ETF vs Mutual Fund: Fees, Taxes and Trading Compared

The main ETF vs mutual fund difference is how you buy and sell them. An ETF (exchange-traded fund) trades on a stock exchange all day like a share, while a mutual fund is bought from the fund company at one price calculated after the market closes. Both pool your money into a diversified portfolio, but ETFs tend to have lower minimums and, in US taxable accounts, pass on fewer capital gains taxes.

That does not make ETFs automatically better. A low-cost index mutual fund can beat a pricey ETF, and mutual funds still make automatic monthly investing easy and dominate 401(k) plans. What matters most is the fund’s total cost, what it holds and the account you hold it in.

This guide compares the two on structure, trading, minimums, fees and taxes, then works through a 20-year example showing how fee and tax drag add up in dollars.

What is an ETF vs a mutual fund?

A mutual fund pools money from many investors and buys a portfolio of stocks, bonds or other assets. You buy shares directly from the fund (or through a broker), and when you sell, the fund buys your shares back. Every order placed during the day gets the same price: the net asset value (NAV), which is the value of the fund’s holdings minus liabilities, divided by shares outstanding.

An exchange-traded fund (ETF) also holds a diversified portfolio, but its shares are listed on an exchange. You buy them from other investors through a brokerage account at whatever the market price is at that moment. The first US ETF, the SPDR S&P 500 ETF Trust (SPY), launched in January 1993. Our guide to what an ETF is and how it works explains the mechanics in more detail.

Both are regulated in the US as investment companies under the Investment Company Act of 1940 (with a few exceptions such as commodity ETFs), both must publish a prospectus, and both can be index-tracking or actively managed.

ETF vs mutual fund comparison table

How they are structured

Mutual funds: the fund buys and sells with you

When money flows into a mutual fund, the fund issues new shares and invests the cash. When investors redeem, the fund pays them cash, and if it does not have enough on hand it must sell holdings. Those sales can realize capital gains, which the fund must then pass on to all remaining shareholders. That link between other investors’ selling and your tax bill is the core structural weakness of mutual funds in taxable accounts.

ETFs: trading happens between investors

Most ETF trading is investor-to-investor on the exchange; the fund itself is not involved. New ETF shares are created, and old ones removed, only in large blocks by big financial firms called authorized participants. They typically swap a basket of the underlying securities for ETF shares, or the reverse, in a process called in-kind creation and redemption. That process keeps the ETF’s market price close to its NAV and lets the fund hand out low-cost-basis shares without selling them, which, as explained below, matters for taxes.

Funds that are both

Some fund families offer an ETF as a share class of a mutual fund, a structure Vanguard used under a patent until 2023. In November 2025 the SEC granted Dimensional Fund Advisors permission to add ETF share classes to its mutual funds, and many other managers have applied for similar relief, so check the prospectus to see how any fund is set up.

Trading, pricing and minimums

With a mutual fund, you place an order for a dollar amount, such as $500, and it is filled at the next NAV calculated after the market closes, usually at 4:00 p.m. Eastern Time. Orders placed after the cutoff get the next day’s price. You never know the exact price when you click “buy,” but everyone pays the same NAV and there is no spread.

With an ETF, you see a live price, can use a limit order to set the maximum you will pay, and can trade at any time the market is open. The cost is the bid-ask spread, the gap between the highest price buyers are offering and the lowest price sellers will accept. For large, heavily traded ETFs it is often a cent or two; for small or niche ETFs it can be much wider, and the price can drift away from NAV in fast markets.

For long-term investors, intraday trading is rarely an advantage. If anything, it tempts people to trade too often. Both ETF and mutual fund trades in US brokerage accounts now generally settle within one business day.

Minimums and automatic investing

Many mutual funds require a first investment, commonly $1,000 to $3,000, though several large fund companies now offer index funds with no minimum. Once you are in, you can set up automatic investments of any dollar amount, such as $200 every payday, and the fund buys fractional shares for you.

ETFs have no fund-imposed minimum beyond the price of one share. Brokers that offer fractional shares let you buy as little as $1 or $5, and more of them now let you schedule recurring ETF purchases. If yours does not, a mutual fund may still be the easier way to automate. Our guide on index funds vs ETFs compares these practical details for index investors.

Mutual fund fees and ETF costs

The biggest cost for most fund investors is the expense ratio, the annual fee deducted from the fund’s assets, expressed as a percentage. You never see a bill; it simply lowers your return. A 0.50% expense ratio costs $50 a year for every $10,000 invested.

According to the Investment Company Institute (ICI), in 2025 the asset-weighted average expense ratio was 0.05% for index equity mutual funds, 0.14% for index equity ETFs and 0.64% for actively managed equity mutual funds. In other words, the gap between index and active management is far bigger than the gap between ETFs and mutual funds.

