ETF vs Mutual Fund: Key Differences and Which to Choose

Both ETFs and mutual funds let you own hundreds of stocks in a single purchase. But they differ in how they trade, their costs, and their tax efficiency. Understanding these differences helps you choose the right vehicle for your goals.

What Is an ETF?

An ETF (Exchange-Traded Fund) is a basket of securities that trades on a stock exchange throughout the day, just like a single stock. You buy and sell ETFs at market prices using a brokerage account. Most ETFs passively track an index — like the S&P 500 — and charge very low fees.

What Is a Mutual Fund?

A mutual fund pools money from many investors and is managed by a fund company. Unlike ETFs, mutual funds are priced once per day after markets close. You buy and sell directly through the fund company at that day's price. Mutual funds can be actively managed or index-based.

Key Differences at a Glance

• Trading: ETFs trade intraday on an exchange; mutual funds settle at end-of-day NAV
• Minimums: ETFs require just the price of one share (often $50–$500); many mutual funds require $1,000–$3,000 minimum
• Costs: ETFs typically have lower expense ratios; active mutual funds can charge 0.5–1.5%
• Tax efficiency: ETFs are generally more tax-efficient due to how they handle redemptions
• Automation: Mutual funds allow automatic monthly contributions easily; ETFs require manual purchases at most brokers

When to Choose ETFs

ETFs are ideal if you want low costs, tax efficiency, and flexibility to invest any dollar amount. They're best for taxable brokerage accounts where tax efficiency matters. Most new investors do well starting with a single S&P 500 ETF like VOO or IVV.

When to Choose Mutual Funds

Mutual funds are convenient for automatic contributions and are often the only option inside 401(k) plans. Index mutual funds (like Fidelity's FXAIX or Vanguard's VFIAX) offer the same low costs as index ETFs with easy automation.