ETF vs Mutual Fund: Which Should You Choose
Both can give you diversified exposure to markets — the differences come down to mechanics and fees.
What they have in common
Both ETFs and mutual funds pool money from many investors to buy a basket of underlying assets. Both can be passively indexed or actively managed. Both offer instant diversification.
Trading mechanics
Mutual funds trade once per day at the closing 'net asset value'. ETFs trade throughout the day like stocks. For long-term buy-and-hold investors, this distinction doesn't matter much.
Fees and minimums
Index ETFs often have the lowest expense ratios available, sometimes 0.03–0.10%. Mutual funds often have higher expense ratios and may require minimum investments ($1,000–$3,000). Many brokers offer commission-free trades on both.
Tax efficiency
ETFs are typically more tax-efficient in taxable accounts because of how they handle redemptions. In tax-sheltered accounts (IRA, 401k), this difference disappears.
Which to pick
For taxable brokerage accounts, ETFs are usually slightly better. For retirement accounts, either works. The most important factor is the underlying index and the expense ratio — not the fund structure.
Frequently asked questions
Can I buy fractional shares?
Most major brokers (Fidelity, Schwab, Robinhood) allow fractional shares of ETFs. Mutual funds let you invest any dollar amount by design.
Are all ETFs index funds?
No — some are actively managed. Check the description before assuming low fees.
Which is better for automatic investing?
Mutual funds historically. ETFs have caught up at brokers that support automated ETF purchases.