Mutual fund fees to watch

• Sales loads: A front-end load is a commission taken when you buy; a back-end load (contingent deferred sales charge) is taken when you sell. FINRA rules cap sales charges at 8.5%, and front loads around 5% are still common on broker-sold share classes. A 5% front load on $10,000 means only $9,500 is invested.
• 12b-1 fees: Ongoing marketing and distribution fees of up to 1% a year, included in the expense ratio.
• Transaction fees: Some brokers charge to buy funds from other fund families.
• Redemption fees: Some funds charge up to 2% if you sell within a short period, to discourage rapid trading.

ETF costs to watch

• Bid-ask spread: Small on popular funds, larger on thinly traded ones.
• Premiums and discounts: The market price can be slightly above or below NAV.
• Commissions: Most major US brokers charge $0 for online ETF trades, but check yours.

You can compare the full costs of any fund with FINRA’s free Fund Analyzer tool.

Taxes: capital gains distributions in the US

This section applies to US investors holding funds in taxable brokerage accounts. Inside an IRA, 401(k) or other tax-advantaged account, distributions are not taxed when paid, so the ETF tax edge mostly disappears. Rules differ in other countries; in the UK, for example, most people hold funds inside an ISA.

US funds must distribute nearly all of their net realized capital gains to shareholders each year, usually in December. You owe tax on those capital gains distributions even if you reinvest them and even if you have not sold a single share. Long-term gains distributions are taxed at 0%, 15% or 20% depending on your income, and short-term gains are taxed as ordinary income.

Mutual funds generate these gains when they sell holdings, either to meet redemptions or because an active manager trades. ETFs can usually avoid them, because in-kind redemptions let the fund pass out its lowest-cost shares to authorized participants without realizing a taxable gain. As a result, most broad stock ETFs distribute no capital gains in a typical year, while many active mutual funds do. Both types still pass on dividends, which are taxable either way.

Worked example: fee and tax drag over 20 years

The example also shows that the wrapper is not the whole story. An index mutual fund at 0.05% with no distributions would perform almost exactly like Fund A.

Active vs passive funds

Both ETFs and mutual funds come in two styles. Passive (index) funds simply track an index such as the S&P 500, which keeps costs and trading low. Active funds employ managers who pick investments trying to beat a benchmark, which costs more and creates more trading.

The track record of active management is weak after fees. S&P Dow Jones Indices’ SPIVA scorecard found that 79% of actively managed US large-cap stock funds underperformed the S&P 500 in 2025, and over periods of 15 years or more, recent scorecards have put the share at roughly nine in ten. A few active funds do outperform, but identifying them in advance is hard.

Historically, most ETFs were passive and most mutual fund assets were active, which is part of why ETFs gained a low-cost reputation. Today that line is blurring: active ETFs are the fastest-growing part of the ETF market, and index mutual funds are among the cheapest funds available. If you choose passive investing, our guide to investing in an S&P 500 index fund walks through the steps.

Index fund vs ETF vs mutual fund: which fits you?

These three terms overlap. An index fund describes a strategy (tracking an index) and can be either a mutual fund or an ETF. So the real choices are passive or active, and ETF or mutual fund wrapper.

• Investing through a 401(k): You will likely choose from mutual funds or collective trusts. Pick the lowest-cost broad index options available.
• Investing in an IRA: Taxes on distributions do not apply, so choose either wrapper based on cost and convenience. Our guide to Roth vs traditional IRAs explains the account choice.
• Investing in a US taxable brokerage account: ETFs usually have the tax edge, especially compared with active mutual funds.
• Automating small monthly amounts: A no-minimum index mutual fund, or an ETF at a broker with fractional shares and recurring buys.
• Wanting intraday control or limit orders: ETFs.

Bottom line

ETFs and mutual funds both offer diversified, professionally managed portfolios; the main differences are how they trade and how they are taxed. In a US taxable account, ETFs’ in-kind structure usually means fewer capital gains distributions, while mutual funds make automatic investing easy and remain the default in workplace plans. In practice, the expense ratio and the choice between active and passive management matter more than the wrapper. Check a fund’s total costs and distribution history before you buy. For more guides, visit our stocks and ETFs hub.

Sources

• Investor.gov (SEC) – Mutual Funds
• Investor.gov (SEC) – Exchange-Traded Funds (ETFs)
• Investor.gov (SEC) – Mutual Fund and ETF Fees and Expenses
• ICI – Mutual Fund and ETF Fees Remained Near Historic Lows in 2025
• IRS – Topic No. 409, Capital Gains and Losses
• IRS – Publication 550, Investment Income and Expenses
• FINRA – Fund Analyzer