Compound Interest Calculator
See how starting balance, rate, time, and contributions grow with compounding.
Future value
$144,573
Interest earned
$86,573
On $58,000 contributed
- Starting amount
- $10,000
- Total contributions
- $58,000
- Interest / growth earned
- $86,573
- Projected balance
- $144,573
How compounding works here
Monthly contributions are treated as ordinary annuity (end of period). The effective growth compounds on both the initial principal and each contribution after it is made. Time and rate dominate; small increases in either produce outsized differences over decades.