ETFs vs. Mutual Funds: What's the Difference?
How ETFs and mutual funds differ in trading, costs and taxes, and how to choose the right one for your account.
ETFs and mutual funds both let you buy a diversified basket of investments in a single purchase, and they can even track the exact same index. So what's the difference, and which should you choose? Here's a plain-English comparison of how they trade, what they cost and how they're taxed.
What they have in common
Both exchange-traded funds (ETFs) and mutual funds pool money from many investors to buy a portfolio of stocks, bonds or other assets. Each share you own represents a slice of that whole portfolio. Both can be:
- Index funds that passively track a market index like the S&P 500
- Actively managed funds where managers try to beat the market
- Focused on stocks, bonds, a specific sector, or a mix
The differences are mostly in how you buy and sell them and how they're structured.
Side-by-side comparison
| Feature | ETFs | Mutual funds |
|---|---|---|
| How they trade | On a stock exchange throughout the day, like a stock | Once per day, at the closing price (net asset value, or NAV) |
| Minimum investment | The price of one share, or less with fractional shares | Often a set minimum (some funds have none, others require $1,000+) |
| Automatic investing | Depends on your brokerage | Easy to set up fixed-dollar automatic investments |
| Typical costs | Often very low expense ratios; commission-free trading at many brokerages | Index mutual funds can be very low-cost; some active funds charge higher fees or sales loads |
| Tax efficiency (taxable accounts) | Generally more tax-efficient | May distribute more capital gains |
How trading differs
ETFs trade on an exchange whenever the market is open. Their price moves throughout the day, and you can place different order types, such as limit orders. You'll see a small bid-ask spread (the difference between buying and selling prices), which is usually tiny for large, popular ETFs.
Mutual funds are bought and sold directly through the fund company or your brokerage, and every order placed during the day gets the same end-of-day price. That makes them simple, and it removes the temptation to trade based on intraday price moves.
For long-term investors, intraday trading isn't an advantage; it's mostly a distraction. What matters more is costs, taxes and consistency.
Costs: what to compare
- Expense ratio: the yearly fee as a percentage of your investment. Broad index ETFs and index mutual funds can both be very cheap.
- Sales loads: some mutual funds charge a commission when you buy (front-end load) or sell (back-end load). Many investors prefer no-load funds.
- Trading fees: many brokerages offer commission-free ETF trades and free purchases of their own mutual funds, but may charge for other companies' funds.
- Bid-ask spread: a small hidden cost for ETFs, usually minimal for large funds.
Small fee differences compound over decades. See our beginner's guide to index funds for an example.
Taxes: why ETFs often have an edge
In a regular taxable brokerage account, funds can pass capital gains distributions to shareholders when they sell investments at a profit, and you may owe tax on them even if you didn't sell anything yourself.
Because of how ETF shares are created and redeemed, ETFs often distribute fewer capital gains than comparable mutual funds, making them generally more tax-efficient. Inside tax-advantaged accounts like a 401(k) or IRA, this difference doesn't matter, because gains aren't taxed year to year.
Which should you choose?
ETFs may suit you if you:
- Invest in a regular taxable brokerage account and want tax efficiency
- Want to start with a small amount (fractional shares)
- Want to buy funds from different companies at one brokerage without fees
Mutual funds may suit you if you:
- Want to invest exact dollar amounts automatically every month
- Invest through a workplace plan, where mutual funds are often the main options
- Prefer not to think about intraday prices
For many long-term investors, a low-cost index fund in either form is an excellent choice. The fund's strategy, costs and your consistency matter more than the wrapper.
Common mistakes to avoid
- Trading ETFs too often because it's easy. Frequent trading tends to hurt returns.
- Ignoring fees, especially sales loads and high expense ratios.
- Buying overlapping funds, such as three different funds that all hold the same large companies.
- Choosing complex or leveraged ETFs without understanding them. These are designed for short-term trading, not long-term investing.
Bottom line: ETFs trade like stocks and are usually more tax-efficient; mutual funds trade once a day and make automatic investing easy. Both can be excellent, low-cost choices. Pick the one that fits your account and habits, keep fees low and stay invested for the long run.
Frequently asked questions
Are ETFs better than mutual funds?
Neither is always better. ETFs are often more tax-efficient in taxable accounts and easy to buy in small amounts, while mutual funds make automatic fixed-dollar investing simple. Low-cost index versions of both can be excellent.
Can ETFs and mutual funds track the same index?
Yes. Many fund companies offer both an ETF and a mutual fund version of the same index strategy.
Do ETFs have minimum investments?
Generally you only need the price of one share, and many brokerages offer fractional shares, so you can start with a small amount.
Why are ETFs more tax-efficient?
Because of how ETF shares are created and redeemed, ETFs typically distribute fewer capital gains to shareholders than comparable mutual funds.
Disclaimer: This article is for general educational purposes only and isn't personalised financial, tax or legal advice. Consider speaking with a qualified professional about your situation. Read our full disclaimer.