Small steps can build a big snowball.
What could happen when you invest every month, leave the money alone, and give compounding plenty of time?
Historical illustration ending October 2026 · nominal dollars · dividends reinvested where available
Historical investing calculator
How the snowball grew
Time does the heaviest lifting.
Early on, most of the account is money you saved. Later, the market’s growth can become the bigger part.
Three ideas worth remembering
See what time changes.
The ending value is not just about how much you add. It is also about how long each dollar gets to grow.
| History tested | You contributed | Growth added | Ending value | Ending ÷ contributed |
|---|
This is a history lesson, not a promise.
Stocks can fall sharply and stay down for years. These results use past returns, assume every monthly deposit was made, and ignore taxes and personal circumstances. Scenario 3 adjusts for CPI inflation; Scenarios 1 and 2 remain nominal-dollar illustrations. A real plan should match the investor’s goals, time horizon, and comfort with risk.