Compound Interest Forecast
Forecast investment growth with compound interest: contributions, rate and years, with a yearly chart and table.
Growth chart (blue = your money, green = interest earned)
Yearly breakdown
| Year | Start balance | Contributions | Interest | End balance |
|---|
This is only a mathematical projection. It does not include taxes, fees or inflation, and it is not financial advice.
How to use
- Enter your starting amount, how much you will add each month, the expected annual interest rate and the number of years.
- Choose how often interest compounds (monthly is typical for savings accounts and funds).
- Press Calculate forecast to see the final balance, how much of it is your own contributions, and how much is interest.
- The stacked chart shows blue bars for your contributions and green bars for interest earned, so you can see compounding take over.
- Check the what-if row to see what a 1% higher rate would do to the same plan.
Frequently Asked Questions (FAQ)
What does the Compound Interest Forecast tool do?
It forecasts how an investment grows with compound interest. You enter a starting amount, monthly contributions, interest rate, years and compounding frequency, and it shows the final balance, total interest earned, a yearly breakdown table and a chart.
What does the what-if row show?
It repeats the same forecast with the interest rate raised by 1 percent, so you can see how a small rate difference changes the final balance over time.
Which compounding frequencies can I choose?
Monthly, quarterly, half-yearly or yearly.
Does the forecast include taxes, fees or inflation?
No. It is a mathematical projection only, so actual returns will differ. Talk to a qualified advisor before investing.