What If You Invested
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What-If you invested in S&P 500? Compare its historical return with savings over any period
Calculator inputs
Set a savings rate once to compare against your investment
Savings Account
- Interest Return
- Interest Earned
- Investment Duration
- Annual Interest Rate
S&P 500
- Market Return
- Market Earned
- Investment Duration
- Market CAGR
Savings vs S&P 500: Comparison
The Gap
Growth Over Time
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The Basics: Savings Accounts vs. the S&P 500
A savings account is a bank deposit that pays interest and is typically government-insured, making it one of the lowest-risk places to hold cash -- high-yield accounts from online banks often pay noticeably more than average. The S&P 500 (ticker GSPC) is a stock market index tracking 500 of the largest U.S. companies, widely used as a benchmark for the market and typically accessed through low-cost index funds or ETFs rather than buying all 500 companies individually.
Savings vs. Investing: The Core Trade-Off
Savings accounts trade higher potential returns for stability and easy access to your money. Investing in the stock market trades that stability for the potential of significantly higher long-term returns, along with the possibility of short-term losses. Neither option is universally "better"; the right choice depends on your time horizon, how soon you may need the money, and your comfort with seeing your balance fluctuate from day to day.
Which One Fits You?
A savings account tends to make more sense for money you may need on short notice -- an emergency fund, a near-term down payment, or any goal where a temporary dip in value would be a real problem. Investing tends to make more sense for long-term goals five or more years away, like retirement, where there is time to ride out short-term declines. Historically the U.S. stock market has delivered stronger average annual returns than savings accounts over long periods, though with year-to-year volatility a savings account does not have.
Historical Performance Context
Over long stretches of history, the S&P 500 has generally outperformed savings accounts and other cash-equivalent instruments on an average annual basis, largely because equities carry more risk and investors are compensated for bearing it. That said, past performance over any historical window, including the one you selected above, does not predict future results, and shorter windows in particular can show savings outperforming stocks or vice versa purely due to timing.
Important Investment Risks
Unlike a savings account, money invested in the stock market is not insured and can lose value, including the possibility of losing a significant portion of your principal during a market downturn. The calculations on this page use historical closing prices only and exclude dividends, trading fees, taxes, and any recurring contributions, so real-world results from an actual brokerage account will differ. This tool is for educational purposes only and is not personalized financial, investment, or tax advice.
It depends on your timeline and risk tolerance. Money you need within the next few years is generally better kept in a savings account, while money you will not need for five or more years may benefit from the higher long-term growth potential of investing, provided you are comfortable with short-term market swings.
No. While the S&P 500 has often outperformed savings accounts over long historical periods on average, there is no guarantee for any specific time frame. Over shorter periods, or during market downturns, a savings account can outperform the stock market.
Yes. The investing side of the calculation uses actual historical closing prices for the S&P 500 (ticker ^GSPC) for the exact start and end dates you select. 'Closing price' refers to the officially reported price of a security at the close of regular trading on its primary exchange (4:00 PM Eastern Time for U.S. markets), and does not reflect after-hours or extended-trading activity.
U.S. stock markets are closed on Saturdays and Sundays, so no closing price exists for those days. The calculator requires a business day (Monday through Friday) so the S&P 500 comparison can use a real, recorded closing price.
No. This calculator uses historical S&P 500 index closing values and does not include dividends, dividend reinvestment, trading fees, or taxes. Including dividends would generally increase the total return shown for the investing side.
Savings growth is calculated using annual compound interest with the formula Final Value = Principal × (1 + Rate)^Years, where Years is the exact time span between your selected start and end dates. The investing CAGR, or compound annual growth rate, is calculated the same way but solved in reverse: CAGR equals the Final Value divided by the Principal, raised to the power of one divided by Years, minus 1. This puts both sides on the same annualized basis for an easy comparison.
Toggling this sets the comparison side to 0% growth, representing literal idle cash instead of a savings account earning interest -- useful if you want to see the raw effect of investing versus doing nothing with the money.
This calculator is provided for educational purposes only and does not constitute financial, investment, or tax advice. Historical performance does not guarantee future results.