Compounding calculator
Growth of a balance at a fixed % per period, with optional regular deposits.
Final balance
$14,257.61
Total gain
$4,257.61
| Period | Start | Gain | End |
|---|---|---|---|
| 1 | $10,000 | $300 | $10,300 |
| 2 | $10,300 | $309 | $10,609 |
| 3 | $10,609 | $318.27 | $10,927.27 |
| 4 | $10,927.27 | $327.82 | $11,255.09 |
| 5 | $11,255.09 | $337.65 | $11,592.74 |
| 6 | $11,592.74 | $347.78 | $11,940.52 |
| 7 | $11,940.52 | $358.22 | $12,298.74 |
| 8 | $12,298.74 | $368.96 | $12,667.7 |
| 9 | $12,667.7 | $380.03 | $13,047.73 |
| 10 | $13,047.73 | $391.43 | $13,439.16 |
| 11 | $13,439.16 | $403.17 | $13,842.34 |
| 12 | $13,842.34 | $415.27 | $14,257.61 |
How it's calculated
Each period, the balance grows by the period percentage and then the optional deposit is added. The final balance is the result after the last period. Total gain is the final balance minus what you started with and everything you deposited along the way.
Everything runs in your browser — nothing is sent anywhere. Results are estimates; your broker's contract specification is the final word.
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