Savings · 10-year review

S&P 500 vs. high-yield savings: the last decade in review

What would $10,000 be worth today if you’d put it in the market instead of a savings account, a decade ago? We ran the real numbers.

Ten years ago, on August 29, 2016, $10,000 sat at a fork in the road. Put it in an S&P 500 index fund like SPY, and by August 28, 2026 it would have grown to $35,369 — a 253.7% total return. Park the same $10,000 in a savings account paying a steady 4.5% annually, and it would have grown to $15,527 — a 55.3% return.

That’s a gap of nearly $20,000 on the same starting amount, over the same ten years. It’s the kind of number that makes the case for investing look obvious in hindsight — but the ten-year window matters more than it looks.

Why the timeframe changes the story

A decade is long enough to smooth over most of the market’s worst days, but it isn’t a guarantee. Investors who needed their money back in a downturn — rather than ten years later — would have seen a very different number. Savings accounts don’t offer 253% returns, but they also don’t lose a third of their value in a bad year.

The comparison above uses a fixed 4.5% savings rate for the full decade, which is higher than what savings accounts actually paid for most of the 2016–2021 stretch (closer to 0.5%–1%) before rates rose sharply in 2022–2023. A more realistic blended savings return over the full ten years would land lower than $15,527 — making the investing gap even larger in practice.

Try your own numbers

These figures use a fixed $10,000 starting amount and today’s default 10-year window. Your own timeframe, contribution amount, or savings rate will produce a different result — run it yourself with the calculator below.

Run your own savings vs. S&P 500 comparison →

Figures shown reflect historical closing prices only and exclude dividends, fees, taxes, and reinvestment. Past performance does not guarantee future results. This article is for educational purposes only and is not personalized financial or investment advice.