ETFs and index funds are two of the most recommended investment vehicles for beginners — and they’re often confused with each other. The honest answer is they’re very similar, the differences are minor for most investors, and either one is a great choice. Here’s what you need to know.
What they have in common
Both ETFs and index funds are investment funds that hold a collection of assets — typically stocks that track an index like the S&P 500 or the total US stock market. Both give you instant diversification. Both have low fees compared to actively managed funds. Both are considered passive investing.
How they’re different
- How they trade. ETFs trade on stock exchanges throughout the day like individual stocks — you can buy or sell at any moment during market hours at the current price. Index funds (mutual funds) only trade once per day after the market closes, at the end-of-day price.
- Minimum investment. ETFs can often be purchased for as little as the price of one share (or even fractional shares at most brokerages). Some index mutual funds have minimum investment requirements of $1,000 or more — though many now have no minimums.
- Automatic investing. Index mutual funds are easier to automate — you can set up an automatic investment of exactly $200/month. With ETFs it’s trickier since share prices fluctuate (though fractional shares at Fidelity and Schwab have largely solved this).
Which should you use
For most beginners: it genuinely doesn’t matter much. Both VTI (Vanguard Total Stock Market ETF) and FZROX (Fidelity Zero Total Market Index Fund) track the same underlying market, both have near-zero fees, and both will deliver essentially the same long-term returns.
If you want to automate investing and forget about it — index mutual fund. If you want to be able to buy with small amounts and see real-time prices — ETF. Pick one, stay consistent, don’t overthink it.