Mutual funds and exchange-traded funds are two of the most popular ways to invest, and they have a lot in common, which is why many people are unsure how they differ. Understanding the distinctions helps you choose the right tool for your goals. This guide from The Finance Reveal explains the difference between a mutual fund and an ETF, part of our Investing section. This is general education, not investment advice, and investing involves risk, including possible loss of principal.

What They Have in Common

Both mutual funds and exchange-traded funds, or ETFs, are pooled investments: they gather money from many investors to buy a basket of holdings like stocks or bonds, giving you instant diversification through a single purchase. Instead of buying dozens of individual securities yourself, you buy one fund and gain exposure to everything it holds. Both come in many varieties, including funds that track an index and funds that are actively managed, and both are widely used by everyday investors to build diversified portfolios, the approach our guide to index funds and ETFs explores.

Because they share this core structure, the choice between them is often less about what they invest in and more about how they are bought, sold, and managed. In fact, you can find a mutual fund and an ETF that track the very same index and hold nearly identical investments. The differences that matter are mostly practical, involving trading, minimums, and certain costs, rather than fundamental differences in what you own.

The Key Differences

The main distinctions come down to how each is traded and structured. The table below summarizes them.

The most visible difference is how they trade. An ETF trades on an exchange like a stock, so you can buy and sell it throughout the trading day at a live market price that fluctuates. A mutual fund, by contrast, is bought and sold only once per day, after the market closes, at a price based on the value of its holdings at day’s end. Mutual funds often have minimum investment amounts to get started, while an ETF can typically be bought for the price of a single share, or even a fraction of one where fractional shares are offered, which can make ETFs more accessible for beginners. ETFs are also frequently more tax-efficient in taxable accounts due to how they are structured, though this matters less in tax-advantaged retirement accounts. Both can have low costs, especially index versions, but it is always worth checking each fund’s expense ratio, the concept our guide to asset allocation assumes you keep an eye on.

Which One Is Right for You

For most long-term investors, the similarities matter more than the differences, and either can be an excellent choice; what counts most is that the fund is well-diversified and low-cost. That said, some practical preferences can guide the decision. If you value the ability to trade during the day, want to start with a small amount through a single share, or prioritize tax efficiency in a taxable account, an ETF may suit you. If you prefer to invest set dollar amounts automatically on a schedule, mutual funds can make that especially easy, since many allow automatic investments of specific amounts, which is convenient for steady, hands-off investing.

In practice, many investors use both, choosing whichever format fits a given account or goal. The key is not to get overly caught up in the mutual-fund-versus-ETF debate, but to focus on the fund’s diversification, costs, and how it fits your overall plan. The essential message is that mutual funds and ETFs are both pooled, diversified investments, and their differences are mainly practical: ETFs trade throughout the day like stocks and are often more tax-efficient and accessible per share, while mutual funds trade once daily and can make automatic investing simple. Either can serve you well when it is low-cost and well-diversified, so choose based on how you want to invest. For related basics, see our guide to what to know before you start investing, and explore the full Investing section.

Frequently Asked Questions

What is the difference between a mutual fund and an ETF?

Both are pooled investments that hold a diversified basket of securities, but they differ mainly in how they trade and are structured. An ETF trades on an exchange throughout the day at a live price, like a stock, while a mutual fund trades once per day after the market closes. ETFs can often be bought for the price of one share and tend to be more tax-efficient in taxable accounts, while mutual funds may have minimums but make automatic investing easy.

Is an ETF better than a mutual fund?

Neither is universally better; the right choice depends on your preferences and situation. ETFs offer intraday trading, often lower entry cost per share, and greater tax efficiency in taxable accounts. Mutual funds can make automatic, scheduled investing of set dollar amounts especially easy. For most long-term investors, what matters most is that the fund is well-diversified and low-cost. Many people successfully use both formats depending on the account and goal.

Are mutual funds and ETFs taxed differently?

They can be. ETFs are often more tax-efficient in taxable accounts due to how they are structured, which can mean fewer taxable events passed on to investors compared to some mutual funds. However, this difference matters much less inside tax-advantaged retirement accounts, where taxes are handled differently. As always, tax situations vary, so it is worth understanding how a specific fund and account type affect your taxes, or consulting a professional.

Can I invest small amounts in both?

Often, yes, but the approach differs. An ETF can typically be bought for the price of a single share, or a fraction of one where fractional shares are available, making small purchases easy. Mutual funds sometimes have minimum initial investments, but many allow automatic investing of set dollar amounts on a schedule, which is convenient for steady contributions. Both can accommodate smaller investors, so consider which format matches how you prefer to invest.

The Bottom Line

Mutual funds and exchange-traded funds are both pooled investments that gather money from many investors to buy a diversified basket of holdings, giving you broad exposure through a single purchase, and both come in index and actively managed varieties. Because they share this core structure, the choice between them is mostly practical rather than fundamental; in fact, a mutual fund and an ETF can track the same index and hold nearly identical investments. The key differences involve how they trade and are structured: an ETF trades on an exchange throughout the day at a live price like a stock, while a mutual fund trades once daily after the close; ETFs can often be bought for the price of a single share and tend to be more tax-efficient in taxable accounts, while mutual funds may have minimums but make automatic, scheduled investing especially easy. For most long-term investors, the similarities outweigh the differences, and either can be an excellent choice as long as it is well-diversified and low-cost. If you value intraday trading, low per-share entry, or tax efficiency, an ETF may fit; if you prefer automatic investing of set amounts, a mutual fund can be ideal, and many investors use both. The key is to focus on diversification, costs, and fit with your plan rather than the label. For related guides, see our articles on index funds and ETFs, asset allocation, and what to know before you start investing, and explore the full Investing section. This article is general education, not personalized investment advice, and investing involves risk, including possible loss of principal.