Educational Tool
How might money grow over time?
Explore how an initial amount, regular contributions, and time may help invested money grow gradually.
Compound Interest workspace
How might money grow over time?
Result
Estimated Future Value
0
After 30 years
Projection chart
How money may grow over time
This chart compares the estimated total value with the amount contributed.
Click a chart point to add an extra contribution for that year.
The chart will separate money added from projected growth.
Supporting Numbers
Total Contributions
0
Investment Growth
0
Time Horizon
30 years
Extra Contributions
Extra Contributions
How It Works
Understanding Compound Interest
When earlier growth becomes part of the next growth base
Compound interest means growth is calculated on the starting amount, new contributions, and earlier accumulated returns. Over time, the base that can grow becomes larger.
This simulation gives a simple view of an initial amount, monthly contributions, annual return, and the time horizon you choose.
A = P (1 + r/n)^(nt)- Starting amount
- The first amount used in the projection.
- Contribution
- Money added regularly along the way.
- Return
- The assumed yearly growth rate.
Why it helps
- It separates money added from accumulated growth.
- It helps compare the effect of time, contributions, and return.
What to keep in mind
- Real returns are not smooth every year.
- The result does not include taxes, fees, risk, or personal circumstances.
Use this result to learn about direction and compare assumptions, not as a forecast or financial advice.
Why This Matters
How to think about this result
The result shows an estimated accumulated value from contributions and compound returns based on your assumptions. Use it to understand direction, not to forecast real returns.
Try different scenarios
Try changing one assumption at a time, such as time horizon, contribution, or return rate, to see which factor changes the projection most.
Key insight
Regular contributions still account for most of the projected value.
Consistency may matter more than return assumptions in this early view.
Questions Worth Exploring
Questions worth exploring
Use these prompts to test how sensitive the projection is to small changes.
Try another scenario
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