ETF vs Mutual Fund Calculator

ETF vs Mutual Fund: Key Differences Explained

An ETF (Exchange-Traded Fund) is a basket of securities that trades on a stock exchange like a single share, typically tracking an index. A mutual fund pools investor money to buy a portfolio of assets, usually actively managed by a fund manager. The critical difference for long-term investors is cost: the average US equity ETF charges around 0.16% per year in fees, while the average actively managed mutual fund charges about 0.66% — a difference that compounds dramatically over decades.

Beyond fees, ETFs offer intraday trading, tax efficiency in the US (lower capital gains distributions), and transparency with daily holdings disclosure. Mutual funds price once per day at NAV, may be more accessible for automatic investing with no minimum trade size constraints, and some offer active management that can theoretically outperform the market.

How Expense Ratios Impact Long-Term Returns

The compounding effect of fees is often underestimated. A 1% annual expense ratio on a $100,000 portfolio earning 8% gross returns costs approximately $48,000 over 20 years compared to a 0.1% ETF equivalent. This is because fees reduce the principal that compounds — every dollar in fees today means you lose not just that dollar but all its future growth. The calculator above shows this exact difference for your specific numbers.

Industry data shows that approximately 85-90% of actively managed large-cap US mutual funds underperform their benchmark index over 15-year periods (SPIVA Scorecard, S&P Global). This evidence, combined with the fee differential, is why low-cost index ETFs have become the dominant recommendation for long-term investors.

When Mutual Funds Still Make Sense

Despite the cost disadvantage, mutual funds remain appropriate in certain situations: employer-sponsored 401(k) or superannuation plans often only offer mutual funds; some fixed-income or niche markets lack efficient ETF equivalents; automatic investment plans (no set amounts needed) work better with mutual funds; and some active managers in small-cap or emerging markets have demonstrated persistent skill. The key is understanding the fee you're paying and whether the potential for active management to outperform justifies that cost.

Choosing the Right Expense Ratio

For broad market exposure, a total market ETF typically charges 0.03-0.15% annually. Sector or thematic ETFs charge 0.20-0.60%. Actively managed ETFs charge 0.50-1.20%. Passive mutual funds (index funds) charge 0.03-0.50%. Actively managed mutual funds charge 0.50-2.0%. Use the calculator above to model your specific options — small differences in the expense ratio create large differences in outcomes over 20-30 year investment horizons.