Compound interest calculator
What a steady return actually becomes
Project a starting balance forward at a chosen annual return, with or without contributions, and see the growth year by year.
- Ending balance
- $21,589.25
- Growth on contributions
- $11,589.25
| Year | Balance |
|---|---|
| 1 | $10,800 |
| 2 | $11,664 |
| 3 | $12,597.12 |
| 4 | $13,604.89 |
| 5 | $14,693.28 |
| 6 | $15,868.74 |
| 7 | $17,138.24 |
| 8 | $18,509.3 |
| 9 | $19,990.05 |
| 10 | $21,589.25 |
What the inputs mean
- Starting balance
- Capital invested today.
- Annual return
- Compounded yearly rate.
- Years
- Length of the projection.
- Added per year
- Contribution made at the end of each year.
Formula
Worked example
$10,000 at 8% for 10 years, no contributions → $21,589.
Questions people ask
Is this the same as CAGR?
It is the inverse. This grows a balance from a known rate; the CAGR calculator derives the rate from a known start and end value.
Limitations
Every result here is arithmetic on the numbers you enter. It carries no view on any specific security, assumes returns are steady when real returns are not, and ignores taxes, slippage and commissions. Use it to size and sanity-check, not to forecast.
Now run it on a real ticker
Score any name free, then bring the number back here.
Other calculators
Understand the inputs
Autonium publishes research, not recommendations. Scores, factors and written reads describe historical and current data and are not buy or sell advice. Not financial advice. Market data is refreshed on a schedule and may lag. See our methodology and disclosures.