What If You Invested Your Summer Bonus in the S&P 500 Every Year Instead of Spending It?
Bonus checks tend to land in June and July, right as vacation season peaks. That timing creates a familiar pull: book the trip, or quietly invest the money and pretend it never showed up. What if, every year for 20 years, you took a $2,500 summer bonus and put it into the S&P 500 instead of spending it?
Twenty years, $2,500 each, $50,000 contributed in total. As of the latest monthly close it would be worth approximately $248,918, a gain of +397.8%, or about $198,918 in profit. Roughly five times what you put in, out of a check most people spend without thinking twice.
Every Summer Bonus, Year by Year
| Year | SPY (June close) | $2,500 today |
|---|---|---|
| 2006 | $87.97 | $21,504 |
| 2007 | $105.90 | $17,864 |
| 2008 | $91.84 | $20,598 |
| 2009 | $67.72 | $27,935 |
| 2010 | $77.55 | $24,394 |
| 2011 | $101.12 | $18,708 |
| 2012 | $106.48 | $17,766 |
| 2013 | $128.29 | $14,746 |
| 2014 | $159.68 | $11,847 |
| 2015 | $171.23 | $11,048 |
| 2016 | $177.97 | $10,630 |
| 2017 | $209.67 | $9,023 |
| 2018 | $239.73 | $7,891 |
| 2019 | $263.94 | $7,167 |
| 2020 | $283.46 | $6,674 |
| 2021 | $399.80 | $4,732 |
| 2022 | $356.98 | $5,299 |
| 2023 | $426.57 | $4,435 |
| 2024 | $531.29 | $3,561 |
| 2025 | $610.85 | $3,097 |
| Total | $50,000 in | $248,918 |
A note on the method. There is no single date everyone gets a bonus, so this uses the June monthly close each year as the stand-in, the same data this site runs on, and assumes a flat $2,500 bonus every year. A real bonus would vary, but the mechanics of investing it once a year do not.
The First Few Bonuses Did the Heavy Lifting
Look at how top-heavy the right column is. The four bonuses from 2006 through 2009 are worth about $87,901 today, roughly 35% of the entire balance, off just a fifth of the money. The single best one was the 2009 bonus invested at $67.72, made in the depths of the financial crisis, now worth $27,935 on its own. The most recent bonuses have barely moved because they have had no time to compound. The lesson is the same one compounding always teaches: the dollars you invest earliest matter far more than the ones you add late.
The Dividend Caveat
These are price-only numbers and leave out dividends. The S&P 500 has paid roughly 1.5% to 2% a year across this period, and an investor who reinvested those payouts would have meaningfully more than $248,918 today. So the real-world result for someone holding a total-return fund was better than the table shows, not worse.
But You Would Rather Have the Vacations
Fair. This is not an argument that you should never enjoy a bonus. It is a look at the price of always spending it. The honest middle is that you do not have to pick one. Invest half of a $2,500 bonus every year and spend the rest, and the invested half still grows to about $124,000 over the same 20 years while you take the trips with the other half. The expensive habit is not enjoying your money. It is reflexively spending 100% of every windfall and ending up with nothing to show for two decades of bonuses.
The Bottom Line
Investing a $2,500 summer bonus in the S&P 500 every year for 20 years would have turned $50,000 into about $248,918, and more with dividends reinvested. No timing, no stock picking, just a decision to treat one predictable check a year as savings instead of spending money. Past performance does not guarantee the next 20 years, but the habit has been remarkably durable.
For the same idea anchored to a holiday instead of a bonus, see what buying the S&P 500 every Fourth of July for 20 years did, or the monthly version in $500 a month for 30 years. You can also model your own contribution plan in the calculator.