESG slightly ahead |
| 2022 (energy surge) | -24% average | -18% (S&P 500) | ESG behind (excluded energy outperformed) |
| 2023 to 2024 | +20%+ average | +21%+ average | Roughly parity |
| Long run 10+ years | Similar to benchmark | Benchmark | No consistent difference |
What the Research Says About ESG Returns
Academic research on ESG returns is mixed: some studies show modest outperformance, others underperformance, most show no statistically significant long-term difference. ESG funds that exclude fossil fuels, weapons, and tobacco tend to do better when technology outperforms (2015 to 2021) and worse when energy outperforms (2022). The key finding: ESG funds do not systematically outperform or underperform over complete market cycles, but they do have different factor exposures that create period-specific performance variation.
ESG index funds typically have slightly higher expense ratios than equivalent non-ESG funds. Vanguard ESG US Stock ETF (ESGV): 0.09% vs. Vanguard Total Market (VTI): 0.03%. iShares MSCI KLD 400 Social (DSI): 0.25% vs. iShares Core S&P 500 (IVV): 0.03%. The fee premium for ESG is shrinking but real. Over 30 years, a 0.20% fee difference on $200,000 costs approximately $70,000 in foregone compounding.
How to Evaluate ESG in Your Investment Calculator
If using ESG funds: reduce your expected return assumption by 0.1% to 0.3% to account for higher expense ratios and potential screening costs. Use the same long-run equity return framework (7% nominal) but apply the expense ratio reduction. Comparing 7.7% for standard index vs. 7.5% for ESG shows the long-term difference is real but modest relative to the values alignment benefit some investors prioritize.
The Best ESG Index Funds in 2025
Top ESG index funds in 2025 by provider, expense ratio, and key exclusions
| Fund | Provider | Category | Expense Ratio | Key Exclusions |
|---|---|---|---|---|
| ESGV | Vanguard | U.S. ESG stocks | 0.09% | Adult entertainment, weapons, tobacco, fossil fuels |
| VSGX | Vanguard | International ESG | 0.12% | Same exclusions globally |
| ESGU | iShares | U.S. ESG stocks | 0.15% | ESG-screened U.S. stocks |
| SUSL | iShares | U.S. ESG leaders | 0.10% | Bottom-scoring ESG companies excluded |
| FITLX | Fidelity | U.S. sustainability | 0.11% | ESG-screened with Fidelity methodology |
Building a Complete ESG Portfolio
A complete ESG portfolio mirrors the three-fund portfolio concept with ESG screening: Vanguard ESG US Stock ETF (ESGV) for domestic equity, Vanguard ESG International Stock ETF (VSGX) for international equity, and Vanguard ESG U.S. Corporate Bond ETF (VCEB) for fixed income. Together these three funds provide broad global diversification with ESG screening at a blended expense ratio of approximately 0.10% to 0.12%.
Compare ESG vs. Standard Index Fund Returns
Enter 7.7% for standard index and 7.5% for ESG to see the long-term difference in dollar terms.