Compounding calculator for traders

See how a balance grows when each period’s return is reinvested, with optional deposits and a period-by-period table.

Starting balance

Return per period (%)

Number of periods

Deposit per period (optional)

Final balance: 16,084.37
Total gain: 6,084.37
Total deposited: 10,000

Period	Balance
1	10,200
2	10,404
3	10,612.08
4	10,824.32
5	11,040.81
6	11,261.62
7	11,486.86
8	11,716.59
9	11,950.93
10	12,189.94
11	12,433.74
12	12,682.42
13	12,936.07
14	13,194.79
15	13,458.68
16	13,727.86
17	14,002.41
18	14,282.46
19	14,568.11
20	14,859.47
21	15,156.66
22	15,459.8
23	15,768.99
24	16,084.37

Results are estimates. Brokers and prop firms calculate prices and limits in their own way — check their rules.

How it works

Each period the balance grows by the return and then the deposit is added: B(k) = B(k−1) × (1 + r) + D. Example: 10,000 at 2% a month for 24 months grows to 10,000 × 1.02²⁴ ≈ 16,084 without deposits.

Keep it realistic

The result is arithmetic, not a forecast: trading returns change from month to month and can be negative. A losing month shrinks the base for every month that follows.

Updated October 7, 2026