P
Pulsafi

What is an index fund?

Quick answer

An index fund is a mutual fund or ETF that tracks a market index (like the S&P 500 or Total Stock Market). Instead of trying to beat the market, it matches it at very low cost (typically 0.03-0.10% expense ratio). Index funds consistently outperform 80%+ of actively managed funds over 10+ year periods.

More context

An index fund is a mutual fund or ETF that tracks a market index (like the S&P 500 or Total Stock Market). Instead of trying to beat the market, it matches it at very low cost (typically 0.03-0.10% expense ratio). Index funds consistently outperform 80%+ of actively managed funds over 10+ year periods. The exact answer depends on your specific situation — the numbers above are a strong starting point, but the right next step is to plug in your actual figures.

For a deeper analysis, use one of the related tools below — they take your specific income, debt, location, and goals as inputs and produce a tailored answer.

Run your own numbers
Compound Interest Calculator

Related questions

Index fund vs ETF: what's the difference?What are the best index funds for beginners?

More about Investing

What's the right order to invest my money?How much will $10,000 grow to in 20 years?How much will $100,000 grow to in 30 years?How much do I need to invest monthly to get to $1 million?Is it too late to start investing at 40 or 50?Index fund vs ETF: what's the difference?